[Tom Line]

That is symptomatic of several potential problems.

You may be browning out your radio if it is not connected to power correctly. Make sure the 12 to 5 volt stepdown is plugged in per the FIRST control guidelines into the regulated 12V, and not one of the normal breakered 12 volt outputs.

You may be tripping the breakers that power one or both sides. If both sides stop working at the same time, however, this is probably not the problem. If you only lose 1 side, and it is for 3-4 seconds, then you are probably tripping the breakers that power the victors on that side. Check for mechanical bind (have you greased your transmissions lately?).

There is always the chance that you have a bad battery. Have you charged your batteries, and checked this behavior with more than one? A bad battery can cause loss of communiation.

What does the portion of the driver station on the left say is happening? Is it staying at Teleoperated Enabled, or is it changing to something else like no communication?