The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2006
Filed:
Aug. 30, 2005
Tanhoa Trandai, Arlington Heights, IL (US);
Daniel J. Mcdonald, Cary, IL (US);
Christopher H. Wilson, Lake Zurich, IL (US);
Tanhoa Trandai, Arlington Heights, IL (US);
Daniel J. McDonald, Cary, IL (US);
Christopher H. Wilson, Lake Zurich, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A receiving device in a trunked radio communications system determines transmit and receive frequencies by a mapping. The receiving device receives 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. The receiving device tunes to about a transmit frequency of 806.0250 MHz, if the voice channel number is 440; tunes to about a transmit frequency of 806.0500 MHz, if the voice channel number is 441; tunes to about a transmit frequency of 806.0750 MHz, if the voice channel number is 442; etc. The receiving devices tunes to about a receive frequency of 852.5250 MHz, if the voice channel number is 500; tunes to about a receive frequency of 852.5500 MHz, if the voice channel number is 501; tunes to about a receive frequency of 852.5750 MHz, if the voice channel number is 502; etc.