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Actions Communications, Inc
Provide voice and data communications using LTR trunking technology throughout the greater Puget Sound area. Includes product listings and service area information .
http://www.actcominc.com/index.htm
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Base Radio Systems Program
Provides information on the competitively awarded set of contracts that offer a complete menu of Land Mobile Radio products to all U.S. Federal Agencies worldwide. Managed by the Army .
http://www.monmouth.army.mil/smc/brs/
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Champion Communication Services, Inc.
Provide UHF radio communication products and operate UHF trunked networks providing voice, dispatch and wireless data services. Includes operational area information and a listing of dealers .
http://www.champcom.com/
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Crudele Communications
Sales and service for two-way radio trunking repeater systems. Conventional two-way including UHF, VHF and low-band. FCC licensing and Nextel Phones.
http://www.crucom.com
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Entropia Network
Commercial wireless voice and data provider with its own trunked radio network in Belgium.
http://www.entropia.be
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GTRAC
Resources for EDACS TrunkTracking. Includes guides on frequencies, programming, talk groups, and related links.
http://gtrac.ztn.net/
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Land Mobile Spectrum Planning Options
Article discussing the sharing of trunked public safety radio systems among Federal, State, and local organizations .
http://www.ntia.doc.gov/osmhome/reports/slye_rpt/appendix.html
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Team Simoco
Designs, installs, and maintains conventional and trunked radio systems.
http://www.teamsimoco.com/
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TETRA
Forum representing users, manufacturers, operators, test houses and telecom agencies for terrestrial trunked radio, an open digital trunked radio standard defined by the European Telecommunications Standardisation Institute .
http://www.tetramou.com/
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Trunked Radio Information
Source for monitoring trunked radio communications. Provides a range of information including frequency databases, discussion forums, products, and related links .
http://www.trunkedradio.net/
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Trunking Information
Information on several Motorola systems, the EDACS system which is operated by the City of Clearwater, as well as conventional frequencies for the Greater Tampa Bay Area.
http://www.photonick.net/radio
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United States Patent: 5,815,799
Priority system for a wide area transmission trunked communication system. Here is the LTR Multi-Net Patent that explains the signaling protocol.
http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/search-adv.htm&r=1&p=1&f=G&l=50&d=ft00&S1='EF+Johnson'&OS=
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United States Patent: 5,822,314
Communications system and method of operation. A typical operational function, using timing information inherent in the transmissions, is the encryption/decryption process within the Trans European Trunked Radio (TETRA) standard.
http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=13&f=G&l=50&co1=AND&d=pall&s1=tetra&s2=motorola&OS=tetra+AND+motorola&RS=tetra+AND+motorola
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