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Thanks!!! All ok now

I don't know if the STM32F303 is pin-compatible with the existing chip, but I did check earlier that STM32F104 should be a direct drop-in, and offers slightly more RAM (20kB) and 128kB of flash memory

Hi Reginald, in my experience, you can run the serial port at whatever speed you desire (within reason, I'm sure) - it is a USB serial port, and I'm happily running it at 115200 in my software with

Hi Harry, it certainly needs both error handling, and documentation! ;-) It was getting late and I wanted it released. The calibration buttons require you to run a sweep of the standard in question

Hi Rune -- Well, I ran pdb to look at a few things in Calibration.py -- gm1, gm2, and gm3 all come up with the same values, hence denominator is 0. I didn't have time to see why s11short, s11open and

Thnx, Alan. I saw someone introduced 75Ohm load side's VSWR with 50Ohm matched VSWR measurement gear - Easy formular, but it does not suitable for measure sourceZ I think. Also I already thought

Hi Tom, I should probably get the document out in front of me and minimize the risk of trying to fix my errors. However, let me see if I can address any misunderstanding from your email message. The

Do not try to measure the source impedance of an active device using a VNA. It is possible but it is not a straight forward measurement and requires additional devices to complement the measurement.

http://www.miklor.com/COM/Review_HD1.php AND... Some of FB group users reports/Vendor official account also confirmed '50 Ohm is theory. Anyway our stock antenna matched our transceiver. If you want

Many thanks Rune, Oristo, hwalker, and Larry, for your advice! I just got in (spent the day building wood-cribs and stacking oak in preparation for winter), and I've been able to do some very brief

I'm doing a little research on this issue with not having enough space on the chip. From what I can make out in this thread, the firmware is using ChibiStudio which uses gcc as it's base compiler. The

Hi Rune -- I just tried Calibration in your latest. "Through" and "Isolation" are greyed out. When I look at the code, it appears the buttons are there, but there doesn't seem to be any code to deal

If you need it, I can send you a NanoVNA with the STM32F303CCT6 installed. hugen

Greetings All, I would like to thank the authors of the subject document which IMHO clearly describes how to get started with the nanoVNA - it is a very helpful document! I think I noticed a minor

Hi Rune -- Just tried your latest version (0015Z - Sept. 4, 2019) and it looks quite nice! Haven't tried the latest features you've judy added yet, but your app is looking really good to me. I much

One could always use the serial port to control the nano via the console commands. I would expect that the speed could be raised to 115200 baud from the 9600 baud default. It might require disabling

Hi Jeff, It sounds like you need to add the path to the Python install dir to your PATH environment variable. You can google how to add it as I'm not sure of your operating system version. It's not

Please add the console RS-232 parameters: 9600 8N1 XON/XOFF to the information above.

It was only open long enough to pour some out and I tightened the bung with a wrench! The seal on the bung was obviously not very good. I'd probably not opened it in over 10 years. It was brown and

Jeff, Its been a while, but as I recall it is recommended that when you install Python that you should check the box to add Python to your path at the end of the installation. This will allow you to