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Yes, if your SAVER is miles outside of your intended cal range, you need to do a cal on the native device first. I've never had that problem, so I wouldn't know. I've used professional VNAs for

They did that to avoid some problems that require extra coding. And since you can do one calibration from 50kHz to 900MHz, and save it in slot 0, you never have to revisit it. The problem is that

Thanks, Stan! This is definitive and helps me understand what to expect. I'll try nanovna-app, to see what that's about. I'm a little surprised that nanovna-saver depends on the H4's calibration

From the nanovna-saver github readme (https://github.com/NanoVNA-Saver/nanovna-saver): Quote: Calibration Before using NanoVNA-Saver, please ensure that the device itself is in a reasonable

And thank you, Stan, for your feedback! 73, Dean W8ZF

Thanks Dave, So if the H4 internal cal is *independent* of the nanovna-saver cal, exactly what are you clearing with nanovna-saver's "clear all cals"and when would that be necessary? I ALWAYS either

No. They are independent. Dave - W?LEV [email protected]> wrote:

Dave, correct information, but you did not address his real question: Is the nanovna-saver 0.4.0 calibration dependent on the nanovna internal cal? I was taught (back a couple of years ago) that

QUOTE: ........ but what happens when the sweep range is different for nanovna-saver than the H4's stored cal? Are results invalid, or are they interpolated (assuming nanovna-saver is sweeping in a

Thanks for the replies. There seems to be some disagreement on #2. Appparently for some versions (maybe all), the cal in nanavna-saver IS dependent on the H4 being in a calibrated state before the

QUOTE: 1) What is the persistence of calibration done through nanovna-saver? I.e., does it persist if the USB cord is disconnected and the H4 is taken for mobile measurements? Any cal done within

#2 is correct. The calibration done in nanovna-saver is solely in the computer. It can't be saved to a slot in the nanovna, partly because -saver has more sweep-point options. You need to do the

I use nanovna-saver with my H4 because it aggregates several useful functions for operating, storing, printing, and exporting measurements. I am confused about the calibration done from

Surprised you said that. Only takes about 2 minutes for the whole procedure. And if you don't care about S21 measurements you can skip the last two steps and only do SOL (short-open-load) Roger

If you use SAVER on a PC or laptop, you can store your verious cals on those and access them later for use. Calibrate once for each frequency range and setup.....store on a "big" PC........recall for

New here. Any tricks to make calibration easier? It is a real hassle as it is.

Re: rain gutter antenna I also have one rain gutter antenna it's about 50 ft long and 8 ft above ground level. For one 40-meter freq i use a 1:1 balun (indoor 10-meter-long radial) plus a matching

Out of a major forest fire, insurance put us up in a large apartment complex for 2 years. I chose the 3d floor - the top - for RF reasons. Of course, the apartment complex came with its manditory

* * *How good can a RAIN GUTTER be on HF bands?* * * *Since moving to a "retirement community" last year I have been searching for a reasonably good HF antenna.* *I have tried a few 10-20 ft

Clyde, in HTs used for their purpose, which is portable communications, the body of the HT, and even the body of the operator are all part of the antenna. If you mount a rubber duckie directly on a