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SO-239 connectors have terrible SWR about 1.2. If you don't use more than 100W power, it's better to use SMA. For more power it's better to use N connectors

Yes, I've heard someone else mention that. I can't quite think what causes it, *assuming* the firmware didn't change the format of the commands used. I currently just have the one NanoVNA, and as I

From: Rune Broberg It's Friday, and that apparently means NanoVNA-Saver 0.0.9: https://github.com/mihtjel/nanovna-saver/releases/tag/v0.0.9 ======================= Rune, Trying with the new

Hi David, I have seen situations where the NanoVNA had not changed frequency after being asked to do so in the about 500ms I've arbitrarily decided to give it. In this case, it would repeat the data

From: DMR RFpro, Firmware 10KHz-1500MHz. By default, when turned on, 50KHz-900MHz. Expand the boundaries in the frequency setting menu. Added dfu menu item, now it is not necessary to close the

Hello Rudi, when you start the program, it initially uses only the device calibration - that is, from the application point of view, it displays uncalibrated readings. I am sorry to see the crash you

This is a firmware based on the original Edy555 firmware with some small changes - Upper frequency limit is increased to 1500MHz. Be aware accuracy decreases rapidly above 900MHz - A "scan" console

Hi David, If you suffix a number entered with k or M, it will be interpreted as kHz or MHz. :-) The other set of fields automatically updated will be in Hz, though. -- Rune / 5Q5R

Hi George, thank you very much for evaluating my measurements. Attached is a picture of the "Standards" that I made. For my opinion these are very reliable. You can reconnect them and you will still

Hi I've compiled and flashed a pull request that was made to the master branch a few days ago for Time Domain functions on the device. The commit is still open on Github

Rune, Thanks for the update it makes the VNA more useful every day. Would it be possible to enter the start and stop frequencies as Megahertz instead of Hz. Its a lot of zeros to enter. Perhaps we

Hello Rune, Thank you very much for the lot of useful extensions in version 0.0.9. I have tried the Calibration and have a problem with it: 1. When I start the program nanoVNA-saver.py which

This is a follow up to my earlier post. The results of the measurements the nanoVNA gave me on the previous two amplifiers I tested gave me the confidence to check a third preamp bought "as is". It

It is clear that outstanding characteristics at frequencies above 1 GHz cannot be obtained, but this allows you to quite well see the resonance of the antenna at these frequencies, and adjust it. For

WOW!, I am so impressed that the range can be extended that far without hardware modification. Once I build up the courage to update the firmware, I will at long last be able to check my homemade

Thanks Rune, that works! 73s Holger, DF6DBF

Can you tell me if the original shell commands, used over the serial com port, are intact? If so, It'll be relatively easy to modify software for new ranges. If there are any new shell commands in

Eric, When the nanoVNA was first released I believe there was a 1050 MHz DFU that was pulled from the repository pretty quickly. Do you know why that release didn't make it, while the 1500 MHz DFU

Hold your horses Above 900MHz the 5th overtone is used so at 1500MHz the actual port 0 output is a square wave of 300MHz and at port 1 this is mixed with the 7th overtone of a 214286428Hz to produce

DMR Thanks! I just recalibrated it. And did run some tests. Obviously no hardware modifciations (change series - C's) have to be done.