RK-560 Walkie Talkie Handheld Portable Digital CTCSS DCS Frequency Counter Meter Tester 50MHz-2.4GHz Frequency step : 200K (digital radio signal), 1K, 100Hz. Testing distance : UHF : 8m, VHF : 5m. Testing range : 50 MHz ~ 2.4 GHz. Operation : the only one button with all functions. Dimensions: 9.4cm * 5.7cm* 2.3cm / 3.7" *2.2" * 0.9" With collapsible whip antenna