Posted by
Dick Dievendorff on
Nov 11, 2008; 3:30pm
URL: http://elecraft.85.s1.nabble.com/FLx-GN-Adding-Db-gain-tp1330201p1485504.html
There is a table of starting values for each of the crystal filters in the
K3 Utility Help for the Filter Configuration page.
Dick, K6KR
-----Original Message-----
From:
[hidden email]
[mailto:
[hidden email]] On Behalf Of Ken_ke2n
Sent: Tuesday, November 11, 2008 7:23 AM
To:
[hidden email]
Subject: Re: [K3] [Elecraft] FLx GN Adding Db gain
FLx GN
I've bought a 400hz eight pole CW filter. Although the manual recommends
1-2 db for a setting, I see that the adjustment can be higher. What setting
are most CW operator using?
<unquote>
I measured the gain change going from 450 Hz to 400 HZ (where the rig
changes from the 2.8 filter to the 400 Hz filter) by turning the AGC off and
using WSJT v 4 signal power measurement function.
I got 6-7 dB less signal through the narrow filter .. it was very obvious to
my ear.
Anyway, I found the menu option for filter gain and put in 6 dB for the
narrow filter and 0 dB for the wider filter and now the transition across
the 450- to 400 Hz bandwidth is very seamless. I am happy.
The 2 dB number is bogus, in my opinion/experience.
Ken
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