The background
is an Argo display of QRSS reception on 80m.Notes and Links below to guide you to find information on all aspects of the Softrock SDR and the Si570.
http://groups.yahoo.com/group/softrock40/ This is where it starts, join this group, look through the Files section and pictures, a specific subject may be found by searching the messages. The information is all there but difficult to find.
Yahoo (and other) groups. These can be amazing! People from all round the world share their particular expertise. Tom has distributed several? thousand Si570s to members of the group who would not have even heard of it. (Tony now supplies the Si570 with his kits.) In the unlikely event of you never having joined such a group, don't be afraid. Nothing is required of you, just join and read what information others have provided.
Last opened for editing 04 March 2010 Probably only slight change. I try to remember to put these in italic. Please take these notes and links as a guide, advances are being made continuously, some things I just don't understand!
CONTENTS OF THIS PAGE Click on link
1 The Si570
2 Getting and Making Softrocks
3 Building a Softrock. Or look at http://www.wb5rvz.com/sdr/
4 For Information Surrounding the Softrock VHF converter, MOBO, PAs,
Panadapter for use with conventional rigs etc.
5 Soundcards Setting up, USB, problems.
6
PIC/PICAXE control of the Si570, Tony's first method. switched control
without a computer. Reprogramming the PIC (and PICAXE)
7 Parallel Port Control of the SI570.
8 USB Control of the SI570 Information, driver installation. BPF
control.
9 Serial (COM) Control of the Si570.
10 Some Stand-alone Controller Kits Control the Si570 independently. Links
to other SDR kits.
11 Some SDR Software
12 Modes not yet Supported by these SDR Programs.
13 Audio Files to Test
Software Without a SDR
1 The Si570, Getting One.
The Si570 has a startup frequency specified at the time of ordering. This is not a real VFO but fast changes can be made via its I2C pins that will satisfy most users. "With the help from a microcontroller, the si570 can be re-tuned within about 100µs as long the frequency change is within 3500ppm. This makes it possible to increase the frequency in steps with a fast rate. For steps larger than 3500ppm, the si570 can be re-tuned within about 10ms. 73 Guido PE1NNZ" Much of the control software uses smooth tuning in a limited frequency range but large changes inevitably produce substantial clicks. There are details of control using a printer port (LPT), Serial (COM) port, USB, PIC, PICAXE, two stand-alone controllers . (Sections 6-9 on this page) Other methods are being developed.
The use of the Si570 was proposed as a way of giving the Softrock SDR more frequency agility. The frequency is specified from 10MHz to 215MHz, (160MHz CMOS) some are specified to beyond 1GHz. They actually all start at 3.5MHz, but this is not specified. Read the information at www.silabs.com/ enter Si570 in the search box. The Si570 is not marketed as a radio device although it's signal purity seems good enough to satisfy many. It certainly is better than many DDS sources! It is reasonably stable and can be set very precisely. The Softrock local oscillator is four times the receive frequency so the SI570 does allow fairly low frequency reception. Of course, it can be divided further.
http://www.softrockradio.org/ Enquire to Tom km5h @ yahoo . com . Or try SiLabs for two samples, but be sure of the specifications you require. The default settings are adequate but can give problems with some of the older control methods. Do not use Google/Yahoo mail, use your home ISP. Two types are relevant to the Softrock. Many favour the slightly cheaper CMOS. The LVDS is specified higher stability and goes higher in frequency. (Far higher than required for Softrock but the latest "C grade" LVDS are limited, do not work above about 280MHz. Many of the earlier LVDS "C grade" worked much higher, but probably not within the specifications for the "A or B grades".) At the moment Tony caters for both in his kits but you must now ask him to supply the FIN2001 LVDS receiver with the kit if you intend to fit a LVDS Si570. Tony supplies a CMOS Si570 with his kits, often there is a delay, SiLabs are slow to deliver "small" quantities! Also http://www.sdr-kits.net/USB/USB_Description.html Sells them in the UK including the 810MHz Si570 BBB000141DG LVDS.
This page contains test results of the Si570, showing low phase noise. http://www.cliftonlaboratories.com/si570_kit_from_k5bcq.htm Message regarding spurious outputs from the Si570. http://groups.yahoo.com/group/softrock40/message/23882 Apart from harmonics (the output is square wave) spurii are low, LVDS is best. Temperature Stability. At 5MHz (divided frequency) the frequency has varied 3Hz over a week when the room has varied 5 degrees Centigrade. I have mounted one on a Khune crystal heater and observed a movement of around 1Hz under similar conditions. The Khune heater holds a temperature of 40 Centigrade so would not work well in the tropics.
2 Getting and Making Softrocks
Kits are now obtained from http://www.kb9yig.com/
You may only order what is in stock so need to keep an eye on the site until what you want is available. Also watch the Softrock
Yahoo group, Tony will probably announce when kits appear.
Demand is high!!! Many additions sell out in hours!!!
http://www.wb5rvz.com/sdr/
At the moment the best pages for Softrock beginners. A description of most
recent models "Heathkit" type building instructions. Some
fault-finding. It does not cover everything yet,
but most current things. A request on the Yahoo group will get a reply from
Tony.
http://www.softrockradio.org/ is
an attempt to sort out the basic information about the Softrock project. A
member is arranging group buys of the Si570 device for other members of this group.
Like all web pages it may not be completely up to date. Tony, KB9YIG,
the kit producer, regularly posts the information on the Softrock list. Tony
is supplying the CMOS Si570 with his kits, if required.
http://groups.yahoo.com/group/softrock40/
You may only need to look back a few days, a request on the list usually gets a reply from him.
Beginners, this is all you need! The Yahoo group is full of related
discussion, but a kit from Tony is all that is needed. (Plus a computer with
a stereo soundcard.)
Computer operating system:- For most Windows is really the only choice although there are ways of using Linux and Mac. I would recommend a computer with XP. Vista and Windows 7 may be used but could give problems you'd rather be without. A lot of free radio software will not have been updated and unsigned drivers can be difficult. Unsigned drivers in Win 7 64 bit etc. http://groups.yahoo.com/group/softrock40/message/38684
http://www.wb5rvz.com/sdr/ The experienced constructor just needs Tony's instructions. This site brings it all together. Robby's page on surface mount components http://www.wb5rvz.com/sdr/common/Common_Component_Mounting.htm Soldering, I just use fine solder and a fine tip iron. An eyeglass helps to check for solder bridges. Desoldering braid will remove excess. People develop their own techniques. A few links http://wb5rvz.com/sdr/RXTX_V6_3/index.htm Look near the bottom. The Youtube video is rather slick but shows how simple it can be. Two more links http://www.sparkfun.com/commerce/tutorials.php http://www.solder.net/technical/tips.asp My soldering technique http://groups.yahoo.com/group/softrock40/message/41109 I do not think you will need this!..Si570 removal http://groups.yahoo.com/group/softrock40/message/29377
Don't be put off! I have built 7 Softrocks and never used a dual channel oscilloscope or audio signal generator. (For the 8th one a dual channel scope did help, but that was actually a soundcard problem!) An RF signal generator may help but a transceiver running low power into a dummy load can be substituted (no direct connection!) A receiver can be used as a frequency counter, tune to zero beat (as best you can) on SSB to give a rough idea. As an example a short antenna wire placed close to a Softrock will detect the divided centre frequency.
There are various attempts to facilitate fault finding, but a post to the group usually gets a reply, even though the question has been asked many times before! One thing that is sometimes not expected is a "spike" in the centre of the SDR program's waterfall. This is normally obvious unless a very good soundcard is used. What should not be normal is a "mound" each side of this spike. The Softrock is very sensitive to ground loops and should be connected to the computer ground by just one link. Experiment, anything else that is connected to the Softrock may also ground to the computer in a way that is not obvious. For example a PSU may be grounded, in that case try just connecting the positive to the Softrock. An isolated PSU would be best. I usually find that the audio cable ground is the best, anything else connecting the Softrock to the computer has it's ground connection broken. It is best to get this right before putting the board in a case, when you do insulate any sockets put on a metal box so a ground loop is not introduced. Try to avoid making and breaking connections when power is applied. Some have got round the ground loop problem by using transformer coupling but that may cause problems and they need to be chosen with care. A thorough examination here http://www.cliftonlaboratories.com/softrock_lite_6_2.htm
http://golddredgervideo.com/wb5rvz/RXTX_V6_3/image_rejection_hints.htm Robby has now started some pages about setting up. The image is an equal distance on the opposite side of centre to the wanted frequency. Rocky, and some other software self-adjusts on receive but all need setting up manually for transmitting. Rocky is good software to start with, Tools - RX I/Q Balance and you can quickly see if image rejection is being achieved. Unfortunately this does not always easily work with Vista/W7.
4 For information surrounding the Softrock
http://groups.yahoo.com/group/softrock40/files
Here are all the schematics and basic building instructions. Tony, KB9YIG has sections for each version. Some will be obsolete as is the picture at the head of the Yahoo Group! Much
information is hidden in this file section but recently an index has been added
to make it easier to find.
Robby has most of the information here. http://www.wb5rvz.com/sdr/ the first page of many!
The Yahoo search has not been too good recently, use the Google search on
Robby's page http://www.wb5rvz.com/sdr/
Google search Robby's site and the Yahoo group.
The replacement for the popular beginners Softrock 6.2 Lite
the Softrock Lite II. http://groups.yahoo.com/group/softrock40/files/%27A1%20SoftRock%20Lite%20II%20docs/
This is ideal for beginners. Find out if you can do it for $15 post paid from
Tony.
