406 MHz emergency beacon with in-band homing transmitter

Details 406 MHz emergency beacon with in-band homing transmitter 406 MHz emergency beacon with in-band homing transmitter

2006-01-31

2006-01-31

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

C342S386000

Reexamination Certificate

active

06992623

ABSTRACT:
A search and rescue beacon includes a main transmitter transmitting a Cospas-Sarsat signal at a main frequency and an auxiliary homing transmitter transmitting a homing signal at a homing frequency close to the main frequency. Advantageously both the Cospas-Sarsat signal and the homing signal are generated by a single synthesizer switching between a main Cospas-Sarsat burst transmission and a continuous homing frequency transmission of the homing signal. The Cospas-Sarsat signal is advantageously transmitted at a higher power than the homing signal. The single synthesizer may use a single amplifier chain. The single synthesizer and amplifier chain may use a single antenna.

REFERENCES:
patent: 5218366 (1993-06-01), Cardamone et al.

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