TRU RPG-20SW Shortwave Transmitter

The RPG-20SW (20W average, 80W peak) shortwave transmitter is ideally suited for low-power radio stations that demand broadcast quality. An integrated single box solution incorporating the exciter, RF amplifier, power supply and modulator, the RPG-20SW can also serve as an exciter for driving external RF amplifiers.

Designed for pristine audio quality and unsurpassed reliability, thousands of TRU's AM transmitters are operating trouble-free in some of the world’s most remote installations. With comprehensive features and creative design, the RPG-20SW is exceptional value for those on a budget but don’t want to compromise on performance.

All TRU AM transmitters are loaded with features, such as a front-panel LCD display, adjustable RF output power and modulation, Underlying architecture includes a unique dual-loop Virtual VFO exciter, ultra-low distortion AM modulator integrated into a great performing, highly stable AM transmission system. Developed for global use, the RPG-20SW is frequency agile and complies with all applicable CE and EU regulations.

The power amplifier in the RPG-20SW is based on modern MOSFET devices. A high power fan draws fresh air through the transmitter’s heatsink to keep the transistors and amplifier cool. Amplifiers are protected from damage by temperature control systems and antenna fault (VSWR) monitoring which react to faults by reducing the output power to a safe operating level, keeping you on air rather than shutting down completely.

The Virtual VFO dual loop PLL system allows perfect audio flatness to below 10 Hz.

The RPG-80 is more configurable and flexible than other units in their class. The rear panel contains RCA unbalanced audio input and UHF female for the RF output

• Designed for continuous 24/7 operation
• DDS (Direct Digital Synthesizer)
• Forward and Reflected Power Measurement
• High VSWR protection
• Over-temperature protection
• PLL lock indicator