[Elecraft] K3 filter question

[Don Wilhelm]

  Adi,

How much you can "fool" the offset depends on the filter bandwidth.
70 Hz is a small percentage (2.6%) of a 2.7 kHz bandwdth - you will 
hardly notice the difference, and if you do, you have very good ears, or 
are using instruments to measure it - most of us simply use our ears for 
SSB.

For a 400 Hz filter width, 70 Hz makes a big difference (17,5%), so if 
you want to operate diversity mode with narrow CW filters, it is best 
that you have them matched or use only the 8 pole filters.

73,
Don W3FPR

On 4/13/2011 8:07 PM, Adi Andrei wrote:
> I have the 5 pole 2.7 filters for main and sub RX.
> One filter offset is -.94, the other is -.81
> In order to do diversity receive, I have to set them both to about -.88
>
> My question is: what happens when you set a filter offset differently than the one specified (as in my case) ?
> How is this supposed to  influence operation (normal as well as diversity mode) ?
> How can things be improved, short of buying new filters?
>
> Thank you,
>
> Adi
> 2E0TTX
>