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It will not be perfect since as you pointed out the hardware (bridge, ...) is 50ohm but at least if you calibrate with a 75ohm reference all values displayed will be shown as referenced to 75ohm at

Just to be sure. Can you just change in the code this 50 into 75ohm? Everything (S11 and S21) in the NanaoVNA is measured using a 50 ohm (internal in the device), Perhaps one could recalculate to

code obtained with: git clone https://github.com/NanoVNA-Saver/nanovna-saver.git

addendum to my previous reply ... For those who are using NanoVNAsaver, I had a quick look into the source code for place(s) of hard-coded Z_0 = 50 ohms. I believe (but have not tested ...) that if

those values are correct, your VNA will display values in a 50 ohms world. It doesn't know that you transformed to 75 ohms and calibrated with 75 ohms at the other end of the pad. What you have to do

Roger that... ..and 10-4 It is obviously my fault - but you did not say that If it bothers me that "Johnny still cannot read " I should NOT be participating in forum . I believe that was a title of

So I would have to ask "seller" - is your version "new" and " does it have I/O pins suitable to connect to bluetooth module?" Years ago I purchased SDR hardware which required soldering to SMD IC

Best to start off reading this excellent tutorial.... /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_6.pdf Roger

Also remember that you must press the reset menu item each time before a calibration , otherwise it doesn't take.

If you use the save under the Calibration menu, it prompts you for a memory slot #. If you use the save under the Config menu, it doesn't I did notice that. How do I make sure I am saving to the

I did notice that. How do I make sure I am saving to the memory slots and not the general config menu? I have a feeling that is what is going on. Yes, I figured and that is how I did it, but the

Thanks Larry for clarifying. I am going to play with it in a minute. Chris KQ6UP

Chris, Memory slot 0 is the startup memory that is recalled when you turn the nano ON. There are two locations where you save on the nano: the memory slots are used to save freq, marker, scale, trace

I did my call from 1-15Mhz I believe. I tried to call for the range that I was going to be using, but my cals don't seem to be "sticking" anyhow. Not sure what I am doing wrong. Chris KQ6UP

That *is* odd - I've done cals with 25 or 100 ft of coax (as well as a foot) and it seems to work ok.?? One thing I did get caught, by, though, was when the cal frequency range didn't match the

Hello, Chris KQ6UP in SoCal. I wanted to do a calibration with some short coax going to a test fixture for a LPF. I was surprised that calibration did not zero out the capacitance as the short open

The VNA has a fairly narrow band receiver, so it will sweep through the BT frequencies (which are around 2.4 GHz, so well above the original NanoVNA frequencies, but within the range for other similar

AMEN, Jose!!!!! I've asked myself the same question. Bluetooth has no place inside the NANOVNAs or the Tiny SA, for that matter. Dave - W?LEV wrote: -- *Dave - W?LEV* *Just Let Darwin Work*

Why would one place a radio emitter inside a vna case is above my comprehension

Since your board has no P3 connector there is no convenient place to attach the Transmit (Tx), Receive (Rx) power and Ground Connections from a Bluetooth module like an HC05. For your NanoVNA board