[NEW ADDON] The built-in SD card slot and the 32GB micro card have solved the issue with saving on-site data; you can directly record data to the card, which is convenient for your data sharing and storage. Take the NanoVNA-H4 anywhere, anytime for on-the-go testing [UPGRADED NANAOVNA H4 HW V4.4] Equipped with the latest HW 4.4 version, the NanoVNA H4 Vector Network Analyzer is a Hugen Original. It delivers reliable vector network measurement capabilities, features a compact handheld design, operates as a stand-alone device with a 4-inch LCD display, and is portable—supporting power supply via a 1950mAh battery or USB [IMPROVED FREQUENCY ALGORITHM] The improved frequency algorithm of the NanoVNA-H4 utilizes the odd harmonic extension of the SI5351 to support a maximum measurement frequency of 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 [ANTENNA PERFORMANCE MEASUREMENT] The default firmware's main function of the NanoVNA-H4 is designed for antenna performance measurement. Using the TX/RX method, you can measure the complete S11 and S21 parameters. If you need to obtain the S12 and S22 parameters, you will need to manually rewire the transceiver ports [PC CONTROL] Using the PC software NanoVNASaver, the NanoVNA-H4 antenna analyzer can connect to a computer, extract data for on-screen display, and save it to Touchstone files. You can also export Touchstone (SNP) files through the software, which are compatible with various radio design and simulation software [WHAT ARE INCLUDED] 1x NanoVNA-H4 host (with 1950mAh battery), 1x 32GB Micro SD card, 4pcs SMA male calibration kit (open/short/load/SMA female to female connector), 2x 16cm/6.3inch SMA male to male RG174 RF cable, 1x USB Type-C data cable, 1x Type-C to Type-C cable, 1x Lanyard with stylus, 1x stylus pen, 1x User Manual Nano VNA H4 Product ParameterABS case: 75mm x 133mm x 18mm (excluding protrusions)
Measurement frequency: 9KHz -1.5GHz
RF output: 0dbm (±2dbm)
Measurement range: 70dB (9kHz-300MHz), 60dB (300M-900MHz), 40dB(0.9G-1.5GHz);
There may be errors caused by nonlinear transformation of fundamental wave when using harmonic measurement.
Port SWR: < 1.1
Display: 4 inch TFT (320 x 480)
USB interface: USB type-C communication mode: CDC (serial)
Power: USB 5V 200mA, built-in 1950mAh battery, maximum charging current 1A
Number of scanning points: 101 (fixed)
Display Tracking: 4, Marking: 4, Setting Save: 5
Frequency Tolerance:<2.5ppm
Frequency Stability:<0.5ppm

Package List1x NanoVNA-H4 host (with 1950mAh battery)
1x USB Type-C data cable
2x 30mm SMA male to male RG174 RF cable
1x SMA simple calibration kit
1x SMA female to female connector
NOTE: the Nanovna H4 is only compatible with the low-speed and supports SPI mode SD cards for now.
NanoVNA-H4 Vector Network Analyzer for Ham Radio
Designed for ham radio operators, electrical engineers, and RF enthusiasts, this compact vector network analyzer (VNA) delivers exceptional performance across the 9KHz-1.5GHz frequency spectrum, making it an indispensable tool for antenna tuning, cable testing, and circuit analysis.
Unmatched Frequency Coverage & Measurement Accuracy
At the core of the NanoVNA-H4 lies an enhanced frequency algorithm that leverages the Si5351 chip's odd harmonic extension to reach up to 1.5GHz—covering HF, VHF, and UHF bands. Its dynamic range excels across segments:
50KHz-300MHz: Over 70dB dynamic range for precise HF/VHF measurements
300MHz-900MHz: 60dB dynamic range for UHF applications
900MHz-1.5GHz: 40dB dynamic range (with expansion firmware) for high-frequency testing
Nano VNA H4 boasting a frequency accuracy of <2ppm and stability of <0.5ppm. The optimized RF bridge design increases CH0 output to 0dBm, enhancing reflection measurement accuracy.
The NanoVNA-H4 features a 4.0-inch TFT touchscreen, delivering clear visibility under sunlight and comfortable viewing indoors. Its compact ABS shell (75mm x 133mm x 18mm) balances durability with portability, weighing just enough to feel sturdy without sacrificing mobility.
Built-in 1950mAh rechargeable battery, it operates for up to 8 hours on a single charge—ideal for outdoor antenna installations or remote fieldwork . The redesigned power management circuit minimizes noise and USB interference, while the unit's wide operating temperature range (-20℃ to 50℃) ensures reliability in extreme conditions.
Versatile Testing Capabilities
Comprehensive S-Parameter & TDR Functions
The NanoVNA-H4 measures S11 (reflection) and S21 (transmission) parameters out of the box, with manual port rewiring enabling S12 and S22 testing for full two-port analysis. Its integrated Time Domain Reflectometry (TDR) quickly locates cable faults and measures