What does it mean ”if you need to get s12/s22 curve, please exchange the tx/rx port manually”? is it easy to do?

To change the TX/RX port simply unscrew the connection cable from the upper port on the NanoVNA and reconnect it to the lower port.

Will the unit be the 3.4 if i order it now?

Yes, it is 3.4 version, if you order it now

I read in description "900 mhz - enable extended firmware." what does this mean? does it cost extra?

As I understand it, you can extend the range of the device by a firmware update. But there is a resulting decrease in performance. It’s a free update if you so choose. Wayne N4EYZ

What connection type does the battery charger use?

This is an add-on to the other answers that may prevent damage. Quote from specs. on this product page: "maximum charging current 0.8A" In other words, this may get damaged if more than a 1 amp USB charger is used.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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SEESII Nanovna-H Vector Network Analyzer,Upgraded HW3.7 9KHz-1.5GHz MF HF VHF UHF Antenna Analyzer, Measuring S Parameters, Voltage Standing Wave Ratio,Phase,Delay,Smith Chart,Support Data Storage

Product ID: 171114193

💾MicroSD data storage up to 32GB

📱2.8-inch touchscreen display

📶9KHz-1.5GHz wide freq range

₩140676

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📡 Unlock the full spectrum of antenna analysis — anytime, anywhere!

BROAD SPECTRUM MASTERY - Covers MF, HF, VHF, UHF bands from 9KHz to 1.5GHz — no antenna challenge too big.
DATA AT YOUR FINGERTIPS - Built-in MicroSD slot lets you save and archive field data effortlessly, supporting up to 32GB cards.
PRECISION MEETS PORTABILITY - Compact 2.8-inch touchscreen with upgraded HW3.7 for on-the-go pro measurements.
SEAMLESS SOFTWARE INTEGRATION - Control and analyze via NanoVNASaver on Android and PC for professional-grade insights.
COMPLETE CALIBRATION KIT INCLUDED - All essential SMA cables and calibration tools packaged for instant, accurate setup.

The SEESII Nanovna-H Vector Network Analyzer HW3.7 is a compact, portable antenna analyzer covering 9KHz to 1.5GHz frequency range. Featuring a 2.8-inch touchscreen, advanced frequency algorithm, and metal shielding for enhanced accuracy, it supports S-parameter, SWR, phase, delay, and Smith chart measurements. With built-in MicroSD storage, Android/PC software compatibility, and a comprehensive accessory kit, it’s designed for electronics engineers, amateur radio operators, and DIY enthusiasts seeking precise, on-the-go antenna diagnostics.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₩140676

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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SEESII Nanovna-H Vector Network Analyzer,Upgraded HW3.7 9KHz-1.5GHz MF HF VHF UHF Antenna Analyzer, Measuring S Parameters, Voltage Standing Wave Ratio,Phase,Delay,Smith Chart,Support Data Storage

Description

Specifications

Common Questions