Patent ID: 7096013

Claim:
In a trunked radio communications system operating in the 800 MHz spectrum, wherein the trunked radio communications system comprises at least one site, at least one control channel, at least one voice channel, and a plurality of receiving devices, a method for operating by mapping channels to frequencies, the method comprising the steps of: at a receiving device in the trunked radio communications system: receiving a voice channel number, wherein the voice channel number is communicated in an outbound signaling message defined by Motorola's 3600-baud radio trunking protocol; and tuning to about a transmit frequency of 806.0250 MHz, if the voice channel number is 440; tuning to about a transmit frequency of 806.0500 MHz, if the voice channel number is 441; tuning to about a transmit frequency of 806.0750 MHz, if the voice channel number is 442; tuning to about a transmit frequency of 806.1000 MHz, if the voice channel number is 443; tuning to about a transmit frequency of 806.1250 MHz, if the voice channel number is 444; tuning to about a transmit frequency of 806.1500 MHz, if the voice channel number is 445; tuning to about a transmit frequency of 806.1750 MHz, if the voice channel number is 446; tuning to about a transmit frequency of 806.2000 MHz, if the voice channel number is 447; tuning to about a transmit frequency of 806.2250 MHz, if the voice channel number is 448; tuning to about a transmit frequency of 806.2500 MHz, if the voice channel number is 449; tuning to about a transmit frequency of 806.2750 MHz, if the voice channel number is 450; tuning to about a transmit frequency of 806.3000 MHz, if the voice channel number is 451; tuning to about a transmit frequency of 806.3250 MHz, if the voice channel number is 452; tuning to about a transmit frequency of 806.3500 MHz, if the voice channel number is 453; and tuning to about a transmit frequency of 806.3750 MHz, if the voice channel number is 454.