[Elecraft] K144XV Frequency Error

[Bill Schwantes]

Hi Folks,

I need help.  I have an early K3 equipped with the K3EXREF Frequency Lock
Option, K144XV Two Meter Module and K144XV Reference Oscillator Phase Lock
Option.

Some time after installing the KSYN3A synthesizers I noticed that the 144
Mhz band has a 5.6 KHz frequency error.  Signals occurring on the 144.200
calling frequency appear at 144.1944.

Other bands do not display this frequency error.

These observations have been verified by a very precise RF signal
generator.

I verified that the 10 Mhz GPS reference is present and meets the Elecraft
amplitude requirements. The tech mode menu "ref cal" asterisk is present
and blinking, indicating that the radio is phase locked to the 10 Mhz
reference.

I went back through the installation manuals for the options mentioned and
did not find any error.  I'm concluding that I may have made an assembly
error when installing the KSYN3a.

Can some member of the Elecraft "brain trust" help me find and resolve this
problem please?

Thanks, Bill
W7QQ