? 4.3 inch Touch Screen Shows :NanoVNA-F with 4.3-inch IPS TFT LCD and resistive touch screen, with a larger view angle and can be seen clearly in strong outdoor light,which can measure S-parameter, voltage standing wave ratio SWR, phase map, group delay, Smith chart, DELAY, POLAR, LINEAR and so on. ? Upgrade Metal Case: Standard aluminium shell to protect SMA head and reduce the interference of external electromagnetic wave to instrument. The RF front end is designed with a metal shield that allows the S21 to have a dynamic range better than 60dB over the full frequency range. ? Large Measurement Range : The measurement range of NanoVNA-F is 50k-1GHz. Use the harmonic of the clock chip SI5351 to measure frequency up to 1000MHz. At 600M-1GHz, the S11 has a dynamic range of 40dB (the standing wave ratio is less than 1.02). ? Upgrade Higher Capacity Battery: Upgraded the large capacity 5000mAh / 3.7V lithium battery, longer standby time, and extended USB interface. Typically, it can be used as a mobile power source to charge Android or Apple phones when not in use. Support Chinese and English menu switching. The Lipo charing IC to be changed to IP5306 (with 2A high charing current), making the charging time shorter. ?Upgrade the user program by virtual U disk (16MB SPI flash memory inside). Equpped with RF Demo Kit,For NanoVNA RF Test Vector Network Tests Filter/ Attenuator