I have one and I love it! After I put a fan on top of it, have it turn on with the AMP while using LMR240 coaxial with an sirio antenna with SWRs set at below 1.5 while using common mode choke a foot from the antenna I am able to comfortably talk skip all day long. The coaxial ground is directly bonded to the car body. There's also a low pass filter between the radio and the amp and another low pass filter after the amp.