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freecell, so, you are saying that anyone who has an amp in their car that has the negative lead connected to the vehicle body, and has a coaxial cable going out to the antenna that is also mounted to the vehicle body has a ground loop?


i dont see any way around this.

please post a solution, i would like to learn more about this.

applying the solution to my specific installation would be very helpful.

thanks.




booty monster,

i placed the SWR meter after the low pass filter.

the amp puts out harmonics, like all cb amps, the antenna is only resonant to the 27mhz signal and therefore the harmonics of the amp cause the SWR to be high.

put in a low pass filter to eliminate the harmonics, and bam, SWR go down.


i make all my own cables, and i am darn good at soldering the ends. been doing it a long time. the cables are good.

thanks for the input.


LC