Transmitting corrections using a TDL450B radio

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 R750-000 receiver. This receiver does not have an internal radio.

  • 450 MHz transmit capability to an R750-900 receiver for a mixed fleet of rover receivers.

Connection

The following data cables are included in the TDL450B-HH and TDL450B-HE kits:

  • P/N 130918: Connects to Lemo port (COM1) on the R750 receiver

  • P/N 130927: Connects to USB-A port on a PC

The power cable accessories for the TDL450B 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

Configuration

  1. Configure the TDL450B radio using the front panel and keypad. Refer to the TDL450B documentation.

  2. Use the Siteworks software to configure the R750 receiver as a base station with an external radio. The radio must be correctly configured before connecting to the Siteworks software. The software will locate the radio and then set the R750 COM port. Refer to the Siteworks documentation.

  3. Use the Siteworks sofware, the R750 web interface or front panel to set up the serial port on the receiver to match the radio serial port.

    Radio default port settings: 38400 8/N/1

    If using the receiver web interface to configure the settings: Select I/O Configuration / Port Configuration. Select the Serial 1 / Lemo COM1 option and select EXT-RADIO. Select the Baud field to 38400, and the Parity field to N. See Port Configuration.

    If using the receiver front panel to configure the settings: Briefly press and then . Scroll down to the Serial Ports menu and press . Select the COM1 option and select EXT-RADIO. Select the Baud field to 38400, and the Parity field to N. See Configuration screens.