Oops, got a little too fast on the keyboard:

http://home.comcast.net/~fairbank56/ocxo.html

"Eric Fairbank" wrote in message
. ..
I'll save you the trouble. I just threw together a web page with three
images from the service manual. I have one as I have done repairs and
adjustments to several of these radios. It's my job as a marine
electronics tech.

The first pic is the block diagram of the PLL circuit, the next one is
from the main block diagram that shows the reference oscillator (OCXO)
that clearly shows the HV supply feeding the resistive element of the
OCXO, and the third one shows the schematic portion with the OCXO in it.

Eric

"Larry" wrote in message
...
Now you've got my curiosity up. I've emailed Icom to find out and try to
wheedle an M802 schematic out of them I used to get free with ham
equipment.