In looking over the reviews and other on-line sources
for rigs, it looks like some of the older Ten Tecs
(Omnis, Corsairs I and II, but not the Paragons) use a
low first IF (9 mhz or so) with crystal filters there,
as well as in the 2nd IF. So the filters in the first
IF would be a roofing filter, correct? Just like what
Icom and Yaesu are now discovering, if I understand
the roofing filter concept. This should make the close
in spacing on the Corsair II and these other rigs very
good, correct?
73s John W5TD
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