I will like to know where can I buy a linear amplifier for a CB radio?

Amplifiers on CB are illegal.

First and foremost "Linears" are illegal. But you can purchase them online: http://www.copper.com/cart/index.php?manufacturers_id=28 http://www.copper.com/cart/index.php?manufacturers_id=29 http://www.amateurlinearamplifiers.com./cgi-bin/cart.cgi Remember that the antenna is the most important part of any radio system. Even the best radios can’t make up for a poor antenna. A cheap radio and a good antenna will get your signal out and talk better than an expensive radio with a poor antenna. With that said, get the best antenna you can for your application. Check your SWR reading? What kind of antenna? Where is the antenna mounted? How long is your coax cable? All these are factor into how well you receive and transmit. Also you can go to the following forums and there is a lot of useful info and knowledgable people: http://www.cbradiotalk.com/viewforum.php... http://www.copper.com/cgi-bin/discus4/di... If you have any questions don't hesitate to email me.

Not legal!

The device you are asking about is illegal to own and use. CB's are limited in the amount of power they can broadcast on. If you want more power get a license and use either GMRS or HAM. If you are caught using a linear amp you will lose your equipment as well as pay a fine.