¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
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.
By Gyula Molnar · #12014 ·
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.
By Paul M3VUV · #12013 ·
Re: did I fry my H4?
after removing it, install the driver, don't wait for your computer to look for a driver.
By Gyula Molnar · #12012 ·
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
By Gyula Molnar · #12011 ·
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
By Erik Kaashoek · #12010 ·
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
By i2NDT Claudio · #12009 ·
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
By vaclav_sal <vaclav_sal@...> · #12008 ·
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
By WB2UAQ · #12007 ·
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
By Hugen · #12006 ·
Re: did I fry my H4?
Is the USB cable faulty? Try replacing the USB typeC cable.
By Hugen · #12005 ·
Re: Analysing Input Impedance Matching Circuit for the NE602
Kerr, I was curious to see what would happen if the turns count was reduced to 7 from 8. The results were better with an improvement in S11 and S21. I have attached some plots showing the difference.
By Roger Need · #12004 ·
Moderated Re: Another off-topic about Smith chart
OP: For technical topics, Wikipedia is actually pretty good. Case in point, I think this link directly answers your question.
By Mark Randol · #12003 ·
Re: NanoVNA-V2 from Tindie - First impressions
Hello and thanks for your update. Could you please share some more photos and details of the V2? Waiting for it also. And nanovna-saver will be updated to make it compatible with the V2, once the
By CT2FZI · #12002 ·
did I fry my H4?
I received the H4 a few days ago. I played with it in a "stand alone" configuration (not connected to the PC) and it worked very well. than I connected it to my PC to charge the battery and did not
By i2NDT Claudio · #12001 ·
Re: NanoVNA-V2 from Tindie - First impressions
hallo Liber Wolfgang, wie gehts dir..... 60€ mit versand? alles ? danke! Em qui., 26 de mar. de 2020 ¨¤s 21:24, Wolfgang Kiefer <woki@...> escreveu:
By Antonio Carvalho · #12000 ·
Re: NanoVNA-V2 from Tindie - First impressions
Today the parcel has arrived. Connected to a PC (Micro USB plug), it runs without problems. A 50 Ohm load connected, tested the frequency limit: very impressed - 4.5 GHz are displayable. Good results
By Wolfgang Kiefer · #11999 ·
S-parameters versus Time.
Hello Users, Is there a possibility to performance measurement S-parameters versus Time, to a fix frequency? Are there anyone Who has been working or know how to measurement Recovery Time using
By Antonio Carvalho · #11998 ·
Re: Unable to install DfuSe_Demo #firmware
Hello, and thanks for the suggestion. I was able to successfully complete the install after rebooting my computer. Apparently there was a Windows update that had installed, and it required a reboot to
By James Bolm · #11997 ·
Re: H4 F303 artwork updates(4.2 -> 4.2.1) #nanovna-h4 #circuit #improvement
Hola Ignacio, Es solo un mensaje de "firma" agregado autom¨¢ticamente despu¨¦s de cualquier texto (arriba) que no tiene nada que ver con el tema en discusi¨®n ... Por favor ignora jaja @Eric@ he was
By CT2FZI · #11996 ·
Re: Unable to install DfuSe_Demo #firmware
Have you tried disabling AntiVirus/Protection utilities prior to running the updater? Would suggest disconnecting network prior to disablement. Cheers
By lgo51 · #11995 ·