[ARC5] hiroshima A bomb

[jmfranke]

The wobulator was used in the CW FM APN-1 radio altimeter.  I have a Soviet 
copy of the system complete with wobulator.  The bombs used the pulse 
modulated APS-13 "Tai end Charlie" system.

John  WA4WDL

--------------------------------------------------
From: <MillerKE6F at aol.com>
Sent: Friday, April 09, 2010 3:16 PM
To: <arc5 at mailman.qth.net>
Subject: Re: [ARC5] hiroshima A bomb

> I believe it was one of the radio altimeter units that showed up on the
> surplus market in the late 40s to early 50s.  The prized part in the unit 
> was
> the "Wobulator" which was a nifty little split stator capacitor deposited
> on  a bowl shaped ceramic that was attached to a PM speaker scheme that 
> that
> formed  the moving (pseudo rotor) part of the capacitor.  They formed the 
> FM
> part  of the altimeter transmitter.  Can't recall the nomenclature, but
> they were  cheap items at Standard Surplus on San Francisco's Market 
> Street.
> Usually less than 5 bucks with dynamotor, wobulator and toooobs.
>
>    Bob, KE6F
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