Notes About Stations Observed. Last opened for editing January 02, 2010 But not all updated.
November 2009 3250.03KHz This seems to be Pyongyang, Korea. It is one of two stations listed on this frequency, is audible so maybe one day I will identify it's Korean or Japanese announcements. [13-20.30, 21-21.50, 22-22.57, 23-23.50, 50KW ND 125°33E 39°05N ] The frequency offset may also help. At this time of the year a trace is visible from about 09.30. The other station listed is Honduras, HND R Luz y Vida, San Luís [0953-1230/0039-0401] [088°25W15°08N] (9.34-0.5) I see a signal that fades in and switches off as the listing says. ~3250.025KHz
November 2009 BRAZIL. 5045 better than the other 24h Brazilians audible, 4885 and 4915, According to Célio Romais` Panorama, 5045 is R. Cultura Ondas Tropicais, Belém, Pará which has been reactivated . I receive it around 5044.985KHz. Marituba, the Transmitter site. Lots on the internet about this one, use Google translate.
November 2009 ~4914.98 [R.Difusora de Maca] [24h B 10Kw 5104W 0004N Transmit site Macapa ] Audible, Macapa used regularly as ident. Seen close to this frequency, ending around 23.30 possibly R.Anhanguera 4918W 1643S 0800-0500 (22.10) 25Kw] ~ 4915.02 steady to 23.30 Seen to open @ 08.00?)
November 2009 Honduras, 3340, HRMI, [1Kw 12-05.00 or 24h][87°20W 14°15N] 3339.993Khz A signal on this frequency has the characteristics expected. It is weak, so the frequency offset may be all I get as confirmation. It does seem to be somewhat irregular so if anyone can identify when it is off or on....
The time signal from Guayaquil, Equador. 3810KHz. October 2009, this signal has gone off-air. December 2009 This signal has returned, it transmits LSB with inserted carrier so a receiver set on CW will pickup the 1KHz time pips on 3.809KHz. These are now every 10 seconds, with an announcement before. These pips are often audible in the morning when the band is quieter. Sometimes the announcements may be heard using LSB 3810. This path is showing different results than others. There is little sign of a dusk enhancement, signals gradually rise and a definite peak after my dawn is not uncommon. As with all my observations I can only say that I assume the transmitter identity, that power and antenna remains the same and although the effect of interfering signals are usually obvious I can only monitor irregularly, maybe an average of one short period per night. 2010 I am continuing for another year to see if I can identify any seasonal effects.
3320KHz, [2006 It is slightly offset at about 3320.012KHz.] 2007 it is now very close to nominal frequency. (GPS based marker) It is stable on this frequency. Listed as R Sonder Grense via Meyerton. 28-08'E 26-35'S 100Kw. Schedule 16.00 or17.00 to 05.30 (changing to 7185 then 9650 at 08.00) This signal also has characteristics similar to the other presumed Africans, coming up strong before sunset and fading rapidly after sunrise. (North American stations remain visible for several hours after dawn.) Programming heard, African voices/music. RSG has satellite transmissions (2006) at 68.5°E (KU) and 62°E (C) Also streams (Luister popup, active X must be enabled) http://www.rsg.co.za/ Click:- Luister. Confirmed, audio stream is that heard on 3320KHz.
Some of the reliable signals break their transmissions at night. This makes it uncertain if a dawn peak is of higher strength than may have been obtained overnight, but the absence of a peak is definite!
This list below needs updating, some of these may not be transmitting now, or may have changed frequency. I have tried to date those I know.
3255KHz, BBC 100Kw Meyerton. (One listing says UK!) 28-08'E 26-35'S 03.00-06.00 & 17.00-22.00 There is interference from a nearby frequency but with better propagation was noted above the interference, the carrier was free so could be monitored.
4930KHz 2006 VOA relay Selibi-Phikwe Botswana 27-39'E 21-59'S 03.00-06.00 & 17.30-22.00 100Kw Other stations on the same frequency R. Asgabad 2 Turkmenistan 50Kw. Dawn around 01.00. This is, like VOA, listed to switch off at 23.00 and could well be the station heard behind the African later in the evening. Under different propagation conditions could influence recordings.
3306KHz Harare Zimbabwe. 29-51'E 19-26'S Listed as 24 hours 50Kw. Either conditions were bad when I checked or it is running lower power. 18/19 May Weak signal, was visible all night but no chance of an ident.
3396KHz Zimbabwe, from their Gweru site. June 2007 still on August 2008. I am looking at this station, it is not absolutely reliable but can be identified sometimes. It is close to it's nominal frequency, the audio is obscured by QRM later at night although the carrier is easily seen an recorded.
4828KHz Zimbabwe. As 3396 above but NOT the same programme. Music, station announcements seem rare. August 2008
5019.87KHz Solomon Islands. I do not expect to positively identify this one. Various SWLs measured this some time ago, signals are consistent with what would be expected on that path. June 2007 the signal is just about seen at this time of the year, the path is borderline.
4910KHz Lusaka Zambia. 28-15'E 15-30'S 02.45-05.15 & 15.55-22.05 Radio 1 Vernacular and English. Other stations on the same frequency AIR New Delhi, Tennant Creek Australia - no problems, AIR can be stronger than Lusaka until it switches off at 17.40. 18 May 2006 a station separated by about 5Hz was matching Zambia's strength. Careful setting of text file frequency could avoid this, or recording the signal and processing after could be a solution? SpecLab has the option of saving a .wav file. Ident 03.43 18 May ...Radio One, Later..Write to PO Box... Lusaka. Unreliable? Off air from 20 May 2006.
4965 16.00-03.55 Zambia Christian Voice 30 May 2006 Strong signal, listed as Makeni 35Km from Lusaka 100Kw ? English, religious programmes. See latest recordings. Easily identified but due to its early closedown will not be mutual greyline here in the morning.
2325KHz Tennant Creek Australia Northern Territory. 50Kw ends 21.30. I'm just checking this, wondering if there is any relationship to the existence of enhancements observed here and on the African stations. Probably not, but in the short while I have looked at the Africans the first time possible enhancements were seen they coincided with the return of possible dusk/dawn enhancements on the Australian signal. Other NT stations Katherine 2485KHz, Alice Springs 2310KHz, I have lots of recordings from this.
Note I am using data published on the internet for the identification. As these are home services actual identification is no so easy, local dialects and accents, weak signals, heavy static, lack of regular announcements... One answer would be to record the signals. I have, when heard, no reason to doubt the basic information. Sources:- HFCC, British DX Club, eibi, Prime Time Shortwave and Magna database of EIBI and AOKI http://www.orchidcitysoftware.com/IMAGE59.HTML broadcaster's sites if applicable and other SWL lists. As always, recordings must be verified by listening to the signal for signs of interference and by examining the waterfall captures.
There is a potential for mutual Greyline to Africa in our winter evenings. (3320, 3306 4950 and 4965 could be candidates)
Grayline alternative spelling.