UNIT ABBREVIATIONS
This may be a nit pick to some, but for those of us who learned (correctly) that uppercase = M = Mega = 10^6 and lower case = m = milli = 10^-3, the following: mhz = millihertz or 10E-3 Hertz (1000 Hz
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W0LEV
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#17052
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Re: Bluetooth HC5 and nanoVNA-H
Sorry for the typos...my phone changed the words to make my replies almost gibberish. Even editing changed nothing. Hit 'send', and the words changed and I could not correct them. My apologies.
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ERNEST AEC-RADIO <aecradio1@...>
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#17051
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Re: Bluetooth HC5 and nanoVNA-H
Issues I have with the Bank VNA-H4, has come from the difficulty getting the PC to recognize the VBA as a valid drive. It ignores the VNA and my latest iteration does have the Micro-sd card access, I
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ERNEST AEC-RADIO <aecradio1@...>
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#17050
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Re: Bluetooth HC5 and nanoVNA-H
Bluetooth technology is one of the most poorly documented "stuff" around. A techno geek will tell you it is all based on "bluez" library which is prime example of how such simple and undocumented
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Anne Ranch <anneranch2442@...>
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#17049
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Threshold setup problem
Hello group; Today I was trying to adjust the 300 Mhz threshold point on my h4 device. Instead of seeing the change I tried to input what I get when I enter the threshold command is threshold {in
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John
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#17048
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Re: Big Spike at 297MHz on a New NanoVNA H
NanoVNA use si5351 chip as signal generator On datasheet this chip can work up to 200MHz But can work up to ~300MHz (bigger or less) On frequency near limit generation not stable (an you can see
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DiSlord
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#17046
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Re: Bluetooth HC5 and nanoVNA-H
Normally, these Bluetooth USB extenders just look like a USB hub to the host computer. So you should just plug it in and it should work. The HC5 devices I see on the web look like they're bare
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Jim Lux
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#17045
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Re: Bluetooth HC5 and nanoVNA-H
Many new smartphones support only BLE (Bluetooth Low Energy or Bluetooth 4.0), which wants e.g. an HM-10 module.
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Oristo
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#17044
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Re: Big Spike at 297MHz on a New NanoVNA H
As you have probably read by now, the actual value is 300MHz +/- something. Very h/w specific. / Gerry
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Gerry Kavanagh
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#17043
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Bluetooth HC5 and nanoVNA-H
Taking advantage of an advice from One-of-Eleven, I have purchased a Bluetooth module HC5 that I would like connect to my nanoVNA-H (PCB 3.4) in order to remotely control it. As you probably remember,
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Piero Tognolatti
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#17042
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Re: Big Spike at 297MHz on a New NanoVNA H
Thank you Larry. Earlier, I only searched for 297 and only found a couple of hits in the forum, which had very little info. I'll search for threshold this time and read up on Console Command too.
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manor
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#17041
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Re: Auto-logging/extracting data over time (unattended measurement)
#newbie
It would be quite simple to do in Python, and would be a powerful new feature for room to add to NanoVNA-Saver. Excellent suggestion. Just a strobing routine at regular intervals would do the trick.
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Gary O'Neil
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#17040
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Re: Auto-logging/extracting data over time (unattended measurement)
#newbie
An interesting use for our toys, which could be extended to the Tinysa too. However, (although I am not a programmer of these newfangled devices- (Fortran and Basic 30-40 years ago only), I think that
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Stephen Laurence
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#17039
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Auto-logging/extracting data over time (unattended measurement)
#newbie
Hello all, I am new to NanoVNA (very cool) and have had success calibrating, doing basic measurements, and exporting/plotting data in other software. What I'm looking for is a way to log data
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scathed@...
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#17038
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Re: Big Spike at 297MHz on a New NanoVNA H
Hi Ramon, This is the generator switching to harmonic mode. Search the forum for posts using the term: threshold It's been discussed many times. Read the Console Command document in the files section
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Larry Rothman
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#17037
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Re: Dipole length
When I was taking a graduate level course in electromagnetics quite awhile ago, one of my classmates related to me that her husband said: "it is only three equations, doesn't sound very hard to me!".
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Steve Harbin KT5G
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#17036
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Re: DfuSe Demo: Upload vs Upgrade Confusion
#newbie
#flashing
#programming
A big improvement! Thanks!
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Steve Harbin KT5G
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#17035
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Big Spike at 297MHz on a New NanoVNA H
Hi all, I just got a NanoVNA-H and on wide span I see big spike at around 297 MHz, that really stands out from the others. Does anybody else see this, is this normal? TIA.
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manor
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#17034
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NANOVNA SAA2N & NANOVNA TINYSA
#buying
Hello everyone, I was looking on the R&L website and the NANOVNA SAA2N & NANOVNA TINYSA are now listed but out of stock. I contacted R&L and they told me that these two items are on their way and
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Randy.AB9GO
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#17031
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Re: DfuSe Demo: Upload vs Upgrade Confusion
#newbie
#flashing
#programming
Yeah, I think I'll put a readme in the zip file explaining again, to save the files to the DefSeDemo bin folder.? BTW, they aren't wrappers - I edited the text in the original DfuSe binary as an
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Larry Rothman
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#17029
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