In article ,
"Lynn Coffelt" wrote:

There were some strange diodes in the klystron tune regulated voltage source
that were no longer available (this in about maybe 1978). Dumb thing would
drift out of front panel tuning range periodically. Could bring it right
back with chassis pot, of course, but owner frowned on that and I never did
get paid! Don't blame him a bit.

The KRA124/248/448 didn't have a Klystron for an LO, but was the first
of the Second Generation Radars, and used an XBand Gun Diode Osc. As
I recall Furuno last used a 2K25 Klystron in the KRA 121 Series Radars
which was before Northen picked up the Furuno Dealership. Don
Hollingsworth Sr. at G & L Marine was the KRA-121 expert and has always
been the "Go To Guy" for Marine Radar Technical Information, even when
he was the Raytheon Marine Tech (Ray 1500/1700/1900) for the NorthWest,
and worked for U.G. Allen.

Man that does date me, in the North Pacific Marine Electronic Community.

Bruce in alaska
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add a 2 before @