The exciter incorporates state-of-the-art Direct-Digital-Synthesis technology to simultaneously generate an RF carrier and up
to 6 of 20 available standard IRIG-B tones. It has 20 watts of output power and an internal ferrite isolator. The exciter
may also be used as a standalone unit.
The high-power amplifier (HPA) is solid-state, dependable, and cool running, allowing continuous 1-kW output power at temperatures
from 0o to 50oC, and from sea level to 30,000 feet AMSL. The Command Transmitter System is MIL-STD-461C
qualified and designed to military standards for high MTBF and continuous 24-hour-per-day operation.
State-of-the-art CMOS micro-controllers provide full fault detection and reporting. High-power ferrite isolators allow full-power
operation with antenna VSWRs up to 2:1. The HPA is designed for graceful degradation, which allows high-output power operation
even with several amplifier modules inoperative. As an optional feature, each HPA sub-system is provided with an RF switch matrix
that allows real-time replacement of HPA units.
External modulation inputs may be used to modulate the transmitters with externally-generated tones from 10 Hz to 100 kHz.
The system can be switched automatically or manually between transmitters. Automatic switching to the redudant system is completed
in less than 5ms upon detection of an internal fault or at preset RF power thresholds. The system is mounted in two standard 60"-high
racks for easy installation in mobile platforms. The roller-bearing, tiltable rack slides allow easy access within the chassis for
CTS generally ships with front panel button operation for broadcast frequency and tones. Add-on options are available from SPC for
remote control features. For more information on an integrated control system, see SPC's Flight Termination System