[Elecraft] K2 problem with 4 MHZ calibration

Mike Scott mike at paxsen.com
Sat Oct 6 22:47:55 EDT 2007


K2 Problem (serial No. 4159)

Hello dear builders...I have a problem.
At the 4 Mhz Oscillator calibration a problem occurred:

First the counter did not show 12090 +/- 30 KHz but: ~ 8.9 MHz

I checked the board and discovered that I had made a mistake with D16; then
I soldered D16 in the correct way and the measurement now is around 7,5 MHz
(with built-in frequency counter)

- verified all components and their polarity, all seems ok (yes - X1 is the
12,09 MHz oscillator)

I verified the frequency of the oscillator with the help of my FT-1000MP and
yes, around 7.562 KHZ you can hear the oscillation...

by the way: the VCO Test is OK

a friend who has successfully built a K2 thinks perhaps the 12.09 MHz
oscillator is faulty...

what do you think...so far the building was fun and successful...but now i
do not know what to do..

THANK YOU VERY MUCH for your help

Very 73 de Markus, DL9RCF

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