Radio locating unit for persons in distress

Details Radio locating unit for persons in distress Radio locating unit for persons in distress

1975-10-15

1977-08-30

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325 16, 325 18, G01S 502

Patent

active

040457990

ABSTRACT:
Radio locating unit for persons in distress which unit is provided with a directional antenna whereby it can be used as active search unit by a rescuer and which is further provided with an omni-directional antenna and automatic switching means for energizing the transmitter part whereby it is used as passive unit by a person to be rescued e.g. a person buried by an avalanche.

REFERENCES:
patent: 3199101 (1965-08-01), Hansel
patent: 3777267 (1973-12-01), VAN DER Floe et al.

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