AT Intercom System B

Features

Intercom communication for both crew members and Radio access for the commander
Live intercom capability allows crew to perform other tasks simultaneously
Up to four radios can be supported
RFI suppression circuitry significantly reduces effects of near vicinity high power RF transmissions
Functional control of main features of radios (dependent on access permitted by OEM of radios)
Additional unit (RAU) for Command platforms to enable rear compartment access and control of radios
Full duplex Intercom audio
Additional unit (IUU) for personnel carriers so that embarked troops can connect to intercom system
Easily installable with minimal set-up time required
Minimal training with user-friendly HMI (Human Machine Interfaces)
A WBU is included for rear compartment gun position so that Gunner can operate weapon without trailing wires causing obstruction

Functional Characteristics

The System “B” model comprises the following modules;
- Standard Master Control Unit (SMCU)
- Base Unit (BU)
- Power Supply Unit (PSU)

System B can be augmented by either a Radio Access Unit (RAU) and/or Intercom User Unit (IUU). In a Staff Command platform a RAU is added to provide radio access for Staff personnel located in the rear of the platform. However, an alternative is to place the RAU in the front compartment and connect both the Commander and Driver to it and place an SMCU in the rear. The advantage of the latter is that the Staff personnel, through their SMCU, can then exert control over the radios especially selection of live and monitor radios.
In an Armoured Personnel Carrier (APC) platform, an IUU is located in the rear compartment to enable the troops in transit to connect to the intercom system. In addition, a Wireless Belt Unit (WBU) is provided if, in the rear compartment, a gun position is located. The WBU enables the gunner to connect to the intercom system wirelessly therefore avoiding trailing wires which could obstruct his capability

Intercom functions as follows:
- Mic mute (through keypad on SMCU)
- Live mic (through keypad on SMCU)
- Volume switch on front panel
- Intercom interrupt for master position
- Intercom privacy

Radio functionality as follows:
- Radio PTT (through pressel on helmet assembly)
- Live radio select switch on front panel
- Monitor radio select switch on front panel
- Individual radio volume switches on front panel
- Channel select (through keypad on SMCU)
- Mode select (through keypad on SMCU)
- Radio precedence (through keypad on SMCU)
- Radio privacy
- Radio precedence
- Emergency Interrupt
- Other functions can be programmed in to suit

User requirements provided sufficient data on selected radio can be made available

General Features:

• Supports up to four crew members

• It can interface to most types of military, commercial and PMR radios.

• Data capability is an option

• Compact installation (three or four boxes) into a wide variety of platforms

• Simple to use, easy to maintain

• Crisp and clear audio full duplex on Intercom standard half duplex for radio

• Supports two users and can be set for priority usage by one User

• Can be fitted with anti vibration mounts for all terrain modes of operation

• Wide temperature capability -20°C to +75°C

• Accepts wide range of connectors from 38999 to standard commercial

• RFI and ESD suppression

• Low power consumption from 10 watts to 25 watts (“A” to “C” models)

• Input voltage range 16 volts dc to 34 volts dc

• Power routed via interconnecting cables

• Electret or condensing microphones can be used and wide impedance range for earpieces providing capability of accepting most helmet headset combinations

• Pressel assembly can provide mic conditioning and compression, amplification and power for ANR conditions

• All headset connections and pressel connections are fitted with snatch connectors

• Additional Master Control units can be fitted

• Additional Intercom User units can be fitted

• Simultaneous radio usage