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Surecom SF-20 Mini Frequency Counter Power Meter Battery indicator 20.000MHz~999.99MHz for Analog Walkie Talkie CB Radio Feature: 1. Power readout directly in digital without any calibration. 2. Maximum measurable power range up to 20W. 3. Check your Radio power output watt radio frequency under a second. 4. Easy to connect with hand-held radio 5. Test analog Radios is OK, could not test Digital Radio frequency & Power. Specifications:  Measurable power range: 0.1-20W Maximum power input: 20W Caution: 0-10W (Measuring can not be continue for more than a minute ) 10W-20W (Measuring can not be continue for more than a 30 second ) 20W or more (Measuring can not be continue for more than a 5 second ) RF power over 20W may damage the built in 50Ω dummy load. Metal body is heated while working is normal. Package Contents : 1x SF-20 METER 1x English User Manual 1x USB charger cable 1x USB AC adapter 100-240V 1x BNC-F to SMA-Male antenna 1x BNC-F to SMA-Female antenna Views: 3