No sound from cb when key is in the on position but when i start my vehicle all i hear is engine noise and it gets louder when i am driving or rev it up?
It's not grounded good. Also, make sure your battery to the vehicle is grounded good to the frame. Check that your CB is hooked into an accessory power switch, in other words one that provides power when the key is on but vehicle hasn't been started yet.
SOURCE: noise on cb when truck is running
im installing a in line noise filter on my power to the battery this might help too
SOURCE: lots of engine noise
It sounds like you have a problem with alternator noise interfering with your receive signal. You can check your local truckstops for an interference filter, these run about $15 and wire directly to the hot and ground wires respecively behind your cb. Or you can make one yourself.
To make one yourself, go to your auto parts store and buy a condensor...the kind that goes on the older automobiles. Find a body ground on your vehicle and hook the groundwire to this (you'll need enough extension wire of the same gauge to make the trip from the condensor to the selected body ground point), then hook the hotwire to the hot power wire coming to the radio.
If a girl like me can figure this out and do it, I'm sure you can do it too. There's really nothing to it.
SOURCE: cb transmit noise
Its just RF feed back, that's normal, try to re-route the coax, or just turn the FM down, o try turning your modulation down....hope this was helpful....
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