Jamming of keyed continuous wave radio signals

Details Jamming of keyed continuous wave radio signals Jamming of keyed continuous wave radio signals

1963-08-07

1980-07-22

Farley, Richard A.

Telecommunications

Interference signal transmission

375121, H04K 300

Patent

active

042142083

ABSTRACT:
1. A jamming station for radiotelegraph signals comprising, a transmitter, aid transmitter comprising an exciter, the output of said exciter being connected to the input of a power amplifier via a normally closed gate, the output of said power amplifier being connected to a duplex antenna; a receiver the input of said receiver being connected to said duplex antenna via a transmit-receive switch which is normally in the receive position, means to gang tune said receiver and transmitter to a radiotelegraph signal to be jammed, an automatic frequency control bias connected from said receiver to said exciter, an adjustable pulse generator having its input connected to the automatic gain control line of said receiver and arranged to generate a pulse at the end of each pulse of radio frequency in said radiotelegraph signal, the pulse output of said pulse generator being arranged to open said gate and to energize said transmit-receive switch, thereby causing said jammer to emit a pulse of radio frequency energy and to simultaneously disable said receiver, the duration of the pulse output of said pulse generator being adjusted to substantially fill in the gaps or spaces in said radiotelegraph signal, and means to monitor the output of said receiver.

REFERENCES:
patent: 2582968 (1952-01-01), Deloraine et al.

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