Mark,
The setting of C22 does not control the frequency readout directly. The
frequency readout uses the contents of the EEPROM that are produced when
you do the CAL PLL and CAL FIL procedures.
The only time C22 must be set correctly is just before you do a CAL PLL
or a CAL FIL. At other times it is just a clock for the MCU and does
not need to be accurate.
I suggest you read the K2 Dial Calibration article on my website
www.w3fpr.com and proceed according to those instructions.
73,
Don W3FPR
On 9/18/2018 9:27 PM, AE0MM via Elecraft wrote:
Just completed assembly of my K2. The VFO display reads about 1.5KHz high. I've
attempted several times to calibrate it by adjusting C22, but I'm not able to
get the frequency of TP1 on the 30m band any lower than ~14.9154MHz (while the
vfo set to zero beat with a 10MHz signal) without it causing the radio to stop
responding.
When c22 is adjusted to a point where it lowers the frequency of TP1 below
14.915, the display freezes and it stops responding to button presses. If the
power is cycled, no relays click and the display has no indication of life.
When c22 is returned to the previous setting, the radio becomes responsive.
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