Can you recommend a Nordic device for me which supports BLE and sub-1 GHz RF?

[Nordicfan123]

Hi, basically I want to use the sub-1 GHz RF to implement time sync, does Nordic have such a product that supports concurrent BLE and sub-1 GHz RF?(maybe an SoC)

[AmbystomaLabs]

Not sure I understand your question.  BLE uses the 2.4GHz transceiver (ie, radio, modem, etc.) on the nRF.

If you are just using BLE to do time sync follow the Nordic method. There is normally one master in a time sync scenario. So just repeat the process to sync all your devices.