[Elecraft] matching cw filters

[Charles R Tropp]

Hi Scott!

If I understand your question correctly, you have a K3 with the KRX3 
sub-receiver installed and now you want to add CW filters for both but 
are not sure as to whether you should order and/or install matching 
filters in both. Firstly, the only reason to purchase matching filters 
at the same time is to insure diversity receive coverage such as low 
signal work on 160 meters with specialized antennas. If that is not your 
goal, then it really does not matter. Secondly, matching offsets on CW 
filters only applies to the five pole filters. (200Hz & 500Hz). If you 
are purchasing the 8 pole filters (250Hz & 400 Hz), there is a 0 offset 
so there is nothing to match. Thirdly, you do not have to have the same 
filters in the Main and Sub-Receivers. For example you could have narrow 
filters in the Main to allow copying of the DX station and moderate 
filters in the Sub to listen for the pileup.

I hope this answers your questions.

73, Charles, N2SO


On 7/24/2012 10:44 PM, Scott Dunlavey wrote:
> going to order some cw filters ... what I would like to do is this...
> (with a sub rx!) get  400 Hz X 2...  and 200 Hz x 2... my question is,
> would it be better to wait on the 200 Hz if I cant get both 200 Hz at
> the same time or can I get one at a time... get the other later on...
>
>
> scott
> w2ntv
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-- 
Test Charles R Tropp
Staten Island NY 10314
USA