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Re: Bad nanovna?
Yes blue trace responds properly.
By Bob Albert <bob91343@...> · #4018 ·
Re: Bad nanovna?
I did what you suggested. Nothing change the CH1 display of noise. Bad unit, I guess. The seller does not respond. Thanks for your input.
By Ken Bozarth · #4017 ·
Re: Bad nanovna?
Make sure you're selected channel CH0 for SWR. It cannot measure SWR on channel CH1
By QRP RX · #4016 ·
Re: info update
You've been instructed to read the User Guide several times.It's in the files section - dated Oct 2nd.There is also a DfuSe document on hugen's google drive page - look for it. Please use the WIKI and
By Larry Rothman · #4015 ·
Re: Bad nanovna?
I saw the comment regarding soldering of the connectors and checked mine, which look good.? I don't think the problem is mechanical, as I have tried gentle tapping and warping without effect.?
By Bob Albert <bob91343@...> · #4014 ·
Re: info update
I had found it. I had asked other questions. Can you answer me? Thanks
By @in3elx · #4013 ·
Return Loss, AW: [nanovna-users] Accuracy of calculated values - Nano VNA and Saver
Hi all, why blame someone for complaining controversial RL signs !? Keep cool, please. Yes, Return Loss has been an issue and some use it in a wrong way. This caused Trevor S. Bird, former IEEE chief
By DJ7BA · #4012 ·
Re: Bad nanovna?
Probably someone tried to measure amplifier with this nanovna and it's CH1 input is burned out. Another possible root of cause - incorrect channel setting for trace. In order to check, do the
By QRP RX · #4011 ·
Re: Is there an Android app for the NanoVNA - WebUSB
NanoVNA-Web-Client includes some Android app source. It is being actively developed, with automated build tools and even unit tests: https://github.com/cho45/NanoVNA-Web-Client/tree/master/android Has
By Oristo · #4010 ·
Re: Nano saver - Reading / Writing cal data
Thanks - add it to the console command doc. ...Larry
By Larry Rothman · #4009 ·
Re: Bad nanovna?
Dry solder joint maybe? Saw some people had issues with the SMA-connectors not soldered properly [email protected]> wrote:
By Hendrik Fleming · #4008 ·
Re: info update
@in3elx Hi Rob, the files you are looking for are here:
By NanoVNA · #4007 ·
Re: Bad nanovna?
Yes it works sometimes.? The SWR display is particularly erratic.? But even when it works, it's only temporary until it decides to shut down. The unit hasn't been abused.? I am impressed when it
By Bob Albert <bob91343@...> · #4006 ·
Re: ERROR ''virtual COM PORT''
See here for a possible solution http://www.chibios.com/forum/viewtopic.php?t=868 [email protected]> wrote:
By Hendrik Fleming · #4005 ·
Re: Bad nanovna?
Yes, calibrated fine. S11 works fine. With a direct cable between the ports, I get the noise centered around 0dB. Removing the cable, the display is exactly the same. Inserting an attenuator, there is
By Ken Bozarth · #4004 ·
Re: Nano saver - Reading / Writing cal data
Thanks for the clarification Erik, With everything Rune has on his plate I'd hate for him to waste his programming efforts on something the firmware does not implement. Usually all save commands come
By hwalker · #4003 ·
ERROR ''virtual COM PORT''
Hi, windows does not recognize the port, how should I do?
By amdiog@... · #4002 ·
Re: Bad nanovna?
My unit has developed a problem I can't solve.? It is intermittent.? Sometimes it works well but then it gives me a gratuitous reboot or shuts down and then isn't working.? I recalibrate a few
By Bob Albert <bob91343@...> · #4001 ·
Re: Bad nanovna?
Have you calibrated it? If you connect a fly-lead between port 0 &1, what do you measure ? And a 3dB pad?
By Hendrik Fleming · #4000 ·
Re: info update
I found the progam DfuSe_Demo_V3.0.6_Setup.exe, but it's a demo. Are there any limitations? Is there a document that explains the update procedure for those who have never done this? Thanks
By @in3elx · #3999 ·