K2 #6815 - VFO Linearization CAL PLL Info 232

[Gary W. Marklund]

Subject line says it. Everything has gone perfectly until I hit this.
Manual says I'm probably not on 40 M. VFO says 7030.00. Only
non-standard part of build is that I'm using the UnMods kit for all
options as well as their Internal Microphone Adaptor. All measurements
have been amazingly spot on.

Any ideas?

Thanks,

Gary KJ7RT

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[Don Wilhelm-4]

Gary,

Since you are using the Rework Eliminators, did you add the Rework
eliminator for the K60XV and add D19 and D20 as well as change the value
of C73? from 82 pF to 120 pF?  If so, you must follow the instruction to
set the secondary menu parameter for D19 to "y".  Failure to do that
will result in an incorrect VFO frequency on 40 meters, with a resulting
failure for CAL PLL.  All that is despite the fact that the displayed
frequency says it is on the 40 meter band - it actually is not.

73,
Don W3FPR


Gary W. Marklund wrote:
> Subject line says it. Everything has gone perfectly until I hit this.
> Manual says I'm probably not on 40 M. VFO says 7030.00. Only
> non-standard part of build is that I'm using the UnMods kit for all
> options as well as their Internal Microphone Adaptor. All measurements
> have been amazingly spot on.
>
>  
>
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[Gary W. Marklund]

Don,

Yes, I did all that. Just checked it. My instructions say it is C71 not
C73 that is changed. Other than that, all is as you say.

Gary

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[Don Wilhelm-4]

Gary,

OK, it may be C71 - my memory is not perfect and I don't have access to
the schematics here while on vacation.
Plug the internal counter probe into TP1 and check the frequency with
CAL FCTR.  If you are tuned to 7100 kHz, the counter should read close
to 12015 kHz.

You might also want to re-check the PLL Reference oscillator range
(probe in TP3).

73,
Don W3FPR

Gary W. Marklund wrote:
> Don,
>
> Yes, I did all that. Just checked it. My instructions say it is C71 not
> C73 that is changed. Other than that, all is as you say.
>
> Gary
>  

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[Gary W. Marklund]

Don,

Well, with egg on face ...

When I went to try your last suggestion, the K2 gave me a low battery
indication and would go no further. I did a short recharge and the CAL
PLL procedure is running as expected.

Sorry to have bothered you with this, but thanks for your help.

Gary

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