No, and it's actually illegal to do. CB radios come from the factory transmitting four watts, which is the legal limit.
No. Not only is it illegal to amplify a CB radio beyond the FCC permitted four watts, but stereo amplifiers and linear amplifiers work in very different ways.
Yes, many people in the word still use a CB radio. Truck drivers use CB radios each day.
You don't. Linear amplifiers are illegal for CB use. The maximum input into the final stage of a CB transmitter is 5 watts.
Public service agencies don't use CB radio for official communication.
(In the United States) you do not need a license to own a HAM radio. You may Listen to communications on a HAM radio without a license. However, you may NOT transmit on a HAM radio without a license.
A mobile CB radio.
No! CB power amps are very unlawful, and they can interfere with legal radio communications. (Like Amateur Radio)
There aren't any laws prohibiting installation of CB radios in vehicles, and you don't need a special license to operate a CB station. CB radio rules are under the jurisdiction of the FCC.
Then your radio probably isn't grounded properly.
No, the cb radio only works on the citizens band, aircraft use licensed private frequencies or faa regulated ones.
You don't. It won't work.
The whine probably comes from the alternator. You will need a supressor on the alternator output. Another way, is to use an in line filter in the power supply, to the CB, to stop interference on the power supply from reaching the radio. You need an auto shop to check the alternator. The in line filters can be got from radio Shack and look like an in line fuse.