Transmitter output monitor

Details Transmitter output monitor Transmitter output monitor

1974-09-25

1976-05-18

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325133, 343108M, G01S 138

Patent

active

039582442

ABSTRACT:
A monitor for detecting faults in the output signals of a transmitter in which a selected modulation component of the signal is used to activate fault-detecting means. In the case of a DVOR beacon system, the sub-carrier frequency is filtered from the detected and amplified signal obtained by a monitor antenna and applied to a full-wave rectifier, and the fault detecting means responds to the absence of one or more of the unidirectional pulses thus produced.

REFERENCES:
patent: 2496259 (1950-02-01), Bachmann
patent: 3023410 (1962-02-01), Hansel

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