Rtk torch: is there a method to restart LoRa

I am using two rtk torches.

They have the latest firmware as of this post (v3.3 firmware, stm32 v2.02, and latest for un980).

I have one torch in base mode with LoRa on, and the other in rover mode with LoRa on.

After about 1.5-1.75 hrs of operation, the base stops broadcasting over LoRa.

Is that normal?

I don’t believe so - I wonder if the rover near the practical limits of LoRa, or losing signal due to interference?

Are they stationary when the disconnect happens?

Yes, they are both stationary.