[Elecraft] K2 Frequency problem

[Ron D'Eau Claire]

Ed, N5GF wrote:
"Also noted:  The CAL PLL function will not run on any band other than =
the 7
Mhz band.  It gives a 232 error on all other bands including 10 Mhz, =
which
means it doesn't see the reference oscillator on TP1.  Is this normal?  =
I
can't find anything about it in the book, but maybe I'm just overlooking
it."

That is correct. CAL PLL is ONLY run on 40 meters.=20

"I have gone through the 4 mhz oscillator calibration procedure several
times and it appears to be correct but the readout remains low. "

Have you tried checking your 4 MHz oscillator directly? If you can tune =
in
WWV at 20 MHz you should be able to hear the 5th harmonic of the 4MHz
oscillator on that frequency as well. You might need to arrange an =
antenna
wire near the crystal. If you aren't sure what you are hearing, tough =
C22
with your finger. That'll make the 4 MHz frequency shift as long as you =
are
touching it.=20

Also, don't forget that you must run CAL PLL and CAL FIL after each
adjustment of C22 for the changes to take effect. Running CAL FIL, you =
must
manually change the BFO frequency for each filter position, and then put =
it
back, to make the firmware re-read the frequencies and store the new =
data in
memory.=20

Ron AC7AC
K2 # 1289