[Elecraft] ERR PL1

[Brett Howard]

Did you get your radios before Dec 22nd of last year?

http://www.elecraft.com/K3/mods/ELECRAFT_Application_Note_KSYN3_ALC_Rev_A.pdf

~Brett (KC7OTG)



On Sun, 2009-07-05 at 13:38 +0200, Evert Bakker (PA2KW) wrote:
> Hello,
> 
>  
> 
> As temperature rises (in the shack), FP (34 degC) does,  and a problem
> popped up; ERR PL1.
> 
>  
> 
> I did check the PLL voltage. PLL1 = 7.5 (which seems to be the limit I
> guess), PLL2 = 3.5 (Sub-RX) at 28 Mc and FP 34 degC
> 
>  
> 
> When FP was 22 degC: PLL1 = 3.8 and PLL2 = 3.4.
> 
>  
> 
> After recalibration of the VCO, is gives E00272 / ERR VCO. 28Mc not useable
> anymore and an unstable PLL1 Voltage. Even 24 Mc needs about a second to
> give a go-ahead. 
> 
>  
> 
> I did open the K3 as to check connections of all the coaxial
> interconnection. No effect (after warming up again).
> 
>  
> 
> It looks like PLL1 is very unstable in relation to the FP temperature and
> PLL2 much less.
> 
>  
> 
> I do have a second K3 and see PLL1 at 7.3 on 28Mc (coming anxiously close to
> 7.5).
> 
>  
> 
> Anyone a clue where to look or what to do?
> 
>  
> 
> 73's, Evert PA2KW
> 
>  
> 
> 
> 
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