[Elecraft] PLL reference oscillator - Range of 9.1 kHz or more OK

Eric Swartz WA6HHQ - Elecraft [email protected]
Thu Feb 27 18:11:01 2003


Hi Brendan,

As Wayne noted in his email, a PLL reference oscillator range of 9.1 kHz or 
more is sufficient, so you are OK. The manual is a bit too conservative and 
will be updated.

Noticeable jumps in PLL tuning every 5 kHz usually indicate that you need to 
rerun CAL PLL with the K2 in its final configuration (with the top and bottom 
cover ON.)

If you ran it with either cover off there will be a slight change in PLL 
calibration due to the proximity of the bottom cover and top cover + speaker 
magnet to the PLL circuitry.

73, Eric  WA6HHQ
Elecraft
------

Brendan Minish wrote:

> My PLL only covers 12091.08 Khz to 12100.64 Khz (a Range of a little 
> over 9.5 Khz ) During normal Dial tuning the following range is used
> 12095.02 to 12100.08
> 
> there is no 'gaps' in the tuning range and other than the glitch when 
> crossing 5 Khz boundaries there are no other problems at the boundary 
> points such as pitch jumps etc.
> 
> Am I ok with this range or should I put back the other xtal ?
> 
> 73
> Brendan EI6IZ