Hello Micheal.?

I had a similar problem in 20m trying to get the drift stable.?

Before doing anything to the rig, I used to get awful drift. Really to the point of getting zero spots. -4 -3 were very common after leaving it alone for a long time yet it never stabilised.?

It was worse when I put the rig in the case as the thermal effect of the finals heating up caused the signal to drift. I could see it during a TX cycle just by watching my own received signal. Simply blowing on the crystal when in a TX cycle sent it west..!! It's very sensitive.?

Then after implementing park mode AND covering the crystal with a small foam block did I get considerably better results.?

If you haven't tried park mode as well yet then give it a go. But from what you've described the small brass heat sink is doing a sterling job.?

Following the instructions does work Hi Hi.?

73 James 2E0MUA.?

On 28 Oct 2017, at 03:06, Michael Lloyd <mikell@...> wrote: