NSN: 5821-01-413-4233 AN/ARC-220(V)1

5821-01-413-4232 AN/ARC-220(V)2

5821-01-413-4235 AN/VRC-100(V)1

LIN: LIN-R22436 AN/ARC-220(V)1

LIN-R81632 AN/ARC-220(V)2

LIN-R81691 AN/VRC-100(V)1

The AN/ARC-220 and AN/VRC-100 are HF radios that will provide secure and non-secure voice and data communications with automatic link establishment (ALE) and will operate in the 2.0-29.999 Megahertz (MHz) frequency band in frequency steps of 100 Hertz (Hz). The system will provide communications between Army aircraft flying nap-of-the-earth (NOE) profiles, other Army aircraft, and ground radios. The radio system will provide Army aircraft with the capability for continuous and reliable, secure and non-secure communications at non-line-of-sight (NLOS) distances. The radios will be form-and-fit interchangeable with the AN/ARC-199 HF radio and will incorporate the latest state-of-the-art breakthroughs to include ALE and electronic counter-countermeasures (ECCM). The ground configuration of the HF radio is designated as the AN/VRC-100(V)1.

The AN/ARC-220(V)1 is the non-1553 data bus version of the system and will include a HF single side band (HF-SSB) receiver-transmitter (RT) (RT-1749/URC), power amplifier/coupler (AM-7531/URC) and control display unit (CDU) (C-12436/URC). The AN/ARC-220(V)2 is the 1553 data bus version and will only use the RT and power/amplifier coupler. The AN/VRC-100(V)1 configuration is a non-1553 data bus ground version of the system and will consist of a RT, power amplifier/coupler, and a CDU enclosed in a metal housing with a speaker and a combined audio/power supply assembly. This radio system weighs approximately 37.0 pounds.

AN/ARC-220(V)1: AH-64A/D, CH-47D, EH-60A, UH-1H/V, UH-60A/L

AN/ARC-220(V)2: AH-64D, MH-47D/E, MH-60L/K, OH-58D, UH-60Q

The AN/VRC-100(V)1 will be used for testing at the AVIM to fault isolate to the defective shop replaceable unit (SRU) through the use of a built-in-test (BIT) function.

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NSN: 5895-01-426-5318

PART #: 81995-DM001-302

GENERAL:

The IDM is a multi-service communications modem that performs message processing and routing functions utilizing four half-duplex channels. The IDM interfaces with a platform’s mission computer and the on-board radios. The system is capable of supporting analog, digital, and digital secure communications. For over-the-air (OTA) message interoperability, the IDM processes Tactical Fire Direction System (TACFIRE) and Air Force Applications Program Development (AFAPD) messages. The IDM is in Full Rate Production (FRP) with over 2,000 units under contract for the multi-services. The U.S. Army has initiated a Preplanned Product Improvement (P³I) to incorporate the Embedded Battle Command (EBC) software for processing Joint Variable Message Format (JVMF) messages, and will migrate to the MIL-STD-188-220B Protocol.

PHYSICAL CHARACTERISTICS:

The hardware system consists of three advanced microprocessor modules (a Generic Interface Processor and two Digital Signal Processors), a power module, and a rigid/flex backplane assembly. Each Digital Signal Processor is supported by a TMS320C30 processor which modulates/demodulates signals for two half-duplex channels. The Generic Interface Processor is supported by an INTEL 80960MC RISC processor, which performs MIL-STD-1553 interface processing. All modules were designed for the Standard Electronic Module-Format E (SEM-E) form factor. The chassis is capable of holding seven modules. The system dimensions are 9.00 X 7.42 X 5.35 inches and weighs approximately 15 pounds. The IDM requires a 28 Vdc source, and uses 50 watts.

AH-64D, OH-58D, UH-60Q, E-8C, JSTARS CGS, F-16C/D, EA-6B, Rivet Joint

SPECIAL TEST EQUIPMENT:

None