[Elecraft] K2 PLL Range

[W3FPR - Don Wilhelm]

John,

It is likely that you will find your problem on the thermistor board.  Look 
VERY carefully at the soldering, then look again, and then once more.  It 
appears that the PLL is trying to work, but there is a bad connection 
somewhere - most likely the thermistor board.  There could be a bad solder 
connection anywhere in the PLL area too (R19 and RP2 for example) - double 
and triple check them all.

Don't draw any other conclusions (including the range) until you have the 
PLL readings settled down.

73,
Don W3FPR

----- Original Message ----- 

I am slowly building a K2 and have run into a problem:

PLL Reference Oscillator Range Test (page 57 of manual).
The 4 MHz osc has been calibrated to an external counter with known accurate 
reference.
In CAL FCTR the counter reads 12099.15 MHZ
Tap BAND+ there is no change to this reading.
Tap BAND- the reading briefly changes to 12079.?? (too fleeting to read 
decimals) and instantly reverts to 12099.15.

Are there 2 problems here?  a) the reading at BAND- should presumably remain 
steady.  b) The range, if 12079 is correct is way outside the specified 
9.5-15kHz.