Features: The AW07A antenna analyzer is a compact battery powered RF impedance analyzer. It can test the standing wave ratio state of the antenna, measure the impedance and reactance components, and help you solve antenna problems. The antenna analyzer is specifically designed to analyze 50 ohm antenna systems. It can test the standing wave ratio status, measure impedance and reactance components, and help you solve antenna problems. Consisting of six basic components: variable oscillator, frequency counter, independent oscillator, 50ohm RF bridge detector, A-D converter, and microcontroller. The operating frequency ranges of the unit extends from to 490MHz. Specifications: Material:Metal SWR Value from 1.1 to 9.99 Band Coverage: 160m, 80m, 40m, 20/30m, 10/15m, 6m, 2m, 70cm RF Output Levels: 2Vpp SWR Ranges: 1~9.9 Impedance Ranges: 10~500ohm External Power: DC10.8V~12V Battery: 8pcs AA Alkaline Battery(NOT INCLUDED) Power Consumption: <150mA; <165mA(VU Bands, B/L Offs) Package Includes: 1Set Antenna Analyzer note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.