Istalled an older CB. Install went smooth and was very easy. Turned it on and everything sounded fine. Transmitted and it was fine. Next time I turned it on, all channels were blank, and upon transmitting there was a great amount of noise. Almost a screeching. Checked both grounds and they were fine. Checked the power and signal and both looked okay. All butt connecters with no soldering. The only thing I can think of is that it was raining the second time and not the first time. Brand new coax. Any ideas? thank you

 

Wet butt connections?

 

Did you check the antenna VSWR ?