Mike,
To transmit FM you will need the FM filter in the main receiver (it will
also be used for transmit).
I would suggest that you re-examine your filters in the main receiver.
If you will not operate digital modes, you can likely do without the 200
Hz filter. If the 200 Hz filter must stay, then I would suggest you
eliminate the 1000 Hz filter unless you are a CW contest type that likes
to listen with a wide receiver - during normal operating, your 1.8 kHz
filter in conjunction with the DSP filtering should work just fine.
OTOH, if you do not operate a lot of sideband contests, the 1.8 kHz
filte could go and the 1000 Hz can stay.
These are only my suggestions, choose your filters to match your
operating preferences. The DSP will handle reduced bandwidths just fine
until an offending S-9 +30 signal appears within the roofing filter
bandpass. That will likely only occur during contests or other times
of intense operating activities. With the 2nd receiver, one could
always put the in-between filter widths there and switch to receiving
with the 2nd receiver when the additional filtering is needed. In other
words, the FM filter, the 2.7kHz, the 1000 Hz, 400 Hz and 200 Hz in the
main receiver and 2.7kHz, 1.8 kHz, 1000, and either 400 or 200 in the
2nd receiver - or something like those combinations, it is all up to you.
73,
Don W3FPR
Mike Fatchett W0MU wrote:
I had the impression the 2nd receiver had no filters at all.
I had intended to put in a 2.7k 1000 and 400 filters in the 2nd receiver.
I also wanted to be able to operate FM and was going to put the FM filter in
the 2nd receiver. Will this work?
The main receiver was going to have the 200, 400, 1000, 1.8 and 2.7 filters.
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
