Re: FLx GN Adding Db gain

Posted by Ken_ke2n on Nov 11, 2008; 3:22pm
URL: http://elecraft.85.s1.nabble.com/FLx-GN-Adding-Db-gain-tp1330201p1485455.html


<quote author="wa6riv">
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