[Elecraft] P3, what lies ahead?

[Bill Conkling]

Thanks, Don.

I did not know this.  

...bill   nr4c

-----Original Message-----
From: Don Wilhelm [mailto:w3fpr at embarqmail.com] 
Sent: Thursday, February 24, 2011 6:12 PM
To: nr4c at widomaker.com
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] P3, what lies ahead?

  If you are using a filter width that is greater than about 1.5 times 
your sidetone pitch, the filter must not be centered at your CW pitch - 
it must be skewed so that you do not receive the opposite sideband.
That offset is done automatically in the K3.

73,
Don W3FPR

On 2/24/2011 12:29 PM, nr4c at widomaker.com wrote:
> Now, I managed to smooth out my filter gains by using Hamscope which
> is an audio spectrum visualization tool.  This worked pretty well.
>
> Funny thing, my 200Hz fileter with a -86Hz offset is pretty well
> centered about the centerline, but my 400 Hz 8-pole with 0 offset, is
> way off center!  So are the 1.8 and 2.8 filters.  What gives....?
>
>
> ...bc   nr4c
>
>