No mention has been made on a lot of the installs as to if they installed via the store, or an apk. The store looks at device type (tablet, phone, etc.), Android version, and perhaps other things to

Jerry, You're stuck on this point but it's simply not true. It's not the kernel. The issue here is the API level used to build the app. That's it. It's the API level. When the Play Store says that

Sure, I'm an engineer. I've been using professional VNAs for some 40-years. I salute the creators of the NANOVNAs! It works just like the professional units and quite intuitive to me. Keep it up.

Well, first of all, Linux is only one OS out there, so it is not really a great reference. There are many other OS's out there, several of which I've worked on, from embedded systems to

Great references, thanks!

About differences TDR and VNA

Maybe. It kind of depends on the amplifier - some just fold back when the voltage at the output terminals gets too high (to protect the transistors). That is, the protection circuit on most amps

OP: Your thoughts are legit, but you will face lots of opposition from existing users and from the developers, as these VNAs are designed to have every possible feature and are built to perform just

You'll probably get along much better with a RigExpert analyzer. I use this one: https://rigexpert.com/products/antenna-analyzers/aa-230-zoom-option-ble/ and I think it's what you're looking

A developer named Reald did make a big font version with SWR display about 4 or 5 years ago and you could try that out and see if it works for you. The links are in archive posts. A simplified menu

Yes it is the transmission line that has the standing waves on it. However as I stated in my previous post the transmitter power amplifier is designed for a specific load which is 50 ohms for ham

Yes, it is not labeled 'TDR' in the menus. Instead it is appropriately labeled 'Transform', since it is not a true TDR, but simulation of a TDR via Fourier Transform. On the menus: Display ->

Does the nanoVNA have a TDR function? For some reason I thought it did, but I can't find it in the menu. Zack

It has long been established that R&L electronics is one of the most reputable sources of the NanoVNA, if not THE most reputable source. This link brings up a search on all the variants of the

The Tx does not see an SWR it sees an impedance, it is the transmission line that has the standing waves and that must be based on the impedance of the line NOT the load that the Tx 'likes to see'.

I think some people are missing the point, or just do not want any changes to the way they are doing things. Which I said is not what I want to do. When I buy something, I learn everything about it.

Bottom right hand corner of menu indicates it is for Hugen’s (Zeenko) -H and -H4 with older version 1.1 firmware by DiSlord

I said that they are a layer away - apps go through the system shared libraries to access kernel functions in most cases, so reallynare well isolated. 36 years in *nix as a professional, including

Tim, I've worked on multiple APIs in the 50+ years I've been programming (including as an IBM employee) on everything from MS-DOS 1.0 to mainframe operating systems like MVS. Yes, few applications

Of course, given that they’re not resistive 50 ohms on both sides, the fact that there’s a “mismatch” might not be a big deal - For instance, a DC power supply has a 0 ohm output impedance,