The -F has been upgraded to Firmware 1.0.4 (previous is 1.0.2),Hardware 3.2, measurement range 10KHz-1.5GHz. The VNA optimizes the S21 insertion loss/filter measurement performance, with a larger dynamic range. The 10K-300MHz frequency range of the si5351 direct output provides 70dB dynamic, The extended 300M-900MHz band provides 60dB of dynamics, and the 900M-1.5GHz band is 50dB of dynamics Using PC software Saver, it can connect to the and extracts the data for display on a computer, and for saving to Touchstone files. export Touchstone (snp) files for radio design and simulation software through PC software. Supports Android Mobile Phone only Changed to rotary encoder, the antenna analyzer can be operated in greater smooth and convenience; added circuit, the now owns real-time clock and perpetual calendar functions; The frequency setting can choose the start and end or the center span mode; plus the boot sound can be turned on or off up to your decision; Plus added a considerate folder stand for easy operation The battery has been improved to 5000mAh, with protective case, you can working with it outside for a long time. As an , the built-in 5V output is for Android phone or tablet charging The metal shield is designed to reduce the external interference and improve the measurement accuracy. 4.3 Inch Display will show you accurate curve and data, improving your using experience. Scan Points: Up to 301 points. Material: Metal colour: black Package Contents: 1 set x Antenna Analyzer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.