Picking up cb radio through my door speakers, WTF

[Black Truck 10 10+ year member]

So to add to my already weird day, I was driving with my deck turned down to 0 and I was at a stoplight, and I was picking up a 18 wheeler's cb radio as he was talking. I couldnt hear messages incoming, just messages he was sending out.

I dont have a cb/ham antenna, and my deck was set for my CD not my Radio.

No other easy way to say this but WTF?

I have a steady high pitch buzz already in my system, but it doesnt increase as I accelerate.When my rpms are lowest its the highest pitch, and when I accelerate it actually goes down. At the stoplight I was obviously at 0 speed. I had the buzz nice and loud, but why did I pick up the truckers radio, and how do I prevent it?

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[GreenBook 10+ year member]

Do your door speakers run off an amp, or the headunit?

Either way I wouldn't worry about it too much unless it happens again, it sounds like a freak occurance where the frequency he was broadcasting on somehow got picked up by rca's. shielding would fix that. If you don't have rca's for those speakers i'd look at the antenna cable, but there is no realistic way to test something like that without a c/b.

 

[CRXBMPN 5,000+ posts]

idk about the cb, but when i used to have a low rpm hiss it would go away as my rpm's went up b/c the sub amp would filter out the higher frequency hiss... it was odd, the higher the rpm's the higher the frequency of the hiss...

 

[Black Truck 10 10+ year member]

The door speakers are run off my Sundown 100.4. My rca's are all from knukoncepts and shielded which further explains my wondering. I am worried because could this be a reverse thing and they can hear my on my cell phone or anything like that. I just dont like things like this happening. haha I dont like things unusual. But how could I pick up those signals is whats got my curious?

Also what do yall thing that hissing is? I have solid grounds, and my headunit is Alpine CDA-7995. Not a Pioneer.