[Elecraft] K144XV Frequency Error

[Bill Frantz]

I just installed a 2nd receiver and the 2M ref lock. The KRX3A 
installation manual, which uses the new synths shows J4 of the 
new style main synth connected to REF IN on the 2M transverter.

The ref lock installation manual shows J83 of the old style 
synth connected to REF IN and REF OUT connected to J2 on the 
KREF3 board.

Absent advice from someone at Elecraft who knows, I would use J4 
with the new synths and the J83 with a jumper to the KREF3 board 
with the old synths.

73 Bill AE6JV

On 9/18/15 at 3:51 PM, bill4070 at gmail.com (Bill Schwantes) wrote:

>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
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