Re: First PCB pictures of the V2
Hi, Could you please share the STL? Cheers *73 de Lu¨ªs, CT2FZI* *QRV @ 145.300 MHz | **CQ0VMST (VHF REP Monsanto)* <http://goog_717545661> http://www.ct2fzi.net <http://goog_717545661>
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CT2FZI
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#12025
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Re: First PCB pictures of the V2
Made a housing for the new NanoVNA V2. https://www.ebay.de/itm/174232796658
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@blackmagic
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#12024
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Re: did I fry my H4?
If you're good at soldering surfacemount (and have a microscope or by magnifying glass, try re-flowing the PCB solder pins on the nanovna's USB-C connector.If either of the data lines is not
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Larry Rothman
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#12023
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Re: did I fry my H4?
On Fri, Mar 27, 2020 at 10:05 AM, i2NDT Claudio wrote: ...I also checked the H4 on another PC just rebuilt ex-novo with windows 10 PRO. same result: "Unknown device"!
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hwalker
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#12022
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Re: did I fry my H4?
well...I duly disinstalled the drivers several times...and actually USBDeview didn't find any driver related to STMsomething. yesterday I spent the whole afternoon with uncle Google trying to find
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i2NDT Claudio
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#12021
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Re: did I fry my H4?
Let's be nice people. Most people assume the device they are working with is at fault, not the underlying platform (Windows in this case). Even a good search won't return the results you need if your
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Ed Humphries
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#12020
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Moderated
Re: Another off-topic about Smith chart
Actually, I should have said, the real axis coordinates are scaled as the real part of (1+¦£)/(1-¦£), i.e., the normalized impedance Z_L / Z_o . -- Aldo -- --------------------------------------
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Aldo Cugnini
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#12019
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Moderated
Re: Another off-topic about Smith chart
Hi all, A bit late in posting this, but to all those who are just starting out, and having a learning curve approaching the Smith Chart, I have put together an introductory article.? You can find it
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Aldo Cugnini
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#12018
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Moderated
Re: Another off-topic about Smith chart
Exactly.? The real axis coordinates are scaled as (1+¦£)/(1-¦£), i.e., the real part of the normalized impedance Z_L / Z_o . -- Aldo --
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Aldo Cugnini
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#12017
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Re: SMITH CHART TUTORIAL
GREAT Article, Aldo - Thanks!
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Larry Rothman
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#12016
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Re: SMITH CHART TUTORIAL
Hi all, A bit late in responding, but to all those who are just starting out, and having a learning curve approaching the Smith Chart, I have put together an introductory article.? You can find it
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Aldo Cugnini
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#12015
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Re: did I fry my H4?
this can also be a solution. The problem is not with nanovna, but with the pc operating system. If you know google you shouldn't have asked the question here.
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Gyula Molnar
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#12014
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Re: did I fry my H4?
i had this issue after a windows update,had to use system restore then it was ok,that was using win 7 64 bit.
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Paul M3VUV
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#12013
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Re: did I fry my H4?
after removing it, install the driver, don't wait for your computer to look for a driver.
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Gyula Molnar
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#12012
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Re: did I fry my H4?
Hi Claudio, I think you should read and apply this: /g/nanovna-users/message/7284 You may also need to reboot your PC and nanovna. (Turn off then turn on.) Hope this helps. 73, Gyula
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Gyula Molnar
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#12011
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Re: H4 F303 artwork updates(4.2 -> 4.2.1)
#nanovna-h4
#circuit
#improvement
Hugen Can I suggest you use the same values of R25 and R24 in the attenuator circuit for the CH1 input as those used in for the reference SA612? And then set R22 to come to 50 ohm? This will reduce
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Erik Kaashoek
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#12010
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Re: did I fry my H4?
thanks Hugen! but unfortunately I haven't a spare cable and can't go out to buy one: thanks COVID-19! hahaha I checked the socket and it's OK: I didn't need to enlarge the hole of the case. Claudio
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i2NDT Claudio
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#12009
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Moderated
Re: Another off-topic about Smith chart
In the immortal words of Arte Johnson...verry interesting... In over 20 + replies only handful actually answered or came close to answer my question. As of now , here are MY observations. The Smith
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vaclav_sal <vaclav_sal@...>
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#12008
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Moderated
Re: Another off-topic about Smith chart
The Smith Chart is a plot of the reflection coefficient where it's magnitude covers 0 to 1 having a phase angle from 0 to 360 degrees (0 to 2pi radians) (vector....mag and phase angle). The
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WB2UAQ
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#12007
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Re: H4 F303 artwork updates(4.2 -> 4.2.1)
#nanovna-h4
#circuit
#improvement
Another solution comes from the suggestion of Massimo. Changing the input of SA612A to single-ended can eliminate the influence of the capacitance of one of the input pins. Maybe this modification is
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Hugen
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#12006
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