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Here's the post of April 8 2020 that Neil has cited (there's 17 posts in the thread): /g/nanovna-users/topic/72891049#12494 John started another thread on Aug 31 2020 (no

You may want to look at Fair Radio Sales. They have an interesting and ever changing mix of military surplus cables and connectors: https://fairradio.com/ -pat N8PN

i am thinking he has the Smith chart turned off 73, Bill KU8H bark less - wag more

Hello! could you take a detailed photo of the PCB? -- С Уважением Донецкий Денис. понедельник, 21 сентября 2020г., 12:57 +03:00 от yachnakr@... :

I can reproduce what happens to you, if I leave the screen pressed when turning on the nanovna.

He probably needs to enable at least 1 marker to see anything useful.

Can you connect the nanovna to the USB? Maybe start with the command clearconfig? Or also force the DFU mode through the jumper of the "booto" and "vdd" pins to try to update the equipment's FW.

Try The RF Connection: https://rfconnection.com/ email at: rfc@... Wide selection of connectors and coax types. Disclosure: I know Joel (w3rfc) and buy from him regularly. Bob,

Removing the covers didn't help either. I've also tried to disconnect/connect the battery again. No luck there.

I would try to loosen or remove the top cover. Sometimes the cover presses the screen at some point and this causes a malfunction. Igor.

I thought I did. But I'm clearly missing something. Do I need to load a suitable firmware? Unable to see from the user guide if that's what I'm supposed to do first.

Have you tried to read the instructions?

Hi, I received my Nano VNA today. The display turns on but there is no smith chart that comes up. Only the start and stop frequency values are visible. Please find the image below. What can

Some time back there was another thread on this subject that was very helpful. The content was: 4a. TDR setup for NanoVNA #tdr From: John Gord Date: Thu, 09 Apr 2020 01:07:40 CDT The following

It was almost the same with the 10 dB as the 20 dB pads. SWR in the passband was 1.0 to 1.0 without a pad. With the pad is meaningless.

what did the S11 look like without the pad? What happens with a 10dB pad instead of the 20?

Howard, The problem could be match at the CH0 port. I checked my -H4 and -H and they both had 25dB or better return loss to 900MHz. Can you measure the Port 0 return loss on your NanoVNA? Note that

I have been testing LPFs and found that I had filter characteristics that did not make sense. I had much more ripple in the filters then design and simulation showed. I added a 20 dB attenuator to the

try mgs4u.com Max Gain Systrems

I have had a nanoVNA-F for about a month. Three of us bought them. All of us are VHF/UHF Meteor Scatter and Satellite enthusiasts. All 3 of us have RigExpert AA-230 Zoom units or better. I also have