Provide voice and data communications using LTR trunking technology throughout the greater Puget Sound area. Includes product listings and service area information .

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 .

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 .

Sales and service for two-way radio trunking repeater systems. Conventional two-way including UHF, VHF and low-band. FCC licensing and Nextel Phones.

Provides a listing of aviation, marine, business, and federal frequencies together with links to related resources .

Commercial wireless voice and data provider with its own trunked radio network in Belgium.

Article describing the basics of trunking together with an industry glossary and available software programs.

Resources for EDACS TrunkTracking. Includes guides on frequencies, programming, talk groups, and related links.

Article discussing the sharing of trunked public safety radio systems among Federal, State, and local organizations .

Designs, installs, and maintains conventional and trunked radio systems.

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 .

Source for monitoring trunked radio communications. Provides a range of information including frequency databases, discussion forums, products, and related links .

Information on trunked radio systems in the United States, Canada and other countries.

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.

Priority system for a wide area transmission trunked communication system. Here is the LTR Multi-Net Patent that explains the signaling protocol.

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.