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1. You need to re-calibrate every time if you want the best accuracy. But when measuring Return Loss and SWR you do not have to re-calibrate if you are only interested in getting a reasonable

Thanks John, But the unit was fully charged and nothing connected???? So the real question is still how to do a hard reset. Mel, K6KBE

Hi All, I have gotten this to occur when one of these two thing occurs: o I turn on the NanoVNA with an antenna attached to the CH0 connector. o The battery charge is low. This may be conquencidental

All of the answers are good, HOWEVER, Here is what I do. I have built up two reactive loads to check the linearity and calibration each time I use the VNA. One for 1 MHz and 1 for 10 MHz, a PCB mount

1. Do you need to recalibrate the NanoVNA H4 every time you change bands or frequencies? In short, yes. To calibrate, be sure to hit "RESET" before beginning each cal sequence. 2. If so, can the

Hello, I still have a white screen on turn on. No case, just out of the box and charged. Checked the PCB and did not see any bridges on BOOT terminal, it measures 10 K to ground. Any thoughts? Mel,

I took the unit under my microscope and did not see any bridges from VC to Boot. Resistance of the Boot to ground in 10K. How to reset? pull to ground? Anyone got a R and Voltage diagram? Mel, K6KBE

Where is this on the PCB?? There are a string of feed throughs that are way to small a print for me. Mel, K6KBE

Alan, Issue solved. When I clicked the link in your message, I got the page [email protected] | Home </g/nanovna-users> again with in the blue bar at top right my username. Only

Kees, When you click /g/nanovna-users/files you need to be logged in on the browser page that opens. Top right should show your identity. Then you should have access to all the

Thank you both for checking. I had to say that I was logged on at Groups.IO. And I have also tried to use the links on an other two systems without succes. Apperently I have also to subscribe? to the

It depends on how accurate you need your measurements to be.? Each situation is different so you can answer your own question.? Calibrate the unit.? Make some measurements.? Come back a week later

Can someone please answer a couple of questions for me? I can’t find a solid yes or no on these. 1. Do you need to recalibrate the NanoVNA H4 every time you change bands or frequencies? 2. If so,

Hello Dee, There is no .dmg file. Download from https://github.com/NanoVNA-Saver/nanovna-saver/releases/tag/v0.3.8-rc the file "NanoVNASaver.macos.zip" Make a double mouse click on that file. Switch

Clyde,Glad to hear you got it working. I guess I didn't see where you said you were using Bluetooth. I don't have that on my H4, so I just use USB. Hope you find (or build) an Android app!Have fun!***

Hello Walt, I am not having any trouble with USB connections. I can connect to my Dell Laptop through USB with No problems. Where I was having trouble is with Bluetooth connection. The laptop had no

Reset calibration, if you not see noise, then problem in LOAD from calibration set, or in bad connection on CH0, check it.

Mel, That is exactly what happens if one shorts the boot contacts next to the battery connector when switching on. Therefore, check that the boot contacts are not shorted. Stefan. [email protected]>

I am not the best at using terminal, but, to the best of my knowledge, I've done all that I am supposed to do to get to the NanoVNA-Saver executable and I STILL cannot get a .dmg file. Anybody have a

Check that the Boot contacts aren't shorted . . . [email protected]> wrote: