Entel HT644 MARINE VHF
Designed for tough marine environments, the HT644 has firmly established itself as a market-leading commercial-grade VHF. Its rugged, ergonomic design fits comfortably in your hand, and the extremely loud audio means calls are heard by the crew every time. For additional reassurance, the HT644 has a IP68 submersible rating of 2 metres for 4 hours to cope with the harshness of life at sea.
The HT644 has an extensive range of audio accessories including remote speaker microphones and ear defender headsets. Please see our accessories section for a complete listing.
Another variant is the HT644GMDSS, this is a non-wheel mark Marine VHF GMDSS, for vessels that does not require wheelmark or MED approval
- LCD display
- IP68 rating
- Submersible 2 metres depth for 4 hours
- MIL-STD 810/C/D/E/F
- High capacity (2000 mAh) Li-Ion battery
- Primary Lithium one-shot Emergency battery (for HT644GMDSS only)
- Robust Accessory Socket
- Internationa, USA and Canada Marine Channels
- Low battery warning
- Vox (hands-free operation), Audio Accessory Required
General |
|
|---|---|
| Frequency Range | 156 - 163.275MHz |
| Channels | 55 Marine Channels UIC ( USA, International, Canada ) |
| Channel Spacing | 25 kHz |
| Communication Method | Simplex / semi duplex |
| Antenna Impedance | 50 ohm |
| Antenna | Whip / stubby |
| Battery Type | Primary – Lithium metal |
| Operating Voltage | 7.6V |
| Current Drain (nominal) | 40mA |
| Secondary Duty Cycle (5/5/90) | 17.5 hours |
| Microphone | Internal condenser microphone |
| Operating Temperature | -20° to +55°C |
| Construction | Compliant MIL-STD 810C/D/E/F/G |
| 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 |
Transmitter |
|
|---|---|
| Power Output | <1W ERP |
| Frequency Stability | ± 1.5ppm |
| Modulation Limiting | ± 5.0KHz |
| FM Hum & Noise | >-40dB |
| Unwanted Emissions | <0.25µW up to 1GHz, <1µW from 1GHz to 2GHz |
| Adjacent Channel Power | 70dBc |
| Audio Response (FM) | 300Hz to 3KHz -6dB/Octave |
| Audio Distortion | < 5% |
| FM Modulation | 16K0F3E |
Receiver |
|
|---|---|
| Frequency Stability | ± 0.5ppm |
| Analogue Sensitivity | >6dBµ for 20dB Sinad |
| Intermodulation Response | >68dB |
| Adjacent Channel Selectivity | >70dB |
| Spurious Rejection | >70dB |
| Rated Audio Power | 0.5W |
| Audio Distortion | < 5% |
| Hum & Noise | >-40dB |
| Audio Response | 300Hz to 3KHz -6dB/Octave |
| Conducted Spurious Emissions | <2nW up to 1GHz, <20nW from 1GHz to 2GHz |
Standard Accessories in package
- VHF Antenna CAT20
- Belt Clip (attached to rear of battery pack)
- CNB750E Rechargeable Battery Pack (Black)
- CLB750G Emergency Battery Pack (Yellow)
- 100~240V Rapid Charger CSAHT
- Operating Manual
- Preset Marine VHF GMDSS Channels
Optional Accessories
- CAT20/156 VHF Antenna
- Belt Clip CBH750
- CNB750E Battery Pack with rear clip
- CLB750G Emergency Battery Pack with rear clip
- CSAHT 100~240V Rapid Charger
- CLC953 Leather case with shoulder strap
- CXR5/750 Bone Conductive Headset (Non I.S.) with PTT
- CXR16/750 Throat Mic with D-shape earpiece (Non I.S.) with PTT
- PTT750 PTT Switch
- CMP1/750 Mini Lapel Remote Microphone
- CMP750 Heavy Duty Remote Microphone
- CHP750D Dual Muff Headset with PTT
- CHP750HD Dual Muff Headset with PTT for Hardhat use
- CHP750HS Single Sided Headset with PTT for Hardhat use
- EA12/750 D-Shape Earpiece with PTT
- EA15/750 Acoustic Earpiece with PTT
- EHP750 Listen-Only Earpiece
- CXW640 BNC Adaptor
VARIANTS
- HT644GMDSS - For vessels who does not to meet Wheelmark
COUNTERFEIT NOTICE
- Take note of Couterfeits in online websites. Serial numbers can be traced for verification
- More Info Here : https://www.entel.co.uk/verifications/moreinfo.html
- Serial Verification Link