[Elecraft] K3 Filters for the 2nd receiver?

[Mike Fatchett W0MU]

I was afraid of that....

I want the rig to do it all HI!

I can probably do without the FM in this rig then.

I am into RTYY, PSK, CW and SSB contesting.  Ok I have no life.....

Thanks for the insight.

Mike


On 12/12/07 4:26 PM, "Don Wilhelm" <w3fpr at embarqmail.com> wrote:

> 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.
>>   
>>