Business

USA - Offers wide area trunking service covering Central and South Texas.

USA - Offers wide-area repeater service for Eastern Oklahoma to Central Arkansas.

England - Provides trunking service covering North Eastern England.

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

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

Puerto Rico - Provides trunking site rental and related repeater services.

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

TETRA and Critical Communications Association supports the development of TETRA standards and promotes adoption for terrestrial trunked radio, an open digital trunked radio standard defined by the European Telecommunications Standardisation Institute .

Netherlands - Consultants in Telecom and IT for design, roll-out, expansion and maintenance of TETRA networks and mobile radio networks.

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.