HPT401BT JL UHF Radio Transceiver

JAVAD HPT401BT JL 4W UHF Radio Transceiver

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The HPT401BT JL 4W UHF radio transceiver from JAVAD GNSS provides a high-speed point-to-point and point-to-multipoint wireless data transfer at up to 38.4 kbps, at a maximum range of 16 miles (26 km).



The HPT401BT JL 4W UHF radio transceiver provides a high-speed point-to-point and point-to-multipoint wireless data transfer at up to 38.4 kbps, and offers USB, Ethernet and Wi-Fi/Bluetooth® capabilities.

The HPT404BT JL firmware supports user selectable modulation techniques (GMSK, 4FSK, DBPSK, DQPSK, D8PSK, or D16QAM), which allows the user to achieve the highest data speed for a given range (up to 16 miles/26 km). It also includes a selectable error correction, which improves the functioning of the radio modem under interference. The sophisticated features of the HPT404BT JL include data scrambling, frequency hopping, user selectable transmit output power level, low power consumption sleep modes, auto-scanning for base and plug-and-play installation for remote terminals.

The HPT404BT JL could be a part of local/global network connected to Internet via WiFi, Ethernet, Bluetooth, or 3.5G cellular module (optional). It provides a robust solution linking the field GNSS equipment to RTN, where no cell phone cover is available. The HPT404BT JL can be configured and supported using web-interface through Internet, and this makes the setup mechanism simple and accessible from anywhere in the world.


  • 406–470 MHz UHF frequency range
  • Data speed via UHF channel up to 38400 bps
  • Programmable UHF output power up to 4 W
  • Advanced forward error correction
  • High speed USB 2.0 device port
  • 100 Mb Ethernet port
  • Wi-Fi interface
  • Bluetooth® interface
  • 3.5G cellular module (optional)
  • GPS L1 receiver (optional)
  • WEB interface for remote access and control
  • Serial port configurable as RS-232 or RS-422, or RS-485

Technical Specifications

Operating Frequency Range:406-470 MHz (EU); 406.1-470 MHz (USA); 406.1-430 MHz, 450-470 MHz (Canada)
Channel Bandwith:25/12.5/6.25 kHz (USA for 406-420 MHz); 12.5/6.25 kHz (USA for 421 -470 MHz); 25/12.5/6.25 kHz (Canada); 25/20/12.5 kHz (EU)
Nominal Impedance:50 Ohms
End to End Delay:60 ms
Communication Mode:Time Division Duplex (TDD), Time Division Multiple Access (TDMA)
Maximum Distance Range:16 miles (26 km)
Output Power:USA, Canada: 15 dBm to 36 dBm in 1 dB steps (32mW to 4W); EU: 15 dBm to 33 dBm in 1 dB steps (32mW to 2W)
Output Power Control Accuracy:±1.5dB (at normal test conditions); +2.0dB and -3.0dB (under extreme test conditions)
Carrier Frequency Stability:±1.5 ppm initial stability over temp with ±3.0 ppm aging/year
Max. Frequency Error:±1.0 kHz (at normal test conditions); ±1.5 kHz (under extreme test conditions)
Adjacent Channel Power (Conducted):25/12.5/6.25 kHz CS (USA, Canada) Part §90.210 (C, D, E); 25/20/12.5 kHz CS (EU) Clause 4.2.4 EN 300 113-2 (60 dBc)
Spurious Emission (Conducted):-36 dBm (9 kHz – 1 GHz); -30 dBm (1 GHz – 4 GHz)
Spurious Emission (Radiated):-36 dBm (9 kHz to 1 GHz); -30 dBm (1 GHz to 4 GHz)
GPS Receiver (optional)
Tracking Channels:GPS L1
Signals Tracked:C/A Code
Cold Start:42 seconds
Warm Start:30 seconds
Sensitivity for Reacquisition:– 161dBm
Noise Figure:4 dB
Dynamic Range::-115 to –15 dBm
Max. Input Signal Level:-10 dBm
Power Supply Voltage:+9 to +36 VDC nominal
Power Consumption:18W/2W/0.01W – Transmit/Receive/Sleep (average)
Operating Temperature:-40°C to +70°C
Storage Temperature:-40°C to +85°C
Enclosure:Aluminum, IP67
Dimensions:146 mm x 75 mm x44 mm (5.75 in x 2.95 in x 1.73 in)
Weight:488 g (1.07 lbs)
Housing Color:Two-tone Green/Gray
Antenna Connector:TNC, 50Ω

Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for JAVAD GNSS and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.


The AW435BT 4W UHF radio transceiver from JAVAD GNSS is available through Canal Geomatics. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.