Uniden PRO501HH Handheld CB Radio [PRO501HH]PRO501HH Handheld CB Radio The Uniden PRO501HH has all the features users need. 40 CB channels let the user tune in to the action channels. NOAA weather alerts keep users informed of severe weather conditions, and the Dual Watch feature lets users talk on one channel while listening in on another. Use the high power setting to send out the strongest signal, or switch to low power to preserve batteries. There is also a backlight on off switch and a key