Circuit for disabling a radio transmitter which is continuously

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

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325111, 340250, H04B 104

Patent

active

040342972

ABSTRACT:
A timer and fuse circuit are provided with a radio transmitter for blowing the fuse if the transmitter is continuously operated longer than a predetermined time. After the fuse is blown, the transmitter cannot be operated until a technician replaces the fuse. This prevents operators from causing willful interference for long periods of time, and provides means for detecting those operators who cause such interference.

REFERENCES:
patent: 3469191 (1969-09-01), Russell, Jr. et al.
patent: 3500458 (1970-03-01), Cannalte
patent: 3500459 (1970-03-01), Battin et al.
patent: 3737887 (1973-06-01), Wakamatsu et al.
patent: 3745546 (1973-07-01), Struger

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