Entel HT644 VHF LCD Marine Two Way Radio
- Environmental protection to IP68 (2 Meters for 4 hours)
- 2000mAh Li-Ion battery
- Robust accessory socket
- VOX hands free (with audio accessory)
- MILSTD 810C/D/E/F
- Keylock
Entel HT644 VHF Marine Two Way Radio
The first time you handle Entel's HT644 portable you will be impressed by its superior build quality. The Entel HT644 has been designed specifically for those requiring a no compromise marine portable.
From the rugged ergonomic design that fits comfortably in your hand, to the exceptionally loud audio, the Entel HT644 Series 2 portable easily outclasses the competition.
The Entel HT644 Series 2 portable is built to MIL-STD 810C/D/E/F for tough enduring performance and in addition and is fully Submersible to IP68 (2 meters depth for 4 hours).
Entel VHF Marine Two Way Portable Radio
Entel’s HT644 Series 2 portable will exceed the expectations of even the most experienced radio user.
Entel HT644 Marine Two Way Radio Comparison Table
| Entel HT644 | Entel HT644 ATIS | |
| Channel Capacity 16 255 | INT/USA/CAN | INT/USA/CAN |
| IP68 2 Metres For 4 Hours Submersible | ||
| MIL-STD 810 C/D/E/F | ||
| High-capacity LI-ION Battery | ||
| Private Channels | ||
| Low Battery Warning | ||
| VOX (hands Free Operation) | ||
| Channel Naming | ||
| Flash Upgradable (to Add New Features) |
Entel HT644 VHF LCD Marine Two Way Radio General Features:
2000mAh Li-Ion battery
The Entel HT644 portable is 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.
MILSTD 810C/D/E/F
Meeting MIL-STD 810C/D/E/F and providing commercial grade construction for tough, enduring performance. Entel's HT644 portable conforms to stringent standards, enabling it to withstand the everyday rigours of shock, vibration and the corrosive effects of dust and moisture, ensuring many years of trouble free use.
Environmental protection to IP68 (2 Meters for 4 hours)
The practical Entel HT644 portable enjoys an IP68 (2 Meters for 4 hours) rated construction, which means that they are dust protected and fully Submersible.
Flash upgradeable to add future features
Entel adds and improves features on its Entel HT644 radio by way of software updates. Using Flash Upgrade technology your Entel HT644 radios can be upgraded by your Dealer at any time.
Channels
The Entel HT644 portable provides 16 programmable Marine channels.
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.
Entel HT644 VHF LCD Marine Two Way Radio Convenience Features:
Keylock
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 Entel HT644 portable can operate totally hands free. All you need to do is talk and the Entel HT644 portable will automatically transmit for you.
Scan/priority scan
The Entel HT644 Series portable has 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.
Entel HT644 VHF LCD Marine Two Way Radio Security Features:
Programmable scrambler (voice inversion)
Used to encrypt your voice, protecting against casual eavesdropping.
Entel HT644 VHF LCD Marine Two Way Radio Safety Features:
Local Personal Attack Alarm
All Entel HT644 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.
Entel HT644 VHF Marine is supplied with:
- CNB750E - 7.4v, 2000mAh rechargeable Lithium-Ion battery pack
- Drop-in charger
- CBH750 - Spring loaded belt clip
- High efficiency antenna
- User manual
Entel HT644 VHF Marine General Specifications:
| Frequency Range | 156 - 163.275MHz |
| Channels | All INT, USA & CAN Marine Channels |
| Channel Spacing | 25 kHz |
| Communication Method | Simplex / semi duplex |
| Antenna Impedance | 50 ohm |
| Antenna | Whip / stubby |
| Battery Type | 2000 mAh Li-Ion battery pack |
| Power Supply Voltage | 7.4V DC |
| Current Drain (nominal) | 40mA |
| Duty Cycle (5/5/90) | 12.5 hours |
| Microphone | Internal condenser microphone |
| Operating Temperature | -20° to +55°C |
| Construction | MIL-STD 810C/D/E/F |
| IP Rating | IP68 (2 meters depth for 4 hours) |
| Size (mm) | 59.5(W) x 130(H) x 37(D) |
| Weight | 277g with battery and aerial |
Entel HT644 VHF Marine Transmitter Specifications:
| Power Output | High – 5W / Low - 1W |
| Modulation | 8K0G3E/16K0G3E |
| Oscillator Method | PLL |
| Frequency Stability | 2.5PPM |
| Maximum Deviation | ±5 kHz |
| Audio Distortion | < 5% (1 kHz 60%) |
| Spurious Emission | -68 [dBc] |
| Hum & Noise | -40 [dB] |
Entel HT644 VHF Marine Receiver Specifications
| Receiver Type | Double Super Heterodyne type |
| Sensitivity | -0.25uV (12dB SINAD) |
| Frequency Stability | 2.5PPM |
| Spurious Rejection | -60 dB |
| Adjacent Channel Selectivity | -60 dB (Narrow) , -70 dB (Wide) |
| Distortion | < 5% (1 kHz 60%) |
| Hum & Noise | -40 dB |
| Audio Output | 1W |
| Brand | Entel |
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