Radio Configuration

Select Radio / Radio Configuration.

 

Parameters for all radios

Turn On/Off Radio – Switches the radio on/off.

900 MHz Radio parameters

Country Code Management - This menu is available if the receiver does not have the Base Station transmitting mode installed. It affects the receive-only capabilities. The options are:

  • Australia

  • United States

  • New Zealand

General Configuration Management – Set up the following fields:

  • Radio Mode – Set the internal radio to transmit, receive, or to be used as a repeater.

  • Network ID – Enter the Network number for a 900 MHz radio. The Network ID can be from 1 through 40.

The SPS Modular receiver internal 900 MHz radios use the Easy IP (Construction) protocol to transmit satellite correction data. The SPS Modular base receivers can be used with other 900 MHz rover radios, such as the SNB900 radio-modem, running current firmware. If you use repeaters on a site, then these also must be Easy IP compatible, such as the SNB900 radio-modem.

When a SPS Modular base station receiver with an internal 900 MHz radio is being used with an external 900 MHz radio (for example, a SNB900 radio-modem) in two-way data applications, ensure that the internal radio of the base station is either set to a different network than the external radio or turned to Receive mode.

450 MHz Radio parameters

Country Code Management – Indicates the country configuration.

This menu is available if the receiver does not have Base Station transmitting mode installed. It affects the receive-only capabilities. The options are:

Changing the Country Code setting will alter the Wireless Model options available.

Channel Bandwidth Management – Set the Channel Spacing (kHz). The options are 25 or 12.5 kHz. However, the firmware makes logical choices depending on the country code. Contact your Trimble dealer if this needs changing. The base and rover receivers must have the same country code selected.

General Configuration Management – Set up the following fields:

  • Radio Mode – Set the internal radio to transmit, receive, or repeat if a receiver is a rover only or base only.

  • Current Channel (MHz) – Select the current channel for the internal radio to operate on.

  • Wireless Mode – Select the current wireless mode for the internal radio.

    If the receiver has an 403 - 473 MHz internal radio, then there are advanced features available:
    On sites where the base radio is a SATEL 450 MHz model, the rover receiver can receive messages with the SATEL format. To help understand the SATEL format on the base radio, the SATEL radio menu terms are:

    • ‘Error corr.’ means FEC Forward Error Correction

    • ‘Error Check’ means a checksum is added to the base messages Base. For use with SPS GNSS rover radios, turn this off at the base radio.

    • SATEL AutoRx means the firmware auto resolves the setting On or Off for SATEL EC, SATEL CRC16 and Whitening.

    • SATEL CRC16 - 16 bit Cyclic Redundancy Check that can be set to On or Off at the SATEL base radio.

    • Whitening is a general term for scrambling.

    On sites where the base radio is transmitting the Pacific Crest (Trimble) “PCC Transparent EOT” format, determine what over-the-air data rate is set to (4800, etc), whether FEC is on or off, and whether Scrambling is on or off. Then, select the correct mode in the receiver as shown. In less common cases, the PCC FST format might be set on the Pacific Crest (Trimble) base radio.

    The Siteworks software or version 3.30 and later of the SCS900 software will search through and try the various advanced formats if it is not previously selected in the SPS GNSS receiver.

  • Channel sharing Mode – For base mode only. Select one of the following:

    • Off – The carrier detect mode is OFF. The receiver ignores other transmissions on your frequency and continues to transmit data. Latitude is in degrees, minutes, and seconds.

      Channel Sharing set to Off may be illegal in your country-of-use. You may be subject to penalties or fines dependent upon the specific licensing requirements for your country-of-use. Please consult your radio license documentation or licensing agency for operational guidelines.

    • Avoid Weak Signals – The carrier detect mode is ON. If the radio detects another radio transmission on its frequency, it stops transmitting. When the channel is free of radio traffic, the radio resumes transmission. This is the recommended setting.

    • Avoid Strong Signals – The carrier detect mode is ON, but the radio will only stop transmitting when there is a strong signal present. Receive level greater than -90 dB.

  • Enable call sign – This is a Federal Communications Commission (FCC) requirement for USA licensed users. This sets your radio to transmit your call sign in Morse code every 15 minutes.

Receive-only Channel Management – Add or delete radio frequencies.

The ability to add or delete 450 MHz UHF radio frequencies only applies to Receive frequencies. If new frequencies are required, contact your Trimble dealer.

  • Frequency Range (MHz) – Identifies the frequency range that the internal radio operates in.

  • Add Channel – Enter a valid frequency that the local base station is transmitting in, which meets the rules bounded by the available frequencies for the radio and the value in the Tuning Step field. When a frequency is added, the value in the Current Number Used field increments.

  • Delete Channel – Select a receive frequency from the list to remove it.