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.
Dade County Frequencies and Talkgroups - Provides a listing of aviation, marine, business, and federal frequencies together with links to related resources .
GTRAC - Resources for EDACS TrunkTracking. Includes guides on frequencies, programming, talk groups, and related links.
Land Mobile Spectrum Planning Options - Article discussing the sharing of trunked public safety radio systems among Federal, State, and local organizations .
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.
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 .
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 .
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 .
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.
Team Simoco - Designs, installs, and maintains conventional and trunked radio systems.
Entropia Network - Commercial wireless voice and data provider with its own trunked radio network in Belgium.
Fylde Micro, Ltd. - Provides trunking systems to OEMs, dealers, and end users. Includes dealer locator.
Gould Electronics - Offers trunked radio solutions as well as shop watch schemes, conventional 2-way radio and fire service communications systems.
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.
NIC Technologies - Independent service provider of radio communication systems specializing in trunked radio and wireless point-to-point systems.
Nighthawk Communications, Inc. - Offers VHF and UHF wide area LTR System, sales, rentals and repair services in the Los Angeles area.
Genesis Group - Article describing the basics of trunking together with an industry glossary and available software programs.
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