Re: First PCB pictures of the V2
Mel, thanks for the great help with this project (and to Gabriel-san, of course). You should change your username on groups.io to Vignette Tsukinose April. Sorry about the inside joke, at least you
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vbifyz
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#9266
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Re: Part Number for the Demokit Cable
On Tue, Jan 7, 2020 at 01:47 PM, Phil Royce wrote: " looks like 23 more cables to order and fix them permanently on to sma patch panel, I don't want to take on and off these, knowing in the past these
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hwalker
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#9265
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Re: errors of "error" models
Gary, just a guess (I'm not a VNA designer) but it might be because it's easier to design and characterize an "absolute" (open or short) with nominally infinite impedance than something that needs to
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John Ackermann N8UR <jra@...>
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#9264
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Re: Part Number for the Demokit Cable
https://www.ebay.com/itm/5pcs-25cm-1-13-U-FL-IPEX-IPX-Mini-PCI-to-SMA-Female-RF-Coax-Pigtail-cable/223529095134?_trkparms=aid%3D555021%26algo%3DPL.SIMRVI%26ao%3D1%26asc%3D20191105165729%26meid%3D0eea1
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Phil Royce
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#9263
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Re: errors of "error" models
Could it be because these are most easy to manufacture? A short and an open? -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik,
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Erik Kaashoek
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#9262
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Re: Part Number for the Demokit Cable
Found a better price here for bulk. I'm use to lab prices so these are pretty cheap but not going to use constantly just for demo and test theories.
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Phil Royce
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#9261
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Re: Part Number for the Demokit Cable
looks like 23 more cables to order and fix them permanently on to sma patch panel, I don't want to take on and off these, knowing in the past these connectors are not continuous use parts. Thanks for
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Phil Royce
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#9260
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Measuring resonance from coax far end.
Hi folks, This is more a generic VNA question, but thought i'd ask. I've seen a trick to "eliminate" the coax by calibrating via the OSL on the far end of the coax, rather than having OSL connected
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Chris Keladis
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#9259
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Re: Part Number for the Demokit Cable
30 mating cycles ?? That gets you through the Demo Board only twice !! Where can one get extra cables, I think I may need them if I am to use the Demo Board to show off what the NanoVNA can do. 73,
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Dick
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#9258
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Re: errors of "error" models
Hi again Jeff; I believe I now sufficiently understand the technical aspects of the discussions in this thread to forego the wizardry behind the pursuit of high accuracy. it appears sufficiently
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Gary O'Neil
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#9257
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Re: Cancelling out coax feeder length?
As luck would have it, Times Microwave website has a coax calculator that includes the delay! My feeder is 26cm of RG316, which comes out as 1.3nS. Was also pleased to find the nanovna allows delay to
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Martin Barfield G7MRV
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#9256
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Re: Cancelling out coax feeder length?
How long is your feeder and what kind of, I assume, coax? It's really quite easy. Give me those parameters, and I'll show you. Dave - W?LEV wrote: -- *Dave - W?LEV* *Just Let Darwin Work* *Just
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W0LEV
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#9255
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Re: Part Number for the Demokit Cable
ebay.com, eBay item number: 352840116109, $2.29 free shipping Please see my documentation at: /g/nanovna-users/wiki/RF-Demo-Kit-use 73, Rudi DL5FA
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Rudi
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#9254
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Re: Cancelling out coax feeder length?
That makes sense, thanks, however the problem I have is that I cannot do it this way, due to the antenna being fixed and not being able to access the feeder connection, so it will need the maths! So,
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Martin Barfield G7MRV
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#9253
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Re: Nanovna Saver Q issue
On Tue, Jan 7, 2020 at 09:40 AM, vincent coppola wrote: " ..The problem appears to be in determining the correct 3db points. Please note the band stop filter is the only filter that I have tried to
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hwalker
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#9252
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Part Number for the Demokit Cable
Anyone have a part number on the Demokit Cable, I want to have more than just two cables for the kit? Thanks, 73 de ke4pwe
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Phil Royce
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#9251
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Re: What Series/Parallel RLC are used for?
Again, read the tutorials associated with the NANOVNA sites. Series and parallel RLC circuits represent resonant circuits. The R represents the lumped loss in these circuit configurations. They may be
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W0LEV
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#9250
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What Series/Parallel RLC are used for?
Hi, For the NanoVNA Mod 3 software, what is the use of Series and Parallel RLC measurement? I guess in case of S11 measurement it would give me the series and parallel impedance of the passive part
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aa_talaat@...
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#9249
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Nanovna Saver Q issue
Ver 0.2.1. A very nice, usefull piece of software. The only problem I can see is when measuring Q in the band stop filter analysis mode, the value is incorrect and too low. The problem appears to be
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vincent coppola <n1vc@...>
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#9248
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Re: SMITH CHART TUTORIAL
I believe this is the referenced book (attached photo and syllabus for the class below) - pulled from the parent directory of the handout directory. Randy NC8U
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Pomology
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#9247
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