Tenq&reg; Mini Frequency Counter Signal Tester for Two Way Radio 8m Uhf 5m Vhf 50mhz to 2.4ghz Portable Radio Portable Radio Frequency Counter TENQ GY560 Y001 50MHz-2.4GHz Digital LCD Frequency Counter for Two-Way Radio 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.