Entel HT644 VHF, no ATIS features the latest intelligent lithium-ion battery technology. The socket is designed so that when attached to the portable computer, the connection will withstand any kind of punishment; from dropping to careless abuse. To prevent accidental operation, your radio's buttons and controls can be locked or, if set, automatically locked by the radio.
If you use Entel VOX audio accessories, your HT644 portable can operate completely hands-free. All you have to do is talk and the portable will automatically transmit for you. The HT644 has the ability to actively search for a channel. When the channel is found, the radio automatically selects the channel for you.
Specifications Entel HT644 VHF, no ATIS:
Frequency Range 156 - 163.275MHz
Channels All INT, USA & CAN Marine Channels
Channel Spacing 25 kHz
Communication Method Simplex / semi duplex
Antenna Impedance 50 ohms
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
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]
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
