Re: #software QtTinySA v0.11.7 release
#software
I have fixed the file browse/save bug and also the one where preferences didn't save unless a tinySA was connected.? For the avoidance of doubt, only .bmp files are displayed as images in the browsing window.? Other files can be saved by clicking on them and pressing the 'save' button.
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v0.11.8 with an executable file that works with Ubuntu 24.04 & 22.04 and Debian v12, and a Windows executable are in the release.? The python sources and the config database are in the .
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Re: Jason's question about releasing a Flatpack version, I expect it's possible but I am not going to try making one, nor for Docker or Snap, or similar.? But I am happy to consider other feature requests but please put them in the on Github.
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Ian
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which version of Windows?
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It says No Device No Voltage so I'm guessing it is not connected? Although the Windows App do recognizes it via COM5 port. When I click on File/Browse TinySA, it shows this window:
If I close it, nothing happens. If I click the text or the save button, the app freezes. Do I have to change something on the SA?
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Does QtTinySA show the device as being connected at the bottom left?? If not, you should get a message popping up to say it's not connected.? If it is, you should get this screen.? Only .bmp files are displayed, but all can be saved.
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Yeah, I believe of you multiply each value by .8686 it should be very close.?
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Oh no, so its a bug from the app itself? Would it be fine if I just level all the data up adding the 10dB on the csv file?
I tried the QtTinySA.py but I couldn't connect the SA. I click on browse but it shows me a box and then stops working.
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
There is some overlap in the default tables to have multiple frequencies to check for level continuety during validation.
In normal operation these ranges are not used
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Designer of the tinySA
For more info go to
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
ok, thanks for the hint.
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One more question arises to me: as I understand, harmonic mode is used above 5GHz, so I wounder if I find? setpoints between 4 and 5 GHz?
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Johann
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This is a known bug and last I heard wasn't a priority to fix. I recommend checking out QtTinySA which is an open source python app which appears to export correctly. Cool thing is it's cross platform and works on Mac.?
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https://github.com/g4ixt/QtTinySA
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I'm sorry, here are the full screenshots this time.
I just opened the CSV file and found out that the correct values are in WWB, which means the if the tinySA-App shows a frequency peaking at -58.8dBm, the exported csv says it is peaking at -67.9dBm. Why is it? giving me everything off by almost 10 dB? Do I have a faulty unit?
Just to clarify, I made a scan with the app, saved the csv file and then imported it to WWB.?
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
Johann,
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In addition to 30 MHz, I would select the frequencies that I normally expect to measure, or failing that, since I believe that Erik's algorithm calculates the level compensation of the undefined frequencies proportionally between the frequencies defined before and after it in the table, I would choose frequencies with a tipping point in the difference of the level measurement without correction, ? or choose the frequencies before and after ones which a variation or jump is observed in the uncorrected measurements.
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I can't check it because I don't have such a high frequency generator.
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Toni
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Re: 5.8GHz wideband video signal measurements
Hi Hai,
It is not my video: I found it by searching youtube.
Just by visual from video, I think that I saw it could be bought online /ebay/amazon etc.
By searching/reading recent posts/ "cca. last 30 days" from this group, you could find pictures/ links/where to buy maybe even "stronger" directional antennas which could have longer range but keep in mind if you will use such "stronger/more 'dbi's? " antennas that you should protect TinySA with attenuators because such antennas will send more 'dBm's/power to TinySA input.
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Regards,
Toni
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
Except the 30 MHz point you can choose all frequencies as you like.?
--
Designer of the tinySA
For more info go to
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
Ok, works nice.
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Is there any specific reason for the certain selection of the frequencies for the curve points? - I do not see a mathematical system in the steps.
Can I select them free w/o violating system expections? (except the first point at 30Mc)
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Please recommend.
Thanks,
Johann
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It depends on which instrument you trust, and the type of modulation in use.
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It's difficult to tell from your screen grabs, but WWB seems to have a much higher noise floor, in relation to the peak signal level.
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What is causing this difference ?
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Is it the type of detector (peak, average etc.), or differences in bandwidth that are being used by each instrument ?
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Try experimenting with different settings of TinySA bandwidth, sweep rate and LNA / attenuator values.
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Regards,
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Martin
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On Sun, Sep 29, 2024 at 06:03 AM, <musicfordrumies@...> wrote:
A few days ago, I found out there is a difference of aproximately 10 dB when showing the same scan on the TinySA app and the mics coordinating app (WWB)
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Hi everyone. I got a TinySA and I've been learning how to use the scans from the Windows App for coordinating wireless mics frequencies. A few days ago, I found out there is a difference of aproximately 10 dB when showing the same scan on the TinySA app and the mics coordinating app (WWB). Also, I've compared my tinySA scans with some others I made with a Shure Rx (QLXD4 model) and when importing onto WWB the TinySA ones are 10 dB lower. Is there something I am missing? Should I enter the dB difference as level gain so the noise floor matches between scans? What would you recommend in this situation?
My TinySA is calibrated as suggested in the web page (low input calibration with both sma connected with one cable) and the high port has been matched with a known frequency in the overlaping region between the High and the calibrated Low port, so it should perform well. Is there some scanning I am missing?  
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Re: TinySA ULTRA: measurement results for telecom mobile networks with 5G standard (for FREQ ranges 3480 MHz - 3800 MHZ)?
#specifications
#ultra
Toni,
Most dominant problem is seeing a mirror/ghost? at an offset of roughly 2 GHz from the actual signal.
So whenever you see broadband signal 2 GHz away from another broadband signal you may expect one to be a mirror/ghost.
--
Designer of the tinySA
For more info go to
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Re: TinySA ULTRA: measurement results for telecom mobile networks with 5G standard (for FREQ ranges 3480 MHz - 3800 MHZ)?
#specifications
#ultra
@ToniZG
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Hi,
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could you please specify what software you used to generate those graphs ?
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
You have to enter upfront the actual output level of the generator. Then you select each point, set the generator to the correct frequency and check if the signal is visible and the marker is correctly place on the peak. Then you clock OK to use the measure peak level to correct. When you select the same frequency again the peak should be on the actual output level from the generator
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harm_lna is the table used when in harmonic mode with LNA enabled.
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--
Designer of the tinySA
For more info go to
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Re: how to save the calibration data for 6G-12G for SA and SG in the high freq for Ultra
ok, thanks - i found it.
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How does it work? when I select this menu point, I am asked for the actual level - I assume I have to apply a single signal with known level, the tinySA software uses the found peak for examining the frequency to correct and the known level has to be entered, this for each frequency? I want to correct. I am right?
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Additional question: under which circumstandes I have to modify also the harm_lna table?
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Thanks,
Johann
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