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For the forum members that are unsure of the safety when charging their Nanos, try to obtain a low-current PolyFuse and place it in series with the positive lead on the battery. You can find info on

Erik, You really do not want to screw around with a swollen LiIon or generally any Lithium type battery that is beginning to swell. All they are good for is taking them outside in a wide open area,

Not seen a swollen cell catch fie ...yet, but it is rumoured. More likely to cause physical damage to the VNA, or leak nasty stuff that yu might not want to get on your skin or inhale. It should

Should I be worried? -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK

#78'' : #78' was re-corrected : https://www.op4.eu/code/s2p.png - #78' : #78 was corrected : https://www.op4.eu/code/s2p.png 19 November 2019 - /g/nanovna-users/message/7185 #78: on

OK I started testing the charging current on my NVNA. Typically 650ma on an empty 400ma supplied cell, oh dear !!! I wasn't expecting that to be honest, I really did assume that there would be some

Tnx Alan This morning I made new cables with rg142 and I think the double sheild helped a lot... once again tnx and I am getting happier more I discover those little wonders! Richard

Well, no surprise. It was a scammer. Got Ebay refund yesterday.

Please DO NOT USE any LiIon battery that is beginning to swell !!!? Recycle it.Once a LiIon battery is starting to swell, its internal chemistry is unstable.

I assume the YES is the answer to an antenna is under test. if the antenna physical dimension is not much larger than the vna and not current de coupled from the port, than the vna is part of the

I figured it out! After earlier posting, I remembered I have a wall charger for those Galaxy S3 batteries; it uses contacts 1 & 3. And then reading the label on one of them, remembered the NFC

See here for latest discussion: /g/nanovna-users/message/7252 -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik,

Sorry if this has been asked before but I mistakenly posted this in the NanoVNA-F group instead of this one. Has anyone thought of implementing port extension functionality with on the fly

I suppose one way of seeing how the charging system works is to use an inline USB meter like this https://www.youtube.com/watch?v=E4ZrKmmMafM I don't mind sacrificing my own cell for this test,so when

Yes

My unshielded "worse" clone is quite immune to proximity effects. In fact, the only time it became a problem was an SMA cable gone defective, presumably a poor crimp between connector and cable braid

What are you measuring, an antenna?

Somehow got the wrong photo. Here is the correct one: /g/nanovna-users/photo/0/416?p=Created,,,20,2,400,0 and /g/nanovna-users/photo/0/417?p=Created,,,20,2,400,0

NOTE: the order of the contacts I show below are NOT in any particular sequence!? If you have the device that battery came out of, you can check which contact is ground and which is positive.

Bonjour ,Hi i have been searching in old topics what i am experiencing and i did not find anything. So did you ever notice that the reading of S11 is pertubated if you touch or not the nanovna. even