Below in this section 4:- Some random links and remarks about Softrocks. Much of it will be found at the two links above but a quick look below may give some idea of the add-ons, information and modifications available. Including the MOBO Add-on
V9 Lite+USB Xtall v9.0 http://groups.yahoo.com/group/softrock40/files/%27A1%20Lite%2BUSB%20Xtall%20v9.0%20docs/ All HF receive, Si570 and USB control on one board.
From: "Tony Parks" kb9yig gmail com BPF on earlier Softrocks
The sockets on both the 8.3 and the 6.3 boards were set up to be aligned with a 9 pin header, with the antenna IN on the right (2 pin) jack and the RF OUT on the left-hand (3 pin) jack.
The HF-BPF board connects via the 9 pin P100, with pins 1 and 2 (on the right) handling the ANT IN and pins 7, 8, and 9 (on the left) handling the RF OUT.
You just need to be careful aligning the HF-BPF board and orienting it such that, when superimposed upon the RX board, the
silk screens of both boards are both right-side up.
Switched BPFs Using the USB AVR chip. See Section 8 Switched BPFs. Tests on the v9.0:- HF BPF Testing Rev 1.pdf at http://groups.yahoo.com/group/softrock40/files/KF4BQ/
Note about BPF inductor values. http://groups.yahoo.com/group/softrock40/message/30107 HF BPF Testing Rev 1.pdf at http://groups.yahoo.com/group/softrock40/files/KF4BQ/ AND http://golddredgervideo.com/wb5rvz/hf_bpf/images/design_plots.pdf Unless you are a perfectionist just wind them to Tony's figures. They are wide enough for a turn or two difference on the larger ones to make no noticeable change in performance. Note:- unless the inductance is tested at the operating frequency measurements MAY not be accurate, effective inductance can vary with frequency.
Also LF and VHF converters! Tony did try a LF
adaptor using dividers and the on-board Si570.This may be more frequency stable
than:- [ A
circuit for Jan's converter, (no Softrock kit.) Yahoo group
membership required. Converts LF to 24-26MHz.] A useful post about using the Softrock at LF, you need to join the group.
http://groups.yahoo.com/group/SpectrumLab/message/1505
My experiments with LF seem to show that more than one LPF will be required for frequencies below 1.5MHz, I think the straight Si570 division method suffers from
"Subharmonic" mixing. On LF a divided frequency of , say, 400KHz would produce
"Subharmonic" reception at 1200KHz.My checks with the conversion method showed problems with the crystal mixing with the Si570 frequency, it seems the product then gets tripled and mixes with strong higher frequency
signals. This is with my converter, maybe Jan's does not suffer this way.
VHF converter Tony now supplies a converter that will cover 6, 4, or 2 metres. This uses the direct output from the Si570 to the converter and the divided output to receive the converted frequency, no separate conversion oscillator!
Robby's comprehensive pages http://www.wb5rvz.com/sdr/sr_6m_2m_converter/index.htm
G8VOI:- All of the following assumes you are using Fred PE0FKO's v15.10
firmware, or later. The one essential piece of information you need to use either the 6m or 2m converter with the v9.0 RX is the firmware LO multiplication factor:
50MHz converter = 4/3 entered as 1.333333333
144MHz converter = 4/5 entered as 0.8
4
To set up the firmware use Fred's stand-alone configuration tool for the USB controller.
http://home.ict.nl/~fredkrom/pe0fko/CFGSR/ ,
now no need to use Winrad and Fred PE0FKO's supporting dll file.
You need to select the 'LO' tab, and enter the multiplication factor in the 'LO Total' 'Multiply' box at the top of the page.
http://home.ict.nl/~fredkrom/pe0fko/g8voi/ For Bob, G8VOI's, documentation:- Version 9.0 VHF converters and firmware set-up.
Use the Softrock on 6 metres, without the converter. This is for experimenters but Tony is offering the BPF components. Look at this thread. http://groups.yahoo.com/group/softrock40/message/27700 This technique has also has been tried on 4 metres. A good explanation of "subharmonic mixing" that is used with this method . http://groups.yahoo.com/group/softrock40/message/29210
Lite+USB Xtall v8.4 no longer available. http://groups.yahoo.com/group/softrock40/files/%27A3%20Lite%2BUSB%20Xtall%20v8.4/ RX only, all band options 160m to 6m. Switched BPF option. There is confusion, at the moment only "unofficial" modifications make this automatic.
Version8.3 Lite RX only with Si570 no longer produced.
RX/TX v6.3 Si570 all band options http://groups.yahoo.com/group/softrock40/files/%27A2%20Lite%2BXtall%20v8.3/ Softrock 6.3 output stage:- The overall finding so far has been that the amplifier is not linear at power levels over 1/2 to 3/4 watt or so. 1 watt level is fully saturated output (cannot be operated on ssb). only good for CW..
Xtall Daughter Board, not available now, adds the Si570 to older Softrocks http://groups.yahoo.com/group/softrock40/files/%27A1%20XTALL%20daughter%20board/ Will enable the Si570 frequency to be switched without a computer. Different versions of the PIC program give 16 and 40 frequencies. Can be used for other applications. Tony's USB board will work with this.
Cecil has a collection of manuals here. Some older ones that may not appear in the group files. http://www.qrpradio.org/pub/softrocks/manuals/
USB interface controls Si570 on older switch-tuned Softrocks. Adds CW paddle/PTT for Rocky. http://groups.yahoo.com/group/softrock40/files/%27A1%20USB%20I2C%20Interface%20board/ NOTE this is essentially the same unit as http://www.sdr-kits.net/USB/USB_Description.html This page contains ALL the links and information required but you do have too look hard! February 2010 note compatibility issues, see section 8.
Serial interface for Rocky. Mini "Break Out Box" for M-Audio Delta 44 soundcard, see "Soundcards" below.
Message from Jan, G0BBL:- Using the LVDS Si570 with older Softrocks. As the question whether Si570 LVDS will drive Tony's Softrock RXTX and Softrock Lite PCB's comes up time and time again, I have written a brief paper on this subject. www.sdr-kits.net/hiddentest/index_files/LVDS%20interfacing.pdf My recommendation is to use Si570 CMOS to drive legacy Softrock boards. The difference in performance between CMOS and LVDS is very small but CMOS makes interfacing easier.
It is possible to use the Softrock as the basis for a stand-alone direct conversion receiver.
http://groups.yahoo.com/group/softrock40/message/27659
It is probably better to use an established phase-shift design, but if you have a spare Softrock and wish to experiment...
A number of group members are using various independently developed interfaces and software. This appears on the Yahoo postings, I include some references but it is difficult to keep track of them all. A search of messages may help when you see a topic. http://groups.yahoo.com/group/softrock40/messages Unless you wish to experiment it is probably best to wait to see if Tony incorporates any of these in his designs................. ......... http://groups.yahoo.com/group/softrock40/message/29862 Starts a thread about ic2USB with 9V1AL board Subject: [softrock40] 9V1AL kits and PCB's, ordering The price of kit is $30 stateside (and $32 DX) The price of pcb is $12 Total price of parts+pcb = $42 However, you payment will be to two different PayPal accounts: $32 for parts to pay to: <mailto:artsplace1@gmail.com>artsplace1@gmail.com (artsplace1 att gmail dott comm) and $12 for pcb to pay to: <mailto:lee188@singnet.com.sg>lee188@singnet.com.sg (lee188 att singnet dott comm) The kit (parts + pcb) will be shipped to you in one package from me, Alex is having his boards shipped directly from the PCB supply house to me, so I will distribute all of them. I hope this clears things up. If you need other info, email me direct at ky1k att verizon dott nett. Regards, Art ...
The Softrock 6.3 can be turned into an all band transceiver using the 9V1AL Motherboard "MOBO", see the files section of the Softrock40 group. The current version of the 9V1AL Motherboard is a plug in replacement for the Softrock 6.3 PA module, providing 1W output on all bands, but you also require an additional switchable Low Pass filter bank for transmit, this is not provided on the 9V1AL Motherboard v.3.6. However, an updated version of the MB is in the brewing, including switchable LPFs. For info on the Mobo add-on, or is the Softrock an add-on to the Mobo? December 2009 http://groups.yahoo.com/group/softrock40/message/39024 . One potential way of implementing an all band SR 6.3, 20W out on all bands, can be seen here: http://sites.google.com/site/lofturj Hope this gives you some ideas, 73 de Loftur, currently HB9/TF3LJ :) :) Jan 2010 You can join this Google group and you will find all information: http://groups.google.com/group/MOBOKITS Basically it will make your RXTX to an all band trx + other functions.
Robby's MOBO Description and Build Pages http://www.wb5rvz.com/sdr/mobo43/
4
Lots of discussion
about PAs for use with Softrocks .. ...Some amplifier suggestions if you are not a true
QRPer....
My experience with IRF510s is not a good one, they never managed to behave properly above 14MHz. And their IMD performance is not good since they are not RF devices.
Here are some links for QRP PAs with RD15HVF01 and RD16HHF1
1.-> http://www.kolumbus.fi/juha.niinikoski/10WLinear/10WLinear.htm
2.-> http://www.box73.de/catalog/pdf/PLB-15.pdf
3.-> http://myweb.tiscali.co.uk/radiokits/radio-related/20W_PA/
4.-> http://qrpproject.de/UK/QRPPA2008UK.html
<-my favorite !!
