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.

Seesii Nanovna H Vector Network Analyzer Upgraded Hw3 7 9khz

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

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Description

📡 Master your antenna game with precision and style!

SEAMLESS DATA MANAGEMENT - Built-in MicroSD port supports up to 32GB for effortless field data saving and timestamping.
COMPACT PORTABLE DESIGN - Lightweight 7.1 oz body with included accessories fits perfectly in any engineer’s toolkit or gift box.
ADVANCED MEASUREMENT SUITE - Measures S-parameters, SWR, phase, delay, and displays Smith charts for professional-grade diagnostics.
ULTRA WIDE FREQUENCY RANGE - Covers MF, HF, VHF, UHF bands from 9KHz to 1.5GHz for versatile antenna analysis.
INTUITIVE TOUCHSCREEN INTERFACE - 2.8-inch color LCD touchscreen offers crisp visuals and easy navigation on the go.

The SEESII Nanovna-H HW3.7 is a compact, portable vector network analyzer designed for professionals and hobbyists alike. It offers a broad 9KHz to 1.5GHz frequency range, a vibrant 2.8-inch touchscreen, and advanced measurement capabilities including S-parameters and Smith charts. Enhanced with a metal shield for accuracy and a MicroSD slot for data storage, it’s the ultimate tool for antenna tuning and RF diagnostics.

Reviews

D**K

19.09.2025

J**S

1.02.2026

P**M

26.03.2026

M**J

14.02.2026

S**Y

8.07.2025

A**R

2.12.2025

M**.

16.08.2025

J**S

7.01.2026

F**S

24.02.2024

M**O

25.06.2025

J**V

15.08.2025

A**D

23.05.2020

J**N

27.04.2025

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₩133437

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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Fantastic experience overall. Will recommend to friends and family.

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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

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Common Questions