Cobham's 3xx Series of audio controllers offer a variety of functions designed for the diverse needs of Police, Forestry, Charter, and Corporate Fleet aircraft platforms. 

With a reduced package size and weight, the 3xx Series is flexible enough to accommodate custom front panel configurations and switch arrangements in response to customer-specific requirements.  In addition, Cobham's Dynamic VOX Noise Reduction System eliminates acoustic background noise by filtering the microphone signal as it enters the intercom system, ensuring clear, crisp communications.   

All 3xx Series audio controllers are TSO'd, support multiple headsets, have a CVR output, high output/low distortion headphone output(s), support multiple receivers and transmitters, include bi-directional interphone tie line(s), and have fail safe/emergency operating modes.

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Model 300A

Cobham's Audio Controller Model 300A is a panel-mounted and lightweight.  It supports five transceivers and five receivers.  RX and ICS level controls on each side.  Field-configurable switch selection of hand mic and PAX audio source.  Three ICS modes: LIVE/KEYED/VOX. Front panel VOX squelch adjustment with DVOX.  Support for PIL, Cop, 5 Pax (2 Pax may be transmit capable) plus hand mic.  Built-in generator with up to four alert tones.  Two ICS tie lines.  Four unswitched inputs.  Supports stereo music and stereo PAX headsets.  Recorder output. 

1. Weight: 2.0 lb / 0.91 kg
2. Dimensions: 5.74"W x 1.87"H x 7.25"L max (145.80mm x 47.50mm x 184.15mm)
3. Power: 0.50 A / 28 Vdc
4. TSO C139 Compliance: DO-160E

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