Numbers 1. and 3. are homebrew designs whereas 2. and 4. are offered as kits. My
preferred one though is the fourth which is permanently now in the same box as my softrock and the one you hear when we have qso's on 10m 73, Christos SV1EIA
4
www.lz1aq.signacor.com
"Integrating Software Defined Radio (SDR) and a Standard Transceiver" Shows switching and CAT control of an Icom from Winrad to synchronise it's frequency with a Softrock
4
A device some may find useful.....The Griffin PowerMate is a USB
controller (human interface they call
it) which consists of a rotary encoder (knob), with an integrated push switch when you push down on the knob. This gives six possible controls:
Rotate clockwise, rotate anti-clockwise, push down and rotate either way, or a short or long push on the switch.
The software provided with the controller allows the user to assign functions like key presses, mouse clicks, scrolling etc to each of the
available operations. These are configured to the particular program being run at the time. I use the rotate functions to emulate the mouse
scroll wheel as a means of tuning when running the various SDR programs including PSDR, Rocky and
Winrad, likewise when running
PowerSDR and Rocky, I have allocated the push / rotate to step up or down the frequency tuning step size.
I do not believe any of the available SDR programs actually include support for the
PowerMate, its up to the user to decide what functions
they want. The Flex Radio website does include a document recommending a setup for the PowerMate to be used with the SDR1000.
A simple Google search should give you more information. I purchased mine off eBay from a company in the States, half the price
of those here in the UK. So, just to be clear, it does not provide any additions functions to
the existing SDR software, just a different method of providing an interface for the human operator, i.e a conventional tuning knob
rather than using up / down keys or a mouse scroll wheel. Regards, Bob G8VOI
[I looked recently and did not find such a price differential - falling pound!]
Information in GERMAN language http://dj9cs.raisdorf.org/
......................................................................................................................
4
Softrock performance. (My opinion) Some make remarkable claims.
Considering its simplicity I think it works very well. It produces SSB audio
that is better than much middle-range equipment. The audio filtering is DSP and
obviously potentially as good as anything else. However, I suspect in its simple
form it will fail when tested to the ultimate. In particular I feel that
spurious receiver responses and transmitter emissions are likely to be an issue.
Sensitivity I have a fairly quiet location (fingers crossed!) I am interested in the
lower frequencies and find the 8.3 to be about good enough, but have upgraded my earlier Softrock 6.2s to use the same
Op Amp as the 8.3. With a really good soundcard I am told it works well on 10
metres but with poor or mid-range cards the ultimate sensitivity may be down. I
have made a rough check on 10 metres, with a Delta 44 I seem to get 2db better
s/n with a low-gain preamp. If
you want the ultimate in sensitivity (disregarding other factors) a preamp MAY
be needed. I have used http://www.qrp.pops.net/preamp.asp
3rd one down, a Norton. I still this use to distribute an antenna signal to
several Softrocks and other receivers. As I find a local VHF station causes a certain amount of noise on some
frequencies I put a LPF in front. The preamp makes up for losses in the splitters
that follow. (eg at http://www.cliftonlaboratories.com/6_db_hybrid_combiner.htm
and at http://www.cliftonlaboratories.com/softrock_lite_6_2.htm
are tests on a Softrock 6.2).
USE WITH COMMERCIAL EQUIPMENT As an IF "Panadapter" Many are using the Softrock as a panoramic adaptor in a receiver or transceiver. There is information in the Files section http://groups.yahoo.com/group/softrock40/files/ , or search the messages using the rig's name as a keyword. This is strictly "do it yourself" but Tony does provide Softrock Lite kits suited for various IF frequencies.. http://groups.yahoo.com/group/softrock40/message/31103 just one message about the Softrock as an IF. http://www.cliftonlaboratories.com/ A site full of information, some related to Softrocks including some IF applications. http://groups.yahoo.com/group/softrock40/message/22084 8.817MHz IF
...................................................................................................................................................
5 Soundcards
Try what you have! Many do not see the need for an
expensive, specialised card. Note some cards need a "Sample delay" in
the SDR software in order to achieve image rejection.
The Softrock SDR requires a stereo input. Mic inputs are usually mono, older laptops may only have mono inputs.
Most cards will work, many are satisfied with what they have. Better cards may have a lower noise and wider dynamic range, lower level of spurii and show a much smaller "spike" at the centre of an SDR display. Ordinary cards sample at 48KHz, giving +/- 24KHz each side of the centre frequency of an SDR. For a wide panoramic view cards that sample at 96 or 192KHz are available. Many threads have discussed this,
eg.
http://groups.yahoo.com/group/softrock40/message/27500
If you are not too familiar with Windows sound settings be prepared for problems! Most do not have trouble but some systems can be very frustrating. Signals heard but do not tune:- How to check and avoid an unwanted bypass between the soundcard's Line-In and Line-Out http://freenet-homepage.de/dl4yhf/speclab/startins.htm#unwanted_audio_bypass Input to output feedback on Audigy 2 http://freenet-homepage.de/dl4yhf/speclab/startins.htm#audigy_2 "Be sure to check for updated drivers for any of your sound interface devices if you are having trouble with them. The new drivers might just solve the problem."
Some remarks about setting up Audigy cards http://groups.yahoo.com/group/softrock40/message/4359
Using the Creative SB 24 PCI, this also applies to some other Creative cards. The USB version is used by some, it works reasonably at 48KHz, but may not at 96KHz.
Many use the mid-price M-Audio Delta 44, It is effectively two cards in one, four inputs, four outputs that can be used as two stereo
pairs. It has low noise, 24 bit 96KHZ. Tony
sells a cheap kit to replace the large "Breakout Box" It is much
smaller, has 1/8 inch stereo jacks and RF filtering. Delta
44 settings for the earlier drivers, Drivers obtainable on the M-Audio site
and preferred by most are Delta DM5.10.00.5052v3.exe for XP etc, but the latest
one will be needed for Vista.. I have found that using the "Monitor/Mixer
introduces 90° phase shift in one of the 1/2 outputs making it unsuitable for
SDR TX. Always use the "Patchbay/Router" set to "Wav Out" on
1/2.
Using the M-Audio Delta 1010LT sound cards for Softrocks. This has the equivalent of 4 stereo inputs. This post
also gives details of phased antenna system used with Linux. http://groups.yahoo.com/group/softrock40/message/33683 M-Audio FAQ Knowledge Base
http://www.m-audio.com/index.php?do=support&tab=faqs It seems later software is giving problems "Drivers v. 5.10.00.5057 work for me. All subsequent versions failed to install or work with Rocky 3.6 at 96000 Hz sampling rate in my case. Crispino i5xww" Others seem to say the same.
For some information on better cards:- Mike Collins KF4BQ:- The EMU0202 has average performance for I/Q processing. The RX noise
floor is much higher at some frequencies. I put some test results in the files section a while back under my call if interested: Files >
KF4BQ. I don't use my EMU0202 that often. The Edirol FA66 is a bit better but more expensive. My best audio system is the EMU1212M, but it is a
internal PCI card
KG4LCF:- USB, Firewire and PCI cards are discussed. http://www.telepostinc.com/
use the LP-Pan link. Scroll down the page to the link for "Sound Card Info." You'll find info on performance of soundcards Larry recommends for use in the real world of
SDR.
While most 48KHz sample rate soundcards will work with Softrocks (+/-24KHz) some 96KHz cards do not actually give a
panoramic display of +/-48KHz, the audio is sometimes cut off at 24KHz. For a 192KHz sampling the choice is limited. Some are EXTREMELY expensive! See
http://groups.yahoo.com/group/softrock40/message/37952
and the associated thread, this started with external cards but expanded to internal ones...
Note:- Most just use normal 48KHz cards and see no need for a higher
sample rate.
http://ewjt.com/kd5tfd/sdr1k-notebook/sr40/sr6-production/index.html Some examples of Power SDR with a good soundcard. There may be a large spike in the centre when using a card of lower quality. This should be just a spike, a "mound" around this spike could be the effects of a ground loop. At the bottom are some nice oscilloscope pictures, I suspect a very nice oscilloscope was used! This is a v6 Softrock, but they are all basically the same.
6 PIC/PICAXE control of the Si570, Tony's first method. (2008?) switched control without a computer. Reprogramming the PIC (and PICAXE)
Tom KM5H has developed PICAXE and PIC programs to control the Si570. http://groups.yahoo.com/group/softrock40/files/XTALL%20Software/
Also info on editing the hex file. The most used one has 16 frequencies, there
is one that has 40, v2.5, with a slightly different way of selection. These have
a self-adjust feature that corrects the settings for individual Si570s. This
will probably only work for Si570s with the specification that he supplies.
(56.32MHz startup.)
My message 20798, 21048 Read this edited version. gives my experiences regarding programming the PIC and
editing the hex.
Winpic800 http://www.winpic800.com/index.php?lang=en
Winpic800 is a program for using a PIC programmer to write your personalised frequencies
into a PIC. THIS IS EASY! Note this program started up in the
Catalan? language. Click on "Idioma" and your language may
be selected, this makes it a little easier!
