[Boatanchors] [Heathkit] AT-1 manual info

[Rob Atkinson]

It's an undamped (a.k.a. moving vane or iron vane) meter.  A cheap
meter found in a few novice rigs like the T-50.  The meter flipping
around going bounce bounce bounce is part of the run of running one of
those rigs.  If it's actually smacking against a stop something's
wrong.  Too much plate current or the shunt is wrong or something.

73

Rob
K5UJ