SKU: 20878155506

4Inch Upgraded NanoVNA Plus 50kHz-2.7GHz Handheld Vector Network Analyzer

Sale price$67.29 Regular price$74.77
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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17

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Description

4Inch Upgraded NanoVNA Plus 50kHz-2.7GHz Handheld Vector Network Analyzer4Inch Upgraded NanoVNA Plus 50kHz 2. 7GHz Handheld Vector Network Analyzer Description: NanoVNA H4 Plus is a portable handheld vector network analyzer (VNA) designed to measure reflection and transmission coefficients. Originally designed by edv555. After several upgrades, VNA H4 is the highest performance version at present, with the measurement frequency range upgraded to 50KHz 2. 7GHz, and the performance is better than the previous version.

4Inch Upgraded NanoVNA Plus 50kHz-2.7GHz Handheld Vector Network Analyzer

Description:
NanoVNA-H4 Plus is a portable handheld vector network analyzer (VNA) designed to measure reflection and transmission coefficients. Originally designed by edv555. After several upgrades, VNA-H4 is the highest performance version at present, with the measurement frequency range upgraded to 50KHz-2.7GHz, and the performance is better than the previous version.

Feature:
1: Adopting ergonomic design, the appearance is fully upgraded.
2: The measurement range is upgraded to 50KHz-2.7GHz and the scanning points are increased to 401 points.
3: Support SD card to save test data and export data conveniently.
4: With resistive touch screen function, and upgraded large knob operation, the operation is more convenient.
5: Large capacity built-in 5000mAh battery for longer battery life.
6: 4-inch IPS LCD display, IPS has the characteristics of wide viewing angle, accurate color reproduction, high contrast and uniform brightness.

Specifics:
Condition: 100% Brand New
Bandwidth: 50KHz-2.7GHz
Dynamic range: 80dB (50KHz-900MHz) 60dB (900MHz-1.5GHz) 50dB (1.5GHz-2.7GHz)
Reflection coefficient: SWR: <1.1
Frequency accuracy: <0.5 ppm
Frequency stability: <2.5 ppm
Scanning points: 401
Product size: 160x92*35mm

Note:
1.Please allow 1-3mm difference due to manual measurement.
2.The color might be a little different from the actual product due to color display of different monitors.

Package Included:
There are 2 options as follows:
Option 1:
1 X USB type-c cable
2 X 15cm SMA male to male TG316 RF cables
1 X SMA male calibration kit OPEN
1 X SMA male calibration kit short
1 X SMA male calibration kit LOAD
1 X SMA female to female connector
1 X Type-c to Type-c cable
1 X Stylus pen
1 X Pick
1 X NanoVNA-H4 PLUS host

Option 2:
1 X USB type-c cable
2 X 15cm SMA male to male TG316 RF cables
1 X SMA male calibration kit OPEN
1 X SMA male calibration kit short
1 X SMA male calibration kit LOAD
1 X SMA female to female connector
1 X Type-c to Type-c cable
1 X Stylus pen
1 X Pick
1 X NanoVNA-H4 PLUS host
1 X 32GB Micro SD Card

Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20878155506

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4.2 ★★★★★
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Cynthia Kelley
Pawtucket, US
★★★★★ 5
Tabs work 100 per cent
Product worked well for my system. A bit too well. I took a whole tab the first night and l was out before planned. Too 1/4 tab the second time and it felt more natural.
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Reviewed in the United States on May 18, 2026
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Amazon Customer
San Leandro, US
★★★★★ 4
Extra strength melatonin
This item is ok to take only as needed.
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Reviewed in the United States on June 4, 2026
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Candi
Waukegan, US
★★★★★ 5
Good product
Worked well on my silver jewelry chains.
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Reviewed in the United States on May 12, 2026
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levi clark
Dallas, US
★★★★★ 5
Amazon Melatonin? Amazing!
These work as well or better than some of the more expensive ones my wife usually gets. They don't dissolve in your mouth and they arent gummies. No extra sugars involved. Puts me to sleep quite well and allows me to stay asleep. No bad taste, no weird dreams. No side effects. Absolute gem of a find on Amazon. Great price for a great night sleep.
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Reviewed in the United States on April 7, 2026
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C. Rogers
Chelsea, US
★★★★★ 5
"Take this sinus infection!"
Size: 100 Count (Pack of 1)
I am a chronic sufferer of bacterial sinus infection. Ask me why, and I can give you some long winded explanation about a slightly deviated septum and sinus design, and a slew of other stuff that I've read and heard from my doctor. Bottom line, both you and I don't care the reasoning, but rather, preventative care. I can tell you that these Elderberry capsules help. If I get "that feeling" like a sinus infection is impending, I'll start popping two of these twice a day. 9 times out of 10, I can stave off the infection from grabbing a foothold in my sinuses long enough to let my immune system kick it completely out (without antibiotics and/or steroids). Does it help get rid of a sinus infection already in place?: inconclusive from my experience. Once I have a sinus infection, it takes about the same amount of time to get rid of it whether or not I'm taking it. Maybe I get rid of it a day soon, but statistically that's probably considered to be "noise in the data". Does it work for flu and other viral colds? I can't tell you that. I know that bacterial sinus infections can be precipitated by viral infections, but excluding bacterial sinus infection, I don't get sick. I've had the flu maybe twice in the last 20 years. Bottom line I have no experience with regard to using this to fight flu. Can't hurt to try though (I don't think you can OD on berries easily, could be wrong though). Does it have any other benefits? I don't know, maybe. Again I can only speak from experience. I take them, it staves off a sinus infection. I get that there are a lot of other beneficial claims about elderberry, but I have personally never noticed/experienced them. Is this just another homeopathic snake oil? No. While I agree that there are a lot of homeopathic "remedies" out there that don't work and are probably just a placebo effect, there are also ones out there that work. Heck, I've experienced allergic reactions to homeopathic remedies that landed me in worse trouble than before. Elderberry is a homeopathic remedy that works for me. Will it work for you? Maybe, maybe not, every body is different, and it could be that my body utilizes it due to a deficiency of something that elderberry has. Summary (tl;dr): Get it and try the bottle once. You can take it all the time, but I find it sufficient to take them when I feel a sinus infection coming on (I mean, who *wants* to take a bunch of pills at breakfast). Berry form is probably preferable, but the capsules are convenient and store for long periods of time without getting mildew-y. The price is right, it staves off sinus infections, and probably works for staving off other colds as well. Can't hurt to find out if your body responds to it.
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Reviewed in the United States on October 3, 2013

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