[Elecraft] Stability of the K2 & XV144 Transverter

[Ron D'Eau Claire]

Hi, Ken:

The only thing about the K2 that comes to mind depends upon the age of your
K2. If it's fairly recent (S/N 3446 or later) it's as stable as it can be.
However, if you have an older one, there are two important mods to make it
more stable. One mod improves the BFO stability and the other mod improves
the local oscillator phase locked loop reference oscillator stability.

These mods are especially important for stability on the higher HF bands
such as 10 meters because  on those bands the drift characteristics of the
BFO and PLL reference oscillator were such that they added to increase the
drift. This issue wasn't noticed for a long time in part because the drift
characteristics tended to cancel each other out on the lower bands, due to
the way the mixing scheme works in the K2. The circuit changes were made
standard in K2's after S/N 3446, so if you have a newer one, the improved
circuits are already built in.

If you have an older one, you can purchase upgrade kits from Elecraft.

Ron AC7AC

-----Original Message-----
Hi to all from a new member to the list. I just ordered a K2 kit plus the
add-ons and an XV50 and an XV144.

I am very interested in weak signal working on VHF and to that end have also
ordered the XVOVN crystal oven for the XV144. Assuming that this makes the
transverter very stable, can I just ask if any other actions need to be
taken to the K2 itself, or is the rig fine at 28Mhz which is where I will be
transverting from?

Any info most welcome.

73,

Ken.