This 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. It must be the best tool for the signal testing and radio maintenance. Specifications: 1. Frequency step : 200K (digital radio signal), 1K, 100Hz. 2. Testing distance : UHF : 8m, VHF : 5m. 3. Testing range : 50 MHz ~ 2.4 GHz 4. Antenna : pulling out antenna 5. Battery : 9V 6F22 6. Auto power off time : 1 mins. (except for the digital signal gear) 7. Operation : the only one button with all functions How to use: 1. The only one button with all functions. 2. Welcoming--release the button return to powering off mode - ***continually pressing 3. To choose the 200k step-release button , 200k mode for digital radio - ****continually pressing 4. To choose the 1k step -- release button , 1k mode for faster testing - ****continually pressing 5. To choose the 100Hz step - release button, 100Hz mode for accurate testing - *****continually pressing 6. Turned on (1k or 100Hz mode) turned on (200k mode)| 7. Press quickly and release normal pressing 8. To lock the screen display "Bye Bye" 9. Press quickly again and release release the button, then power off. 10. Unlock the screen 11. continually pressing for 2 sec or more 12. Display "BI BI" 13. Release the button, then power off. Package includes: 1 x Intsun GY560 frequency tester 1 x User Manual
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