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the calibration is fine,it works with the is it sharp vna fine just not the saver one

Hi Eric and Ady There is also the lazy way if you know what type of cable you have between equipment and the antenna Use a time domain method to find the cable length (You need to know the cable VF)

Hi pgc1683 (do you have a name or are you an alient ?) I have repeated the measurement for sending you some s1p files. I have also made a report where the measurement are seen and exposed to ZPlot.

Thank you!? I will inspect my unit and if it's similar, I will order the LINK. Bob For completeness? (from https://je6lve.tom-system.com/archives/1066): nanoVNA <——–> ST-LINKV2 SWDIO

A super big thank you to all involved for the manual. Very special thanks to cho45 and Larry !!! 73, Hans DJ7BA Von: [email protected] <[email protected]> Im Auftrag von

For completeness (from https://je6lve.tom-system.com/archives/1066): nanoVNA <——–> ST-LINKV2 SWDIO <———-> ②SWDIO SWCLK <———-> ④SWCLK GND <—————> ⑥GND NRST

Larry, I will check to see if my board is like that.? If so, I can get the ST-LINK and have a fully working unit.? If not, no big deal. Thanks for your efforts and patience; you have been a great

Bob - P2 is at the edge of the PCB and can only be used with the ST-Link dongle.

Where is P2?? Which connections go where?? I have removed the USB socket and can't figure how to get it back. Bob

Bob, have a look at this photo: /g/nanovna-users/photo/0/974?p=Created,,,20,2,960,0 You're connecting the ST-Link to P2 on the edge of the Nano's PCB. You can pick up the ST-link

Larry, I don't see how to attach the ST-link but for $2 it might be a solution.? Can you provide more info? As for Aliexpress I have been having serious trouble with them.? The latest involves a

As yet I've had no issue with the current USB connector used... but its small and fragile. On another piece of gear I've had issues with the mini and micro USB connectors and finally removed it with

Fixed the url

Bob, Buy an ST-LINK adapter for a few bucks from this place where I got mine and you can read and write to the micro using the edge pins. https://www.aliexpress.com/item/32684040486.html? Works

I like the idea of soldering a cable to the board.? When my mind is sufficiently clear I will take a look and see if I can identify the appropriate places on the board. I am not optimistic because

There are two losses reported when measuring S21. One is reflection loss (mismatch) and the other is losses in the conductors (I squared times R ) and dielectric. If the transmission line is coax

Thank you Erik for quick answer. Actually I wanted at first to know the antenna impedance, but having also info about the feeder seems very interesting. Thank you also Rune for the very useful

I'm not an expert but this is what I understood: Zplot is able to determine the impedance of the feed cable (if different from pure 50ohm) It also is able to calculate the frequency dependent loss

Dear Erik, regarding your method: "Using nanoVNA saver you can measure your antenna feedline with the antenna disconnected and replaced with a OPEN/SHORT The resulting two touchstone files can be

Dear pgc1682 The nanoVNA is a wonderful example of how to do the best with the least at a price point everyone can afford. Has this lead to compromise? Yes. example is the size of the screen or the