Calculating the Registers for your personalised PIC. Dick, K9IVB's Excel program http://groups.yahoo.com/group/softrock40/files/K9IVB-Si570/ Xtall-Calc2-VBA.xls will output Tom's v2.4p hex file that will self adjust the PIC to your Si570 giving centre frequencies well within 100Hz of nominal. Most will be much closer. It outputs three hex files but the v2.4p seems to me to be the best. There is now Xtall-v25-Calc.xls This will produce a 40 frequency v2.5 hex file. The Excel programs all require the Analysis tool pack Add-In. Normally the add-ins must be first installed and then activated on the Tools drop down menu - if the box does not have a checkmark the add-in is not working. If you really want to produce your own figures but do not have Excel there is a calculator in the SiLabs Evaluation Software https://www.silabs.com/Pages/default.aspx Enter Si570 in "Keyword Search", the data and software will be listed. When installed some of it will not work because you need the Evaluation Board BUT the calculator software will. Other Excel calculators can be found here http://groups.yahoo.com/group/softrock40/files/KM5H/ Open Office will open the Excel files but would not run Dick's latest. But they do show how the data is arranged if you want to manually edit using Winpic800. The Si570 can be set very precisely but this requires manual editing of the hex file, not difficult, see links above. I have crudely hacked Dick's Excel files to produce a v2.4.hex and v2.5.hex that do not self-adjust. These output settings very close to the required frequencies when the exact values for a particular Si570 are entered. (These seem to work but have not been approved by Dick)
http://hammap.smallcpu.org/softrock/ Detailing the hex file modification procedure. This uses Winpic, Winpic800 makes editing the data very much easier for the two finger typist, with less chance of a mistake, see above, but is slightly different.
In message 23234 Tony is offering to supply a personal PIC burnt with a hex
file you supply. >I am willing to provide custom PIC devices in filling kit orders for
the XTALL v1.1 kit, the Lite+Xtall v8.3 kit or the RXTX+Xtall v6.3 kit. I would ask that a request for a custom PIC be
e-mailed to me
with an attached HEX file and a note to help me link the custom PIC request to a specific order.
If you do not have Excel just list your 16 required frequencies and it would only take someone a few minutes to produce and send you a customised version of Tom's 2.4p.hex file. (Or the 40 frequency v2.5) I could do this. I can also program a PIC so if anyone wants this done let me know so we may arrange something. Any frequency for the Softrock may be calculated, not only amateur bands. Alan G4ZFQ That's me! Email address on image at bottom of page.
7 PARALLEL PORT CONTROL of the SI570.
PE1NNZ has a parallel port control method. http://groups.yahoo.com/group/softrock40/files/Si570/LPT1/ this is used several ways, incorporated in SDR programs. WB8LGA uses this in a stand-alone computer program.. http://groups.yahoo.com/group/softrock40/files/WB8LGA/ (DDS Si570.zip) sets the Si570 from 3.5MHz to 440MHz. Also see SV1EIA's version of Power SDR, below.
8 USB CONTROL of the SI570 (Used 2009 on) Current version, Fred PE0FKO's version of the USB controller see below.
November 2009
"Softrock RX V9:- You can download the USB driver from Fred PE0FKO's firmware page in the section 'Installing the PC driver software'
http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/
Once you have the USB driver installed and got the interface correctly recognised by the PC, the firmware default state is to support the v9.0 RX and switched BPF
filter module, so no changes are necessary.
If you need to make any changes or just want some more information about using the firmware, take a read of the 'Firmware Users Guide' and hopefully that should provide some guidance.
You can download the user guide from Fred PE0FKO's website: http://home.ict.nl/~fredkrom/pe0fko/g8voi/
One thing that has now changed and I am in the process of making an updated supplement for the user guide, instead of having to use Winrad to configure the firmware, there is now a new stand alone configuration program called 'CFGSR' which you can download from:
http://home.ict.nl/~fredkrom/pe0fko/CFGSR/
" G8VOI
RX/TX with USB AVR:- CFGSR, see above, is
required to configure the device to enable CW TX. ABPF is for RX only and must
be disabled.
Driver Installation go to http://www.wb5rvz.com/sdr/RX_V9_0/02_usb.htm
at the bottom it describes the basic driver installation. Get this
from http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/
Load drivers:-
Unpack the drivers into a folder on your computer. Insert USB plug and direct the "Wizard" to the SI570_firmware folder.
Then the drivers are installed. If you miss this and the
driver does not get installed go to "Device Manager", find the
"Unknown USB Device" and "Update the Driver", directing it
to the folder. Occasionally it may be necessary to find and delete the
drivers. In XP they are at C:\Windows\System32\libus0.sys and libus0.dll
http://groups.yahoo.com/group/softrock40/message/39423 Bob's explanation of the differences, and history, of the firmwares used in the ATTiny AVR. Comparisons with Fred's AVR supplied by Tony with the Softrock and the SDR Kit's AVR. Basically the advice is to use Fred's firmware for a Softrock. The ealry AVR supplied with the Softrock will work but is best replaced.
It is important to know the version of the firmware. If it is the new V15.10, or higher, that Tony now supplies, you need another file for the USB installation. You can find that file on the firmware page http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/ or direct http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/PE0FKO-USB-Driver.zip
Compatability with SDR KITS controller and early AVRs:- "First there was the DG8SAQ firmware V1.4 then the PE0FKO firmware V15.x upward compatible with V1.4 then came SDR-Kits firmware V2.x *not* upward compatible with V15.x. -- 73, Fred PE0FKO" So the later SDR kits controller may give problems when trying to use with some software. Jan. 2010.
Getting a new AVR http://www.dspradio.org/ATTINY85-20
maybe this will move to http://www.softrockradio.org/
sometime.
TESTING This message from Bob removes some confusion Re: V 9.0 Rx LO Stage (and all USB Softrocks) Test. http://groups.yahoo.com/group/softrock40/message/39233
Bob has all the information! http://home.ict.nl/~fredkrom/pe0fko/g8voi/
For Bob, G8VOI's, documentation:-
PE0FKO SoftRock AVR Firmware User Guide Issue .
Version 9.0 VHF converters and firmware set-up .
A Beginners Guide to Programming the Atmel ATtiny . Note Fred's
latest V12 onwards only fits on the ATTiny85 but you may find V11 will suit your
purpose.
If you do not want to reprogram older AVRs then Cecil will supply the
AVRs with the software installed, just make sure he knows what you want.
http://www.softrockradio.org/PRG-AVR1
March 26th v15.10
Dec. 2009 Fred's CFGSR is able to save your favourite start frequency. If you feed power from the Softrock 5V then USB does not need to be connected for the Si570 to be started at this frequency. When the USB is connected it works normally. I use this feature for my Softrock monitoring RXs, set to an exact frequency then save it.
Make sure that you have the 'ABPF' option selected in the firmware by using the set up screens in
Winrad or the new (Sept 09) configuration utility. In PSDR-IQ v1.12.20, under the 'General' set up 'USB' tab, make sure you have both 'USBtoI2C adapter' and
'HF bpf' boxes ticked and applied. I have had the program clear one of these very
occasionally for no obvious reason. It's worth updating your firmware up to the latest v15.10 as that will give you full bpf switching with Rocky v3.6 as well.
Do not fit the 'manual' bpf selection jumpers with the lead still connected to J3 otherwise you might risk damaging the AVR chip as you could be shorting the output pins to 0V if they were high to start
with. 73, Bob G8VOI
Switched BPFs Using the USB AVR chip.Note:- This is old info, the latest AVR is different. As always I recommend keeping with Tony's kit until you know what the alternatives are. "There seems to be a lot of confusion and spurious information being given out regarding the v9.0 receiver and auto band switching! Advice being given out on this, and other related groups could be making people buy additional hardware that is not required. It is NOT necessary to replace the original AVR (Early 2009) chip supplied with the v9.0 kit to have control of the band switching with the following: Winrad using Fred PE1FKO's dll file, this works fine WITHOUT needing to change the AVR chip. PowerSDR using the dll from: http://212.254.198.33/bpf_usb/ Both of the above work fine. The new AVR chip from SDR-kits and PE1NNZ dll works fine with PowerSDR, (and also happens to work with Winrad using Fred's dll to provide band switching, but not the fine tune function). Unfortunately I do not have the facilities to program a chip with Fred's new firmware http://home.ict.nl/~fredkrom/pe0fko/ExtIO_Si570/ to try that out to compare with the above. As far as I know there are no simple solutions for using Rocky or KGKSDR and the auto bpf. Please note, I am not saying one or the other available AVR chip solutions is better or worse, each appear to provide enhanced facilities over the original one. Bob G8VOI"
For the independent controller. At http://www.sdr-kits.net/USB/USB_Description.html
Look at the compatability note above. The later version may not work with SDR
programs. This kit (November 2009) now has the option of a LVDS Si570 going up to
915MHz. NOTE:- The early version is the same as Tony's USB controller. The drivers here are for early versions of Tony's USB AVR. Note:-
The drivers only work with the version of PSDR linked on that site. The
AVR is best replaced with the latest Softrock version and Fred's driver/dll.
This controller may be interfaced to a Softrock without an Si570. http://www.mydarc.de/dg8saq/SI570/index.shtml
Here you can download "SOFTWARE AND SCHEMATICS:" SI570_firmware.zip. Extract this to a convenient place. Click "Easy to use PC software" this gives you USB_Synth.zip. Extract the .exe. This enables one to set the frequency independent of an SDR program.
(This sets the Si570 to any frequency within its range, try outside their
specification, I have at least one of Tom's LVDSs that goes to 700MHz (or
higher?)
