Re: Measurement correction for Zc Coax caracteristic Impedance
Since you asked what we think - I think this:
For amateur radio use, there is no reason that I know of to have high accuracy in the measurement of cable impedance.
It may be fun for an intellectual
By
Stan Dye
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#39868
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Re: Measuring inductance
for my saa2n i have cal standards with plugs (male connector) .. but i wanted also female (so i can calibrate at cable end with a plug without double female needed)
so i took 3 N sockets .. one with
By
Siegfried Jackstien
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#39867
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Re: Measuring inductance
QUOTE: ....a DIY fixture can be made using a female SMA connector with its
centre conductor sawn to the same level as the dielectric. .....
***
You can buy such a connector with no need to
By
W0LEV
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#39866
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Re: Apologetic Intro Message
Wanted to add another "thank you" for posting that information. I've had nanoVNAs since they first emerged (2019?), and a ham friend recently gave me one dated from that era. Had never been updated,
By
Bruce KX4AZ
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#39865
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Measurement correction for Zc Coax caracteristic Impedance
Hi
DiSlord Coax Zc measurement function, already installed on H4 1.2.40 firmware, seems need to measure C0 capacitance @ 100Khz and the f0 first coax resonance frequency (Hz) and then we
By
Team-SIM SIM-Mode
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#39864
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Re: Measuring inductance
Please post the .s2p file. I'd like to calculate results using the Y21 method that suppresses stray, shunt capacitance in the test fixture.
Brian
By
Brian Beezley
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#39863
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Re: Measuring inductance
Indeed, the HP16092A is the butt end of an APC-7 connector, with just 3mm of the centre conductor protruding beyond the insulator. It has an advertised max freq of 500 MHz.
I agree with Dave that a
By
biastee@...
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#39862
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Re: Am I in the right track ?
Hi Dave,
1- I've upload the Kicad project as a zip file.
2- I also upload a PDF showing this part of the schematic and layout with different zoom levels in case you can't download or open the Kicad
By
Nico
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#39861
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Re: New user (owner) of Nano VNA
Howard,
I used the SMA to SMA jumper cables which came with the Nano VNA and
calibrated using the open, short and load connectors (
https://youtu.be/qb38VI-9tV0). Then I used an SMA to SO239 adapter
By
Jon
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#39860
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Re: New user (owner) of Nano VNA
Well, simply put:
First, do an OSL calibration for the range you want to use, and store it in
one of the memories.
Then select Display > S11 > SWR. It should then display the SWR of whatever
is
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Zack Widup
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#39859
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Re: New user (owner) of Nano VNA
"NanoVNAs Explained" by Mike Richards G4WNC is the goto book you need,
available from a number of Internet shops.
73 DE G4SDW Gareth
By
Gareth Evans
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#39858
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Re: New user (owner) of Nano VNA
Welcome to the group!
The archives of this group contain much good information including videos
and a guide for the VNAs for DUMMIES. Those resources should get you
going.
Dave -
By
W0LEV
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#39857
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New user (owner) of Nano VNA
Hey guys
just got a nano VNA. it is a "seesii, nano VNA-H.
I need some help in setting it up to see the SWR on some antennas. I have gone through the various manuals and the one that came with it,
By
Howard
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#39856
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Re: Am I in the right track ?
1- Would you recommend to clean all 3 elements of the matching network, as
I don't know which component will go where ?
Can you send me a schematic of the matching network? Possibly I can figure
it
By
W0LEV
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#39855
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Re: Am I in the right track ?
Dave,
Thanks for the hint.
1- Would you recommend to clean all 3 elements of the matching network, as I don't know which component will go where ?
2- If you look at the trace between the
By
Nico
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#39854
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Re: What we can do more with TinySA ultra
Yes. The TINYSA is highly useful for frequency domain measurements.
As well, the NANOVNA is equally useful for impedance domain measurements.
As well, an o'scope is equally useful for time and
By
W0LEV
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#39853
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Re: What we can do more with TinySA ultra
The calibrated signal generator output on the TinySA Ultra is a great tool to calibrate or check your S meter and also very useful for determining and/or checking your receivers sensitivity. It also
By
Donald Kirk
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#39852
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Re: Tdr
Hi James , the nanovna H H4 and LiteVNA64 , whith the recent FW
has the TDR function but named TRANSFORM .
You can reach the relative menu , tapping the DISPLAY >> TRANSFORM >> TRANSFORM ON.
In the
By
Maurizio IZ1MDJ
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#39851
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Re: What we can do more with TinySA ultra
They are completely different instruments, used for completely different
purposes.The NanoVNA is a vector network analyzer. It can be used to
measure resistors, capacitors, inductors, transmission
By
Zack Widup
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#39850
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What we can do more with TinySA ultra
Hi
As a hamradio operator what can i do better with TinySA ultra then NanoVNA H4 ? What kind of measurement with TinySA can be really usefull for antenna, filtering .. around hamradio activity ,
By
Team-SIM SIM-Mode
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#39849
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