Dual communication headset

Details Dual communication headset Dual communication headset

1984-11-23

1986-11-04

Ng, Jin F.

Telecommunications

Transmitter and receiver at same station

Convertible

455 88, 455 89, 370 32, H04B 138

Patent

active

046213724

ABSTRACT:
A headset for communication with both FM and AM circuit signals comprising a first earphone for receiving only FM signals and a second earphone for receiving only AM signals and first and second switches associated with the headset and coupled to the FM and AM circuits for selectively transmitting a response to either of the received signals on a corresponding one of the FM and AM circuits.

REFERENCES:
patent: 2094002 (1937-09-01), Florez
patent: 2694140 (1954-11-01), Gilman et al.
patent: 3504120 (1970-03-01), Levitt
patent: 3512088 (1970-05-01), Ross
patent: 3588701 (1968-09-01), Kahn
patent: 3745467 (1973-07-01), Lundquist et al.
patent: 3885216 (1975-07-01), Kahn
patent: 4077007 (1978-02-01), McKinney
patent: 4088849 (1978-05-01), Usami et al.
patent: 4155040 (1979-05-01), Harmon et al.
patent: 4245136 (1981-01-01), Krauel, Jr.
patent: 4524461 (1985-06-01), Kostanty et al.

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