I have never had this big of a problem with a "loud, whining sound" coming from my radio, foot on the gas or off. Car: 2002 Honda Accord, I-4, Auto. Bone stock and all works. EVERYthing is Bonded down to the exhaust pipe. I know how to set a mobile up...I am To the Battery. Everything is grounded. I think my Alt is just loud. NB on the Yaesu 450d will kill in coming but out is still there...Same as with Optima Mk3, 2970n4, and any of 4 outher cb's I have tried. I have snap on beads on all the power to the radios as well.....?