The ‘phones in question are particularly interesting, as they turned out upon inspection to be a two-way radio in disguise ... There is a ferrite rod antenna and a variable capacitor, if ...

They're bulkier than your average 2-way radio, and when connected to an external antenna attached to a home or vehicle, can offer a range of 3 to 20 miles, according to Moonraker. That range can ...

1. CAR A two-way radio transponder with a unique identification number is installed on the bottom of each car, 36 inches from the tip of the nose cone. 2. TRACK Multiple detection loop antennas buried ...