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But then ARRL Antenna book says resonance has no affect on antenna performance. Hams like to operate antennas at or near resonance as that’s where drive point impedance is at its lowest value so

It would be a “IP network connection”, so both ends need to be “on the network”, whether by WiFi or wired. If you could set up one end as an “access point” and the other could connect to

Stan, I pulled out an assortment of cell phones last night. Three were Samsung Galaxy S4's, an LTE A910. The S4's should work even though Android 5, the TCPUART program says its good back to 3.5. You

This was discussed 4 years ago and the developer(s) decided not to implement it since you also have the touch screen and at the time, code storage on the original devices was at a premium. A few

Hi Bob, It is now at 295 and working good. Default it was slightly (100Hz) above 300MHz.

I hope you can make it work as easily as I did. My cable was a bit flaky, so the first few times I tries to connect to the vna, it said it couldn't connect, unknown device. But then I plugged the

I cant get the DFU driver to work. WIN11 opsys. I tried all the procedures in the "absolute beginner guide" but no dice. Any suggestions? -- John Mazzone AMVETS Post 826, Life Member. American Legion

Parallel resonance yields the most isolation between the antenna and the coax feedline. SHUNT PARALLEL RESONANCE = HIGH-Z OPEN SHUNT SERIES RESONANCE = LOW-Z SHORT Use your NANOVNA to prove that. Dave

Stan Dye, Thank you so much for that feed back. It helps. I have a few older cell's here to play with. Andy

It's not always small, Dave. The first plot shows VNA R & X for data from a ground probe using a two-port series measurement. The second plot shows the resulting ground permittivity and conductivity.

Andrew, I had some success with the app and method you referred to in your last post. Consider the following general setup: a) the nanoVNA is connected to an android cell phone using a usb cable b)

Why resonate??? Ray w8LYJ

Absolutely excellent paper: https://k6jca.blogspot.com/2020/07/the-y21-method-of-measuring-common-mode.html But given the small difference between the S21 and the Y21 method, I'll continue with the

I’d start looking for a combination of apps/devices that can tunnel a USB connection, or, alternately, the serial port over USB. The thing you hook up to the NanoVNA needs to be a USB-C host that

This seems to be using a android phone as one end of a serial port bridge: that is, it emulates the serial port over USB, just one would directly connected, and then on the other (PC) end, Trueport is

From a 4 year old post, I'm looking more to this: pgc1682@... 03/06/20 #11557 Hi, Now, I have good succes Nanovna WIFI mode with Android phone (Samsung Xcover 3). Nanovna connected to phone

I have H and H4 modified the same way. H4 is simpler as you only have to solder a connector and make an opening in the case. OTG has nothing to do with BT or with other solutions since the Nano is

Dragan, You obviously missed a few points. I'd personally like to hear more on it as the the application I'm looking for has not in fact been provided. What has been said - your provided solution was

Much simpler to just place the coil between the two ports and adjust for minimum |S21|. There will be a deep notch at self-resonance. I verified with a circuit simulation that the notch frequency

Hi, The DeepVNA-101 only supports Deep Elec firmware. The latest version is V1.0.5. It does not support FW written for the NanoVNA-H /-H4 by Hugen or DiSlord. HTH...Bob VK2ZRE