[Milsurplus] mechanical modulator

[Glenn Little WB4UIV]

The mechanical modulator is probably a wobulator. This would be a 
variable capacitor or inductor driven by a mechanical device. Such as 
a motor with an eccentric wheel driving the voice coil of a speaker. 
The output of the moving voice coil would be determined by the motor 
speed and set to either 90 or 150 Hz.

73
Glenn
WB4UIV



At 03:15 PM 9/13/2008, Marty Reynolds wrote:


>Clete, you're gonna know this
>
>The 2/42 Radio News defense edition says the localizer has 90 & 150 hz fm
>a mechanical modulator
>
>Is that a deal that switches back 'n forth between dummy load & antenna at
>those rates?
>
>   Tnx!
>
>      Marty
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