All this is in the PDF at
http://www.sdr-kits.net/USB/USB_Description.html
Click
"SDR-Synthesizer Kit Documentation (PDF File)"
about 3/4 way down the page, for "USB-Synthesizer Kit Instructions v10.PDF"
and "USB Synthesizer Kit Update 1" for USB Synthesizer Kit Update 1.PDF
For Tom, DG8SAQ's USB troubleshooting http://groups.yahoo.com/group/softrock40/files/DG8SAQ/AVR-SI570-Troubleshooting.pdf
this includes a link to M$ usbview www.mydarc.de/dg8saq/hidden/usbview.zip
Included in the software is a USB test program. It will read the Si570 so its frequency could be
set, then the registers read to be transferred to a PIC for specialist
use. TOM WARNS, "DO NOT USE ANY OTHER BUTTONS ON SI570_USB_Test UNLESS YOU EXACTLY KNOW WHAT YOU ARE DOING. YOU MIGHT CORRUPT THE AVR
EEPROM". See his PDF!
Si570 Type:- It is recommended to use the CMOS with this kit, but if you have the LVDS it may be used with Softrocks. Look at http://www.sdr-kits.net/hiddentest/index_files/LVDS%2020interfacing.pdf The LVDS has slightly higher specifications but the difference may not be noticed. The more adventurous could use a receiver like the FIN1002. This option is available in all of Tony's current kits containing the Si570.
8
Early 2009 Tony's add-on board to interface USB with the Si570 on his earlier kits. http://groups.yahoo.com/group/softrock40/message/24140 Construction and other information here:- http://www.wb5rvz.com/sdr/usb_i2c/index.htm This is likely to be the best way to control it, just plugging in where the PIC goes. As in many of these sort of additions the source is available for those who wish to develop further, or customise. NOW OT OF DATE! This board now comes with Fred's firmware AVR, not the SDR Kits version, see top of this section. This board did use the controller from SDR Kits so the DG8SAQ software above also worked with it. NOTE Tony's way of connection on the Softrock v8.4 INTEGRATED USB CONTROL:- "The electrical connections to the PC from the v8.4 board involve only the soundcard line-in cable and the two data lines in the USB port connection. This results in only a single ground connection between the v8.4 board and the PC, the ground in the line-in cable. With only a single ground connection to the PC the center frequency noise is very low, however, the USB control of the Si570 seems to be good."
Since then problems have been noted, Jan 2010 hopefully all is cured, I keep this here just in case it helps someone! I rectified a lack of control by connecting a 100nF between the two grounds, Tony has used some filtering in the v9.0 Lite. TONY IS REPLACING THE ZENER DIODES IN THIS UNIT, THEY SEEM RESPONSIBLE FOR INTERMITTENT OPERATION. See http://groups.yahoo.com/group/softrock40/message/26904 A further problem may be the result of the SCL I2C line not being pulled high. Many find powering the Softrock BEFORE inserting the USB solves this. Two solutions to this, pull the SCL line to the USB 5V rail with a 47K. Just this line needs pulling high. Or revised software for the ATTiny at http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/ Cecil can supply a chip with this new software, ask him:- http://www.softrockradio.org/catalog/32/microcontrollers
Early 2009 NOW OUT OF DATE! Now Tony's Softrock v8.4 and later come with integrated USB control. This is the same unit, all the information required for the Softrock is on this site http://www.sdr-kits.net/USB/USB_Description.html Look carefully, everything is there! This also applies to the add-on XTALL USB board for early Softrocks. June 2009 Tony is now supplying Softrocks with Fred, PE0FKO's USB AVR firmware, see top of this section. Note this needs Fred's driver.
8
Middle 2009, some notes about the USB AVR.
Fred PE0FKO's version of the USB controller ATTiny 45 Look at PE0FKO's web page. He really has the ATTiny USB AVR per forming well! http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/ Smooth tuning and automatic BPF switching, Si570 calibration. This is supplied by Tony in current USB Softrocks.
Here is Fred's latest development, a stand-alone configuration tool for the USB controller.
http://home.ict.nl/~fredkrom/pe0fko/CFGSR/
Now no need to run Winrad. All information on this page.
"I created a new version V15.10 of my firmware for the USB AVR
Si570 controller, and put it on my web page
http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/
This version will support the LO frequency change by a offset and multiply
(fixed point) numbers. This feature can be used by front end mixers with a fixed
frequency, all kind of sub-sampling or other fraction multiply like the SoftRock
VHF converter is using. The next version WinRad ExtIO_Si570.dll V0.8 will
support the configuration of the offset and multiply factor in the
firmware. For using the CW inputs, disable the ABPF option in the
firmware! The 'smooth tune', 'automatic band pass filter selection', 'one site
calibration' and 'LO calculation' are included in the ATtiny45 (4K flash rom)
with the normal 'set freq by value & si570 register' calls. (No separate set
freq command and application change necessary)" People not capable to program the AVR chip, can order a ATtiny45
or 85 programmed chip by Cecil, K5NWA
http://www.softrockradio.org/PRG-AVR1.
Use CFGSR to setup the AVR, it will save the Si570
calibration setting so will not need calibrating with any other software. You
can also set BPF start and stop frequencies for each band.
REPROGRAMMING See http://home.ict.nl/~fredkrom/pe0fko/g8voi_guide/
for Bob's definitive guide. For the record the first thread
started here:- http://groups.yahoo.com/group/softrock40/message/31029
shows one programmer to reprogram it. My version:- http://g4zfqradio.googlepages.com/avrhvprogrammer
. The software is Windows command line, I used W98, To get it to work on
XP or Vista you need to find giveIO.sys on the web (eg http://www.cs.ucr.edu/~eblock/pages/pictools/giveio.html
but in my case LOADDRV.exe did not work, I got an error message, "invalid
service name", I just put giveIO.sys into the same folder as avrpp.exe and
avrpp worked properly.
http://sourceforge.net/project/showfiles.php?group_id=46487&package_id=77441&release_id=150767
This is a self extracting exe file that puts the individual files in a folder.
It still needs installing. ) Here is just one link that shows
how to make a command window easier to use. http://www.petri.co.il/add_command_prompt_here_shortcut_to_windows_explorer.htm
. Once you have the command prompt in the avrpp folder the command "avrpp
file.hex" loads the new file. To set the fuse bits on a new chip use "avrpp
-fl11100001" and "avrpp -fh1011101" Thanks Bob! Not
necessary for reprogramming one that has already had a prior version of the
software Other programmers are available. http://home.ict.nl/~fredkrom/pe0fko/Fuse-restore-ATtiny45/
-ATtiny45/ Removing the fuse from ATTiny45, restores the AVR to be able to use
low voltage programmers.
8
Another USB solution for the experimenter:- BitWacker http://groups.yahoo.com/group/softrock40/files/9V1AL/UBW%20Emulator/ Updating
of UBW firmware is very easy, using the bootloader. For detailed instructions
see: http://www.schmalzhaus.com/UBW/Doc/FirmwareBDocumentation.html
http://www.schmalzhaus.com/UBW/Doc/FirmwareBDocumentation.html
This is one of the biggest advantages of the UBW - you don't need a hardware
programmer to program new firmware. The new firmware is loaded to the UBW via
the USB port. There is no need to unplug/plug any chips (but I switch off the
power from the SR v6.3...)
9 SERIAL. There is a means of controlling the Si570 using new software in the PIC and connecting to the serial port. A version of Power SDR is used. http://hammap.smallcpu.org/softrock/rs232_509.html This is for more advanced users. It is possible to have 8 switched frequencies as well. http://hammap.smallcpu.org/softrock/rs232_683.html uses the original PIC, but no switched frequencies. The PICs require programming. There is also a small program to set frequency independently. As with many additions, it is possible that this may be developed further.
An earlier, more basic, serial control method using a PICAXE has just been updated. http://groups.yahoo.com/group/softrock40/files/WC5MC/PAXTERM570/ PAXTERM570v072.bas and a PDF. This uses Hyperterm (Found in Accessories - Communication) to send the hex string to the Si570.
10 Two stand-alone controller kits are available. And search for more...
These two kits allow the Si570 to be used with any project without a computer! They may be interfaced with a Softrock that already has a Si570. Build them without the Si570 and interface them like Tony's USB controller, using the PIC socket. They both have a large number of memories for direct frequency input. These will set the Si570 to VHF and higher (if the Si570 is capable).
A complete kit from Kees, K5BCQ, http://groups.yahoo.com/group/softrock40/message/23997 This
is good. It controls the Si570 from 3.5MHz to it's maximum (up to 1.4GHz for
"A" grade chips) and works with a 10MHz startup device
as well. (Some of us got samples, not realising that software was being written
for 56.32MHz startup only.) It has lots of memories and will control band
switching. Like the WA6UQF frequency may be set accurately and there are offset
and multiplier settings. Switch off and restart after setting the start
frequency. The code has been fixed and it now works well. One
of my builds of this controller. Information, code at http://groups.yahoo.com/group/softrock40/files/K5JHF/
with the information here. Still current Jan 2009 http://groups.yahoo.com/group/softrock40/files/K5BCQ%20Stuff/
Si570 controller etc. web site http://www.qsl.net/k5bcq/Kits/Kits.html
Si570 VFO controller WA6UFQ Now at http://home.roadrunner.com/~wa6ufq//universal_vfo_controller.html Also Yahoo group
http://groups.yahoo.com/group/Universal_VFO_Controller/
This comes as a board, PIC and parts list from Digikey. Parts may be sourced
elsewhere, the LCD is a standard 2x16 as sold everywhere. Si570 frequency
minimum 10MHz so ÷ 8 will be needed for 160m. By setting the Si570 startup
frequency to its exact value this controller allows setting to within a few Hz. Also controls DDS30/60.
