Portable radio communication equipment

Details Portable radio communication equipment Portable radio communication equipment

1991-08-21

1994-02-15

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455 90, 455 95, 455127, 455128, 455343, 455348, 379433, 379434, H04B 138

Patent

active

052875547

ABSTRACT:
In a portable radio equipment, a first power unit (11) and a second power unit (15) can be selectively mounted to or removed from a radio equipment main unit (1). The main unit contains a transmit audio circuit (3), a first microphone (4), and a power circuit (5). When the first power unit is mounted to the main unit, a short-circuiting member (12) in it connects the first microphone to the transmit audio circuit, and a power source (8A) in it provides power to the power circuit. When the second power unit (15) is mounted to the main unit (1), a second microphone (16) in it is connected to the transmit audio circuit to the main unit, and a power source (8B) provides power to the power circuit.

REFERENCES:
patent: 4578628 (1986-03-01), Siwiak
Mitsubishi Model 3000, copyright Jan. 1, 1991.

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