[Hallicrafters] HT-32 WHAT IF THING

[Charlie]

Hey, don't laugh.  I remember a signal generator that had a device in it
they
called a "Wobulator" for Frequency Modulation.  Basically it was a voice
coil and magnet that drove an aluminum plate which was part of the L-C
circuit for the RF oscillator.  An audio output stage drove it and you
simply turned up the "volume" to get more deviation!

73' Charlie k3ICH

----- Original Message ----- 
From: <k0ewu at juno.com>
To: <Hallicrafters at mailman.qth.net>
Sent: Tuesday, 14 December 2004 7:52 AM
Subject: [Hallicrafters] HT-32 WHAT IF THING


>         This should be an April Fool thing?
> As we know the 7360 is very sensitive to external magnetic fields the
> normal shield
> is of a magnetic shield such as "conetic"
> So if we wanted am from the -32 why not use the voice coil from an old
> speaker placed around the tube.
> Then using a small audio amp with a microphone feeding the "voice coil"
> now known as a magnetic modulator, to alter the magnetic field at an
> audio rate.
> This should result in carrier injection detectable in a receiver as am?
> old   jack
>
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