[Elecraft] Buying a KRX3 - Filter selection help needed!

[Don Wilhelm]

Jeff,

Working split, you will be listening to the 'pack' with the subRX,
Since your interest does not include diversity, I would suggest that you 
install the width filter for CW that will provide the most benefit in 
separating the 'pack' so you can tell who the DX is working.

On that basis, you might want to put the 250 Hz in the sub,  You could 
also move the 1.8 to the sub for narrow SSB capability.
However, if you think you will ever use diversity, match the filters in 
the main.
Given the wide width of the 2.7 filter, you can cheat (rather than 
matching the offset) by telling the K3 that the filter offset is the 
average of the two offsets.  You could not do that with narrow filters, 
but it works OK at wider widths.

73,
Don W3FPR

On 3/2/2013 2:34 PM, Jeff Hall wrote:
> Hi everyone,
>
> I need advice on picking filters for a KRX3.
>
> I currently have the following filters in my K3:
>
>
> 2.7 kHz 5 pole
> 1.8 kHz 8 pole
> 400 Hz  8 pole
>
> Should I put the same filters in the KRX3? At this time, I don't have the capability to take advantage of "diversity receive".  It's been a while since I researched filters, but if I recall, it is only the 5-pole that has an "offset" that needs to be matched, correct?  Is it overkill to add the other two 8-pole filters if I'm just using the KRX3 to chase DX working split?
>
> Thanks!
> Jeff
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