The lower scale setting was it. Thank you!

Hello all I know this was on an earlier thread, but I was wondering what the purpose of the correct button. When toggled, it shows two different results of an SWR reading for same band. I was just won

I took the easy way out... and used a clamp on RF ammeter to measure CM current.

You don't need those resistors! Never......NEVER......trust YouToob presentations from amateurs. A few are good but many are just poor in technical content and execution. With the "ugly balun" which i

** It is a French expression to indicate that there are a multitude of unbalanced / unbalanced impedance matching solutions. Already the expected transformation ratio will have major consequences. Thi

I take a known length of the coax of the same physical batch and do a TDR and see what the measurement is and physically measure the sample coax and then can change the velocity factor to equal the ph

I'm not sure if this is related to your application issue, but when I do sweeps of my impedance transformers and antennas I noticed that the markers change from what I manually set to whatever is the

W1RS, yes I remember the slotted line from Lowry AFB PMEL school late '60s. The HP 715 klystron power supply, and modulator. the HP 430C power meter with bolometer mount, you had to bias it, make sure

If you would take your existing board and use a sharp knife to remove the excess copper you might get a better result, or at least see what changes occur. Trimming the connector pins back will also he

One seldom achieves the "advertised" or modeled pattern, especially at HF frequencies. VHF, UHF, and µwaves are whole different stories. HF patterns rarely conform to expected results except for insta

Good work Roger! I spoke with Brian on the phone myself a while back and he was able to very clearly and succinctly convey his thoughts on this matter. I concur with your writings here fully :-) Thank

Great, thanks!

Check THRESHOLD value in config-expert settings, Must be 300MHz But better reset config anyway, also in expert settings

Suggestion for a pass/fail test jig of the bandpass width and ripple of crystal filters and other components.

Folks, I know that EZNEC has been used by a number of NanoVNA forum members for antenna simulation - BUT as of January 2022, the PRO/2 version will be free as the author of the application is retiring

Not just amplifier compression but compression or even possible damage to the receiver port due to excessive power. 73, Don N2VGU.

I had another quick look and I think my analyser is capturing a brief (120us wide, -10dBm level) spurious output event at 32MHz on this sweep. However, sometimes it captures the real 32MHz hop and it

That's a great idea to mark it... I have a few telescopic antenna's I use on scanners, and always just guesstimate.

Was just over reading Roger’s excellent thread on using a VNA to examine discrete components. I figured I should be clear with everyone that the method I presented below is not and was never intended

A video I did up last summer on how to use the nanoVNA to measure the resonant frequency of crystals. The intended audience is those who are not wanting a complete and exhaustive characterization of c