[K3] [Elecraft] FLx GN Adding Db gain
David Wilburn
dave.wilburn at verizon.net
Wed Nov 12 10:09:50 EST 2008
Could the built in two tone generator be used as an input for this?
Now to download the latest manual and read about the "audio voltmeter"
I did not realize it had. ;)
David Wilburn
NM4M
Craig D. Smith wrote:
> I have the full range of filters, from 13 KHz to 200 Hz and found that there
> isn't enough adjustment range to get them all exactly equalized. That is,
> with the 2.7 KHz set to 0 (minimum possible) and the 200 Hz set to +8dB
> (maximum possible) the 200 Hz was still 2 dB down from the 2.7KHz. So what
> I did was to equalize the three filters that I use for CW (my primary mode
> of operation) at one value and equalize the 13KHz and 2.7KHz filters at
> another value (used for MW, SW listening, etc). This seems to work out
> quite well in practice. Here is what I ended up with. The first column is
> the variation in dB with the AGC off. The second is with the AGC on. I
> used a signal generator and the K3 built-in audio voltmeter for the
> measurement.
>
> Filter w/o AGC w AGC
> 13 K -0.5 -0.1
> 2.7 K 0 0
> 1.0 K -2.1 -0.4
> 500 H -1.5 -0.3
> 200 H -2.0 -0.4
>
> 73
> ... Craig AC0DS
>
>
>
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