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Trimble HPB450 450 - 470 MHz High Power Base

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Trimble HPB450 High Powered Base
- 450-470 MHz Radio Frequency
Item ID: X3290-L/T*
Condition: Refurbished
Warranty: 90 Day Exchange


* Trimble HPB450 High Powered Base [ID- X3290-L/T*]
          - 450-470 MHz Radio Frequency


Trimble HPB450 Specs
The Trimble® HPB450 radio modem is a powerful and rugged 450 MHz radio specifically designed for GPS surveying systems.

EXTREMELY long range and high power
The HPB450 offers high or low power broadcast of GPS correction data. With its high power output of 35 W, the HPB450 is the most powerful radio of its type available, maximizing the achievable range. With a fast over-the-air data rate, the HPB450 also offers reduced latency for improved GPS positioning information.

Intelligent protocols and Autobase technology
Unique AutoBase™ technology in the HPB450 radio offers the convenience of automatic channel scanning; the radio scans through all available channels and then returns to the best one for transmission

Broadcast range and noise immunity are also significantly enhanced via the HPB450 radio’s forward error correction (FEC).

Seamless integration with Trimble GPS systems
The HPB450 radio is designed to compliment and fit seamlessly into new and existing Trimble GPS surveying systems. As such, it is built to the same standards of ruggedness, reliability, and suitability for the field as other Trimble products. It is lightweight and consumes minimal power for longer field operation, and you can rely on the radio to perform in the field day after day, whatever the conditions. With its built-in mounts the radio can be mounted on any tripod.

The HPB450 is also easy to use, with a user interface that includes a channel display, LEDs to indicate system status, and on/off control. Configuring the radio is also possible using your Trimble field software or supplied PC software.

  • The surveying industry’s most powerful radio for GPS base stations
  • Rugged and reliable whatever the conditions
  • Intelligent and easy to use
  • Compatible with any GPS surveying system

  • “Auto Power On” feature
  • Rugged construction withstands harsh job site conditions
  • Designed for use with Trimble internal 450 MHz radios
  • Built-in channel selector
  • 4800, 9600, 19,2001 over-the-air baud rates
  • 20 MHz splits
DTE-DCE interface 3-wire, RS-232, 38,400 baud maximum
User interface Auto Power On, on/off button, channel button with AutoBase and AutoRover™, digital display, modem/power status indicators, RF power select toggle switch
External 9–16 V DC
Internal battery NA
During TX (nominal) 110 W (35 W)
During RX (nominal) 1.9 W
External 50 Ω, BNC
Link rate/modulation 19,200 bps/4 level FSK (25 kHz)1
9600 bps/4 level FSK (12.5 kHz)1
9600 bps/GMSK (25 kHz)
4800 bps/GMSK (12.5 kHz)
Link protocols Transparent, packet switched, digipeater, TRIMTALK™
Forward error correction (FEC) Hamming code (12, 8) with data interleaving
Frequency bands 410–430 MHz, 430–450 MHz or 450–470 MHz (only one band per radio)
Frequency controls Synthesized 12.5 kHz resolution, ±2.5 ppm stability
RF power select Low/high
RF transmitter output 3/35 W
Sensitivity –110 dBm BER 10–5
Adjacent channel selectivity >60 dB (25 kHz), >50 dB (12.5 kHz)
Type certification All models are type accepted and certified for operation in the U.S.A. and Canada. For detailed information concerning your country’s type certification, please contact your local Trimble Authorized Distribution Partner
Operating temperature –30 °C to +60 °C (–22 °F to +140 °F)
Storage temperature –55 °C to +85 °C (–67 °F to +185 °F)
Vibration/shock ANSI/ASAE EP455
Enclosure IEC 144/855420 IP66 watertight and dustproof
Dimensions (WxHxL) 15.8 cm x 7.0 cm x 16.7 cm (6.23 in x 2.77 in x 6.58 in)
Weight 1.34 kg (2.96 lb)
Data/power connector 5-pin LEMO #1 shell
Mount Tripod bracket