I have a Midland MXT 275 in a vehicle that is excellent. I have used the scan feature in the past with no problems. Sometime before Christmas, 2022, noise would occasionally trip the squelch. Now the problem has gotten MUCH worse. Increasing the squelch, mostly eliminates the problem, BUT it also blocks most transmissions. I have tried ALL the Midland antennas, from their 6db one, to their others, with no change.
I also have an MXT400 & 500 as base station radios. They don’t have the problem at the house, but all utility power lines, are underground!
Driving around town, I’m wondering if the utility company may have a fault that is causing this interference, but ONLY on GMRS ch 18?
Any thoughts or comments are most welcome.