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Combination microphone, speaker, and control unit for a radio transceiver

  • US 4,032,844 A
  • Filed: 12/22/1975
  • Issued: 06/28/1977
  • Est. Priority Date: 01/07/1975
  • Status: Expired due to Term
First Claim
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1. A combination transducer and control unit adapted to be coupled by a multi-conductor cable to a separate radio transceiver chassis which is capable of transmitting and receiving a plurality of radio signals at preselected frequencies, comprising:

  • a housing of a size which is conveniently held by one hand;

    a multi-conductor cable secured to said housing and adapted to electrically connect said combination unit to said radio transceiver chassis;

    multi-position switch means mounted in said housing and connected to said cable, said switch means being operable to select individually said preselected frequencies;

    illuminated channel indicating means mounted on said housing and responsive to said switch means for indicating the frequency to which said transceiver is turned;

    an electromechanical transducer mounted in said housing and connected to said cable transmit/receive switch means mounted on said housing and coupled to said cable and said transducer for selectively enabling said transceiver to transmit or receive said radio signals; and

    volume control means mounted on said housing and coupled to said cable and said transducer for varying the amplitude of the audio frequency electrical signals produced by said transceiver;

    said frequency-selecting switch means, transmit/receive switch means, and volume control means each being located on said housing so as to be operable by the finger of the same hand of the operator which is holding the unit.

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