The AMCOM™ III 2830A-11 Three-Diver Rechargeable Portable Communicator with Outdoor AC Power Module and International Locking Power Cord features separate channels and volume controls for up to three divers and the tender so that uplink and downlink paths can be customized for varying equipment configurations and individual comfort levels.

ENHANCEMENTS

• High Audio Fidelity
  Ultra-low noise circuit combined with noise suppression circuitry produces crystal clear speech. Automatic gain adjustment will guard audio signal from distortion, enhance speaker protection and audio quality. Increases bandwidth 47%.
• Extended Battery Operation Time
  Audio amplifier card deploys the state-of-the-art Class-D digital audio power amplifier. It has very low power dissipation, produces less heat, and extends battery life up to 32%.
• Flexible Gain Settings
  The audio amplifier card has adjustable gain settings to accommodate different communication applications and environments.
• Ultra-Low Electromagnetic Interference (EMI)
  EMI is achieved through spread-spectrum and de-phase control techniques, providing for optimum integration with diving systems.
• Outdoor Rated AC Power Module
  Weather resistant, IP65 rated AC power entry module accommodates country specific AC power cords.
• Country Specific V-Lock AC Power Cord
  At time of order, simply choose the IP54 rated Locking AC power cord you need.

FEATURES

• Separate channels and volume controls for each diver and tender to accommodate individual earphone and microphone adjustments, equipment variations and individual comfort levels.Divers’ umbilicals can be set to 4-wire mode (full duplex) or 2-wire mode (push-to-talk) or any combination of
• the two modes for any diver.
  Ability to use both dynamic and pre-amplified diver microphones with a unique circuit that detects microphone type and automatically adjusts volume levels.
• Weatherproof push-to-talk microphone for better voice intelligibility topside. For optimum clarity, see Tech Note (below) for other recommended equipment.
• Internal charger allows for simultaneous charging and operation of the unit while protecting the rechargeable battery from being over-charged. Automatically supplies power to the audio amplifier when AC power is disconnected to allow for continued operation.

SPECIFICATIONS

• Input Impedance (Each Input): 250 Ω
• Frequency Response: 300–10000 Hz
• Common Mode Rejection: 40 dB minimum
• Current Drain Maximum Full Volume: 3 amps
• Minimum Quiescent: 0.190 amps
• Output Impedance: 4 Ω
• Power Supply Voltage: 12 VDC nominal (9 volts minimum – 16 volts maximum)
• AC Power Operating Range: 90-264 VAC, 50-60 Hz
• Sensitivity (Input): 5 mV
• Output Power (RMS @ 4 Ω load, 12 VDC): 10 watts audio
• Battery Life: 41 hours
• Dimensions: 10 in. H x 9 in. W x 14.5 in. L (25.4 cm x 22.9 cm x 36.8 cm)
• Weight: 17.05 lbs. (7.73 kg)