It works similar to facsimile transmissions. Each colour has it's own frequency in SSTV mode and the software simply codes the colour into an audible frequency tone that can be interfaced into the microphone system of the radio. The receiving end software simply decodes the frequency tone back into the colur.
SSTV is a relatively fast method of transmission, each transmission burst of SSTV between 8
seconds up to 600 depending on the mode and picture size.
Common frequencys are
2 Meters 145.5
6 Meters 50.680
10 Meters 28.680, 28.690, 28.700
11 Meters 27.420, 27.700 (RX only)
15 Meters 21.340,
20 Meters 14.230, 14.227, 14.236
40 Meters 7.170, 7.172 ,7.033,7055
80 Meters 3.845, 3.857 ,3.630
160 Meters 1.916
