[Milsurplus] Mechanical Modulator

[James Duffer]

Or maybe a motor driven goniometer into some sort of hybrid RF bridge?

Jim

> From: wb6blv at inreach.com
> To: Milsurplus at mailman.qth.net
> Date: Sat, 13 Sep 2008 12:39:43 -0700
> CC: 
> Subject: [Milsurplus] Mechanical Modulator
> 
> I suspect the reference is to the 'Wobbulator" (spelling??) used on the
> APN-1 (I think) radio altimeter... the device is actually a voicecoil-driven
> variable capacitor with a fairly strong permanent magnet...  I have some
> here I picked up years ago at a surplus store in LA and I have had fun
> playing with them from time to time... they give fair audio FM and they make
> interesting sweep generator elements...
> 
> John
> WB6BLV at inreach.com
> 
> 
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