Jack,
The peak on L34 is difficult to discern because it is quite broad. For
now, I suggest setting the slug 1 turn in from the top of the can.
After you have your K2 completed and the KSB2 board (if any) installed,
I suggest you do a full dial calibration and filter setup using
Spectrogram as I describe on my website
http://w3fpr.qrpradio.com.
When you have Spectrogram still displaying the K2 audio, you can turn on
the preamp, remove the antenna and tune to the 7000 kHz birdie and
adjust L34 - with Spectrogram you will be able to see the peak, often
the difference between the peak and off the peak is only a couple dB and
that difference is difficult to discern with your ears.
73,
Don W3FPR
Jack wrote:
> The K2 just passed all the second powered up tests (woohoo)
>
> One quick question though. I was not able to peak up L34 for max
> signal/min noise. The core hit the top of the can, I could have used
> another couple of turns. So maybe this is not peaked to optimum?
>
> I peaked L1 and L2 and heard a load of signals on 40m (double woohoo)
> but signals were not as strong as my aging Kenwood using the same
> antenna. Maybe due to L34?
>
> Anyone else have L34 issues?
>
> cheers
> Jack VK2CJC / MM0AXL
> FISTS #9666 - CW QRP Club #753 - Elecraft K2 #6404
> Mid North Coast Amateur Radio Group www.mncarg.org
>
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