Two-way radio for use in a communication system

Details Two-way radio for use in a communication system Two-way radio for use in a communication system

1989-01-06

1990-12-18

Olms, Douglas W.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 78, 455221, H04B 144, H04B 726

Patent

active

049792318

ABSTRACT:
A two-way radio includes a receiver having a squelch circuit and a selective calling decoder. A transmitter is connected to an inhibit circuit. The inhibit circuit is responsive to the selective calling decoder for permitting transmission after reception of the radio's ID code. The inhibit circuit inhibits further transmissions if the squelch circuit indicates loss of carrier for more than a predetermined time during receive.

REFERENCES:
patent: 3745462 (1973-07-01), Trimble
patent: 4317218 (1982-02-01), Perry
patent: 4376310 (1983-03-01), Stackhouse et al.
patent: 4494244 (1985-01-01), Arndt et al.
patent: 4501617 (1985-02-01), Higgins et al.
patent: 4517561 (1985-05-01), Burke et al.
patent: 4549309 (1985-10-01), Corrigan
patent: 4553263 (1985-11-01), Smith et al.
patent: 4807222 (1989-02-01), Amitay
"EXPO" Series, Handie-Talkie, Portable Radios, Service Manual 68081052C25-O.
Motorola "EXPO" Series, Service Manual 68P81052C25-O Printed 11/87.

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