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Re: Locked, then white screen on NanoVNA-H
Yes, I adjusted the whip. No transmitter use. Can it be fixed? Perry [email protected]> wrote:
By Perry Westberry · #28188 ·
Re: Locked, then white screen on NanoVNA-H
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.
By Roger Need · #28187 ·
Re: BandPass Filter Relay Contacts
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"
By Manfred Mornhinweg · #28186 ·
Question S21 measurement relay
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
By Fabio · #28185 ·
Re: BandPass Filter Relay Contacts
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
By wb6ogd · #28184 ·
Locked, then white screen on NanoVNA-H
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
By Perry Westberry · #28183 ·
Re: BandPass Filter Relay Contacts
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
By Siegfried Jackstien · #28182 ·
Re: BandPass Filter Relay Contacts
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
By Bob Albert <bob91343@...> · #28181 ·
BandPass Filter Relay Contacts
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
By Michael Foerster · #28180 ·
Re: NanoVNASaver 0.4.0 crashes on start
Roger -- thank you for the hint on where to find it. I had tried searching my whole hard disk, but it didn't seem to pop up. The software NOW WORKS!!!! 73's de K7ZOO
By Curt K7ZOO · #28179 ·
Re: NanoVNASaver 0.4.0 crashes on start
Stan ... YAY!!!!!! I know that was probably an easy answer for you, but seriously THANKS A LOT !!!! I have a few antenna analyzers, but the NanoVNA is my only VNA and I need to make measurements of
By Curt K7ZOO · #28178 ·
Re: NanoVNA-Saver 0.1.3 MAC
Solved.... I may have had multiple issues, but this is what I did. there were two versions of python on my machine, so I uninstalled both and reinstalled. I have a Macbook Pro with a M1 chip. I had to
By Lynn Mears · #28177 ·
Re: NanoVNA-Saver 0.1.3 MAC
OK, thanks!
By Lynn Mears · #28176 ·
Re: NanoVNA-Saver 0.1.3 MAC
I guess I missed that message, but it appears from your build logs that that requirement does not exist in your build, since early in the log (sorry, don't have that message . . . ) it clearly shows
By Tim Dawson · #28175 ·
Re: NanoVNA-Saver 0.1.3 MAC
The install instructions said ¡° Change PyQt restriction in setup.py PyQt5==5.11.2 to PyQt5¡± That was my original questions as to how to do that.
By Lynn Mears · #28174 ·
Re: NanoVNA-Saver 0.1.3 MAC
It looked like it was having a problem building related to sip, so was hoping that wou,d help. I'm not honestly clear what you are calling a "PyQt restriction" . . . Building PyQt is often a part of
By Tim Dawson · #28173 ·
Re: NanoVNASaver 0.4.0 crashes on start
The file is called NanoVNASaver.ini. It is located at C:\Users\Your-User-Name\AppData\Roaming\NanoVNASaver\NanoVNASaver.ini Roger
By Roger Need · #28172 ·
Re: NanoVNA-Saver 0.1.3 MAC
I installed sip. We¡¯re you thinking that would solve the error (it did not) or is that what I use to change the PyQT restriction? Thanks!
By Lynn Mears · #28171 ·
Re: NanoVNASaver 0.4.0 crashes on start
Try deleting the saver.ini file and starting it up again. It is unhappy with the blank initialization of some parameter.
By Stan Dye · #28170 ·
Re: NanoVNA and VNAsaver
Yes, that should work. Note that to get uncalibrated data from the nano, you need to reset the calibration, since it always powers on with whatever state is in save slot 0. That is why many find it
By Stan Dye · #28169 ·