Lennart Michaëlsson wrote:
... and what filters do the test pilots recommend?
Presently I have 6, 2.8, 0.4 and 0.25 kHz - all being 8 pole.
Would a 2.8 and a 0.4 be enough to keep cost down for a non FM/AM man?
It depends on what you want to use the 2nd receiver for. I am primarily
interested in using it for finding the correct spot in a CW pileup to
call a DX station, so I will mostly be using a relatively wide
bandwidth. Therefore I chose to use a single 2.8 kHz filter in the sub
(I have 400 Hz, 1 kHz and 2.8 kHz in the main rx).
I am also interested in experimenting with diversity reception. If I
were to do this seriously I might want another 400 Hz to match the one
in the main. Also, for diversity reception it's best for the filters to
have the same offsets (which is why I swapped the 2.7 in sub receiver
for a 2.8 to match the one in my main rx).
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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