Transceiver

Details Transceiver Transceiver

1983-02-10

1984-10-02

Bookbinder, Marc E.

Telecommunications

Transmitter and receiver at same station

455156, 455226, H04B 140

Patent

active

044752458

ABSTRACT:
An improvement in a transceiver having first and second carrier frequency oscillators for demodulation, a change-over device for making change-over of oscillation outputs between the first and second carrier frequency oscillators, a mixer for mixing the oscillation outputs from the first and second carrier frequency oscillators, and a switching circuit for connecting and disconnecting the input signal into, or output signal from, said mixer by on-off operations of the telegraphic transmission key to apply the signal to a low frequency amplifier of the transceiver.

REFERENCES:
patent: 2083239 (1937-06-01), Oosterhuis et al.
patent: 2310304 (1943-02-01), McCoy et al.
patent: 2409845 (1946-10-01), Gardiner et al.
patent: 2809288 (1957-10-01), Gilbert
patent: 3676781 (1972-07-01), Worcester

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