[Boatanchors] [Heathkit] AT-1 manual info

[hwhall at compuserve.com]

 I have determined that it is not a moving iron vane meter design. It's a moving magnet design first patented in the 1940s. It's also undamped so it bounces like undamped moving iron meters (some of which are damped, however).

 

 Wayne
WB4OGM


-----Original Message-----
From: Rob Atkinson <ranchorobbo at gmail.com>
To: Boat Anchors List <boatanchors at mailman.qth.net>
Sent: Wed, Sep 14, 2016 3:53 am
Subject: Re: [Boatanchors] [Heathkit] AT-1 manual info

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
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