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Why not just use a normalized Smith Chart? Ten the center resistance can be anything you want. Dave - W?LEV

Since I use the nanoVNA only for amateur radio or tinySA related work, everything is nominally 50 Ohms. But for purely theoretical reasons I'm looking forward to any expansion on this subject you care

NanoVNA has a port renormalization function (called Port Z, see DISPLAY->PORT Z: 50) that allows you to see the measured S parameters at other port impedances. But since NanoVNA is only available for

Question top left S11 SWR 250m/ 1.891 can you explain what these numbers are, and how did you get the 250m loaded into the nanovna. Newie still leaning to use my nano Thanks`

Hello Roger, OK, understand now. And I had checked that the scaling was the same in both tests. Not that I expected they would be different:-) Thanks for clarifying. Regards...Bob VK2ZRE

Hi Gabriele, Be careful with the level output of the FY6900 as it defaults to 5v. This is well above what is needed and can damage sensitive instruments such as a tinySA and nanoVNA port 2. Phil g3ses

No need, the VNA generates its own test signals internally. 73, Don N2VGU

Try hooking it to the input of a manual antenna tuner with a termination on the other port, display a Smith Chart, and manipulate the tuner controls, it is quite an eye-opener. Then remove the

Above HF/VHF anything with a "UHF" connector involved is going to exhibit increasingly poor performance. In addition nobody that I know of makes a good-quality UHF calibration kit so you will have to

One other thing that might be taken into consideration is calibration of the NanoVNA. Are you testing the antenna, or the antenna system? When I want to test a new home made antenna, I calibrate the

Hi Folks, A few last comments and then I'm moving on. Today I modeled (approximately) Jeffs antenna using 4NEC2 and I made a few assumptions based on Jeffs installation. I built my antenna last night

I agree, I’m very new to all of this and it is a bit overwhelming but it is a great group, especially the pros! -- Sent from Canary (https://canarymail.io)

I have to say that my experience with this group is the best I have ever had. omg! Years of forums with arrogant responses, and mostly no help. Thank you all for letting me learn without the slams.

How good are those SMA to PL259 and SMA to SO239 connectors that are popular with some NanoVNA users? A back to back test was done using a NanoVNA-H4. Results attached.... Roger

Here is another test result. 10 feet (3 meters) of RG316 with SMA connectors on one end an 100 ohm SMA resistor on the other end. SWR was 2 at 1 MHz and then went through peaks and valleys with

Th trace labels are correct. The "SMA barrel" plot was done by attaching a SMA to PL259 adapter to the NanoVNA. Then a SO239 barrel was added and the RG 213 attached to that. At the end was a 50 ohm

Hi Mike, The application was not for use on an HT but rather for an outdoor installation using 3 radials and I wanted to see what the actual feedpoint impedance and SWR looked like as close to the

I like look at the swr in real life conditions. If one is using this as an antenna on a handle talkie shouldn't you simulate this by removing the radials.? Mike N2MS

Hi Gabrielle, The NanoVNA is a great tool for plotting frequency response and impedance characteristics of a filter and therefore no need to use your signal generator. Don

HI to all I own a FY6900 device, a cheap but very complete generator (mine is the model working up to 60mHz). Till now I've used it only with an oscilloscope, but I would like to employ also with a