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I use Dr. Gudinuf's method. Saver says I have a fault at 4 meters out. Ahah, the remote switch isnt working right.If Saver says the fault is at 46 feet, A hah, the squirrel has been nibbling again.If

I see in the image that K=70%. That seems to be the default when doing a reset of the unit. I find myself doing the test with the known length cable and getting a wrong value. Then I realize that the

I keep both of my NanoVNA (-H and -H4) up to date just to keep them up to date. I don't think using an older version for basic functions will be an issue. However, These updates, obviously, are to

Transform method use steps (distance between points) depending from points count / start / stop / velocity Example on H4 401 points, start 1M stop 1.5G step = 54,7mm So you can`t get result between

I have been playing around with some 75Ω cable about 5' in length. I am using, for training purposes, both the Transform/Linear method and the Measurement/Cable method. I find that each method gives

Hi , the problem was the reflection at port S21 , the possible calibration with the nanovna isn't a full 2 port . You may be attenuate this problem inserting an attenuator ( 6 or 10 dB ) at the port

Thank You! ________________________________ Sent: Friday, May 27, 2022 3:21 PM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] "running" line at top of the screen My

My NanoVNAs are still running the original firmware they came with more than a year ago. Enjoy and be happy.

As I newly picked up a NanoVNA-H Rev 3.4 is it so un usable that you MUST upgrade them or are they still useable without upgrading? What New features are available by upgrading them. Thank you, Chuck

Manfred, the problem is that I'm not designing this circuit, just trying to get it to work more reliably. I did get an email from Steve, AK4R that pointed to an article by W8JI on techniques to clean

This item surfaced on the -F forum recently. My $0.02 USD on it ;-) While I agree with the usefulness of the feature, I find it both distracting and difficult to see under all circumstances. It could

Yes, I adjusted the whip. No transmitter use. Can it be fixed? Perry [email protected]> wrote:

You left the NanoVNA and went to the antenna. Did you touch the antenna element? If so you may have had an ESD event. Or did you use a transmitter at any time? This might have damaged the front end.

Mike, the core problem with relays in such applications is that there are no relays that can handle both large and small signals well! Relays are available with "power" type contacts, or with "signal"

Hello, a few weeks ago I discovered the NanoVNA devices and purchased one. Today I wanted to have a look at how much an RF Relay (HF3-53) dampens the signal going through (S21) and compare it to the

It's pretty normal for relays and switches to get oxidized with time and no use. Just using them with some power through them will probably clean them. The first review said you can put 300 watts

First, nearly every 'white screen" topic here I've looked at seems to be related to firmware upgrades. I have tried to find a solution before asking about this. I was using the Nano to check

drill hole and try contact cleaner?? NO NO that will not help but you can open the relays and pull a piece of paper through the contacts to clean them a bit if dry paper is not enough ... a small drop

That is a common problem with relays.? The only two answers are somehow clean the contacts or replace the relay.? Cleaning is a temporary solution; they will cause trouble again.? And it isn't

I wasn't sure where to ask this question, but since I found the problem using my NanoVNA, I thought I'd ask here. Our club has a multi-band Bandpass filter from ICE, Model 419 that we want to use on