Feature: 1. Broad Ranges: The improved frequency algorithm can use the odd harmonic extension of the si5351, supporting measurement frequencies up to 1.5GHz. The 50K-300MHz frequency range of si5351 direct output provides better than 70dB dynamics, the extended 300M-900MHz frequency band provides better than 60dB dynamics, and the 900M-1.5GHz frequency band provides better than 40dB dynamics. 2. Easy Testing: The default firmware main function is used for antenna performance measurements. The TX RX method can measure the complete S11 and S21 parameters. If you need to obtain S12 and S22, you need to manually replace the transceiver port wiring. 3. Smart Design: With memory card port and battery circuit management, measurement data or screenshots can now be saved in it at any time. You can use a data cable to connect your phone to see clear high definition images on your phone. 4. Stable Power: Can be powered by USB from battery. The built in 650mAh battery can work continuously for 2 hours. If you need extra working time, you can connect a power bank or power supply. 5. Simple Carrying: Comes with a light weight and a compact size as well, both the storage and carrying are very convenient. Specification: Item Type: Vector Network Analyzer Display: 2.8in TFT RF Output: 0dbm (±2dbm) Port VSWR: