[Elecraft] K2 PLL Reference Oscillator help

Jess Gypin jessmx5 at earthlink.net
Mon Aug 15 23:00:58 EDT 2005


	I am at the point where I am testing the PLL reference oscillator. To the
best of my ability, I have verified the components, values, assembly and
solder connections.

When I put the K2 in freq counter mode, the PLL freq is not correct. Pushing
the band + displays about 1620-1640 and jumpy. On band -, it displays around
1030-1050 and jumpy. Rotating the tuning knob displays about the same
symptoms. I am thinking that either the varacter or crystal may be bad. I
know that it is not the cal fctr function or probe as the rest of the freq
displays are stable and the correct values.

Any help or tips would be appreciated. I am going to call Elecraft tomorrow,
but thought that there may be some of the great help here that there always
is.

As another question, what problems is the new thermistor mod really correct
and do you think that this may or may not be contributing to the problems?
Again, all of the values are correct and construction appears to be correct.

Jess AE0CW <><




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