Uniden - PRO520XL CB Radio with 7W Audio Output - PRO520XL. This Uniden radio is an advanced mobile radio designed for use in the Citizens Band (CB) Radio Service. It will operate on any of the 40 AM frequencies authorized by the Federal Communications Commission (FCC).. This radio features a superheterodyne circuit with PHASE LOCKED LOOP techniques to assure precise frequency control.. Features:. ANL Switch. Compact Size. Full 40 Channel Operation. Instant Channel 9. PA/CB Switch. RF Gain. S/RF Meter.. WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov