[Elecraft] 100 and 50 hz DSP filtering

lyle johnson kk7p at wavecable.com
Tue Jul 26 18:10:07 EDT 2011


You are probably using Rx EQ and have your preferred 
sidetone pitch peaked to something more than 0 dB.  RxEQ 
is not available at these two narrow bandwidths.

Note:  It seems that many people believe that the Rx EQ is 
an *additional* filter cascaded with the normal DSP 
filter.  It is not.

In general, if you want to apply RxEQ shaping in CW mode, 
I recommend that you set your preferred sidetone pitch to 
0 dB and use cuts on either side, or for whatever shaping 
you prefer, and not use any peaking above 0 dB.  That will 
avoid this problem.

73,

Lyle KK7P

> Why is it that there is a significant drop in signal 
>level (on CW) when
> either of those two filter widths are selected? 


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