TX3820V VHF Commercial Radio

The TX3820V is built for VHF 136-174 MHz and comes packed with an impressive list of features. With its 'Flash' upgradeable microprocessor and flexible programming, future upgrading of your two-way radio requirements becomes a reality. The compact modular design of the TX3820V incorporates a rugged die-cast aluminium chassis which allows it to withstand constant vibration and extreme temperatures.

The TX3820V provides a full 25 Watts of output power without compromising the size of the radio.

Taking advantage of the full diecast chassis and top cover, this design allows the unit to dissipate the heat generated by the 25 Watt output power whilst providing a very rugged and robust radio. GME is so confident in the design we offer a full two (2) year manufacturer's warranty.


Installation is simple. Measuring just 128 mm (W) x 165 mm (L) x 29 mm (H) the TX3800 easily fits into the confines of modern vehicles. For traditional DIN sized console mounting the MBD001 DIN adaptor kit allows the TX3800 to be easily installed or removed. The built-in speaker can be mounted facing either upwards or downwards for clear audio.

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Features

  • radio

Specifications

GENERAL
Compliant Specification Compliant with Australian Test Standard AS4295
Frequency Bands 136 - 174 MHz
Number of Channels 99
Channel Spacing 25 kHz / 12.5 kHz (N) Version
Frequency Stability +/- 1khz VHF (-10 to +60)
Modulation Direct FM
Operation Mode Simplex or half duplex with repeater talk-around
Scanning Speed Selectable 50/100/200 ms per channel
Antenna Impedance 50 Ohms nominal
Antenna Connector BNC (chassis mount)
Nominal Voltage 13.8 volts DC negative earth
Operating Voltage Range 10.8 - 15.6 volts
Test Voltage 13.8 volts DC
Reverse Polarity Protection 18 volt diode crowbar
D.C. Current 0.2 amps receive (power save < 60 mAh) | 6 amps (UHF) transmit into 50 Ohms
TRANSMITTER
Operating Temperature Range -10 °C to +60 °C
RF Output High: 25 watts max | Low: 5 watts adjustable
Transmit Duty Cycle 25% at maximum output (25 watts)
RF Switching Bandwidth VHF 38 MHz
Deviation Limiting ±2.5 kHz or ±5 kHz at +20 dB AF limiting
Pre-Emphasis +6 dB per Octave
AF Distortion 3% below limiting
Residual Modulation -40 or -45 dB
RECEIVER
Sensitivity Spurious Outputs -122 dB for 12 dB SINAD (CCIR) < -75 dBc (Compared to carrier)
Circuit Type Double conversion superheterodyne
RF Switching Bandwidth VHF-38 MHz
Intermediate Frequencies 1st: 21.4 / 38.85 MHz | 2nd: 450 kHz
Sensitivity -121 dBm for 12 dB SINAD unweighted
IF Frequencies 45mhz
Adjacent Channel Selectivity -73 dB/-65db (WB/NB)
Intermodulation 74 dB
Blocking > 100 dB
Spurious Rejection > 75 dB
Audio Power 3 watts average into 4 Ohms
Audio Signal to Noise > 45 dB / 40 db (WB/NB) unweighted
Conducted Spurious Emission < -80 dBm
Dimensions 29 (H) x 127 (W) x 163 (D) mm
Weight 614 grams