One word of caution on using "old amplifiers" (pre-WARC designs)
on 12 meters. Most old amplifiers used a plate RF choke with
a series resonance near 24-25 MHz. Operating one of these amps
on 12 meters is very likely to result in offensive smoke in the shack.
Recommended testing date for these onld amps is Independence Day,
you will enjoy the fireworks display!
73 John W0UN
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