After reading quite a bit on the WWW about SO2R.... I am assuming that you place band pass filters (what ever ilk) in line with BOTH radios. That being the case (if it is) then using bandpass filters
You can use one set of filters because each of you rigs is on different band at any given time. 2 SIX PACKS from WX0B and one set of filters (W3NQN filters are the best choice) can do the job. But se
Radios are already, only with a very few exceptions, very good for harmonics on the output. I wouldn't waste a filter there. Typically I find them 60 dB down or more. The real problems on TX are the
Lee, You've just begun to scratch the surface of the interstation interference problem. There are a lot of things going on, and the filters actually serve multiple purposes. Rather than go into it he
and eliminating the broadband noise that synthesized radios transmit both below and above the band they are transmitting on. Not really. The second harmonic of 40 might be 40 dB down, but the 20 mete
I went through this here getting ready to duplex on 160. In nearly all radios I've looked at the noise doesn't come from the synthesizers. It comes from the early IF stages in the transmitter just a
" ... That means you would have to have filters for 6 bands times 2 or 12 filters. if you were running 160, 80, 40, 20, 15, and 10 meters.... " It seems to me that in principle one actually only need