Curious if anyone has had this same phenomenon and/or a solution.
I have a Nagoya UT-72G mag mount on the roof of my Tacoma with a Midland MTX275 micro mobile. The Midland is powered off the dash cigarette lighter plug using the stock cable and plug. When parked, my transmit and receive is quiet and other mobiles on the channel/repeater copy loud and clear. As soon as I get going however, any time a transmission comes in I hear consistent popping and static on RX and when I TX, other mobile
Here you go. It's a DIY filter made from a quick link, wire and a capacitor. There's commercially made units out there as well, probably on Amazon, etc, but I made this one.
http://www.sanantoniohams.org/tips/whine.htm