[Elecraft] Filters

[Don Wilhelm]

Mike,

Unless you are doing SSB contesting, you will likely notice little 
difference between the 2.7kHz and the 2.8kHz filters.  The skirts on the 
2.8kHz filter are a bit steeper than for the 2.7kHz.
If you have the subRX and want to do diversity receive, it would benefit 
you to use the 2.8kHz filter in both the mainRX and the subRX.

Unless you have really critical ears, you will not notice a difference.

Yes, you can use the 13kHz filter for AM.

73,
Don W3FPR

On 1/30/2017 8:21 PM, mtruss wrote:
> I have purchased a used  K3, serial number 3000 or so, it has been sent back
> to Elecraft for updates etc  and returned to me working great so far. I
> would like to update some things especially the roofing filters first so the
> question I would like to ask is  Has anybody upgraded from the 2.7 five pole
> filter to the 2.8 eight pole filter? I understand the 8 pole is a wider
> filter with 3 more filtering  crystals , does it make any difference in
> received audio? also could I use the fm filter for use in the am position.
> Any other suggestions would be appreciated.
> Thanks
> Mike  W8FLT
>
>
>
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