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Adding to my reply: The reactance of 470nH at 50kHz is barely 0.15?. You cannot expect the NanoVNA to measure that accurately. You need at least 5MHz or so to bring the reactance up into a range

Ed, The value marked on a component is supposed to be valid at a very low frequency. As soon as the frequency goes up, parasitic effects become increasingly important, so the actual value of the part

To over simplify a bit, the nanovna is a transmitter. It also has a sensitive meter circuit inside, which would probably be destroyed by power from an external transmitter such as your kit. A poor,

The short answer is NO you still need a dummy load or an attenuator that can handle the power from the transmitter. Then VNAs are not really designed to do spectral analysis of transmitter output.

This might be a dumb question, but I wanted to know if you can use a nanoVNA to test a transmitter built from a PCB kit (like instead of a dummy load). I realize VNAs are usually used for antenna

Hello Ed, Curious, if you go to item13 on your card, take that reading at 50 kHz and SUBTRACT the L value from the reading at 50 kHz done at item8... Do you get 470 nH? A reading of 700 nH at 50 kHz

HI, I use a different approach when I need to know the exact value of inductance or capacitance, I build up a simple jig on a PCB mount connector with a series 50 ohm chip resistor then put the

Not exactly like this, but see: https://www.aliexpress.com/item/4001204244685.html and

There is always some parasitic C around, which usually "reduces" (or cancels) some of the inductance - sort of the opposite of what you're seeing - but in any case, the amount of cancellation you get

Alan, thank you - that fixed the issue! Dave

Does anyone know of an SMA equivalent to this board? I expect it would be an order of magnitude more expensive, but u.fl connectors are only expected to live through <10 insertion/removal cycles. I am

Thank you for the responses. I think I was unclear. What I am trying to understand is how one relates the marked value of a component to what nanovna shows. Using DL5FA’s item 8 inductor, my devices

The inductance won’t change with frequency (to a first order approximation and especially over a somewhat narrow range). What will change is the reactance with respect to frequency. XL= 2*pi*F*L XC=

Roger, Thanks for the suggestions. I have updated the firmware in my nanoVNA to v1.0.45 and everything is working fine now. I would like to try the new NanoVNA app (Windows) by OneOfEleven, but I'm

The inductance will change with frequency.? I use the Smith chart and the resistance and inductance are displayed at the marker frequency. Bob

Concerning how to measure capacitance and inductance on the RF Demo board (or any capacitor or inductor), reference /g/nanovna-users/wiki/16592. I can get the curves shown in this

Why not try the latest version by DisLord (1.0.45) in the files section of this group. Some nice enhancements and it works with the new NanoVNA app (Windows) by OneOfEleven which has more features

Sweeping normally. This is not the problem

Roger, I wanted to try the new features in v 0.8.0-20200620 released on Jun 19, 2020 by edy555 including the contributions of DiSlord. I posted looking for a solution and if it is a bug, I wanted to

Hello Frank, I do not have a BOM, but some documentation: /g/nanovna-users/wiki/16592 73, Rudi DL5FA