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Built to meet the needs of tough marine environments, the DX500 Series is certified to the UL913 intrinsically safe standard and offers outstanding performance. This commercial-grade portable delivers unmatched audio volume and clarity. The intuitive controls, designed for gloved hands, complement the high-contrast OLED display, which is easy to read in low-light conditions.

The compact and ultra-durable DX500 provides a far more natural sounding, 3 watts of digital audio, clearer and louder than radios twice their size. For further peace of mind, the DX500 Series has a market-leading IP68 submersible rating of 2 metres for 4 hours to cope with the harsh conditions of life at sea. We have produced a selection of certified and approved audio accessories for the DX500 Series, including remote speaker microphones, bone conductive skull mics and ear defender headsets. Please see our accessories section for a complete listing.

Intrinsically Safe Certified to UL913 by SGS:
ANSI/UL913 5th Ed
Class I, II, III, Division 1, Groups C-G, T3
Class I, Division 2, Groups A-D


  • All Marine VHF Channels (INT, USA, CAN)
  • IP68 Submersible (2m, 4 hours) 
  • Compliant to MILSTD construction 810C/D/E/F/G
  • Salt Water anti-corrosion chassis coating
  • 3 watts loudest & best clarity audio - in class  
  • Programmable buttons 
  • Gold plated accessory connector 
  • Locking accessory connector
  • Accessory audio tailoring optimises audio for each accessory
  • Voice annunciation (channel & battery)
  • Table Scan
  • Drag and drop programmer, can be done onboard

If you require a feature not listed above, please let us know.

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Channels - The DX542-IS is pre-programmed with all International, USA and Canadian channels, you can also program an additional 16 private channels.

Environmental protection - IP68 (2 Meters for 4 hours) Entel's radios are approved to IP68 (2 Meters for 4 hours) rated construction, which means that they are dust protected and fully Submersible (even with the accessory cover removed).

MILSTD 810C/D/E/F/G - Meeting MIL-STD 810C/D/E/F/G and providing commercial grade construction for tough, enduring performance. Entel's radios conform to stringent standards, enabling them to withstand the everyday rigours of shock, vibration and the corrosive effects of dust and moisture, ensuring many years of trouble free use.

Outstanding Audio - Entel’s radios offer best-in-class performance with natural-sounding digital audio.

Li-ion battery technology & improved talk time - Entel's radios are supplied with the latest, high-capacity, intelligent Lithium-ion battery technology as standard. One key advantage of Lithium-ion battery technology is the way it eliminates ‘memory effect’, meaning that there is no need to fully discharge your battery before recharging. As a result of this, you are assured of a full charge each and every time you take your Entel battery from its charger.

Programmable buttons - To ensure your Entel radio meets your exact need its buttons can be programmed with the exact features you need.

Gold plated accessory connector - The radios multi-pin interface and Micro-USB socket are both submersible and gold-plated to minimise any risk of damage and protect against corrosion.

Locking accessory connector - All Entel accessories incorporate a robust locking connector and the radios accessory socket has been specifically designed so that when an accessory is secured to the portable, the connection can withstand any amount of punishment; from dropping to careless misuse.

Accessory audio tailoring - Entel's radios identify the attached accessory and automatically adjust its settings ensuring the most natural and readable audio possible is delivered even with bone conductive accessories and breathing apparatus com kits.

End user programmer - Entel adds and improves features on its DX radios by way of free software updates. Using Entel’s innovative End User Programmer app Entel DX radios can be easily upgraded without the Dealer having to visit site or courier the radios back and forth saving significant time and expense.

Table scan - enables multiple, advanced, channel scan lists which are pre-programmed by your Entel dealer.

Voice annunciation – This programmable feature announces either the channel position selected or, in the case of marine models, the marine channel number (alias) – this gives further assurance to the user that they’ve selected the correct channel allowing them to focus on the task in hand.


Intrinsically Safe Certified to UL913 by SGS:

ANSI/UL913 5th Ed
Class I, II, III, Division 1, Groups C-G, T3
Class I, Division 2, Groups A-D


Frequency Range VHF 156 to 163MHz
Channel Spacing Analogue 12.5 & 25 KHz
Operating Voltage 7.6V
Weight 259g - with CNB450E-IS
Overall Dimensions (HxWxD) 97mm x 59.5mm x 37mm
Programmable Buttons 3
Channels INT/USA/CAN mode plus private
Battery CNB450E-IS 2200mAh Lithium-ion
Battery Endurance (5/5/90) Analogue mode 14 hours
Battery Endurance (5/5/90) Digital mode n/a


Output Power VHF 5W(high)-1W(low)
Modulation Limiting ±5.0KHz / ±2.5KHz
FM Hum and Noise >-40dB
Unwanted Emissions <2nW up to 1GHz, <20nW from 1GHz to 2GHz
Adjacent Channel Power 70dBc / 60dBc
Audio Response (FM) 300Hz to 3KHz -6dB /Octave
Audio Distortion <5%
FM Modulation 16K0F3E / 8K0F3E
4FSK Digital Modulation 7K60FXE / 7K60FXD


Analogue Sensitivity -120dBm (0.2uV) for 12dB Sinad
Intermodulation response >68dB
Adjacent Channel Selectivity >70dB / >60dB
Spurious Rejection >70dB
Audio Output Power 2 Watts
Audio Distortion <5%
Hum and Noise >-40dB
Audio Response 300Hz to 3KHz -6dB /Octave
Conducted Spurious Emission (ETSI) <2nW up to 1GHz, <20nW from 1GHz to 2GHz


Operating Temperature -20°C to +55°C
Storage Temperature -40°C to +85°C
Thermal Shock, Humidity, Shock & Vibration, Packing Test, Drop Test Compliant MIL-STD810 C/D/E/F/G
Water Ingress IP68 2 metres, 4 hours submersible
Ex Protection Intrinsically Safe Certified to UL913 by SGS:
- ANSI/UL913 5th Ed
- Class I, II, III, Division 1, Groups C-G, T3
- Class I, Division 2, Groups A-D

As standard the DX-IS Series portable is supplied with:

  • Li-ion battery pack
  • Drop in charger
  • Spring loaded belt clip
  • High efficiency antenna
  • Quick start user guide

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