Good Morning All, The Rocky 3.4 SDR software is ideal for use with the v8.3 Lite+Xtall receiver. The Multi-Band selection on the DSP Settings page together with some editing of the Rocky.ini file can provide easy center frequency selection. The Rocky.ini file Multi-Band center frequency selection lines may be expanded to include 40 lines for each of the center frequencies covered in Tom's v2.5 code. Since the v2.5 code results in a two step operation to select a center frequency on the v8.3 board, each ini file line could look like the following example: 1.820_MHz_160-BPF_B-0_F-0000=1820000 What would then appear in the Rocky Multi-Band center frequency selection list would be: 1.820 MHz 160-BPF B-0 F-0000 This would remind the user that he needs to have the 160m BPF board plugged onto the v8.3 receiver board, bank 0 needs to be selected at the DIP switch and the frequency selection at the DIP switch is 000 which could correspond to 1.820 MHz. I have tested Rocky 3.4 with the Rocky.ini center frequency table filled out to 40 entries and Rocky does collect and save the I/Q balance data for entry 40 in the file. ====================================================== My notes:- Open Rocky.ini, (found in the C:\Program Files\Alfreet\Rocky) with a text editor (eg Notepad) I suggest a backup copy of the original Rocky.ini is made before you start. In between [Bands] and [Windows] lies the region for personal frequency bands. Each band will have its own RX and TX calibrations. I do not know the limit for the number of entries, Tony has tested 40.I have entered more, they appear in the drop-down frequency selection. I have not tested all these for RX/TX calibration but I think it should work. You may copy and paste from here then edit as required. The first part of each line is displayed in the drop-down frequency list, (this may be long, scroll up and down). The last figure, eg 1820000, is the centre frequency in Hz that is set by the USB controller. Any combination of bands and frequencies may be entered. Example:- First entry 1.820_MHz_160-BPF_B-0_F-0000 Appears in the drop down window and contributes to the name Rocky associates to the dat file for IQ balance. This is Tony's reccomendation to remind you of the bandpass filter and switch positions (if you are using PIC control) You may make this section as you wish, if you are using USB control it will need to finish with the frequency in Hz eg 1.820MHz enter =1820000 For example 1.820_MHz=1820000 Will appear as 1.820 Mhz in the drop-down and the USB will set 1.820MHz as the centre frequency. [Bands] 1.820_MHz_160-BPF_B-0_F-0000=1820000 1.880_MHz_160-BPF_B-0_F-0001=1880000 1.920_MHz_160-BPF_B-0_F-0010=1920000 3.520_MHz_80-BPF_B-0_F-0011=3520000 3.550_MHz_80-BPF_B-0_F-0100=3550000 3.600_MHz_80-BPF_B-0_F-0101=3600000 3.650_MHz_80-BPF_B-0_F-0110=3650000 3.680_MHz_80-BPF_B-0_F-0111=3680000 3.710_MHz_80-BPF_B-0_F-1000=3710000 3.740_MHz_80-BPF_B-0_F-0000=3740000 3.780_MHz_80-BPF_B-0_F-0000=3780000 7.020_MHz_40-BPF_B-0_F-0000=7020000 7.060_MHz_40-BPF_B-0_F-0000=7060000 7.100_MHz_40-BPF_B-0_F-0000=7100000 7.140_MHz_40-BPF_B-0_F-0000=7140000 7.180_MHz_40-BPF_B-0_F-0000=7180000 7.150_MHz_40-BPF_B-0_F-0000=7150000 7.175_MHz_40-BPF_B-0_F-0000=7175000 10.13_MHz_20-BPF_B-0_F-0000=10130000 14.02_MHz_20-BPF_B-0_F-0000=14020000 14.06_MHz_20-BPF_B-0_F-0000=14060000 14.10_MHz_20-BPF_B-0_F-0000=14100000 14.14_MHz_20-BPF_B-0_F-0000=14140000 14.18_MHz_20-BPF_B-0_F-0000=14180000 14.22_MHz_20-BPF_B-0_F-0000=14220000 14.26_MHz_20-BPF_B-0_F-0000=14260000 14.30_MHz_20-BPF_B-0_F-0000=14200000 14.325_Hz_20-BPF_B-0_F-0000=14325000 18.08_MHz_20-BPF_B-0_F-0000=18080000 18.12_MHz_30-BPF_B-0_F-0000=18120000 18.15_MHz_20-BPF_B-0_F-0000=18150000 21.02_MHz_15-BPF_B-0_F-0000=21020000 21.06_MHz_15-BPF_B-0_F-0000=21060000 21.10_MHz_15-BPF_B-0_F-0000=21100000 21.14_MHz_15-BPF_B-0_F-0000=21140000 21.18_MHz_15-BPF_B-0_F-0000=21180000 21.02_MHz_15-BPF_B-0_F-0000=21020000 21.06_MHz_15-BPF_B-0_F-0000=21060000 21.10_MHz_15-BPF_B-0_F-0000=21100000 21.14_MHz_15-BPF_B-0_F-0000=21140000 21.18_MHz_15-BPF_B-0_F-0000=21180000 21.22_MHz_15-BPF_B-0_F-0000=21220000 21.26_MHz_15-BPF_B-0_F-0000=21260000 21.30_MHz_15-BPF_B-0_F-0000=21300000 21.34_MHz_15-BPF_B-0_F-0000=21340000 21.38_MHz_15-BPF_B-0_F-0000=21380000 21.42_MHz_15-BPF_B-0_F-0000=21420000 21.46_MHz_15-BPF_B-0_F-0000=21460000 24.9_MHz_15-BPF_B-0_F-0000=24900000 24.94_MHz_15-BPF_B-0_F-0000=24940000 28.02_MHz_15-BPF_B-0_F-0000=28020000 21.06_MHz_15-BPF_B-0_F-0000=28060000 28.18_MHz_15-BPF_B-0_F-0000=28180000 28.2_MHz_15-BPF_B-0_F-0000=28200000 28.5_MHz_15-BPF_B-0_F-0000=28500000 [Windows]