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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