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Yup - been telling folks here for months about how they can get 'free parts' from all the old stuff they have lying around. That's what this hobby is all about - hardware hacking and having fun doing

Really? Read the latest Oct 2nd version of the User Guide in the files section on how to convert HEX or BIN files to DFU so you can update the flash on your Nano.

What is the update procedure? Bob

Look for?? edy555_nanovna_v2.2-sept-30-19.dfu? or similar. That's the bugfix version. You can always go to the TTRFTECH github releases page: https://github.com/ttrftech/NanoVNA/releases Read the

Okay - snooped around the wiki, yet I still couldn't find edy55_bugfix (10-1-19), for example.

I got the switches off a scrap set top box PCB, but you can buy them almost anywhere. They are 6mm x 6mm and come in a variety of button heights. 4.3mm is flush with the PCB, 7mm sticks out slightly,

Wow Bryan! Thanks for that in-depth piece of work! I use a Blackman window, which is created by putting in "np.blackman()" ;-) So I can use whatever window function is the most relevant. These ones

where did you find the switches?

Always takes at least a day before it appears in the stracking

Actually, if you check, you will see that ONLY the shipping INFO was received by China Post - not the actual item. This is what my eBay info says: ?? Shipping status Shipping info received

29 : ann : our nanovna will be evaluated tonight

according to ebay my order is just shipped. It was marked shipped with a a tracking number, so I can track the status of the shipment. Henning Weddig Am 03.10.2019 um 18:56 schrieb Larry Rothman:

Paul, I can't tell from the Smith chart plots you have included what might be wrong What does the 68 pf capacitor show at around 1-10 MHz? At low frequencies, like 50 kHz, the Smith chart should show

I just tried looking at the seller's eBay page and they no longer have ANYTHING listed for sale. So - let's see how this all plays out at the end of the month so yes, the wait begins......

Hi All, I got fed up with the Jog wheel sticking, so today I took the plunge and fitted some PCB mount push buttons behind the front panel (see attached). The wiring is the same as the push button mod

Paul, Make sure you calibrate the Nano properly, which begins with using the RESET button on the calibration menu. At the same time, ensure you're calibrating out the cables you're using - that means

After thinking about this some more, I realized that the stop frequency I used was 300MHz. This is obviously way too high. When I used a stop frequency of 1MHz, the values started to make sense. ( I

There is - it's the NanoVNA's WIKI

To now there are two options * $28 for a board that will wear out after about 20 connections. (Date from Hirose datasheet) * $6 for one which will last 500 matings (Generally accepted lifetime of

All this technology for fifty bucks?