RADIO SYSTEM CALLS "HELP" WITHOUT WIRES OR BATTERIES
HIGHWAYS APPEAR TO BE A FINE APPLICATION FOR WIRELESS AND BATTERYLESS RADIO TRANSMITTERS THAT ARE PART OF A PUBLIC SAFETY COMMUNICATIONS SYSTEM DEVELOPED BY SOLID STATE TECHNOLOGY, INC. DISTRESSED USERS PRODUCE THE TRANSMITTER'S POWER BY SIMPLY PULLING A DOOR DOWN TO MECHANICALLY GENERATE DECODED SIGNAL ENRGY THAT IS REALISED WHEN THE BOX IS ACTIVATED. USING FREQUENCY MODULATED TONE CODING, THE SYSTEM'S TRANSMITTER CAN SEND SIGNALS AT LEAST 25 MILES LINE-OF-SIGHT, AND JOIN WITH REPEATERS IN THE EVENT OF ROUGH TERRAIN TO EXTEND ITS EFFECTIVENESS. THE DUAL RECEIVING STATION AT CENTRAL HEADQUARTERS HAS A VUSUAL READOUT THAT INDICATES THE NUMBER OF THE BOX SENDING THE DISTRESS SIGNAL, AND A VISUAL INDICATOR THAT DESCRIBES THE REPORTED EMERGENCY'S NATURE.
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Supplemental Notes:
- No 39, pp 35-37, 2 FIG
- Publication Date: 1970
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Communication systems; Disasters and emergency operations; Distress; Frequency modulation; Hazards and emergency operations; Radio; Solid state devices; Transmission; Travelers
- Old TRIS Terms: Radio transmission; Solid state
- Subject Areas: Highways; Operations and Traffic Management; Society;
Filing Info
- Accession Number: 00225781
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 21 1970 12:00AM