K2 VFO Linearization fails

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K2 VFO Linearization fails

rrkrr-2
K2 #3766, a kit I bought a few years ago and let sit on the shelf for a
while - I'm finally threatening to finish it.

All has gone well up to the "VFO Linearization" step in Alignment where
the CAL PLL menu item is supposed to be run.  I've followed the
instructions to the letter, but when I go through the menu, select CAL
PLL and hold the "EDIT" key to start the linearization sequence....
nothing.  A 12099 kHz frequency is displayed, but does not change.  
There are no "d"s displayed to indicate stored data points.  Nothing
happens.

MCM firmware is 2.03.  IOC firmware is 1.07

I would appreciate any suggestions.

Bob
K4ERR
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Re: K2 VFO Linearization fails

Don Wilhelm-4
Bob,

Have you first checked the PLL range?  With the probe in TP3 (you may
have to remove the KDSP2 or KAFT2), and menu in CAL FCTR - what is the
frequency when you tap the BAND+ button?  What frequency when you tap
the BAND- button?

If you have a good PLL range, then the frequency should decrement during
CAL PLL.  You say it does not, and I believe that, but start with the
PLL range frequencies and then we can hone in on the problem spot.

73,
Don W3FPR

rrkrr wrote:

> K2 #3766, a kit I bought a few years ago and let sit on the shelf for
> a while - I'm finally threatening to finish it.
>
> All has gone well up to the "VFO Linearization" step in Alignment
> where the CAL PLL menu item is supposed to be run.  I've followed the
> instructions to the letter, but when I go through the menu, select CAL
> PLL and hold the "EDIT" key to start the linearization sequence....
> nothing.  A 12099 kHz frequency is displayed, but does not change.  
> There are no "d"s displayed to indicate stored data points.  Nothing
> happens.
> MCM firmware is 2.03.  IOC firmware is 1.07
>
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