Does any one know about a LK-800A by Amp Supply. It has 3 forced air
cooled 800 watt plate dissipation, ceramic tubes, I think. It has some
sort of a delay circuit to keep idiots from applying drive before the
heaters or up to temp. This circuit has failed and now it doesn't ever
allow keying. On the only schematic we have, there are no details about
the timer delay circuit. It has a 555 timer and some other relays on a
small circuit board. I'm hoping some one here has the needed info, else
I have to reverse engineer the thing and will probably disable the
stupid timer.
John, WA5BXO
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