They both use code developed by John, K5JHF.
http://wb6dhw.com/ This site and it's Yahoo group now includes the Si570 as well as DDS.
Many other ways are detailed in the Softrock group files, but take some finding!
This is not confined to Softrocks! A web search may find other approaches, for example:- http://g4oep.atspace.com/si570vfo/570VFO.htm http://www.pi4raz.nl/index.php?option=com_content&task=view&id=1173&Itemid=46
Some non Softrock SDR RX and RX/TX listed here
http://groups.yahoo.com/group/powersdr-iq/message/1074
Commercial SDR http://www.lazydogengineering.com/LD1home.htm#top
Japanese kit http://zao.jp/radio/soft66ad/
(11a) ROCKY
(11b) FAROS
(11c) POWER SDR SEVERAL VERSIONS
(11d) KGKSDR
(11e) WINRAD
(11f) G8JCFSDR
(11h) DRM Dream
(11i) Spectrum Laboratory.
(11j) Ham Radio Deluxe
(11k) Linrad
(11l) Linux
(11m) GENESIS PSDR
(11n) MAC
(11o) Multi PSK
Which way to connect I & Q? December 2009 http://groups.yahoo.com/group/softrock40/message/39153
There is no standard, using different receivers and different software.... Maybe a switch could be used.
CW? Quite a bit here, connecting keys/keyers to Rocky/PSDR and settings. http://groups.yahoo.com/group/softrock40/message/39746
(11a) ROCKY PROBABLY THE EASIEST SOFTWARE TO GET GOING.
MOST INSTRUCTIONS ARE ON THE ROCKY SITE, LOOK!! For CW and PSK
transmit and SSB receive maybe you will not beat Rocky. http://www.dxatlas.com/Rocky This
works with the USB controller.
In message # 21692 Tony explains how to setup Rocky for 40 fixed frequencies.
http://groups.yahoo.com/group/softrock40/message/21692
Or read it here with my notes added. A good description of Rocky's ini
http://www.wb5rvz.com/sdr/RX_V8_3/Sw1Settings.htm
VAC (section 12) is a way of getting Rocky to see soundcards with Vista (and Windows 7?). At the moment it will only see external USB cards.
A MESSAGE FROM TONY TO HELP BEGINNERS WITH ROCKY.
"Please try the Rocky 3.6 software as a start in getting the v6.3 RXTX+Xtall board to play properly.
[Or any SDR] [However Rocky may not work easily in Vista/W7.]
Alex has lots of good information on using Rocky on his website:
Rocky Software http://www.dxatlas.com/rocky/
>
There is a link posted within Alex's information for using a USB connection with the Si570 and getting the USB driver.
The paddle input for use with Rocky is through the USB I2C interface board, connections K1, K2 and ground. Also on the USB I2C interface board is a PTT output that may be connected to the PTT I hole on the RXTX board so that Rocky controls RX/TX switching. The
USB I2C board map
shows the connections to the board.
I think if you will go carefully through the information Alex has posted on his website you will be able to get the RXTX board playing properly."
Problems with Rocky? Bruce, K2BET says he had troubles with USB control, maybe Rocky got corrupted when he used it with PSDR still running. He noted that uninstalling Rocky did not work as expected, the files were left in "Program Files" He found that deleting these then restored correct operation upon a fresh installation. (Maybe just deleting (or renaming) the Rocky.ini file would have rectified the problem?)
"Using Vista:- Rocky has trouble - it does not see internal soundcards..."the demo version of VAC it will do the job. .. you need to set up another "cable" for output. I think the process is the same as setting up the one that you have. The demo version has a voice that repeats a message every now and the Another way to get around the Rocky issue is to use a USB sound card. Rocky can find
those. And as John said, Winrad and WinradHD work fine on Vista.
73, Tom KM5H"
Look at some of the other software on Alex's site. It is not all free. CW
Skimmer uses a SDR and displays and identifies all the CW signals in a bandwidth
equal to the sample rate of your soundcard if the computer is fast enough!
We are getting far too close to the totally automatic contest/DX catcher, where
has actual operating gone?
(11b) FAROS (Shareware http://www.dxatlas.com
) See http://www.ayoko.net/faros/
A CAT controlled Softrock, look at this, http://groups.yahoo.com/group/softrock40/message/30895
and some around the same date. "My code recognizes a subset of Yaesu FT-817 CAT command set (because I have one). I also needed N8VB vCOM Virtual Serial Ports Driver to route back Faros commands to my program. To be specific, Faros opens COM6 and my program opens COM16 and chat over the Virtual Serial Ports Driver. On the other hand, I did not need to change firmware in ATtiny micro controller.
One COM port, several uses? http://www.eterlogic.com/Products.VSPE.html
(11c) POWER SDR SEVERAL VERSIONS! Different ways to setup and use, look at the relevant help files! It is MORE VERSATILE, SLIGHTLY MORE SETUP OPTIONS, THEREFORE IT IS BETTER TO TRY THIS ONCE THE SOFTROCK IS WORKING.
PowerSDR-SR40 http://powersdr-sr40.sourceforge.net/
(PE1NNZ) Good help files here. couples a Softrock with a Si570 to enable control via a parallel port. (LPT) Look for
other versions on the Yahoo group "when using the PowerSDR software for Softrock (Guido PE1NNZ) with kits utilizing the Si570, and properly configured to use same, the
software itself continuously changes the center frequency as you tune across a band for which you have selected the proper
BPF, etc" Cesco explained to me that this technique makes image
rejection easier. If the soundcard is used at one frequency the relatively small
amount of phase shift at RF over a band my be ignored. Just one setting per band
is needed.
Christos SV1EIA's version http://code.google.com/p/powersdr-iq/
And the Yahoo group http://groups.yahoo.com/group/powersdr-iq/
."Dear All,
Another fresh version of the PowerSDR-IQ has just been uploaded to the downloads area
http://code.google.com/p/powersdr-iq/downloads/list
. This fresh one, is taking care of some issues in the previous version and has
embedded support for the loop.dll method of virtual audio cable, an alternative for some applications to
VAC. These applications can be Easypal FDMDV WinDRM MMTTY MMVARI MSSTV MultiPSK Many thanks to Cesco HB9TLK for his work and his assistance on this
integration.73,Christos SV1EIA"....... This version now has
automatic image rejection for receive. If you use the PowerSDR-IQ v1.12.20,
I've modified the receive passband and you can have really extended receive, you can even try to decode the broadband NOOA satellites by adjusting the filter dials in the lower right corner or drag the rx passband edges with the mouse, iirc up to 40KHz wide.
73, Christos SV1EIA (Confirmed 137MHz 40KHz FM, PE1KTH)
Since you have the M-AudioD44 in supported, you do not need a second card.
Here is a link that describes hot to set it up with the SDR1K but I guess you will get the idea for your RxTx software too.
http://support.flex-radio.com/Downloads.aspx?id=7
The photo figure-1 in page 2 is actually the key to proper connections.
There soon may be a version to control the Si570 by a serial
port. .......A version with USB control via a Brainard board (Not Tony's or SDR Kits)
is available....... Of course, like all SDR programs, Power SDR may be used with an
independent Si570 controller. ...... January 2010 Christos is
developing PSDR v2 with the addition of Si570 USB control. http://code.google.com/p/powersdr-iq/downloads/list
Note this version is still in the alpha stage at FlexRadio it is not finished!
Image Rejection:- Is enabled internally .Flex has automated this whole process
and is naming it WBIR (Wide Band Image Rejection) Note VOX does not work on
unsupported cards.
"By design PSDR-IQ mutes the Windows default sound device when switched to transmit. This is different to the
behavior of PSDR1.9-sr40, My Soundblaster card, which I use for Tx/Rx IQ, was installed as the default sound device so the Tx IQ was being muted when transmit was selected - hence no rf output. Changing the default sound device (in Control Panel) to be the on-board audio hardware has solved the problem. 73, Geoff G3WPD"
Also is a version with USB to I2C support. This is now
available, on http://www.sdr-kits.net/USB/USB_Description.html
is where you find all the information required.
The version of PSDR at http://www.sdr-kits.net/USB/USB_Description.html
works with the USB AVR chip to give smooth tuning of the Si570 over a range of
frequencies, (+/- 3500ppm.) This smooth tuning is also implemented in Fred's
modified AVR code. (See my USB control section 8) This PSDR also has the fixed audio frequency feature to make
image rejection easier.
http://www.wu2x.com/sdr.html A version of the PowerSDR software designed for those using the Softrock as an IF panadaptor in a radio with CAT. Use it with HRD. (Ham Radio Deluxe) Using it with Softrock http://www.zs6buj.com/files/PowerSDR-sr40_Setup.pdf This continues to be developed http://code.google.com/p/powersdr-if-stage/ Talks to Kenwoods directly, also with Ham Radio Deluxe to show the actual frequency. Available soon....
For v1.9.0, in the set up the 'Radio' option can be set to 'SoftRock40' or it is better setting it to 'SDR1000'. With the USB interface that latter gives continuous tuning rather than jumping when you reach the extremes of the displayed tuning range. For PSDR-IQ v1.12.20, you need to select 'SDR(Si570)' as the radio type. Bob G8VOI.
Flexradio download site for latest version of PowerSDR http://support.flex-radio.com/Downloads.aspx?fr=1
If PSDR will not start reinstallation does not work! "You have to find and delete the database.xml settings file which it does not reside in the installation folder.
