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Entel
ATEX-certified marine VHF handheld for hazardous areas, with 4W output, IP68 waterproofing and 13.5 hours of battery life.
Technical
| Frequency Range | VHF 156-163MHz |
|---|---|
| Channels | Marine INT/USA & CAN inc. new 4-digit CH |
| Channel Spacing Analogue | 12.5kHz & 25kHz |
| Battery | CNB950EV2 1800mAh Lithium-ion |
| Overall Dimensions (HxWxD) | 138mm x 60mm x 38mm |
| Frequency Stability | ±0.5ppm |
| Operating Voltage | 7.4V |
| Programmable Buttons | 3 |
| Battery Endurance (5/5/90 - Analog Mode) | 13.5 hours |
| Output Power | 4W High 1W Low |
| Modulation Limiting | ±2.5kHz / ±5.0kHz |
| FM Hum and Noise (Transmitter) | >-40dB / >-45dB |
| Unwanted Emissions | <2nW up to 1GHz, <20nW from 1GHz to 2GHz |
| Adjacent Channel Power | >60dBc / >70dBc |
| Audio Response (FM) (Transmitter) | 300Hz to 3kHz -6dB/Octave |
| Audio Distortion (Transmitter) | <5% |
| FM Modulation | 16K0F3E |
| Analogue Sensitivity | -120dBm (0.2uV) for 12dB SINAD |
| Intermodulation Response Rejection | >68dB |
| Adjacent Channel Selectivity | >60dB / >70dB |
| Spurious Response Rejection | >70dB |
| Audio Output Power | 1 Watt |
| Audio Distortion (Receiver) | 5% |
| Hum and Noise (Receiver) | >-40dB / >-45dB |
| Audio Response (Receiver) | 300Hz to 3kHz -6dB/Octave |
| Conducted Spurious Emissions | <2nW up to 1GHz, <20nW from 1GHz to 2GHz |
| Ex Protection | ATEX II 2G Ex ib IIB T4 Gb |
| Operating Temperature | -20°C to +40°C |
| Storage Temperature | -40°C to +85°C |
| Thermal Shock, Humidity, Shock & Vibration, Packing Test, Drop Test | Compliant MIL-STD-810 C/D/E/F |
| Dust & Liquid Ingress | IP68 (2m 4h Submersible) |
Overview
The Entel DT844FF is a marine VHF handheld covering 156-163MHz, including the newer 4-digit channelling scheme for International, USA and Canadian marine channels, and is certified ATEX II 2G Ex ib IIB T4 Gb for use in hazardous gas atmospheres. It transmits at 4W high power (1W low) from a CNB950EV2 1800mAh lithium-ion battery, rated for 13.5 hours in analogue mode on a 5/5/90 duty cycle. Construction is rated IP68 (2 metres, 4 hours) and compliant with MIL-STD-810 C/D/E/F, with an operating range of -20 to +40 degrees C to suit its Ex rating.
Questions
Yes. The DT844FF carries an IP68 rating, tested to 2 metres' submersion for 4 hours, and its construction is compliant with MIL-STD-810 C/D/E/F for shock and environmental ruggedness.
The DT844FF transmits at 4 Watts on high power and 1 Watt on low power, giving it more range than the 1-Watt-only DT944FF in the same series.
Yes. It is ATEX certified to II 2G Ex ib IIB T4 Gb, suitable for hazardous gas-group IIB zones.
The DT844FF ships with a CNB950EV2 1800mAh lithium-ion battery and is rated for 13.5 hours on a standard 5/5/90 duty cycle in analogue mode.
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