FW: [Elecraft] K2 CW CAL FIL method

Wed Feb 20 13:32:07 2002

The important distinction here, is NOT TO ADJUST FL4. FL4 is so tight,
adjustments shift the passband too far from the cw offset. Adjust the other
3 to match 4. That was my point.

I'll try your suggestion on SSB Filters, after my eyes settle down. I've
been to the eye doctor (clean bill o health, yea), but was dialated. The
screen sure does quiver! I've got the WWV schedule format.

Dan

-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, February 20, 2002 9:02 AM
To: [email protected]
Subject: Re: [Elecraft] K2 CW CAL FIL method

In a message dated 2/20/2002 7:28:33 AM Central Standard Time,
[email protected] writes:

Would something like this work for SSB? I don't even know how to zero-beat
an SSB signal. I guess you have to know what the OM or YL is supposed to
sound like, and then twist the knob until s/he sounds right? Hummmm.

++++++++++++++++++++++++++++++++++++++++++

Hi

Your CW filter setting is similar to the method I use except I use the 7.000
MHz birdie after I center the filters with Spectrogram.

Set a Spectrogram marker at your sidetone frequency. Center the bandpass for
each filter on that marker for CWn and CWr. Now with the antenna disconnect
find the internal birdie at around 7.000 MHz. Go out of menu to normal and
adjust the VFO so the birdie on the Spectrogram display is on top of the
marker. Now without touching the VFO go into cal filter and make a small
adjustment to each filter so the birdie is on top of the marker for each
filter in CWn and CWr. When all is set up properly you can zero beat a CW
signal and switch between filters or CWn or CWr with no change in tone.

For SSB you can use the audio tones on WWV at 10.000 MHz. The tones are 500
and 600 Hz on alternating minutes with a 1000 Hz tone on the minute. Check
the WWV website for the format.

Don Brown
KD5NDB

K2 #1808 all options
K2 #2174 SSB NB AF
K2 #2468 SSB NB AF, ==FOR SALE==
K1 #542 all options

K2 #2153 sold
K1 #1000 sold

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