Re: Your NanoVNA version
Thanks for your reply, Jim. You said it and I was typing it. I'll do as you described but I don't have a junk box to scavange. The wife made me get rid of that stuff years ago on one or another
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RJOLLIS
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#32961
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Re: Your NanoVNA version
It does indeed look respectable. But then who knows what's under the shields ;). On your encouragement I'll work to find some DUTs to measure. Having been out of the field for a long time, I don't
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RJOLLIS
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#32960
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Re: Your NanoVNA version
Nothing beats having a small box with some discrete R, C, and some filters/pads. If nothing else, it's handy to demonstrate with. Over the years I've accumulated things typically with a SMA jack and
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Jim Lux
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#32959
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Re: Your NanoVNA version
Looks like a decent clone, I have seen worse. Upgrade the firmware (use Dislord's latest) and you should be fine. If in doubt, measure some representative DUTs. [email protected]> wrote:
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Dragan Milivojevic
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#32958
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Re: Your NanoVNA version
I'm new to this user group. This wiki topic seems to have aged. The last entry is 11/18/2020. So I am going to post my question hoping to get an answer or a referral to another message to help. I
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RJOLLIS
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#32957
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Re: Simple SWR analysis
#nanosaver
Well, you never know. A long-time friend of mine since college and fellow radio amateur says he is the only "other" James A. Michener in the USA. Zack W9SZ wrote:
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Zack Widup
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#32956
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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
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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 a
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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.
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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.
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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 at
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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 the
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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
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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
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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 products)
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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
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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
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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
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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
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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
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Jeff Anderson
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#32942
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