[Elecraft] K2 14 crystal replacement results. K2 system gain results

[Mike McCoy]

Ron said:


> Like Larry, W2BVH, I found it hard to judge the OPT-1 filter performance
> by looking at Spectrogram, but the difference in the "sound" of the
> filter when monitoring my own SSB transmission was tremendous!
>
> Keep in mind that the problem is NOT "bad crystals" in general, but SOME
> kits with SOME "bad crystals" that produce filters with either too much
> insertion loss or too narrow of a bandwidth for SSB. So even with kits
> with adjacent serial numbers, one may see a big improvement and the next
> one will see none at all.
>
> Mine had no insertion loss problems, but my OPT 1 filter was way too
> narrow for decent SSB quality. I had to change all of the crystals, of
> course, so I'd have a "matched set" after putting in the new ones for
> the OPT-1 filter.
>
> Ron AC7AC
> K2 # 1289

I had *exactly* the same issue/results here. I guess I was a victim of the
odds and my previous xtals (-0195's) made my SSB xmit audio 'pinched' &/or
thin sounding and thus too bad to even bother. Since I replaced the xtals
(right after the surprise that I'm only running 10w) I've had a couple QSO's
in the last day or so *volunteer* how good the audio sounded!

I am ONE HAPPY CAMPER!

Mike - K5PU
K2 # 2602
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