# RB5 mainboard RF antennas

Source: [https://docs.qualcomm.com/doc/80-88500-5/topic/rb5_mainboard_rf_antennas.html](https://docs.qualcomm.com/doc/80-88500-5/topic/rb5_mainboard_rf_antennas.html)

RB5 uses two dual-band, 2.4/5 GHz, WLAN/Bluetooth technology antennas on the mainboard.

- To avoid detuning the antennas, use nylon standoffs for mounting holes and check that there is no metal directly above or below the antennas.
- QCA639x supports 2 × 2 MIMO with 2x Wi-Fi antenna ports and 1x
        Bluetooth technology antenna port (Bluetooth technology antenna can be dedicated or shared
        with one of the Wi-Fi antennas).
- Current system-on-module uses a shared Wi-Fi/Bluetooth technology approach on RF chain 0.
- System-on-module has the option to route RF signals through the board-to-board connector to the mainboard to eliminate the need for external coaxial cables (current configuration).

A resistor change on the SoM allows you to plug in dual-external antennas on the SoM by using industry standard MHF-4 coax connectors (move resistor R3311 to R3310 and move resistor R3313 to R3312).

Figure : Dual-band RF antennas
      
      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**Parent Topic:** [RB5 mainboard](https://docs.qualcomm.com/doc/80-88500-5/topic/rb5_mainboard.html)

Last Published: Nov 25, 2025

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Thermal management](https://docs.qualcomm.com/bundle/publicresource/80-88500-5/topics/thermal_management.md)