RTK External Radio | Wireless UHF Radio

Overview

The Harxon HX-DU1603D is a compact UHF external radio transceiver designed for mobile wireless data communication in demanding field environments. Operating in the 410–470 MHz UHF band with 12.5 / 25 kHz selectable channel spacing, it delivers stable data links, strong receiving performance, and reliable anti-interference capability.

Featuring a low-power design, OLED display, and menu-based operation, the HX-DU1603D enables fast on-site configuration and efficient integration with GNSS, RTK, surveying, and industrial wireless data systems. Interference detection and remote control support further enhance performance in complex RF environments.

Key Features

Compatible with Mainstream Radio Protocols

HX-DU1603D is compatible with mainstream radio protocols on the market, including Trans EOT, TrimTalk450S, TrimMark3, SATEL, and other industrial manufacturer’s radio protocols.

Support Multi-mode Data Transmit

HX-DU1603D supports RS232 serial port and Bluetooth wireless technology for data transmission. It can be integrated into outdoor base station as external radio and provide convenience for surveyors.

OLED Display for Radio Operation Configuration

HX-DU1603D enables users to easily set up radio parameters or inquire radio status via local display. Users could set and switch serial port baud rate and channels without reaching a computer or other terminals.

Versatile Features with Reliable Performance

This small, lightweight radio provides reliable operation with sophisticated features as compact single board structure, high/low power switching, serial port baud rate switching, air baud rate switching, starting-up status identification, interference detection and remote control.

Parameters

General Specification

Frequency Range

410-470MHz

Channel Spacing

25KHz/12.5KHz

Operating Mode

Half-duplex

Modulation Type

GMSK/4FSK

Channels

36(programmable)

Operation Voltage

9~36V

Power Consumption(typical)

High power 7.5W@12V DC
Low Power 4.0W@12V DC
Standby 1.2W@12V DC

Frequency Stability

≤±1.0ppm

Structural Specification

Size

147.6L×83W×31.5H mm

Weight

Approx. 612g

Antenna Interface

TNC Female

Antenna Interface Impedance

50ohm

Data Interface

LEMO 5pin

Modem

Air Baud Rate

9600bps / 19200bps

Serial Port Baud

9600bps / 19200bps
38400bps / 115200bps

Transmitter

RF Output Power

410~470MHz
High Power（2.0W） 33.5±1.0dBm@DC 12V
Low Power (0.5W) 27.5±1.0dBm@DC 12V

Power Stability

±1dB

Adjacent Channel Power

>50dB@25KHz

Receiver

Sensitivity

-115dBm@BER 10-5，9600bps

Co-channel Rejection

>-12dB

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RTK External Radio | Wireless UHF Radio - Harxon