A radio beacon

The invention concerns a radio beacon for transmitting a distress signal. The beacon includes a signal generator which includes a non-ovenised crystal oscillator to generate a carrier frequency for a transmission signal. A radio frequency transmitter is provided to transmit a series of signal bursts...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KEVAN WILSON-ELSWOOD, LANCE MAY, CHRIS MADDOX, VINCE TODD, ASHLEY BENNETT, SIXIONG FAN, CRAIG DUNCAN
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS ANALOGOUS ARRANGEMENTS USING OTHER WAVES AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRICITY GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING ORDER TELEGRAPHS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SIGNALLING SIGNALLING OR CALLING SYSTEMS TESTING
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Beschreibung
Zusammenfassung:	The invention concerns a radio beacon for transmitting a distress signal. The beacon includes a signal generator which includes a non-ovenised crystal oscillator to generate a carrier frequency for a transmission signal. A radio frequency transmitter is provided to transmit a series of signal bursts of the transmission signal. A battery power supply is included to supply power to the beacon to transmit the series of signal bursts. Control electronics are provided to substantially prevent the carrier frequency of the transmission signal changing during transmission of each burst.