Hello, and happy new years.
I own a Midland MXT275 and have been experiencing issues with the receiver. After a lot of searching over the last year I have found this problem to the extreme which I am experiencing is rarely seen but it does exist. For some radios, the picket fencing while moving at any speed renders the radio unintelligible for any channel including WX frequencies. I have changed my terrain, surroundings, speed, antenna, cables, vehicle, and did a side-by-side comparison with another midland handheld and did not have this problem. The radio may be defective but Midland has said they will not replace it as I had another defective one replaced as it would not Tx.
Long story short, I cracked the radio open today and saw this interesting screw that looks like a potentiometer in the circuitry. I am not an electrical engineer, but have a primordial understanding of electronics however I lack the in-depth knowledge and tools to properly figure out what this thing does and if perhaps it contributes to my problem.
This is a last resort attempt at salvaging this radio. Any insight is apreciated!