Hand-held transmitter for transmitting different signals

Details Hand-held transmitter for transmitting different signals Hand-held transmitter for transmitting different signals

1979-02-13

1980-08-19

Waring, Alvin H.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

340147C, H04B 700

Patent

active

042186811

ABSTRACT:
A hand-held transmitter for the wireless transmitting of signals for operating remote-controlled garage door installations or the like is disclosed. The transmitter comprises a signal generating device, an energy source, and a hand-operable transmitter switch built into the transmitter housing. The transmitter is capable of selectively transmitting at least two different signals and includes a switch which is position-dependent with respect to the force of gravity for selecting one of said at least two different signals to be transmitted.

REFERENCES:
patent: 3363250 (1968-01-01), Jacobson

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