开云体育

If you like to build a clone from the sdr-kits *Testboard*, just use a FR4 veroboard 35 x 27 mm and solder 7 x 7 IC socket pins and 2 SMA female plugs with a paper model, what you can get from the web

https://www.iata.org/whatwedo/cargo/dgr/Documents/lithium-battery-shipping-guidelines.pdf W5VZB

Here's United Parcel Service's reference material about shipping Lithium batteries: https://www.ups.com/assets/resources/media/us_lithium_battery_regulations.pdf Covers air and ground, and lithium ion

Ignoring random errors (noise, repeatedly of connectors etc), the standards should look perfect opens and shorts, i*f that is how they are defined. *You could use an SMA plug with a few cm of wire and

To check if I understand this correctly I ask, There is also a phase difference between reference and difference voltage from a bridge. I should have remembered that. And now they are mixed to 5kHz to

I may start this as a new thread titled Measurement of Components... again. In any case, I put together the nice n' easy alligator BNC connector interface which is easy to deal out. The part under

Mike, see attached for a first sneak peak of what I'm working on. I think I'm currently under-estimating the roll-off by measuring it from the -6dB point and to the end of the data. Is there a norm

Rune, Thanks for your kind comments. Here are some suggestions regarding your 4 questions above. 1) What window do I recommend? A Blackman window has very low peak sidelobes (< -58 dB) which is

[email protected]> wrote: Same here, but clicking on the tracking number says that the label has been created, but not actually shipped yet. If this was $200 I would be a bit more concerned, but $20

No problem. There are many names around for the same file.That is why I uploaded them in the files section and dated each one. Forum member ORISTO has created a WIKI page that describes the various

Thanks !

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