[Elecraft] K3 REF*CAL issue - Resolved

[Gary Smith]

I do not know why it was working a few 
days back and not working now but I found 
the answer revealed on this web page: 

http://elecraft.365791.n2.nabble.com/K3EXR
EF-What-am-I-doing-wrong-td7614721.html

It is stated in an addendum that when in 
REF CAL & you have the external 10 MHz 
source connected, you have to press 2 on 
the keypad to enable XREF IN. 

By doing so the asterisk started in about 
10 seconds and all is well, the radio is 
again properly maintaining the frequency. 
No idea what made this function stop but 
this is what it took to start it again.

73,

Gary
KA1J


> I have the K3EXREF installed in this K3. I 
> noticed when I clicked on a signal with 
> the P3 & marker, the signal was off a tad 
> from where it should be. On a hunch I 
> checked REF CAL and the asterisk was 
> missing. I know REF CAL had the flashing 
> asterisk a few days ago.
> 
> I measured the signal coming from the 
> GPSDO and it was 10.000 0 MHz according to 
> the MFJ analyzer. I had recently put in 
> filters in the K3, a KXV3B and a KIO3B and 
> thought I might have dislodged a coax in 
> the K3 so I assured the integrity of all 
> the coax cables (I have the new synth 
> board). I also assured the K3EXREF was 
> seated properly and there were no obvious 
> loose components. I cannot get the 
> asterisk to flash and the board to lock 
> with the 10 MHz signal.
> 
> I had to manually calibrate to WWV and it 
> was quite off.Does anyone have a 
> suggestion for me to try and get this to 
> sync? I re-read the K3EXREF  installation 
> instructions and the board is nicely in 
> place, reloading known good configurations 
> with the K3 utility made no change. 
> 
> Either I borked a setting somewhere in 
> config or I have a failed component.
> 
> Anyone have this issue before & found a 
> resolution?
> 
> Thanks.
> 
> 73,
> 
> Gary
> KA1J
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