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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

bad link

Check R&L Electronics, They have a full compliment of connectors/adapters and coax types. Also check msg4u.com for hardline surplus cables and connectors/adapters as well.

Hit & miss as they say, DX Engineering use to sell good coax in the past but in the past year on 2 separate occasions I got BAD cabled from them that were made in China. You get what u pay for!

Keysight webcast RF Microwave Signal Chain & Network

It's in the files section of the forum.? On Sat, 19 Sep 2020 at 5:21 PM, Steve Dightman<stevedightman@...> wrote: Larry, I too would like to see the manual you edit.? Where might I

It is on the 2nd page of the FILES section, yep, I missed it too. /g/nanovna-users/files/NanoVNA-User-Guide-English-reformat-Jan-15-20.pdf [image: photo] *Bob Willey* K3RLW (410)

Larry, I too would like to see the manual you edit.? Where might I find it. Steve

Have a quick look at the manual I edit, it's in the files section.? There is a short chapter on TDR with some examples.? ... Larry On Fri, 18 Sep 2020 at 8:43 PM,