[Elecraft] K2 # 3877 is ALIVE

[DAVE HEALY]

Thanks for the advise, Tom. =20

I got up last night and re-read some of the manual and the alignment =
procedures and your post confirms my thoughts.

I'm going to re-work the filter/bfo values this weekend then try =
Spectrogram after all is where it should be.

The great part of building the radio is you're not afraid to tweek and =
twiddle.  You know you you can recover.

Thanks again!

73, -dave- N7DKK, Medford, Oregon


Tom Hammond's reply:

>Only one small anomaly: When receiving a signal and different filters =
are=20
>selected, the signal changes frequency from .5 to 2 KHz. It must then =
be=20
>retuned.

A jump of this level almost always implies that one (or more) of the =
filter=20
settings are on the opposite side of the filter center. Recheck your =
filter=20
BFO values and reset as required. For any particular sideband ("Normal" =
or=20
"Reversed"), the BFO values should be either above or below filter =
center,=20
but they should not change sides within a sideband choice.

>Haven't done Spectrogram, yet. Will this correct the problem of the=20
>receive signal changing with a filter change? Or is there another=20
>alignment I should rework?

Spectrogram will help you to get the set, but it still won't tell you=20
whether they're set to the proper side. That you must determine yourself =
by=20
first locating filter center and then ensuring that you've moved the BFO =
to=20
the proper side of center before you use Gram to set things dead-on.

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