Cobra29 and amp problem

I have a Cobra29 NW Classic in my truck that works great . When I hook up a
kl203P 100w amp and hit the RX button all goes quiet when it should really boost reception. I tried the amp in the house and it works perfect. I’m running the amp straight from the battery too. Any ideas?

Amplifiers are illegal on CB. As such this thread violates the 5th rule of the forums. Discussion of any topic violative of the law isn’t allowed. I’ve posted the rules for your convenience. I’m closing this thread.

Thanks for visiting our forum! This message board is operated by the staff of We only have a few simple rules:

  1. Do not post links to other web sites that sell similar products. This includes ebay auctions.

  2. Do not list products that you have for sale on this forum.

  3. Profanity is not allowed.

  4. Do not post spam messages.

  5. Do not post any messages that are condescending, insulting, obscene, rude, vulgar, sexually-oriented, hateful, threatening, or otherwise violative of any laws.

  6. The owners of reserve the right to remove, edit, move or close any thread for any reason.

  7. Your forum name should not include domain information (.net, .com, etc…) or be a partial URL or email address.

Although the administrators and moderators of will attempt to keep all objectionable messages off this forum, it is impossible for us to review all messages. All messages express the views of the author, and the owners of will not be held responsible for the content of any message. The owners of reserve the right to ban any member for misconduct including excessive rules violations, threatening post, trolling or promoting illegal activity.