Land mobile telephone system

Details Land mobile telephone system Land mobile telephone system

1985-09-27

1987-03-03

Lev, Robert G.

Telephonic communications

Audio message storage, retrieval, or synthesis

455 88, 455 89, 379388, H04M 123

Patent

active

046477225

ABSTRACT:
The present invention relates to a land mobile telephone system with enhanced operability realizing both the loud-speech and closed-speech operations by the single handset. The handset is installed detachably in a pad of a steering wheel of an automobile and having a power terminal for feeding electric power from an automobile-equipped battery to said handset devices when said handset is seated in the steering wheel pad, said controller having a speed mode selector which selects a loud-speech mode when said handset is seated in the steering wheel pad or selects a closed-speech mode when said handset is taken out of the steering wheel pad.

REFERENCES:
patent: 4307266 (1981-12-01), Messina
patent: 4455454 (1984-06-01), Umebayashi
K. Kobayashi et al, "Detachable Mobile Radio Units for the 800 Hz Land Mobile Radio System" IEEE Vehicular Technology Conference, May 1984, pp. 6-11.

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