[Antenna static?]

okay, thank you, I try to test with a known close signal. Appreciate the feedback. 

RickH

[Antenna static?]

Thanks for the quick response, I'd think it could be "picket fencing", but when I pull the car to a stop it clears up. As for the thin cable, this radio did not come with antenna or mount/cable, I purchased the MXTA12 ANTENNA MAG MOUNT (all equipment is just over a year old). I'll check the set screws on the length adjustment, they seemed tight by hand, but I'll put a wrench to them. Does this antenna have a coil in the base that could be compromised? Thanks again for the feedback! 

 Description:

Magnetic mount. For use with MicroMobile antennas.
Includes rubber boot.
Specific Frequency: 0 - 1000 MHz
Mount Diameter: 3.5 in
Cable Length: 6 meter
Cable Type: RG-58A/U
Color: Silver

[Antenna static?]

MXT400 MICROMOBILE: Static (broken reception) while moving, goes away when stopped (motor running). MXTA26 6DB GAIN WHIP ANTENNA, magnet base roof mount, MXTA12 ANTENNA MAG MOUNT. Ideas on what could cause that? Connections are tight..