Dear all,
I ran through the K2 filter aligment considering all your tipps and
tricks. I also adjuest the reference oscillator
on the control board again. My filter bandwidths are 1.5 kHz, 700 Hz,
500 Hz and 200 Hz (Filter FL1 to FL4).
I have used Spectrogram to align the filters. The settings
Martin:
The Elecraft K2 CW filters are a bit unusual in that, as you 'narrow' the
passband, only one side of the xtal passband moves much. Thus, as you
narrow the passband, the center freq will shift inward a bit with each
narrowing of the passband.
Take a look at the illustration of the
Dear KW2 CW operators,
yesterday evening I was running into a problem during CW operation with
the K2. I called
CQ using the 1.5 KHz CW filter on 20m and got response from a couple of
US stations.
The signals have been quite weak ( RST 33 ), but I have managed to copy
a call sign and
to give
Hello Martin:
yesterday evening I was running into a problem during CW operation with
the K2. I called CQ using the 1.5 KHz CW filter on 20m and got response
from a couple of US stations.
The signals have been quite weak ( RST 33 ), but I have managed to copy
a call sign and to give answer.
Dear Martin,
If your narrow filters are aligned using the Spectrogram software so
that they are all centered on your cw tone (say 600 Hz), then all you
need is to zero beat the signal while in the 1.5 kHz filter, and then it
will stay centered even at 100 Hz. The instructions for finding and
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