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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 .
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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 .
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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 .
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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.
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Dade County Frequencies and Talkgroups
Provides a listing of aviation, marine, business, and federal frequencies together with links to related resources .
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Entropia Network
Commercial wireless voice and data provider with its own trunked radio network in Belgium.
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Genesis Group
Article describing the basics of trunking together with an industry glossary and available software programs.
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GTRAC
Resources for EDACS TrunkTracking. Includes guides on frequencies, programming, talk groups, and related links.
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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 .
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Team Simoco
Designs, installs, and maintains conventional and trunked radio systems.
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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 .
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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 .
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Trunked Radio Systems User's Page
Information on trunked radio systems in the United States, Canada and other countries.
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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.
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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.
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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.
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