I have just installed an INRAD 2.8 kHz filter in the first IF of my OMNI VI
and have gotten some improvement in the high frequency response. There is
virtually no lower frequency output, however, and I guess this requires the
other INRAD mod.
Question: what are the practical effects of an "unbalanced" SSB signal? As
Barry has noted, there is an enclosure with the 2.8 kHz filter that says
the carrier "may have to be balanced." I haven't done anything to balance
the carrier and cannot notice any problem when listening to the OMNI in
another receiver. What should I be looking for?
Also, I'm wondering whether buying the INRAD 2.8 kHz filter for the second
IF is worth it. George says it tends to smooth out "ripple" in the
audio. At this point I consider the OMNI's SSB audio OK. How much
improvement would that second IF filter provide?
By the way, pulling that # 52 plug on the IF/AF board greatly improves the
CW sidetone IMHO.
73,
John, W3ULS
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