What's needed to connect my NanoVNA- to my Android phone to use the
NanoVNA- Webb app? Just a usbc to usbc cable?
Martin K0BXB
On Tue, Dec 17, 2019, 5:35 AM Martin via Groups.Io <huyettmeh=
[email protected]> wrote:
So how do you measure inductance using it?
Could you tune a trap with it? How?
Thanks.
Martin K0BXB
On Mon, Dec 16, 2019, 5:30 PM Bob Albert via Groups.Io <bob91343=
[email protected]> wrote:
I too have been enjoying the amazing capabilities of this little jewel.
I now find that I can measure most parameters of passive components and
networks with excellent accuracy.
I can measurecapacitanceESRESLinductanceresistancedelayphase
angleSWRimpedanceself resonant frequencyQcrystal parameterscoaxial cable
parameters: characteristic impedance electrical length propagation
constant capacitance inductance lossesconnector capacitanceinductance of
wiresfilter parameters: pass band stop band matching impedanceantenna
parameters: SWR resonant frequency bandwidth spurious
resonances impedance line lengthspectrum analysis, sort ofCW frequency
Probably more, as I haven't exhausted the possibilities yet.
Most measurements come within a percent or two of that reported by my
expensive bridges. When there is discrepancy, I often can trace it to
the
use of a different test frequency. Testing electrolytic capacitors isn't
too satisfactory, as they are pretty much worthless at any frequency the
nanoVNA uses. However the readings can be useful, showing how important
it
is to bypass an electrolytic capacitor for high frequency.
I have two nanoVNAs just to make sure I can still use one if the other
breaks. My old fashioned fancy expensive boat anchor VNAs are still
handy
for frequencies beyond the nano's capabilities.
Anyone with questions about how to set it up to measure any of this, feel
free to ask.
Bob K6DDX
On Monday, December 16, 2019, 02:07:34 PM PST, DuWayne Schmidlkofer <
duwayne@...> wrote:
I recently updated my blog with two posts showing the measuement results
I have obtained using a NanoVNA.
one shows the response of a multiband HF antenna. The latest one shows
the response of a step attenuator I recently built.
I must say that I am more than pleased with the results I have been able
to obtain with such an inexpensive instrument.
It has been interesting following some of the discussions about
calibration and the math involved with the VNA, but I am more interested
in
what people are using it for real world applications.
--
DuWayne KV4QB
