[Premium-Rx] WJ and Spook History

[joe jesson]

  During Vietnam, wireless motion sensors disguised as twigs (or turds :) and these were dropped along the trails to telemetry troop movement via a UHF frequency.  A tiny pin was pulled which allowed the internal mercury battery to make connection and to start transmitting.   I had purchased a pack of these from FAIR Radio sales my wife threw them out :-(   No longer available at Fair.  Anyone have one or two laying around they want to sell or trade for a WJ fixed-channel receiver?  I am doing an article on the history of telemetry/M2M technology.

Thanks   
  Joe Jesson


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