Up-grading the -F model...
All, Where can I find the instructions on upgrading to the latest firmware version for the -F model and what is the latest version? Thanks in advance... Larry, K4MLA
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k4mla
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#12928
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Re: SWR with a NanoVNA
Doug, I will try that tomorrow.... that¡¯s one thing I didn¡¯t check
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KK4JOW
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#12927
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Re: How much calibration is enough?
#calibration
Here is a second report on the effect of calibrating the NanoVNA on SWR and Return Loss measurements. This time a 20M dipole was used as the antenna. It was surprising to me to see how good the
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Roger Need
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#12926
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Re: Bad NanoVNA-F Clones showing up
#nanovna-f
Unless he signed a non compete contract while he was employed by you there is nothing that you can do. OSS project, anyone can sell their own copy/version.
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Dragan Milivojevic
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#12925
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Re: How much calibration is enough?
#calibration
I did some measurements today on a vertical whip antenna tuned for the top end of the 2M amateur band. I wanted to see the effect of calibrating the NanoVNA on SWR and Return Loss measurements? The
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Roger Need
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#12924
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Re: Bad NanoVNA-F Clones showing up
#nanovna-f
I'd say "Welcome to the world of open source. That's how it's supposed to work." The whole point of open source is that if someone thinks they can do better, they should have the chance to try. That
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Clifford Heath
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#12923
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Re: NanoVNA-Saver 0.1.3 MAC
macOS Catalina Version 10.15.4 Rebooted to Recovery Mode Disabled SIP (csrutil disable) Restarted in "regular" mode device shows up as /dev/cu.usbmodem4001 Used NANOVnA to scope out antenna Rebooted
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markgormley@...
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#12922
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
On Sun, Apr 26, 2020 at 01:46 PM, <reuterr@...> wrote: Hello DiSlord, Will you please so kind and provide your firmware version 0.8.4.4 also for the nanoVNA-H (not H4).
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hwalker
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#12921
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
I have several CDE silver mica capacitors I ordered from Mouser, and have several more on back order. I bought leadless surface mount capacitors, but they also have leaded varieties. The ones I bought
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Jim Allyn - N7JA
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#12920
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Hello DiSlord, Will you please so kind and provide your firmware version 0.8.4.4 also for the nanoVNA-H (not H4). 73, Rudi DL5FA
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Rudi
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#12919
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
On Sun, Apr 26, 2020 at 10:44 AM, Dick wrote: There must be something else as I cannot reproduce your results. ...... Trying to measure a 10 mH RF Choke, display bounces around from 190pH to 600pH. ..
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hwalker
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#12918
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
Hi Herb, Good thing those banana adapters are OK for DC, I will opt for that method. I will need to measure some coils for end fed antennas and a coil in a trap, lets see what I can do. At 1MHz I
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CT2FZI
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#12917
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Hi DiSlord, Flashed your latest firmware 0.8.4.4, no problems sofar. Please find attached my results measuring the 50 Ohms standard , 50 Ohms standard paralleled by 50 Ohms and CH1, after calibration.
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Jos Stevens
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#12916
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
There must be something else as I cannot reproduce your results. Now, I am using a NanoVNA-F, but I can't see where that matters. Trying to measure a 10 mH RF Choke, display bounces around from 190pH
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Dick
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#12915
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
Dick 9:58am #12913 What settings did you use to get these measurements ? ===================================== Dick, No special settings. Just turned off the CH1 traces, set the frequency sweep from
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hwalker
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#12914
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
What settings did you use to get these measurements ? Tnx, Dick, W1KSZ ________________________________ Sent: Sunday, April 26, 2020 8:33 AM To: [email protected] <[email protected]>
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Dick
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#12913
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
Luis, Most commercial LCR meters for less than $200 only measure inductance or capacitance below 1 MHz. Manufacturers specify the values of their inductors or capacitors at a specific test frequency,
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hwalker
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#12912
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Re: [Measuring] What is your favourite method of measuring inductance in a coil?
I use XJW01 digital bridge 0.3% for measure R, L, C Measure C: 0,1 pF¨C10000 mF Measure L: 0,01 uH¨C1000 H Measure R: 0,0002 §°§Þ¨C9,999 §®§°§Þ If calibrate on good calibration standarts allow get
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DiSlord
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#12911
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[Measuring] What is your favourite method of measuring inductance in a coil?
Hello team, Trying to understand a good method of measuring the inductance - lets say around 110uH - of a coil. Is the L/C method the best? Is there any direct method of measuring the L? Also, for L/C
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CT2FZI
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#12910
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
You don't need to add a switch, just use the same jumper as I used which is the method the H4 uses and you only need to hold down the jog switch when turning on the Nano.?
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Larry Rothman
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#12909
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