Importance

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Abstract

A multi-radio equipment arrangement comprises multiple transceivers of different band splits. A preferred arrangement utilizes at least one transceiver for communicating on digital 'trunked' RF communications system and at least one transceiver for communicating on a wide-area 'conventional' RF communications system. The multi-radio equipment transceivers communicate with each other and with an equipment control unit via a common internal serial data bus to form a multi-radio local network. Each transceiver incorporates a microprocessor controller that includes appropriate task management and serial bus interface software routines for operating and communicating with other devices on the bus. The control unit provides a user interface comprising conventional radio equipment front-panel controls. A 'trunked' system transceiver is automatically selected whenever its measured audio quality exceeds a predetermined user-programmable minimum level. When audio quality falls below the predetermined level, an auto-select control task (ASCT) automatically switches to the 'conventional' RF transceiver in a manner transparent to the user. Evaluations of the audio quality on each transceiver are assessed on a continuing periodic basic individually by each transceiver and provided to the ASCT. In addition, a radio-roaming feature automatically switches back and forth between two or more 'trunked' communications transceivers depending on audio quality available from each trunked system and a preference selected by the mobile user.

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First Claim