AN/FRT-72C Transmitter

The Problem

The Navy's low-frequency, 50-kW radio broadcast transmitters were increasingly difficult to maintain. Their components were obsolete and the level of expertise within the enlisted forces to work with vacuum tube circuits was diminishing.

Hi-Q's Solution

We economically modified existing RF amplifiers in Navy inventory. Then our engineers developed interface circuitry and a fully automated control system, which converted those amplifiers into complete LF broadcast transmitter systems. These new transmitters feature:

• Broadband solid-state amplifiers, which are fully protected against any load from open to short circuit, inductive or capacitive.
• Simplified touch screen operator interface.
• Fully automatic antenna tuning and loading.
• Fully automatic power level control.
• Fully automated startup requires much less operator training.
• Key protected Maintenace Mode to allow only qualified technicians access to manual operation and additional capabilities for troubleshooting.
• No maintenance alignments or adjustments issues that plagued its predecessor.
• On-line and off-line built-in-test program of all control and monitoring circuits.