Nautel Expands Innovative Q Series FM Transmitter with Launch of Q10

Las Vegas, Nevada, April 7, 2003 - Following the 2001 offering of the world's first 20kW all solid state single-ended FM transmitter, the Q20, Nautel now follows up with 10kW transmitter that incorporates the same technological advantages: improved efficiency and redundancy.

The Q10 is the latest addition to Nautel's innovative Q Series of FM Transmitters, providing broadcasters with a reliable and cost-effective product, and choice of power level combinations of 10kW, 20kW, 30kW and 40kW. Nautel will display the new Q10 transmitter and the Q40 model at the NAB 2003 show in Las Vegas, Nevada, at booth #N2312.

Features of the Q10 transmitter include 68% AC to RF efficiency, redundant parallel rectifiers, built-in dual exciters, dual IPA and dual low voltage power supply facilities for superior redundancy, and built-in transient protection. The Q Series RF amplifier design as used in Nautel FM transmitters around the world for more than 10 years has demonstrated field reliability with MTBF exceeding 2.5 million hours.

The Q Series Broadband RF Module allows for common spares between multiple-transmitter sites with no PA field tuning required. The compact and lightweight design reduces floor loading.

Inherent solid state reliability is enhanced through redundancy and duplication features built into each Q Series transmitter. Multiple power amplifiers provide integral modular reserve. Similarly, the use of separate power supplies for each RF Module enhances operational confidence. The common DC bus is developed from parallel redundant rectifiers. Low velocity ventilation is distributed over all the amplifiers using DC powered fans operating in parallel. Single point failure of critical low level circuits is avoided through duplication.

Using the Q Series 10kW and 20kW power blocks, combined transmitter systems of 30kW and 40kW transmitter power output levels are available in several configurations with facilities for automatic transfer of a single transmitter to antenna.