Re: Interesting phenomenon
Zack W9SZ wrote:
I thought I'd send this e-mail as a curiosity of something I discovered. If
you're trying to measure something with the NanoVNA and there is a strong
transmitted signal source nearby
By
Garry
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#32955
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Re: Interesting phenomenon
Hi Zack,
You said ¡°I believe the AA-600 generates a stronger signal that is sent to the DUT. I have suspected this for some time¡±
The AA-600 output level is specified as approximately-10dBm into
By
Donald Kirk
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#32954
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Re: Simple SWR analysis
#nanosaver
Not sure about the obfuscation, but I guess everyone needs some sort of alter ego.
By
Geoff Peters - AB6BT
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#32953
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Re: Simple SWR analysis
#nanosaver
Right!
Anne Ranch is a senator (Yeah sure...???)
Look it up.
By
Geoff Peters - AB6BT
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#32952
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Re: Simple SWR analysis
#nanosaver
And his name is Vaclav, not Anne.
Mike - M0MLM
------------------------------------------------------------------------
*From:* Clint Sharp [mailto:cjaysharp@...]
*Sent:* Sunday, 4 June 2023
By
Mike Millen
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#32951
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Re: Simple SWR analysis
#nanosaver
You posted incorrect information stating that the software was no longer
updated, I did the simplest thing, went and looked at the repository and,
sure enough, it proves you wrong.
'Connecting' to
By
Clint Sharp <cjaysharp@...>
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#32950
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Re: Interesting phenomenon
This is where the professional devices excel.? I have an Anritsu SiteMaster and a CellMaster that have the capability of ignoring these extraneous signals. The Anritsu devices send a coded signal up
By
Joe
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#32949
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Re: Interesting phenomenon
One of the lesser known issues is transmitter sideband noise. No carrier is
perfect as it generates noise eithe side of the carrier and if the carrier
is very powerful so the sideband noise is
By
Clyde Spencer
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#32948
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Re: Interesting phenomenon
example measure a 40m dipole and have a strong 41m radio station close .. yes
even a signal outside of your normal measure range may cause this (think also on harmonics or unwanted mixing
By
Siegfried Jackstien
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#32947
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Re: Interesting phenomenon
I can second that as well !? I inherited some old antennas from a defunct CATV head end and have been trying to take what I thought was the easy way out and sweeping them for resonance with my Nano
By
Wayne Thomas
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#32946
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Re: Interesting phenomenon
Yes Zack. Been there done that. Tried outdoor antenna measurements carting a
hp vector voltmeter and sig gen. Always saw reflected power greater than incident!
Gee an active antenna! Could not get
By
alan victor
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#32945
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Interesting phenomenon
I have been trying to tune some ferrite rod antennas to a specific
frequency. The target frequency is 530 kHz, and for reasons that may be too
complicated to describe here, I want to use a fixed
By
Zack Widup
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#32944
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Re: 2 frequency adapter
The other adaptation solution and the corresponding Eznec file
The intermediate impedance must then be : 81 -j71 ?
Does anyone have a ready-made software to calculate this or then it will be
By
Fran?ois
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#32943
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Re: measuring transformers - Re: [nanovna-users] Zo of twisted pair
Of course. If the technique is not applicable to your situation, look elsewhere.
For other situations, characterizing a system's performance (e.g. DM and CM) using cascaded S-Parameter files can be
By
Jeff Anderson
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#32942
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Re: Combining graphs
#nanovna-saver
You really need to clarify which version of saver you're using, if it is an old version, then it could be out of sync with the improved NanoVNA firmware.
By
Ho-Ro
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#32941
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Re: Simple SWR analysis
#nanosaver
If you look at the "About window, don't you see this line?
"For further details, see: https://github.com/NanoVNA-Saver/nanovna-saver"
Just click on the URL and you'll enter the home page where you
By
Ho-Ro
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#32940
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Re: 2 frequency adapter
Ah, a French :)
Hello
I advanced a little on the subject. To simplify, I will already give the almost satisfactory response. The base of the antenna is :
- Frequency = 3.647 MHz Impedance =
By
Fran?ois
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#32938
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Re: Combining graphs
#nanovna-saver
Which does not makes sense.
The example I mentioned has plenty of data samples when the range is 400 to 500 and it works as expected ,
but with LESS data to process , when the range is much narrower
By
Anne Ranch <anneranch2442@...>
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#32936
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Re: 2 frequency adapter
Hi Fran?ois,
When you do matching HP and LP calculations, you get perfect results at targeted frequencies. That's ok, but don't forget that at 7,1 MHz, you are not in the flat transfer part for HP
By
F6EGK - Jean-Roger
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#32935
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Re: Combining graphs
#nanovna-saver
It really doesn't matter - the baud rate is a fiction for serial over USB.
it's a software fiction that makes a USB link look like a serial interface.
Nope - there's no XON/XOFF or CTS/RTS kind of
By
Jim Lux
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#32934
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