Amron Two-Diver Standard Portable Communicator REFERENCE ONLY

SKU

OBS-2820A-01

$0.00

This item number has been replaced by 2820A-11

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Specs

More Information
	This item number has been replaced by 2820A-11 NEWLY DESIGNED ENHANCEMENTS: • High Audio Fidelity Ultra-low noise circuit combined with noise suppression circuitry produces crystal clear speech.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 band width 47%. • Extended Battery Operation Time Audio amplifier card deploys the state-of-the-art Class-D digital audio power amplifier. 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. FEATURES: Single volume control for both divers. Diver’s umbilicals can be set up on 4-wire mode (full duplex) or 2-wire mode (push-to-talk) or any combination of the two modes for each diver. Ability to use both dynamic and pre-amplified diver microphones with a unique circuit that detects microphone type and automatically adjusts volume levels. The divers’ connections consist of cross-talk and separate speaker and microphone inputs. 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. See Tech Note (below) for recommended accessories. SPECIFICATIONS: Input Impedance (Each Input): 250 Ohms 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 Ohm Power Supply Voltage: 12 VDC Nominal (9 Volts Minimum - 16 Volts Maximum) AC Power Operating Range: 90-264 VAC, 50-60 Hz Sensitivity (Input): 0.5 mV Output Power (RMS @ 4 Ohm Load, 12 VDC): 10 Watts Audio Battery Life: 45 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: 17.25 lbs. (7.82 kg) INCLUDED WITH COMMUNICATOR: AMCOM II 2820A-01 Two Diver Standard Rechargeable Portable Communicator includes: (1) Amron 2890-05 12 VDC Sealed Lead Acid Gel-Cell Rechargeable Battery with Slide terminals (1) Amron 282XA-UM Two Diver Portable Communicator User Manual AVAILABLE OPTIONS: Amron 2405-28 Hand-Held Push-to-Talk Microphone Amron 2401-28 Deluxe Headset with Boom Mic Amron 2460-28 Standard Headset with Boom Mic Amron 2822-28 Remote Walk-and-Talk (4-wire mode) Amron 2821-28 Remote Walk-and-Talk (2-wire mode) TECH NOTE: All communicators will inherently transfer topside noise to the divers when the tender speaks directly into the communicator’s panel speaker. To eliminate background noise at the surface, we recommend purchasing the 2405-28 Push-to-Talk Microphone (not included with this model). For optimum communications, it is recommended to use the 2401-28 Deluxe Headset with Boom Mic, topside. For tender maneuverability, use the 2401-28 Deluxe Headset with Boom Mic along with the 2822-28 Remote Walk-and-Talk (4-wire mode) or the 2821-28 Remote Walk-and-Talk (2-wire mode). For wireless tender communications, order the 2825A-03 Two Diver Deluxe Portable Communicator with built-in Wireless Tender option.

Information

This item number has been replaced by 2820A-11

The AMCOM™ II 2820A-01 Two-Diver Standard Portable Communicator features a single channel and one volume control for both diver’s uplink and downlink communications to and from the tender. ^[1]

The newest version of the AMCOM™ II has the same user-interface, rugged durability and great sound quality as its predecessor with several new digital enhancements: (1) High-Audio Fidelity; (2) Extended Battery Operation; (3) Flexible Gain Settings and (4) Ultra-Low Electromagnetic Interference (EMI). The Overview tab outlines the many outstanding features that continue to make this model the most popular and powerful communicator on the market today.

^[1] If more versatility is wanted in controlling the divers’ earphones and microphone volume settings, we recommend purchasing the AMCOM™ II Deluxe 2825A-01 which features separate channels and volume controls for each diver and the tender so that uplink and downlink paths can be customized for varying equipment configurations and individual comfort levels.

Resources

ATTACHMENTS

Amron 282XA-UM Two Diver Portable Communicator User Manual REV 3.0

(Size: 405.3 KB)

Amron Panel Cut-Out and Mounting Detail for 28XXA-010 Portable Radios

(Size: 73.4 KB)

Amron Panel MIC Data Sheet Rev 3.0

(Size: 398.5 KB)

FAQ's

What is the electrical protection (IP) rating on the AMCOM II 2820A Communicators?

2820A Portable Series: Case Closed – IP67, Case Opened – IP66.

Can you stack the banana plugs from the diver's communicator cable so you can have two divers on each diver channel?

Although it may be possible, we strongly discourage such operation. The added workload would cause overheating and stress to the amplifier card. Prolonged use in this condition will eventually cause permanent damage and failure to the amplifier card.

What type of cable do I need to connect my Amron communicator to my Outland video system?

Amron communicators and Outland Technology’s video systems have a RCA Phono Jack. To connect the two systems together, you will need an audio cable with RCA Plugs on each end.

How do I install a new microphone in my Amcom II or III Communicator?

Please refer to the Panel Microphone Installation instructions located in the attachments tab.

Should I use a GFI when operating my radio off AC power?

When operating your Amron Diver Communicator on AC, it is critical to use a Ground Fault Circuit Interrupter (GFCI) or isolation transformer for tender and diver safety. Surges and spikes are common on AC lines found on ships, generated locally, or at the end of long extension cable runs and can exceed 1kVolt. Such surges and spikes can cause the fuse to blow on the amplifier card assembly. The power supply is designed so that such a failure will be isolated and will not cause a safety issue to the tender or divers. It is strongly advised that your Amron Diver Communicator be operated on an AC circuit with a high quality surge arrester or an AC isolation transformer.

Can I operate my communicator while I’m charging the internal battery?

Yes, however, the charger will charge the battery at a slower rate as some of the charger power is being used to operate the communicator.

When my battery does not appear to be holding a charge, how do I know if the problem is a bad battery or if the charger is broken?

To determine whether the problem is with the battery or charging circuitry, you will need to verify if the battery is being charged.

Troubleshooting:

Unplug your communicator and turn on the POWER switch.
Measure the voltage across the yellow PUSH-TO-TALK (PTT) jack and write down this value for future reference. It should be greater than 9 Volts.
Plug the communicator into an AC source and verify that the AC POWER LED on the front panel turns on.
Re-measure the voltage across the PTT jack and note it down for future reference. It should be higher than the previous measurement.
If the AC POWER LED does not light up when the communicator is plugged in, then check fuse located on the amplifier card.
Allow the communicator to charge overnight.
Unplug the communicator and re-measure the voltage across the PTT jack.
1. If it is the same or less than the voltage you measured previously, then the charger is broken and the communicator needs to be sent in for repairs
2. If the voltage higher than previous measurement but less than 13.5 Volts, then the battery is bad and needs to be replaced.
3. If it is greater than 13.5 Volts but it still appears that the battery is not holding a charge, contact Amron for additional support.

Can my Amcom communicator work on 240V / 60Hz?

Yes, the unit has an operating range of 90-264 VAC, 50-60 Hz..

What are the environmental parameters that Amron's comms units can be used in?

Temperature: Class C Ambient Temperatures –25°C to +55°C Humidity: Class A Relative humidity up to 96% at all relevant temperatures, no condensation Vibration: Class A On bulkheads, beams, deck, bridge EMC: Class B All locations including bridge and open deck