The database.xml file resides for XP in C:\Documents and Settings\<user name>\Application Data\FlexRadio Systems\PowerSDR v1.19.3
and for Vista in C:\Users\<user name>\AppData\Roaming\FlexRadio Systems\PowerSDR v1.19.3"
Christos
Doug's notes Re: Need idiots guide to setting up Power SDR http://groups.yahoo.com/group/softrock40/message/39028 Bob's follow-up http://groups.yahoo.com/group/softrock40/message/39034
Separate section below for GenesisPSDR
(11d) KGKSDR http://www.m0kgk.co.uk/sdr/index.php and his Yahoo group. http://groups.yahoo.com/group/kgksdr/ CW, SSB transmit with receive only for AM and FM
Notes about setting up SDR with Windows, KGKSDR, VAC, N8VB vCOM Virtual Serial Ports and various digital modes. http://yt1dl.veze.net/sdr.html
"I just loaded a program called M0KGK Receiver which along with a driver called ASOFORALL worked well on my Vista machine. It also has the transmit functions."
(11e) WINRAD http://www.winrad.org/ a good RX only program. Alberto has given up his development and will be releasing the source for others. This works in Full-Screen mode, do not forget that on the keyboard Alt - Tab moves from window to window.
Fred's USB DLL control USB frequency control AND BPF
switching Here is Fred's latest development, a stand-alone configuration tool for the USB controller.
http://home.ict.nl/~fredkrom/pe0fko/CFGSR/
All information on this page.
This replaces the need to use Winrad to setup the USB AVR controller.
See
http://home.ict.nl/~fredkrom/pe0fko/ExtIO_Si570/
Once setup with Winrad [OR the NEW tool], and Fred's DLL the USB controller works with all other SDR programs with USB
control. Just set these to the standard Si570 frequency and the USB AVR compensates for your particular Si570. (This is for current USB controllers from Tony and any others that have Fred's latest AVR firmware.)
It also
manages the band pass filter if it is present and handles special frequency settings in WinRad for using the 2m module.
Install AVR firmware v15.10, Fred's ExtIO_si570v0.8.dll in the Winrad folder,
press H when it is running.
Keep another window on top of Winrad http://www.abstractpath.com/powermenu/ On the http://www.winrad.org/ site, a version in a moveable window by G3OQD.
Winrad usb_xtall frequency control DLL. http://home.ict.nl/~fredkrom/pe0fko/ExtIO_Si570/ link at bottom of page. place it in the Winrad folder, start Winrad and go to options - select input - si570 xtall usb. Cesco And a version for serial control.... http://212.254.198.33/extio_si570_serial.zip
Winrad HD, December 09 Possibly the best version http://freenet-homepage.de/winradhd/
(11f) G8JCFSDR http://www.g8jcf.dyndns.org/
www.alltomelektronik.se/
When you install Dream take note of where it installs, C:\Dream by default, you may wish to direct it to "C:\Program Files\Dream\" Opening the folder and double clicking "Dream.exe" starts it in normal mode, NOT I/Q mode. This will work with a Softrock but not well. The program needs to be started by a Command Line for I/Q use. "Start - Run - Type in "C:\Program Files\Dream\dream" -c 3 OR "C:\Program Files\Dream\dream" -c 4 . (This is if you have put it in "C:\Program Files". Include the "".) The "3 or 4" cause the sideband to be reversed, try each for best results, it may not work using the wrong setting, You may have to toggle the "flip spectrum" box in the Evaluation Dialog to be able to decode a signal. A Dream.bat file may be created containing the text. A .bat file is a text file but renamed with the .bat extension. A shortcut to this file may be made and placed on the Desktop or in the Start Menu.
December 2009 This seems to have changed, in the
program folder where it is installed you will find "receive_iq.bat".
If you changed the folder from the default you will have to edit the path as
above. Then dragging the file to the Start Menu will give a shortcut to it. IQ
mode is stand-alone, it acts as it's own SDR but the frequency has to be changed
by moving the SDR Centre frequency. Using Dream in IQ mode it seems that the centre frequency is the stated
transmission frequency, that's what it works on, I find it works with a centre
frequency from about -1KHz to +12KHz of the nominal.
Using PSDR at 48KHz sample rate, I RX Voice of Russia, quoted as 7325MHz in the listing, with a
centre frequency from 7.304 to 7.337. This includes reception on the centre frequency.
So that equates to nominal frequency -21/+12KHz. This checks with BR-BR5akt on quoted 6.085MHz.
In both modes you may have to toggle the "flip spectrum" box in
the Evaluation Dialog to be able to decode a signal. Note my references to
centre frequency are relevant to those using fixed tuning or independent
controllers. SDR programs with Si570s should be setup to compensate.
Jan says "I have tested the Softrock V8.3 and V9.0 RX with Dream decoder in DRM and CW and SSB (Settings - AM (analog)) modes and it works very well indeed. You may use "Si570 USB Controller" application by Tom DG8SAQ to set the frequency of the Si570. The setup parameters should be set to: Frequency Multiplier 4 and offset 40000 - then set the IF on DREAM to +10 KHz and the frequency read-out should be accurate."
I have not seen instructions for running PSDR, or any other software, with Dream. I am using them together as I have WSPR, using VAC. I do not know but I presume the inbuilt VAC of PSDR does the same. For the baseband audio to be correct the SDR filter must be 10KHz wide.
When the program is running View - Station Dialog.. opens a list of DRM stations. Update this and select a suitable frequency. The SNR and waterfall etc may be observed by View - Evaluation Dialog.. http://www.wwdxc.de/drm.htm can be good site for schedules and TX / reception info.
(11i) Spectrum Laboratory. http://freenet-homepage.de/dl4yhf/spectra1.html SpecLab an audio analysis program. Records and analyses audio. This has many components including an LF soundcard receiver and I/Q input making a SDR receiver. Can be run at low sample rates so that a relatively slow computer can be used. I use four Softrocks at the same time with this software, using a sample rate of 8KHz, for fixed frequency radio monitoring.
"Of course the combination SpecLab/Softrock is not display only. It can be used as demodulator with filtered / converted / inverted audio output, i.e. you can use it as USB / LSB / CW
receiver. With some more fiddling, you can also use it as an FM / AM demodulator (the
"dsp blackboxes" must be used to demodulate the latter).
As a starting point, use the configuration "Image Canceling receivers (I/Q)".."SDR-IQ / 37 kHz / downconverter and adjustable
filter". You will get an error message first (because there is no SDR/IQ connected to your PC). So after loading the
"SDR" -configuration, select "Options"..:"Audio Settings", set the Audio Input Device to "Soundcard" (instead of SDR-IQ), and set the audio sampling rate to 44.1, 48, or 96 kHz (depending on your
soundcard) [But note this will work using as low as 8KHz
sampling but with a narrow bandwidth.]. When you open the Spectrum Lab Components window after this, you'll see both inputs from the (stereo) soundcard go to the digital filter in the middle of the window. The filter actually does the I/Q processing, filtering, and conversion of the complex signal into a real signal which is finally sent to the output.
............You will see three diamonds on the main frequency scale, which control
the input center frequency ("VFO"), the audio bandwidth, and the audio center frequency (traditionally called
"CW pitch").In this configuration, the downconverted and filtered signal is combined
into a real output, because *listening* to an I/Q signal (inphase component on the left ear, quadrature component on the right ear)
doesn't make much sense - though it may sound interesting. This can be configured on the filter control panel (set the option "I/Q output" for
the filter) 73, Wolf DL4YHF . "
A useful post about using the Softrock at LF, you need to join the group. http://groups.yahoo.com/group/SpectrumLab/message/1505
(11j) Ham Radio Deluxe. SDR Console. Simon is issuing Technical Preview Releases of SDR-RADIO .Keep an eye on http://www.sdr-radio.com/
Look here for the first glimpse. Like all Simon's work this is getting a very polished look. January 5 - Send/receive SDR over the internet - soundcard now working - no NR. http://www.sdr-radio.com/Home/tabid/156/Default.aspx This is a stand-alone console, and will also be integrated with HRD to use with, or alongside, another rig .
January 5 2010. Not just for high performance computers. "Running on W2K is good because I envisage people leaving their SoftRock (or
SDR radio) connected to a very small 500MHz PC where you can install W2K. I can't find the reference to these very small PC's but you can get the
mothercard, CPU and disk (actually a CF card) running for < $200. Not enough horsepower for the graphics side but fine for a remote server somewhere out
in the swamps. I will soon use a high performance library from Intel (Intel's IPP) and will
be able to support at least 192kHz / 16-bit sample rates on one of these small computers.
Simon Brown HB9DRV"
(11k) Linrad http://www.sm5bsz.com/linuxdsp/linrad.htm Lots of links to get the beginner going as well as the more experienced. Windows users:- This may be used in Windows but most will find it tricky to learn, the interface can be considered as basic. Give yourself lots of time, read a lot, use the F1 key. Regular users say the display has unique features.
(11o)
Multi PSK A multimode program that uses the I/Q signals from an SDR (Or from a conventional transceiver) http://f6cte.free.fr/index_anglais.htm The unregistered version will read and encode very many modes, payment enables lots of extras. Spend some time with this, the interface is a little different but here is a single program that works with SDR TX/RX. You will need CFGSR or the like to tune a Si570, this is not built in.
There is also an independent SDR program here.
(11l) Linux - Here are a few copy/pastes from group messages. My impression is that you need to know Linux well before you start trying SDR!
