Seesii NanoVNA-H4 Vector Network Analyzer 1.5GHz 4" Touchscreen | Measures SWR, Phase, Smith Chart

• Added 32GB memory card, get it and use it, saving you the trouble of buying accessories again! It's very useful as an antenna analyzer for your ham station, easy to set without fancy calibration
• UPGRADED NANOVNA ANALYZER: SeeSii Nanovna-h4 Vector Network Analyzer is developed by Hugen. With latest 4.4 version,9KHz-1.5GHz measure range,4.0 inch LCD touchscreen,mini and portable design.This Antenna Analyzer is provides outstanding vector network measurement capabilities and perfect for evaluating antenna resonance and SWR.It is a very handy & smart analyzer for electronics engineer, amateur radio operators or radio diy amateurs
• BUILT-IN MICRO-SD PORT & TIME DISPLAY: The lastest antenna analyzer with MicroSD card port,so you can save field test data or screens to a MicroSD card at any time,support up to 32GB memory card. (Included).In addition, different from old version NanoVNAs, the date and time can be customized, which is convenient for you to further record and save data..The default firmware main function is used for antenna performance measurement
• IMPROVED FREQUENCY ALGORITHM:The Vector Network Analyzer can use the old harmonic extension of si5351 to support the measurement frequency up to 1.5GHz. The 50K-300MHz frequency range of the si5351 direct output provides better than 70dB dynamic, The extended 300M-900MHz band provides better than 60dB of dynamics, and the 900M-1.5GHz band is better than 40dB of dynamics.Great for trouble shooting antennas and improving performance
• PC CONNECTION & TX/RX FUNCTION:The vna analyzer uses PC software NanoVNASaver, it can connect to a NanoVNA and extracts the data for display on a computer for saving to Touchstone files. We can export Touchstone (snp) files for various radio design and simulation software through PC software.In addition,the default firmware is mainly used for antenna performance measurement. The TX/RX method can measure the complete S11/S21 parameters (need to manually replace the transceiver port wiring)
• Abundant Accessories:Equipped with 1x NanoVNA-H4(with 1950mA-h battery), 1x USB Type-C cable, 2 x 15cm SMA male to male RG316 RF cable, 1x SMA male calibration kit - OPEN,1x SMA male calibration kit - SHORT ,1 x SMA male calibration kit - LOAD,1 x Touchscreen pen,1 x 32GB Card
• Reliable After-Sales Service:We provide professional technical support to keep you away from after-sales worries. If you are not satisfied with SeeSii Nanovna Vector Analyzer or have any other questions, please feel free to contact us. Our after-sales service experts will reply to your information as soon as possible, We will do our best to solve your problems, and you can purchase and experience with confidence

• Connect Antenna and Power — Attach your antenna to one of the SMA ports using the provided RG316 RF cable. Connect the USB Type-C cable for power or rely on the internal 1950mAh battery for portable operation.
• Select Measurement Mode — Use the 4-inch touchscreen to navigate the menu. Select the desired measurement mode, such as S11 (reflection coefficient) for antenna impedance and SWR, or S21 (transmission coefficient) for measuring device gain or loss.
• Configure Frequency and Calibrate — Set the start and stop frequencies for your measurement range (up to 1.5GHz). Perform calibration using the included OPEN, SHORT, and LOAD kits at the desired frequency points for accurate results.
• Analyze Data and Export — View real-time measurements on the touchscreen, including SWR, impedance, phase, and Smith Chart. For detailed analysis, connect to a PC via USB and use NanoVNASaver software to export data in Touchstone (.snp) format.

Typical situations where Seesii NanoVNA-H4 Vector Network Analyzer 1.5GHz 4" Touchscreen | Measures SWR helps — illustrative scenarios, not customer reviews.