[Elecraft] XG50 power on aging cycle

[Don Wilhelm]

Mike,

As the instructions indicate, you only have to do it once.
That is for initial aging of the crystal.

If you are getting only 1 Hz drift on 40 meters, note that the frequency 
stability spec for the KX3 is +/- 1 ppm for a temperature range of 0 to 
50 degC.  So you may not be able to do a lot better, much depends on the 
temperature range inside the enclosure.
If you are running it at more than 5 watts, you might do well to invest 
in an aftermarket heatsink.

73,
Don W3FPR

On 10/12/2019 3:52 PM, Mike Parkes wrote:
> Hello Elecraft !
> I want to run the KX3 Extended VFO Temperature Compensation procedure again
> as I still get +/- 1 drift on 40 meters wspr. The instructions say: "If
> using the Elecraft XG50 *for the first time*, an 8 hour power-on aging
> cycle is recommended but not required." I did this the first time I ran the
> procedure.
> 
> Q: Is the 8 hr warm up recommended *every* time you run the procedure? Or
> was that just once, for the new XG50?
>