Entel HT583

Intrinsically Safe UHF Radio

Reliable, Tough, Marine UHF Radio (400 to 470 MHz)

Entel HT583 is not just an essential marine communications tool, ready to go at the touch of a button. If and when you find yourself on the wrong side of the cruel sea , or in an environment of hazardous and explosive material, It can be a life-saver.

So don’t compromise by relying on inferior products, insist on the radio that’s way out in front of its competition. Built to a stringent standard, the Entel HT583 is designed to shrug off wind, rain and salt water to give you years of trouble-free use. You can depend on it.


  • 1800mAh ATEX Lithium Ion battery technology
  • Fully submersible IP68
  • Robust MIL-STD construction
  • Simple and intuitive operation
  • High visibility back-lit LCD
  • Exceptionally loud audio
  • Robust multi pin accessory connector
  • Lightweight polycarbonate construction, just 277g
  • Extensive range of optional accessories
Entel HT583 Intrinsically Safe UHF Radio 1

Entel HT583 Intrinsically Safe UHF Radio 2    Entel HT583 Intrinsically Safe UHF Radio 3    Entel HT583 Intrinsically Safe UHF Radio 4

Key Features



Entry & Sophisticated Models

The Entel HT500 Series 2.0 ‘Entry’ models provide instantaneous Push-To-Talk communications with ‘Advanced’ models adding extra features including Individual & Group calling, Lone-Worker protection, Text messaging etc.

Intrinsically Safe

All HT500 Series 2 portables are IECEx (Ex ib IIA T4) Intrinsically Safe certified.

Environmental protection to IP68 (2 Meters for 4 hours)
The practical HT500 Series 2.0 portables enjoy an IP68 (2 Meters for 4 hours) rated construction, which means that they are dust protected and fully Submersible.


Meeting MIL-STD 810C/D/E/F and providing commercial grade construction for tough, enduring performance. Entel’s HT500 Series 2.0 portables 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.

1800mAh Li-Ion battery

HT500 Series 2.0 portables are supplied with the latest intelligent Lithium-Ion battery technology as standard. One key advantage of Lithium-Ion battery technology is the way it eliminates ‘memory effect’ meaning there is no need to fully discharge your battery before recharging. Therefore you are assured a full charge each and every time you take your Entel battery from its charger.

Flash upgradeable to add future features

Entel adds and improves features on its HT500 radios by way of software updates. Using Flash Upgrade technology your Entel HT500 radios can be upgraded by your Dealer at any time.

Robust accessory socket

The 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. Furthermore, the securing bolt incorporates a shearing point to protect the connector.


All non-display HT500 portables provide 16 programmable channels. Display portables provide 255 programmable channels.



To avoid accidental operation your radios keys & controls can be locked by the user or, if set, automatically by the radio.

VOX hands free (with audio accessory)
When using an Entel VOX enabled audio accessory, your HT500 portable can operate totally hands free. All you need to do is talk and the HT500 portable will automatically transmit for you.

Scan/priority scan

The HT500 Series portables have the facility to scan for an active (or free) channel. When the channel is found, the radio will automatically select it for you. Priority scan will allow you to select one channel in the scan list that is treated as a “Priority”. It will be checked more frequently than all other channels in the list.

Programmable channel monitor button

If you have channel protection enabled on your HT500 portable, all signals other than your own networks will be filtered out. This can be temporarily disabled allowing you to monitor all signals on your channel.


Some radio systems use a “repeater” to increase the system’s range. However when you go outside the range of the repeater, communication with another radio is not possible no matter how close you are. Talkaround enables you to talk directly with another radio, bypassing the repeater.

Individual & Group Calling (advanced models only)
Entel’s advanced 5-Tone Selcall & MPT1327 Trunking models provide Individual, Group & All Call. The radio’s contact list can be used to select the person to call, as well as speed dials.


Programmable scrambler (voice inversion)
Used to encrypt your voice, protecting against casual eavesdropping.


Local Personal Attack Alarm

All HT500 portables include a personal attack alarm option. Once activated the speaker of your radio will emit a high pitched siren as a deterrent and provides a local call for assistance.

Lone-Worker & Man-Down Alarms (advanced models only)

Entel’s advanced 5-Tone Selcall models are designed to protect lone workers. The radio’s orange button can be pressed to send an emergency signal to your colleagues. Should someone fall and become unconscious the optional Man-Down sensor can automatically send the alarm. The radios Lone-Worker timer checks the radios user is ok, if no response is received the radio will automatically send the alarm. The high volume local siren additionally alerts non-radio users in the vicinity to the emergency. This capability can be programmed by your Dealer.

Scope of Supply

As standard the HT Series portable is supplied with:

  1. CNB750E – 7.4v, 2000mAh rechargeable Lithium-Ion battery pack
  2. Drop-in charger
  3. CBH750 – Spring loaded belt clip
  4. High efficiency antenna
  5. User manual



HT Series Marine Brochure V2.9  Entel HT583 Intrinsically Safe UHF Radio 3  3 MB

Entel HT583 Intrinsically Safe UHF Radio Brochure  Entel HT583 Intrinsically Safe UHF Radio 3  760 KB