Hello, I just got my first FT-847 a week ago. I notice the discriminator always pulls to the left even with no signal. I did adjust the ref osc as it was off freq a bit.
Looks to be about 900hz off. I looked through the service manual briefly but didn't see a way to center it. Thanks? K9CZ

I had the same problem. I had to go into the service menu and adjust the DISC-L and DISC-H settings. Look in the files section.

Max

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Thanks, that did the trick changed L 26-28 and H 33-36. Rig if on freq adjusted it on UHF with my IFR-1200S so within about 10hz. The variable not the best. Think I will put in a TCXO next.

I installed one of these on X1001 crystal



Works quite well.

Max

Max,
Yes, I was looking at one of those Kuhne electronic QH40A Cyrstal heaters something like you have. I was worried about the trimmer also being a problem,? so thought kill 2 birds with one stone on the TCXO. Sure I will do one or the other, I can get a TCXO for $12 total so that would be the cheapest route.