Radio problem in 09' Tacoma Prerunner

I had recently bought an 09' Tacoma V6 Prerunner SR5 access cab and I quickly noticed that the sound of the radio turned fuzzy and then back to normal repeatedly. I was wondering if anyone knew why this was happening and if it is easy fix. I'm 16 and learning, so please explain well. thank you.

 

There was a TSB about this a few years ago.My head unit was replaced under warranty

 

I had just bought the truck used and has no warranty. Any suggestions?

 

www.Crutchfield.com, and replace the radio with an aftermarket one. They will give you the dash kit, wiring harness and instructions. It is not hard.

I had mine replaced twice under warranty and then went the aftermarket route.

 

Thanks for the website.