Also in a trailer home. But it's bricked in so it doesn't blow away with the high winds in this region. Power is generally sub-par for these things. I've addressed it by using mostly a laptop and battery powered preamps and field recorders. But not the only solution. Analog audio gear is sensitive to many things. Clean power of the pure sine wave (inverter) variety is almost required. And probably not supplied. Running the gear on batteries (like me) solves that issue on the cheap. Plus if you do event stuff you generally don't have access to power, or if you do, it could be pretty awful / failure prone / worse than what you have at home.
A UPS or other things could help, but generally don't do the pure sine wave thing. Power conditioners and other things. Stuff that you generally don't need, until you need it. A noisegate is meant more for broadcasting. It takes away the noise floor of the gear when there's a lull in the content. This keeps a radio station from sounding AM-ish, and also helps with data compression. It might be something that you want eventually, but probably not what you need to solve your issue.