Re: Contact and Book Reference
From the looks of it that's a site about HP and Agilent test equipment. Does it have NanoVNA information also? If not, I would inquire about it in a group dedicated to those brands of test equipment.
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Donald Hellen
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#17183
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Re: S11 Magnitude resulting into negative real part of impedance
Agreed that his values are very close to 1.0 and that re-calibrating may not solve it. The relationship between S11 and the network impedance ZL is: S11 = (ZL-Z0)/(ZL+Z0) where Z0=50ohms resistive,
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Jerry Gaffke
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#17182
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Order of calibrating
Hi, In the Calibration menu of the NanoVna-H4? I have to start with the Open. When I use the Calibration Assistant of the NanoVna Saver 0.3.6-rc2 to calibrate the NanoVna-H4 then I have to start with
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PE0CWK
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#17181
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Re: We started selling SAA2 with N-type RF connector and 4-inch display
Looks nice! Does it use the same serial commands as the v1 I wonder ?
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OneOfEleven
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#17180
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Re: S11 Magnitude resulting into negative real part of impedance
One trick with this kind of measurement (where the reflection coefficient is very close to 1, because the DUT is close to being a short) is to put a resistor in series with the inductor you are
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Jim Lux
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#17179
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Re: Questions
I think you're pretty good. It shows under 2:1 on all bands. 73, Zack W9SZ wrote:
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Zack Widup
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#17178
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Re: We started selling SAA2 with N-type RF connector and 4-inch display
On Sat, Sep 5, 2020 at 04:08 AM, amirb wrote: Hi Hugen can you show the exact hardware inside this new unit? I mean the schematic and a picture of the board? the original SAA-2, which has a 2.8"
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hwalker
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#17177
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Re: S11 Magnitude resulting into negative real part of impedance
Forget most of what I said, looking at the phase again you are probably in a reasonable impedance region to measure in shunt configuration (although hard to say exactly without knowing location of the
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@switchabl
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#17176
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Re: Questions
SWR looks suspiciously good for that wide of a spectrum.
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Solder Soldier
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#17175
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Contact and Book Reference
Dear Friends, Anyone know who Manager this page? http://bee.mif.pg.gda.pl/ciasteczkowypotwor/HP/Publikacje/ or can help to find a Reference? Thanks,
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Antonio Carvalho
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#17174
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Re: S11 Magnitude resulting into negative real part of impedance
What is the expected inductance? How exactly is it connected? The most likely explanation seems to be that your inductor looks more or less like an open-circuit at the frequency you are measuring, so
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@switchabl
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#17173
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Re: We started selling SAA2 with N-type RF connector and 4-inch display
On Sat, Aug 1, 2020 at 01:24 PM, Hugen wrote: > > There is no innovation, just a new shell. > Since this group has been dissatisfied with the SMA connector and the 2.8-inch > display, we installed the
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amirb
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#17172
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Re: S11 Magnitude resulting into negative real part of impedance
Every measurement has some uncertainty. Each measurement should be written as x plus or minus y, where x is the best estimate, and y is the uncertainty. Your values are awfully close to 1.00000; all
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David McQuate
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#17171
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Questions
Working with my H4 Nano. Just put up a random wire antenna. Trying to see what frequencies it is resonant on. If I understand low is good. Can some look at the attached photos and see if I am doing
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Darrell Carothers
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#17170
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Re: S11 Magnitude resulting into negative real part of impedance
I know nothing much about nanovna-saver, but I am curious what kind of network is under test here. If it is a passive network, then the magnitude of s11 should be a maximum of 1.0 It could be that
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Jerry Gaffke
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#17169
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S11 Magnitude resulting into negative real part of impedance
Hi, The below is part of my S11 file from NanoSaver. I noticed that whenever the second column (magnitude of S11) is 1 or more, the NanoVNA saver does not display the real part of the impedance. Using
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aa_talaat@...
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#17168
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Re: SAA2N reviews
Thanks Herb. I've bought from R and L before and was pleased with their service. The SAA2N is listed on their web page but currently out of stock. I will wait until it is available. I gave my first
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Dex W4DEX
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#17167
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Re: Adjustable Port1 Output Level
#features
If you just want to measure gain, it is totally fine to calibrate and measure with the attenuator at the port. The reflection measurement will probably be very noisy with 20dB attenuation and may not
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@switchabl
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#17166
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Re: Adjustable Port1 Output Level
#features
Thanks. My NanoVNA is the S-A-A-2 version and there are no menu items that I've run across that deal with the output power level. It's not listed on the SAA2 Menu Map either. I guess not all V2 units
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Bob M.
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#17165
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Re: Recent NanoVNA-H4 arrival
§¯ 7'?:)
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aleks07111971@...
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#17164
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