Features 1 Measuring Antenna SWR Standing Wave Ratio with graphical display in a selected frequency range 2 Measuring Antenna Impedance Z R X 3 Measuring Antenna Resistance R 4 Measuring Antenna Reactance X All the above with graphical display in a selected frequency range 5 Quick search for antenna resonance frequency 6 Very suitable for antenna measurement and adjustment 7 Portable and small sized 8 Easy and intuitive operation 9 Robust measurement accurate and resistant to environmental interference 10 Long sustaining Li ion Rechargeable Battery for a long operation time 11 Very suitable for outdoor antenna measurement 12 Low cost and wide frequency coverage 13 Clear LCD display even under daylight 14 Additional functions used as a HF signal generator or a Field strength meter Specifications 1 Frequency Range 0 5MHz 60MHz2 Frequency Adjustable Step 100Hz minimum 3 Output Level 3V Open loop at 14 000MHz Peak to peak 4 Frequency Scanning Width 250K 500K 1M 2M 5M 10M 20M 50M5 Frequency Scanning Step 1KHz 2KHz 4KHz 8KHz 20KHz 40KHz 80KHz 200KHz coupled with frequency scanning width not Adjustable 6 SWR Range 1 00 9 997 Impedance Range 0 1 999 9 Ohms8 50 ohms BNC connector9 Sharp 16M Color Screen LCD 2 inch 240x320 QVGA about 4 3 x 3 2 cm 10 Internal Power 3 7V Polymer Li ion Rechargeable Battery11 Recharging Power Source DC 5 0 5 5V 500mA DC3 5 Connector Positive inside Negative outside Central Pin