Hi Rich,
If this can be of any use to you, i have the schematic of WatchMan FD-240BE.
This is an Euro model. From a quick look, the tuning voltage is stabilized + 32VDC feeding Varicap diodes.
If interested, drop me a line with your Mail address via PM. The file is too big (220 Kb) for forum posting.
Best Regards
[email protected]
Paris/France
PS: for future maintenance purposes, i'm interested in any US small-screen (2"-3") WatchMan service data as i have a mixed batch of these animals.