VHF/radar transponder collision avoidance aid

Details VHF/radar transponder collision avoidance aid VHF/radar transponder collision avoidance aid

1983-01-17

1987-08-04

Tarcza, Thomas H.

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

Ship collision avoidance

342 42, 342 57, G01S 1393

Patent

active

046849491

ABSTRACT:
A radiotelephone and a radar transponder are interconnected in such a manner as to establish a VHF communications link via the radiotelephone in response to interrogation of the radar transponder. The radar transponder will ordinarily be periodically enabled and will transmit a code which partially identifies the transmission source in response to interrogation when enabled. The radiotelephone will also be periodically enabled so as to transmit a more complete identifying code and requests and coded information received via the VHF communications link will be decoded and displayed.

REFERENCES:
patent: 3644883 (1972-02-01), Borman et al.
patent: 3806922 (1974-04-01), Isbister
patent: 4104629 (1978-08-01), Isbister et al.

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