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@Carsten: Lightning and Static: in the EFHW antenna with the transformer the antenna wire itself is grounded through the secondary and the coax via primary windings (a short for static). Your system

Measurement uncertainty? You're essentially measuring (V refl)/(V incident) with a noisy sensor.?? 1 part per 1000 (1.001) is 60dB.. the SNR of the measurement is in that ballpark. Calibration

@Carsten: welcome to the club.. EFHW antennas: I built several and I've been helping local OMs with building and measurements. The first step is to acquire an off the shelf one or to build DIY the

there were NEVER any v2plus4 clones.. so you will get a genuine one (i would now maybe buy a lite vna that goes up to over 6ghz but is a similar design as the vna v2 or v2plus4) the nanovna v2 has an

I've been analyzing Touchstone files Rudy Severns, N6LF, has recorded with his NanoVNA-H4. The magnitude of S11 is greater than 1 for many files. For example, after calibration right at the VNA

@All Thank you for the valuable input. @Roger , for the nice links to schematic & More specific groups. @gfmucci for the "Static warning" @Jim & Zack for the "Don't connect the FT-991A directly to the

And as far as static goes: Remember that any coax is, by design, low loss and can store a sizable amount of energy as a cylindrical capacitor. So, I always make a practice of "shorting" any coax I

I have been really careful about estimating power out of an amp. I have an HP 435B power meter with an 8484A head. Maximum power to the head is supposed to be 10 microwatts (-20 dBm). I carefully

The second most likely is "transmitting into it", or, more properly, making S21 measurements on a small amplifier that has output power bigger than the VNA can take. That 20dB gain block, driven with

"What is the most likely way that beginners kill their VNA ?" Static buildup especially in dry climates. I had one DOA and the vendor said static buildup killed it.

Carsten, Here is a link to the manufacturers Web site for your NanoVNA 2 Plus 4 Firmware, instruction manuals and PC software available there. https://nanorfe.com/nanovna-v2.html There are two groups

Hello Goup Old Ham here , but have never played with DIY antennas before , and have never had a HF Station. I have just gotten my first HF Ham station (FT-991A) , as i have "some" room in the

Yes, the TinySA is a far better tool for your proposed application. However, the NANOVNA can be used to measure the isolation between two antennas. Use it in a 2-terminal transmission measurement

It should work, though I would terminate the Ch0 port with the 50ohm cap. A better tool is the TinySA. It is about $60 in the US. TinySA.org

Hello.? Can anyone tell me if it's possible to use a nanoVNA such that it emits no signal and only operates as a receiver?? I want to try to detect and measure what is being emitted by an emitting

I am sure you will find this wonderful guide to also be very helpful, assuming you are able to translate your topics of interest into your favorite language.

See these posts from your inquiry last year.... /g/nanovna-users/message/23504 /g/nanovna-users/message/23517 Roger

Try NanoVNA Saver >> https://github.com/NanoVNA-Saver/nanovna-saver/releases/tag/v0.4.0 Roger

Sorry, my english is not good. I need software to cinfig the nano vna. Thank you.

Thanks Stan for this feedback. Anyfeedback is very welcome. I put click-on ferrites (25mm long) on port1, port2 and USB cables, they have (in my setup) no significant effect on the measured S21 (or