Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1985-04-19
1989-12-05
Ng, Jin F.
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455 89, 455100, 455351, 381169, 381187, H04B 715, H04B 138
Patent
active
048857963
ABSTRACT:
Included in the communication apparatus are a face mask covering the eyes, the nose, and mouth of the user and which has a frame holding a transparent viewing shield with a peripheral resilient seal on the frame bearing against the user's face. A relatively low power transmitter is positioned inside the mask adjacent to the air inlet for transmitting a short range signal carrying a communication from the user. A relatively high powered transceiver is carried on the user's person. The communication apparatus also includes a receiver also carried on the user's person tuned to receive the signal of the low powered transmitter and providing an audio output. A voice actuated switch is responsive to the output of the receiver to switch the transceiver from its receiving mode to its transmitting mode. A cable interconnects the voice actuated switch and the transceiver to switch the transceiver between its modes and to supply the output of the receiver as the audio input to the transceiver, so that the user is enabled to communicate with remote receivers tuned to the frequency of the transceiver without comprising the integrity of the face mask shield or interrupting the seal about the periphery of the face mask.
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Loftus Daniel L.
Shelley David L.
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