开云体育

Sorry, you had a bad experience. I found my NanoVAN useful. Before I purchased mine I made sure it was a good clone of the original NanoVNA. Plus, the unit I purchased was the same one that another

I am finding that watching YouTube videos on the NanoVNA over and over again it is starting to sink in how to use the many features. Just take time to read and re read the instructions and watch and

Well actually the difference between 'dumb' and 'normal' isn't that great.? All you need is an Elmer to show you the ropes.? Maybe even show you twice.? Then you will probably get excited and learn

I would like to see somebody make a "DUMB MODE: for the NanoVNA, and THEN it will really hurt the sales of MFJ analyzers. The "DUMMY" mode would be for peole like me, who are "dummy's"!!! ;-))) It

If you want a TDR, there's nothing like a proper TDR. I have a Tektronix 7904 with the 7S12 plugins (25ps resolution), but it's fragile and I don't use it much. You can measure the impedance of

There's a few things going on, but at a very low height (and the asymmetry) you would be experiencing substantial CM currents. This makes the coax part of the antenna, thus its length, and also since

Thanks I apreciate the help with this stuff. Regards Colin va6bkx

Ok, I’ll have to go re-read Heinlein’s “And He Built a Crooked House”. DaveD

Unless they get really, really, REALLY HOT....

35j. Antennas may radiate RF, automotive radiators never.

I don't know how to do it on an iphone - I will have to find out if its possible using the gmail app on an iphone. Dave

Dave D.: Ooops......31 exists only in the 12th dimension of Quantum Gravity Theory and its brane does not leak into other dimensions. Dave E.

31 is there but is just an imaginary number!

31 should be “Vector Calculus”. DaveD

Nuts, I can't resist just one more: 35: a 1:1 SWR represents a resonant antenna, and, therefore, a highly efficient radiator wrote:

Hi all, I decided to make up this circuit and test it on my NanoVNA. With just the L and C, the circuit showed resonance at 9.2 MHz. With R=sqrt(L/C) inserted in series with both L and C I scanned

9: Ohm's Law is only a theory 10: open wire, parallel line, window line as a transmission line radiates as part of the antenna 11: common mode chokes are not common and should not be used for anything

Woo-doo (sic?) electronics 1. antenna tuner tunes the antenna 2. more radials on vertical (1/4 wavelength) antenna is better 3. end fed antenna needs counterpoise 4. no need for balum on coax fed

Dear group colleagues, Sorry to disturb, maybe the topic is somehow out of the range of interest. I have seen the NANOVNA post of OE3UWW. Dear sir (Helmut Wabnig OE3UWW), please contact me to the

Hello. Thank you. We agree on that, of course. There was no need to claim this belief, because this was yet another paper of calculations, far distanced from VNA reality, which is most unpleasant in