> I have a couple of SoftRock Light boards that up until now I have used > with PowerSDR under Windows. I'd now like to use them with Linux> software. Is there any anywhere?
http://www.nitehawk.com/w3sz/dttspw3sz.htm
http://code.google.com/p/sdr-shell/
I've been able to fire up Rocky under wine.
There is also linrad: http://www.sm5bsz.com/linuxdsp/linrad.htm
Linux SDR, Quisk: http://james.ahlstrom.name/quisk/
http://groups.yahoo.com/group/softrock40/message/32870
May make sense to somebody!
Basic DSP - which is a lot of fun to play with - create your own software defined receiver! For Linux and Windows.
http://tech.groups.yahoo.com/group/basicdsp/
Using Wine: MOKGK http://www.m0kgk.co.uk/sdr/download.php
MOKGK 1.0 receive works under wine without trouble.
Hello all just wanted to let everyone I have gotten some positive results with ubuntu linux, dttsp, fldigi.I am able to receive and everything seems to be working well. I'm moving forward on getting the transmitting to work I am also documenting my 5 watt amp project. I have started to document the steps for this setup on my blog. Hope this helps anyone wishing to break away from windows. http://valdez.bz/wordpress Good luck, dan nm5dv.
Linux
"Hi B ob if you want to know any thing about getting FLDigi to work try the linuxham group. W1HKJ will help you out. I not having any problems with
FLDigi. it just tkes a bit of effort to get the settings correct."
"Gerald KJ4EXC.......FLdigi uses the hamlib for rig control and hamlib has the skeleton code
for controlling the Si570 chip, but the support is not yet implemented as far as I know. One option is to implement the Si570 control support
directly in hamlib and the second option is to implement the code in FLdigi to interface with the usbsoftrock program (via UDP sockets)."
Linux For the Si570 control, try VK6JBL's usbsoftrock. It is stable, simple, feature rich and easy to use.
http://groups.yahoo.com/group/softrock40/files/VK6JBL/
I have been using Quisk in Ubuntu 9.04 and previously 8.10 with no problems, there is a python module in the files section which allows you to drive the SI570. I have used this with both the original firmware and the v11 code.
It is much easier to get running than Linrad or dttsp, yet provides most of the functions you need. also its open source in Python which is very nice to experiment in even if you are only slightly software
literate. Regards/73 Tony G4DEU
If you want a bigger challenge, but one that lets you run data decoders (I use
fldigi), and add software sub-receivers (e.g. for WSPR), I have
described how to set up a 6.1 tx/rx using dttsp. http://www.whabbit.demon.co.uk/why1.html
I use python, so adding the si570 won't be hard if it already has a python driver. I shall do it once I've built my 6.3, but anyone else is
welcome to do it first. There will be a need also to edit the hamlib driver, if you want hamlib to couple the (virtual software) radio to
other programs Have fun --David G8SQH
I run QUISK: http://james.ahlstrom.name/quisk/
with module: quisk_hardware_V90.py I put the module in the files area of softrock40.
Don
For the v6.3 see http://groups.yahoo.com/group/softrock40/files/VK6JBL/
which integrates well into quisk, but offers only discrete frequencies via USB control.
I am using the K5BCQ Si570 Controller for multi-band auto band switching (with Alex's
ABPF). I also can switch to using the UBW for USB control,
but I find the Si570 Controller more convenient - http://groups.yahoo.com/group/softrock40/files/G3VBV/Si570_Controller_with_Softrock.txt
- lengthy, but don't let it scare ya. 73 ... Sid.
Soundcards and Linux.
> I'm wondering if there are any other good options for a PCI sound card for SDR other than the Delta 44 or Delta 66 or Delta 1010 or Delta
1010lt that are good for Linux? It would be nice to have 192 KHz sampling with low pass filter passing the whole 192 KHz. Do you know of
any other good options?
>Hi Rob, I use Debian Squeeze and some days ago I was looking for a well supported external usb soundcard, for using it with
softrock-alike receivers, and I found useful reading these pages: http://alsa.opensrc.org/index.php/Alsa_Preferred_Soundcards
http://alsa.opensrc.org/index.php/Sound_cards
http://www.alsa-project.org/main/index.php/Matrix:Main
Also you may be sure of linux support of a certain soundcard by looking in the source tree:
/usr/src/linux/Documentation/sound/alsa/* and/or running the kernel configuration program (make
*config) and having a look in "Sound card support" --> "Advanced Linux Sound Architecture".
>I use the E-MU 0404 PCI card which is supported by the kernel emu10k1driver module. The
E-MU 0404 USB which I also have does not work with
SDR, the input controls are not seen for that one though I have been using it for Guitar work for at least a couple of years now.
73 ... Sid. [But he has only managed 48KHz]
11m GENESIS PSDR
http://www.genesisradio.com.au/GSDR/
A new version of Genesis PowerSDR(TM) V1.1 is now available for download. Features include - large PANAFALLT display mode- 99 store/recall memories- independent TX and RX I/Q channel swap- main screen optimized for two monitor configuration- detailed 32x display zoom- unique RX and TX image calibration. This exe is the program, it does not install itself.
Feb 2010 Robby:- "I have put together some builders notes on a couple of the Genesis Radio kits
http://www.wb5rvz.com/sdr/genesis_g40/g40/
http://www.wb5rvz.com/sdr/g3020/
"
(11n) MAC I've uploaded [This will be in Yahoo Sofrock40 files
area] under my callsign (VK6JBL) a program I wrote for myself, but for which I gather there is interest from other people as well. This is primarily intended to allow Sebastian Mrozek's DSP Radio to control a RXTX 6.3 fitted with Tony's USB-I2C board. It will also function standalone and should in theory control a kit from
sdr-kits similar to the USB_Synth program, however this is untested.
Limited testing, full of bugs etc etc. It's also limited to Mac OS 10.5 and intel processors at present. There's a lot of work still to be done, but maybe someone finds it useful now.
Someone said "have a look at JavaSDR. https://java-sdr.dev.java.net/
I find it to be pleasant software. I use it on OS X but it runs on Linux as well.
Fred's AVR software provides smooth tuning and automatic
BPF switching with various software see http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/ I
advise all to get their USB AVR chip reprogrammed with Fred's code. This gives
much more flexibility and features than the chip's original firmware. Use Winrad
and Fred's dll to setup this revised chip, calibrate it once and it's right for
all SDR software that uses USB to control the Si570!
Cecil can provide a programmed AVR, you need to send him the software , or at least make sure he knows what you want on it!
Look above in Section 4 for some links for AVR programming.
Tony is now supplying the AVR with Fred's V 15.xx software.
12 Modes not yet supported by these SDR programs.
This is getting a bit more complicated, but many modes could be run together with an SDR program. The problem is going to be getting audio from one to another. One way is to use a separate soundcard for the other program and link them together by audio cables. I have found that three USB audio "cards" will operate together. Just plug them in, sorting out which is which with the software can be a matter of trial and error. It seems very few use this method, it is potentially inferior to VAC but do not be afraid to try more than one soundcard!
Recently discussion about Virtual Audio Cable (VAC) has described how to link programs by software, as time goes by maybe programs will have this linking built in. Some soundcard drivers may allow linking by loopback, (What you hear) VAC http://software.muzychenko.net/eng/vac.html It has been said that the regular announcements that mar the unpaid version do not actually have much effect on SDR usage...but the writers do need support. Here is my setup PSDR, VAC, WSPR http://sites.google.com/site/g4zfqradio/softrock-wspr-psdr-and-vac
Notes about setting up VAC, N8VB vCOM Virtual Serial Ports and various digital modes. http://yt1dl.veze.net/sdr.html This helped me to use WSPR and DRM with PSDR.
Loop.dll, I'll add more when I understand it better. It can be used to connect certain software, eg MMSSTV and Easypal (Digital pictures) About winpsk2.13 you have to patch the pskcore.dll, and this has never been tested with vista ... don't expect it to work. (but someone has said it does) see here: http://212.254.198.33/PSKCore.zip
Use WIN XP SP3 and WinPSK 2.13 You need loop.dll in windows/system32 and the modified pskcore.dll from HB9TLK. See in Files section. Copy this pskcore.dll in the program folder from WinPSK. This is the folder, where you find WinPSK.exe. I think thats all. The modified pskcore.dll has 180kB, the original 184kB
13 Audio files to test software without a SDR Flex Radio website www.flex-radio.com . If you go to their Support and then Downloads you can find example I-Q files. Just enter "demo" in the search box. I believe that there are CW and SSB files there.
"There are two 600Mb files on my website < http://home.ict.nl/~fredkrom/pe0fko/IQRec/
> One CW contest and one SSB contest, lot of signals. 73, Fred PE0FKO"
Another, shorter wav file (compressed with WINZIP) is also available at: http://www.wb5rvz.com/sdr/resources/WAV_files_short.zip
14 Miscellaneous
http://www.websdr.org/ Listen to SDR from various places around the world. Or setup your own server?
A site having links to just about all aspects of SDR http://f4dan.free.fr/sdr_eng.html
Another approach to SDR, looks like it is more for the experienced constructor but no surface
mount. http://yu1lm.qrpradio.com/
HOMEMADE BOARDS a cheap way of making "PCBs". I've lots of double-sided board which I use for my projects. Some Si570 related examples.
G4ZFQ January 2010 still updating.
http://homepages.wightcable.net/~g4zfq/ Main Site Index
The background
is an Argo display of QRSS reception on 80m.
http://homepages.wightcable.net/~g4zfq/Greyline-index.htm My "research" mainly using Softrocks to investigate dusk/dawn enhancements at greyline (grayline).