TDL450B radio

The high-speed wireless Trimble TDL450B UHF data radio broadcasts, repeats and receives data used by Trimble GNSS receivers for real-time correction data. Solve signal strength issues and make adjustments to stay productive, even in the toughest conditions. With advanced wireless Bluetooth communication and rugged design, the TDL450B UHF radio enables easy integration with GNSS receivers, even in harsh environments.

The radio has a user interface designed to offer full control over the radio field setup, and contains useful tools to troubleshoot and optimize your setup.

The TDL450B is a single-band 450 MHz Tx/Rx UHF radio.

An external UHF radio can be used to add:

• UHF transmit capability to an MPS566-000 or MPS566-2-00. These receivers do not have an internal radio.

• 450 MHz transmit capability to an MPS566 900 receiver for a mixed fleet of rover receivers.

Specifications

Frequency range: 403 MHz to 473 MHz (depending on the region; some channels are not allowed)

Over-the-air link rate: 4,800 bps to 19,200 bps

Configurable maximum Tx power: Up to 35 W

Corrections for GNSS receivers: 1 Hz RTK

Environment: IP67 rated

Vibration: MIL-STD-810F

For full specifications, go to geospatial.trimble.com/en/products/hardware/trimble-tdl450b-uhf-radio.

Cables

Radio to PC

• P/N 130927: Connects the radio to a PC:

  

Data cables

The following data cables are included in the TDL450B-HH and TDL450B-HE kits to connect to the GNSS receiver:

• P/N 130916 connects to an SPS986, R780 or R780-2 receiver: Receiver USB 7-pin to RS-232 TDL 5-pin.

  

• P/N 130918 connects to the Lemo port (COM1) on an R750, R750-2, MPS566, MPS566-2 receiver: Receiver RS-232 7-pin to TDL RS-232 5-pin.

  

Power cables

The power cable accessories for the radio are:

• P/N 130919: TDL450B radio SAE power cable

  

• P/N 83223-02: Cable - Power 1.8 m SAE to battery clips

  

• P/N 89073-00: Cable - Splitter 0.25 m SAE to SAE/SAE

  

Connecting the radio and receiver

1. Ensure the receiver has firmware v5.64/6.24 or later installed.

   See Updating a receiver.

2. Connect the TDL450B radio to the receiver by either using a:

   • serial cable.

   • Bluetooth connection.

   Refer to the TDL450B Radio Help - Installation.

Configuring the radio

The radio can be configured by several methods:

• Using the radio front panel and keypad

• Using the Siteworks software, v1.72 or later

• Using the GNSS web interface on the connected Trimble GNSS base receiver, v6.24 or later:

  • Using the GNSS web interface and a serial cable

  • Using the GNSS web interface and a Bluetooth connection

• Using the front panel on the connected Trimble GNSS modular base receiver, v6.24 or later

Using the radio front panel and keypad

1. Configure the radio using the front panel and keypad.

   Refer to the TDL450B Help - Configuring the radio using the keypad and display.

2. On the radio front panel: Enable the Remote Control option in the Device Settings menu to allow the radio to be configured using the GNSS web interface or the Siteworks software.

   Refer to the TDL450B Radio Help - Device Settings.

Using the Siteworks software, v1.72 or later

Use the Siteworks software to configure the receiver as a base station with an external TDL450B radio.

1. On the radio: Ensure the following settings are completed:

   • Remote Control – Enabled.

     Refer to the TDL450B Radio Help - Device Settings.

   • Bluetooth – Enabled and showing Visible as… if using a Bluetooth connection.

     Refer to the TDL450B Radio Help - Advanced Features.

2. Restart the GNSS base station to start the pairing timer when using a Bluetooth connection.

3. In Siteworks: From the Correction method list, select TDL450B and follow the prompts.

Using the GNSS web interface and a serial cable

If you are using a serial cable to connect the GNSS base station to the radio, use the GNSS web interface to configure the following settings:

1. From the I/O Configuration screen, select the Serial 1 / Lemo COM1 option and select EXT-RADIO. Set the Baud and Parity to match the serial port settings of the radio. The default is 38400,N.

   

2. From the I/O Configuration screen, select the Serial 1 / Lemo COM1 and select CMR and then select the required CMR output format from the list. The default is CMRx.

3. Set the receiver to use the external radio. Select Radio / Radio Selection and then select External Radio:

   

4. If necessary, make any changes to the radio settings. Select Radio / Radio Configuration. Changes made in the web interface are updated in the radio.

Using the GNSS web interface and a Bluetooth connection

If using Bluetooth to connect the GNSS base station to the radio, use the GNSS web interface to configure the following settings:

1. From the I/O Configuration screen, select the Bluetooth port connected to the radio and select EXT-RADIO. Set the Baud and Parity to match the serial port settings of the radio. The default is 38400,N.

   

2. From the I/O Configuration screen, select the Bluetooth port connected to the radio, select CMR and then select the required CMR output format from the list. The default is CMRx.

   

   Bandwidth limiting is automated using the external radio management available with the radio.

3. Set the receiver to use the external radio. Select Radio / Radio Selection and then select External Radio:

   

4. If necessary, make any changes to the radio settings. Select Radio / Radio Configuration. Changes made in the web interface are updated in the radio.

Using the front panel on the connected Trimble GNSS modular base receiver, v6.24 or later

Configuring an external radio from the front panel of the GNSS base station is not supported. However, the connection to the radio and the output stream can be configured using the receiver front panel configuration screens for serial ports and output. The radio configuration should be completed using the radio front panel and keypad. See Configuration screens.

More information

Refer to the TDL450B Radio Help.