| AN/VIC-1 (N) ACTIVE NOISE REDUCTION (ANR) ENABLED VEHICULAR INTERCOM SYSTEM |
- Improved Speech Intelligibility: Solid-state electronic design provides exceptional audio performance and increased MTBF (Mean Time Between Failure).
- Active Noise Reduction (ANR) Enabled: The AN/VIC-1 (N) incorporates the latest noise canceling technology when used with ANR headsets. The ANR interface provides exceptional speech intelligibility by canceling ambient noise and protecting vehicle crew members from long-term exposure to damaging acoustic levels.
- Fully Compatible: The AN/VIC-1 (N) is fully compatible with the original AN/VIC-1 system, accessories, mounts and cables. It combines the same reliable design and construction characteristics of the original system - providing similar resistance to harsh battlefield conditions and environmental extremes - with the latest solid-state technology.
System Components
The AN/VIC-1 (N) Vehicular Intercom System provides voice communication to a maximum of five (5) crewmembers. It consists of the following components:
AM-1780/VRC (N) Audio Frequency Amplifier
The AM-1780/VRC (N) Audio Frequency Amplifier is the main function box for the Intercommunication System. It has controls for both power and amplification. It provides connections between the amplifier and the crew members' audio accessories.
It has a volume control and a radio/intercom selection switch. This unit amplifies intercom as well as received audio signals. It also functions as a main control box and an interconnection junction. As a control box it distributes power for intercom and radio operation, permits transmission by the commander or crew member and accentuates intercom audio to override the received signal. As a junction box, it connects the radio set and the intercom system.
The AM-1780/VRC (N) is an enhanced state-of-the-art solid-state replacement for the original AM-1780/VRC and B version. The redesigned AM-1780/VRC (N) eliminates all mechanical relays providing increased reliability and durability. The AM-1780/VRC (N) has ten cable receptacles located on the top (3), bottom (3) and sides (2). Operating control - an indicator lamp - and two pair of binding posts are located on the front.
Intercom Set Control (ISC) C-2298/VRC
The C-2298 is the universal Control Box that can be mounted in any position. The box provides communications to the radio set(s) in the vehicle and with the crew members. Each box has it's own volume control and provides the interface for the headset or handset. The C-2297/VRC is similar but is usually mounted in the driver's position. It provides the same functions as above but also serves as a junction box for the C-2296/VRC. This unit includes a call indicator and means to signal the C-2296/VRC operator along with the ability to disconnect the outside box.
Intercom Set Control (ISC) C-2296/VRC
The C-2296/VRC Control box is mounted outside the vehicle and provides communications to the radio set in the vehicle and with crew members inside the vehicle. The unit includes a connector for a call indicator and means to signal the C-2297/VRC operator. The control box is supplied with an H-207A/VRC Handset as part of the unit. Operating controls and two binding posts for connecting a field telephone are located in the front of the box.
Cable Assembly CX-4720/VRC and CX-4723/VRC
In addition, a special purpose electrical cable assembly CX-4720/VRC is used to connect the vehicular power supply to the amplifier and one CX-4723/VRC is used to connect the amplifier to each intercom control set. While typically the AN/VIC-1 (N) is used in vehicles, it may be used for non-vehicular installations when the correct DC power source is available. It has two line binding posts that may be used to connect a remotely located telephone or switchboard into the vehicular intercommunication system.
Combat Vehicle Crew (CVC) Helmet CVC-132 Series
The CVC-132 CVC series of helmets usually are provided to each crew member as an integral part of the AN/VIC-1 (N) intercom system. The standard CVC-132 and the ballistic version, CVC-132A, provide protection to crewmen operating the vehicle. Both helmets are compatible with the environment in which they are used so that binoculars, protective masks and vehicle instruments can be used and operated without difficulty.
The helmet assemblies have three main components: shell, energy absorbing liner, and headset/microphone communications kit. With the exception of the ballistic value of the CVC-132A, both helmets are identical. Superior noise attenuation and bump protection are assured by the combination of high strength outer shells and an energy absorbing liner that consists of foam sections enclosed in Nomex® mesh fabric for comfort.
Active Noise Reduction (ANR) CVC Helmet Series
AN/VIC-1 (N) Specifications
Physical| Width | Height | Depth | Weight | |
| AM-1780/VCR (N) | 24.76 cm | 14.60 cm | 9.52 cm | 3.17 kg |
| (9.75 inches) | (5.75 inches) | (3.75 inches) | (7 lbs.) | |
| ISC C-2296/VRC | 11.43 cm | 9.52 cm | 9.52 cm | 1.02 kg |
| (4.50 inches) | (3.75 inches) | (3.75 inches) | (2.25 lbs.) | |
| ISC C-2297/VRC | 11.43 cm | 9.52 cm | 9.52 cm | 1.02 kg |
| (4.50 inches) | (3.75 inches) | (3.75 inches) | (2.25 lbs.) | |
| ISC C-2298/VRC | 11.43 cm | 9.52 cm | 12.38 cm | 1.13 kg |
| (4.50 inches) | (3.75 inches) | (4.87 inches) | (2.50 lbs.) |
- Power: 24V dc nominal (dependant upon system configuration)
- Distortion: < 5% @ 600 ohms load
- Audio output: 1W
- Frequency Response: 300Hz to 3,000Hz (± 4 dB)
- Operating: -40º to 68º C (-40º to 154º F)
- Storage: -50º to 78º C (-58º to 172º F)
- Input channels: 4
- Input impedance:
- 3 Channels: 150 ohms
- 1 Channel: 5000 ohms
- Output impedance: 100 ohms
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