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ERR PL1

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Evert Bakker (PA2KW)

ERR PL1

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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Brett Howard

Re: ERR PL1

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
>
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
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Please help support this email list: http://www.qsl.net/donate.html

Dr. Detlef Petrausch

Re: ERR PL1

In reply to this post by Evert Bakker (PA2KW)

Hi Evert,

I had the same problem and fixed it by instructions from Gary.
I wrote you off list, because I don't know if pdf-files are accepted by
the list.

73 Detlef, DL7NDF

Evert Bakker (PA2KW) schrieb: