Gateway connection problems are related to power

 Update. I installed a Cyberpower UPS. General improvement, but still dropped signals (requiring logging back on to the gateway) and "blinks" (no data coming in, Speedtest won't work), but data comes back after a few minutes without losing gateway connection. 

 I then rigged up a muffin fan to blow air up from the bottom. I had measured up to 156 degrees with IR thermometer down through the top vent, now under 130, although the case is barely warm to the touch. I can't imagine what it would be in the summer when my porch is in the 90s! 

 Now I have pretty reliable connection with only occasional blinks. I'm getting consistent 200 - 400 mbps.

 I'm going to try rotating it to see if I can tweak my connection and speed. What is the best metric to measure signal strength, RSSI(currently -72)? 

 If there was any other service here, I would have switched by now. Now to get additional refund for lost service.