[Elecraft] New Synth Question...

[Mark Bayern]

Check Elecraft's website for the latest mod. The frequency shift it
describes might be what you're observing. The good news? There is an
easy fix.

>From the application note:

"The K3EXREF option allows the K3 to be closely locked to an external
10-MHz reference. Some K3 owners reported a pe"riodic frequency jump
of up to 40 Hz on 2 meters (using the K3’s K144XV module with PLL lock
option) when the K3EXREF board was added. We found that the K3EXREF
was causing a shift in the 49.380-MHz reference oscillator frequency.
This can be fixed with a simple modification to the KREF3 module.

Mark  AD5SS




On Wed, Apr 22, 2015 at 2:47 PM, David Cole <dave at nk7z.net> wrote:
> Hello,
>
> I have the new SYNTHs installed, and all is working as it seems it
> should.  As soon as I installed the nnew Synthys, I saw a sawtooth
> waveform when looking at very small frequency corrections.  On the order
> of about 1/4 HZ. steps, then a correction, then another 1/4 HZ step,
> etc.
>
> If I were to get the frequency standard for the K3, will that reduce the
> step size?
>