[Elecraft] Filters for K3

[Dave Hachadorian]

----- Original Message ----- 
From: "Jim Miller KG0KP" <JimMiller at STL-OnLine.Net>
To: "DM4iM" <hamradio at vr-web.de>; <elecraft at mailman.qth.net>
Sent: Tuesday, December 29, 2009 7:23 AM
Subject: Re: [Elecraft] Filters for K3



> Before you buy the 1.8, set your DSP to 1.8 and spend some time
> listening at
> that width to see if you like it
------------------------------

When you set BW=1.8, set the FC at about 1.05.  That's where most
people agree that SSB sounds best at that narrow bandwidth.

In practice, the best way to get to that BW and FC is by
normalizing, then putting the DSP controls into SHIFT/WIDTH mode
and adjusting only HI CUT. Use only as much HI CUT as the QRM
conditions require. Thanks to W0YK for that valuable tip.

I use the 1.8 on SSB, but I told the K3 that it was a 2.1, so it
cuts in when the DSP BW is reduced to 2.1 (by using HI CUT). The
1.8 filter sounds great at DSP BW=2.1. DSP BW can be reduced as
far as 1.5 if necessary, and SSB remains intelligible.

Dave Hachadorian, K6LL
Yuma, AZ

























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