Telemetry Interfaces

We offer a variety of telemetry modules for use with the VBOX range. Each module contains a high power radio modem capable of transmitting and receiving RS232 serial data. As an alternative to using a hard-wired serial connection a Bluetooth module can be used to transmit data between the VBOX and a Laptop PC.

Radio Options


There are a variety of telemetry systems available, employing a range of frequencies. Which version is used depends on the range over which they need to be employed, and local radio licensing regulations. For advice as to the most suitable type for your application it is best to contact us to discuss your requirements.

Each radio is supplied with a magnetic mounting antenna, and is connected simply to the VBOX via one cable.

RACELOGIC radios are used for three main purposes:

Transmit and receive differential correction information (DGPS) from a RACELOGIC Base Station for local position correction.

Transmit 'ADAS' data between 2-4 VBOX units, for live vehicle separation measurement.

Transmit VBOX serial data from a remote unit to a laptop PC at a maximum rate of 20 Hz.

400 MHz Radios

The 400 MHz radios can be set to transmit and receive data between 403 and 470 MHz. The variable frequency and power of these radios makes them accepted in many countries. Please check local RF licensing regulations.

With a typical max. range of 10km (at 500 mW), the radios can be used with a Base Station to provide DGPS corrections to a VBOX.

Racelogic supply a special version of this radio for China and Korea. Please contact your distributor for further information.

Transmission Range*

  • Difficult environment (e.g. buildings, reinforced concrete): 1-2km (max. 6,561 ft)
  • Open environment with antennas at ground level (e.g. vehicle roofs): 3-5km (max. 16,404 ft)
  • In view with Base Station antennas at height (e.g. building roof): 6-10km (max. 32,808 ft)

869 MHz Radios

The 869 MHz radios can be used throughout Europe and have a max range of 3500 m. The radios can be used with a Base Station to provide DGPS corrections to a VBOX.

The Base Station variant (RLVBRTM869BS) is designed to connect to the Racelogic Base Station and transmit DGPS corrections to a remote VBOX.

The VBOX variant (RLVBRTM869RV) is designed to connect to a VBOX to receive DGPS corrections from a Base Station.

Transmission Range*

  • Difficult environment (e.g. buildings, reinforced concrete): 400 m (1,300 Feet)
  • Open environment with antennas at ground level (e.g. vehicle roofs): 1000 m (3,200 Feet)
  • In view with Base Station antenna at height (e.g. building roof): 5,000 m (16,400 Feet)

915 MHz Radios

The 915 MHz radios can be used in the USA, Brazil and Australia and have a max range of 3500 m. The radios can be used with a Base Station to provide DGPS corrections to a VBOX.

The Base Station variant (RLRTM915V2BS) is designed to connect to the Racelogic Base Station and transmit DGPS corrections to a remote VBOX.

The VBOX variant (RLRTM915V2RV) is designed to connect to a VBOX to receive DGPS corrections from a Base Station.

Transmission Range*

  • Difficult environment (e.g. buildings, reinforced concrete): 300 m (1,000 Feet)
  • Open environment with antennas at ground level (e.g. vehicle roofs): 700 m (2,300 Feet)
  • In view with Base Station antenna at height (e.g. building roof): 3,500 m (11,000 Feet)

2.4 GHz Radios

The 2.4 GHz range can be used in most countries. Depending on the power output, the radios have a max. range of 2400 m or 4000 m and can be used with a Base Station to provide DGPS corrections to a VBOX.

2.4G Hz radios can be used to provide the link between two or more VBOX units at a range of 600m, which is used for ADAS testing where measurement of vehicle separation is required.

It can also be used to transmit VBOX serial data from a remote unit to a laptop PC at a maximum rate of 20 Hz.

All 2.4 GHz radios are available with a transmission power of 50 mW or 125 mW. Please establish which output power is permitted in your country.

Transmission Range*

  • Difficult Environment (e. g. buildings, reinforced concrete):
    125 mW (e.g. USA, Canada, Russia, China): 200 m (600 feet)
    50 mW (Japan): 120m (400 feet)
  • Open environment with antennas ground level (e.g. vehicle roofs):
    125 mW (e.g. USA, Canada, Russia, China): 500m (1300 feet)
    50 mW (Japan): 400m (800 feet)
    10 mW (EU): 400m (800 feet)
  • In view with Base Station antenna at height (e.g. building roof):
    125 mW (e.g. USA, Canada, Russia, China): 4000m (13,000 feet)
    50 mW (Japan): 2400m (8000 feet)
    10 mW (EU): 2400m (8000 feet)

*Please note: Obstacles such as walls and trees can strongly reduce the range.

Bluetooth Options


The VBOX Bluetooth module (RLVBBT01) is a general purpose Bluetooth adapter, designed as an alternative to using a hard-wired serial connection between the VBOX and a Laptop PC equipped with a Bluetooth interface.

The Bluetooth module has a range of up to 30 m, allowing the user to place the VBOX in a safe, dry and convenient location and facilitating the free use of a laptop, either by hand or mounted, without any cabling restrictions.

The RLVBBT01 offers high speed serial communications at 115 K baud rate, ensuring full data capture and transfer. It has minimal power consumption, resulting in insignificant drain on the VBOX power source – particularly useful when using a VBOX battery pack, in addition to 13 standard GPS channels.

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