[Elecraft] K3 #170 CW Filter oddity

[Rajiv Dewan, N2RD]

Added note: the change in the DDS frequency occurs by just changing the 
filter width or selecting the narrower filters.

Raj

Rajiv Dewan, N2RD wrote:
> I have 250Hz, 400Hz and 2.8KHz roofing filters installed.  After 
> update to the latest firm ware I am noticing that the radio goes 
> really deaf when the 250Hz or the 400Hz filters are used.  I have set 
> the appropriate gain of 4db and 2db, respectively for the 250Hz and 
> 400Hz filters.  The FLX FRQ is 0.0 for all.  But the deafness is much 
> more profound than a few dB.
>
> I noticed that the peak in my signal is not where CWT indicates 
> perfect tune
> While I am tuned to a CW signal at 7.02706KHz, I turned on CONFIG:DDS 
> FRQ and noticed that this frequency changes from 3.581367 MHz to 
> 3.581579 MHz and the radio goes deaf.  No change in tuned frequency.  
> I checked that the FL FREQ for these filters is 0.0.  What gives?
>
> Does any of you have the same behavior?
>
> Regards,
> Raj, N2RD
>
>
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