AN/ARC-199 HF SSB Radio
The AN/ARC-199 radio set was the airborne portion of a ground and airborne communications system used to transmit and receive voice and data between stations that are beyond the range of line-of-sight communications. The AN/ARC-199 HF radio was the Army's interim HF radio set to be used until the AN/ARC-220 was fielded. Use of the AN/ARC-199 was on a special mission application basis, and the set is deployed on the UH-1H/V, CH-47D, OH-58C/D, and UH-60A/L.
The AN/ARC-199 system consisted of four line replaceable units which are: receiver transmitter, control display unit, amplifier-coupler and antenna coupler. The radio set was a high-frequency, single-side band radio with selectable output power levels of 4, 40 and 170 watts peak electrical power, and operates from a nominal 27.5 volts direct current power supply. The frequency of operation was from 2.0 to 29.9999 megahertz (MHz).
Transmit and receive frequencies were programmable in 100 Hz increments on 21 presettable channels, for a total of 280,000 possible frequencies. The AN/ARC-199 radio was to be operated as a stand-alone system or from a MIL-STD-1553 data bus. Emission modes included the upper side band, lower side band, double side band, amplitude modulation equivalent and modulated carrier wave modes.
Its built-in test capability included continuous monitoring of important operating conditions. The radio is operable at all times in a half-duplex, push-to-talk mode. Syllabic squelch was controlled from the display panel, and is adjustable from off through eight levels to maximum. Selective squelch or selective address (SELADR) was provided to eliminate the reception of unwanted radio frequency signals. When the SELADR feature is operational, the receiver was automatically squelched until the pre-programmed SELADR code was detected. The squelch was then automatically set to its minimum level, and an audio tone was generated which notifies the operator of an incoming call. The total system weight was 31.05 pounds.
AN/ARC-199 HF SSB Radio was being manufactured by Honeywell Aerospace for the following platforms:: HH-60G, UH-1H/V, CH-47D, OH-58C/D, and UH-60A/L.
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