Dual Purpose Volume / Channel Selector Knob. The item "Motorola AAM28TRN9RA1AN XPR5550e UHF Two-Way Radio" is in sale since Tuesday, March 9, 2021. This item is in the category "Consumer Electronics\Radio Communication\Walkie Talkies, Two-Way Radios". The seller is "commtech_llc" and is located in Amarillo, Texas. This item can be shipped to United States.