137.5MHz～2.7GHz 2.4 Inch TFT Display Screen SWR RF Vector Antenna Analyzer Meter Tester SWR Meter for Resistance Impedance

Features:
Wide Measuring Range and Accurate - This device is designed to measure Resistance, Reactance, SWR and s11, high accuracy with wide frequency range from 137.5MHz to 2.7GHz.
TFT Display - With 2.4 inch TFT display screen, 320 * 240 pixel, so you can see the data more clearly, give you a better using experience.
Compact and Portable - With built-in large capacity battery, this compact and lightweight device is portable and suitable for outdoor use.
Auto-Shutdown Function - It is able to auto-shutdown to save power, which can be set from 5mins to 60mins, or you can deactivate it as your preference.
Four interfaces - Single-point measurement(default), scanning, system information, correction and calibration, easy to use.
Note:
To ensure the accuracy of measurement and calibration, the instrument should be preheated for at least 15 minutes.
Try using fine quality RF cables and connectors.
Calibration cables marked as the next may not require direct calibration and use.
Before measuring and calibrating, make sure that you are not exposed to strong wireless signals to avoid interference caused by inaccurate measurements.
Test cable process affects the measurement accuracy, it is recommended that, where possible, do not choose too long test cable.