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Browse Prior Art Database

DIGITAL CONTROL SIGNALLING WITHOUT DEKEY

IP.com Disclosure Number: IPCOM000008545D
Original Publication Date: 1998-Mar-01
Included in the Prior Art Database: 2002-Jun-21

Publishing Venue

Motorola

Related People

Authors:
David Helm

Abstract

Digital Simulcast systems are 2-way radio com- munications systems that utilize single frequency transmissions with multiple transmitters. This gives wide area coverage with a single frequency. A com- parator is the device that sources the simulcast signal and sends it to the multiple transmitters. A DekeyiRekey cycle in a Digital Simulcast system can take a long time (2-300ms). It is desirable to keep the transmitters keyed as long as possible to avoid this dekey/rekey delay.