The RF front end is designed with a metal shield that allows the S21 to have a dynamic ranges better than 60dB over the full frequency ranges. At 600M-1GHz, the S11 has a dynamic ranges of 40dB (the standing waves ratio is less than 1.02). Use the harmonic of the clock chip SI5351 to measure frequency up to 1000MHz. The NanoVNA-F measurement ranges is 50k-1.5GHz. Standard aluminium housing to protect SMAhead and reduce the interference of external electromagnetic waves to instrument. Upgrade the user program by virtual U disk (16MB SPI flash memory inside). Support Chinese and English menu switching. Use a larger and better operating power switch. The Lipo charing IC to be changed to IP5306 (with 2A high charing current), making the charging time shorter. Usually, it can be used as a power bank when the instrument is not used.

Switch to a large capacity 5000mAh/3.7V lithium battery, longer standby time, and expand a USB interface. Use 4.3-inch IPS TFT LCD and resistive touching screen, with a larger view angle and can be seen clearly in strong outdoor light. 4.3' LCD Display NanoVNA VNA NANOVNA-F HF VHF UHF Vector Network Analyzer Antenna Analyzer Aluminum Case 5100mAh Battery

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