JiYKR Jk-560S Walkie Talkie Frequency Counter For Baofeng Portable Radios decoder 100-520mhz his frequency counter can continually test the analog radio signal (handhold radio、wireless phone、 etc ) and digital radio signal、 to display the frequency parameter with the signal strength.This is the best tools for the signal testing and radio maintenance.Frequency step : 200K (digital radio signal)、 1K、 100Hz.- Testing distance : UHF : 8m、 VHF : 5m.- Testing range : 100-520MHZ- Antenna : pulling out antenna- Battery : 9V 6F22- Auto power off time : 1 mins. (except for the digital signal gear)- Operation : the only one button with all functions.Mini frequency counterThe said frequency counter can continually test the analog radio signal (handhold radio、 wireless phone、 etc) and digital radio signal、 to display the frequency parameter with the signal strength. This is the best tools for the signal testing and radio maintenance.Frequency step : 200k (digital radio signal)、 1k、 100Hz.Testing distance: UHF: 8m、 VHF: 5m.Testing range: 100-520MHZAntenna: pulling out antennaBattery: 9V 6F22Auto power off time: 2 mins. (except for the digital signal gear)Operation: the only one button with all functions.the 1st pressing to turn onwelcoming¡ª¡ªrelease the button return to powering off mode|¡ª¡ªcontinually pressingto choose the 200k step¡ªrelease button 、 200k mode for digital radio|¡ª¡ªcontinually pressingto choose the 1k step -- release button 、 1k mode for faster testing|¡ª¡ªcontinually pressingto choose the 100Hz step ¨C release button、 100Hz mode for accurate testing¡ª¡ªcontinually pressingturned on (1k or 100Hz mode) turned on (200k mode)|press quickly and release normal pressingto lock the screen display ¡°Bye Bye¡±press quickly again and release release the button、 then power off.unlock the screencontinually pressing for 2 sec or moredisplay ¡°Bye Bye¡±release the button、 then power off.