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What about connecting the amplifier to a dummy load thru an antenna tuner. Tune for minimum SWR. Then use the Nano to read the impedance of the tuner/dummy load? Joe

Is everything these days a YouTube "presentation". I'm not knocking what is presented, as the theory is sound and is rather reminiscent of the setup employed when measuring inductance with a grid dip

While an interesting measurement, unless the amp is powered, the characteristics of the active device will be way off. Now when powered (A learning experience from years ago) there will be quite a bit

I found this video, It seems like maybe a better way? https://youtu.be/3LOEhvFII6c Thoughts? Joe WB9SBD

IT would help to know what amp you are looking into with the Nano. I have been able to check and tune mine with the power off by manually closing the keying circuit

But this internal calibrstion format

Use console data command data 2 data 3 .... data 6

Hallo all of you, Do you know if it is possible to download the calibration files from the naanoVNA to the NanoVNA Saver? I understand NanoSave Saver can use the device (NanaVNA) calibration... . I

I think you need a low frequency to determine the inductance (as say you know).Say between 10kHz and 200kHz? The log(|Z|) curve in a log(Freq) should go up in a straight line (NanoVNA Saver can

I remove first message, for download last firmware need use file section /g/nanovna-users/files/Dislord%27s%20Nanovna%20-H%20Firmware Note: firmware pack contain zip archive for

First put an adapter on the SMA connector and set up the calibration.? Go to Smith Chart.? Select your frequency range.? Short the test leads and see how much residual inductance there is.? Then

Dave: That choke also serves another very important function; it will short the plate supply to ground if the anode coupling capacitor should suffer from leakage current or fail short, keeping you

I have a NanoVNA-H4. Using this, what is the best accurate way to measure the inductance of a coil? Joe WB9SBD

It does. *Clyde K. Spencer*

This is just a test to see if this group passes images. Thank You Joe WB9SBD

When you do your calibration, the device includes the cable length as part of the device. It doesn’t matter if you do the calibrations at the vna or at the end of a 20 foot cable, that distance is

Hello, Measuring coax length has been discussed in several topics. However I have a query. I have calibrated at the end of the short coaxes delivered with the Nano (in my case NanoVNA H4) about 18 cm

The coax need not be any specific length, just long enough to make a "good" measurement (low enough in frequency). Z = SQRT (L/C) applies to any length, so long as the L and C are measured over the

Maybe you are assuming that the characteristics of your RG58A/U are as published. There is no guarantee that coax from lesser vendors actually meets the published specification defined for RG58A/U. I

Dave - I'd first like to explain why the Smith Chart method is showing 51.067 ohms for the RG-58A/U in the SimSmith simulation. As you can see in the attachments of my previous post, no adapters are