[Elecraft] RE: K2: DSP for CW ? - Curious

[Steven Pituch]

Hi Chuck,
I was a bit skeptical also about purchasing the K2DSP,  It seemed that when
using the MFJ DSP with my TS850 (pre-K2), I was never able to hear more with
the MJF DSP than without it.  I ended up selving the MFJ DSP.  However, I
never really liked the 270 Hz crystal filter on the TS850 as I always had to
tune off of zero beat to hear better.

Anyway I finally bought the K2DSP and it is excellent.  You can crank in
some audio amplification at the narrower band widths and it really makes the
listening easier as the signals will pop out of the noise.  In cases where
there is no agc pumping the K2DSP is probably better than the IF filter.
But to crank in both filters is very nice.  Two weeks ago in the foxhunt I
had the IF at 200 Hz and the DSP at 100 Hz and I swear it kept me from going
insane.  In fact I got both foxes at that setting. ;8)  I don't use the
denoiser at narrow CW bandwidths, but I am still experimenting with it.

Its funny, a friend who is now into QRP has an ICOM 703.  He says he can't
operate cw because he doesn't have a crystal filter.  I asked why he wasn't
using the dsp.  He said he was but it wasn't very effective.  I checked out
his radio and the manual and it seems that the 703 dsp only does noise
reduction.  It does not do narrow bandpass at all.  He was using the noise
reduction to make the cw more readable.  It wasn't working out too well.
Makes me appreciate the K2-K2DSP.

Regards,
Steve, W2MY/5

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