Another major mobile radio user in North America has conducted testing of a Tetra digital radio system, following a relaxation of US regulations which formerly excluded the European standard.

Based on an open ETSI standard, Tetra systems offer users a feature-rich, interoperable technology from a variety of manufacturers at competitive prices.

The two-site pilot system was operated by MTA New York City Transit (NYCT), the US’s largest public transport operator, in collaboration with PowerTrunk, the North American offshoot of the Spanish radio manufacturer Teltronic.

The pilot demonstrated the multiple features and functionality of Tetra technology using a range of radio equipment from PowerTrunk, including a telecom switch, base stations, mobile units for buses and support vehicles, handportables, a dispatcher station with two operator positions and a gateway to the telephone network to test cell and PABX/PSTN handovers.

“Our Tetra land mobile radio solution is uniquely suited for transportation systems as proven by the networks we have installed in such major cities as Mexico City, Barcelona, Bogota and Rio”, said José Martín, executive vice president and chief operating officer of PowerTrunk.

“Now we are proud that such a prominent metropolis as New York City hosted our Tetra pilot for its transit system. I would like to say to American LMR users that Tetra has arrived in the US.”

• MTA New York City Transit’s bus fleet numbers over 5900 vehicles and carries an average of 2·69 million users each weekday on more than 280 local and express routes. Its subway network has 660 miles of track.