Geoconnect is a specialist GNNS Dealer and offers Rugged Computing and Software Solutions

ULink Rx & TRx

Radio link is critical for GNSS applications as the quality of real-time corrections guarantees reliable data collection and accurate positioning. The new U-Link radios exceed the standard by offering costeffective, high-quality data links:

  • Extended UHF performance
  • Rugged and lightweight transmitter casing
  • High-sensitivity radios
  • Low power consumption
  • IP65 aluminum casingRepeater mode

U-Link Rx
U-Link Rx is a radio receiver covering the band from 410 to 470 MHz with 12.5-kHz channel spacing. It is available as an
embedded radio module in the ProMark 500 GNSS rover and as a built-in board in the ProFlex 500 GNSS receiver.  The new
U-Link Rx is fully compatible with the legacy UHF transmitters.
The U-Link receiver kit includes a radio module and a whip antenna.

U-Link TRx
The U-Link TRx is a radio transmitter/receiver covering the band from from 410 to 470MHz with 12.5-kHz channel spacing. It is fully compatible with the new U-Link Rx, existing 12.5-kHz UHF receivers sold with ProMark 500 and ProFlex 500 GNSS receivers as well as with the legacy UHF receivers.

The U-link TRx is built in a small-size, lightweight and rugged aluminum package (IP 65).
It offers three different levels of output power: 0.5, 2 and 4 W and is available as a repeater when the UHF coverage needs to be extended. U-Link TRx is certified for both Europe and North America.

Cost-effective and High-quality Data Links
Due to a high-sensitivity level on the reception side and the use of state of the art technology available today,
the U-Link radios can achieve an impressive range, equivalent to that of a conventional radio link transmitting
up to 10 times the U-Link TRx output power. This is particularly important in countries with restrictions on
UHF power output.

The new U-Link Rx and TRx radios represent a robust and cost-effective solution that can efficiently support
the most critical GNSS applications. With its small and lightweight rugged transmitter hardware, which
requires lower power consumption and thus smaller batteries, this radio solution is easy to carry and install.
Cost-effective UHF Radio Solution.

Specifications

U-Link Rx

  • Frequency range : 410 to 470 MHz, with factory adjustment of input filter in ±2.5 MHz steps
  • Sensitivity: -114 dBm at 10-5 BER
  • Channel spacing: 12.5 kHz
  • RF link speed: 4800 / 7600 / 9600 bps
  • Modulation: GMSK
  • Two protocols: DSNP or Transparent
  • Serial link speed: 38400 bps
  • Serial link: RS232

Configuration Tool

  • Proprietary radio configuration software used to set channels – Up to 16 channels saved in the radio

Power Characteristics

  • DC input voltage: 5,5 to 9V
  • Power consumption: <700 mW

Physical Characteristics

  • Size: 76x65x20 mm
  • Weight: 50 grams

Environmental Characteristics

  • Full performance over -20°C to +55°C
  • Extended temperature range over -30°C to +70°C
  • CE , FCC and IC marked
  • EN300-113 certified

U-Link TRx

  • Frequency range: 410 to 470 MHz, with factory adjustment of input filter in ±2.5 MHz steps
  • Channel spacing: 12.5 kHz
  • RF link speed: 4800 / 7600 / 9600 bps
  • Modulation: GMSK
  • Two protocols: DSNP or Transparent
  • Two operating modes (specified on order entry):
    • Transmitter (connected to a base receiver)
    • Repeater (used as a standalone unit to extend the radio range)
  • Serial link speed: 38400 bps
  • Serial link: RS422/RS232 (RS422 by default)
  • Adjacent channel power: >60dBc
  • RF connector: TNC
  • 2 transmitter status LEDs (Type of RS connection, data transfer, repeater mode)

Configuration Tool

  • Proprietary radio configuration software used to set channels and output power
    • Up to 16 channels saved in the radio
    • Radio output power : 0.5W / 2W or 4W

Power Characteristics

  • DC input voltage: 9 to 28V
  • Power consumption: 1.5A/12V at 4W RF

Physical Characteristics

  • Size: 150x105x48 mm
  • Weight: 660 grams

Environmental Characteristics

  • IP65
  • Full performance over -20°C to +55°C
  • Extended temperature range over -30°C to +55°C
  • CE , FCC and IC marked
  • EN300-113 certified
  • Shock: ETS300019 – 0107
  • Vibrations: MIL-STD 810F
Icon of U Link Brochure U Link Brochure (1.2 MiB)