Re: Attenuators, distance and overload
#tinysa
Got it. Thanks to you both.?
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Re: TinySA Ultra - Hardware version "unknown"
Haven't really followed all of this thread, but my tinySA Ultra with
Version: tinySA_v1.3-512-gd99d679 shows HW Version:0.4.5.1
73
Stan
KM4HQE
On 12/10/22 08:45, Erik Kaashoek wrote:
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I've updated the latest release just a few minutes ago. Can you
update and report the value between ()?
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For more info on the tinySA go to
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Re: New FW release: Add SAVE STATE and LOAD DEFAULTS to PRESET menu
-last version 1.3512, it is very useful to be able to select SAVE STATE, thanks Erik, but to works accurate when selected, all the settings of the last state should be saved, like when saving a preset. If the difficulty is the memory needed, these last state settings could be saved in the startup memory locations.
Toni
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Re: Invitation: How high will your tinySA Ultra go?
Hi Herb, MirekD and others It is correct I have the facilities to create correction tables beyond 6GHz actually to 18GHz. I am presently working on all the correction tables now the TinySA ULTRA is produced on pick and place machines and not hand soldered as the prototypes was, which has improved some characteristics.
I think it just is a matter of the ULTRA receive correction table and it takes just a split second to swap the original correction table specific for ULTRA (after a prior backup) with a new Ultra trial correction table. It is simply done in the terminal command screen of a terminal emulator program like KiTTY and first read the embedded Ultra correction table (and copy paste it to a text editor as a backup) and then copy paste the new experimental Ultra correction table delivered as a *-txt file Kind regards Kurt ? ? Fra: tinysa@groups.io <tinysa@groups.io> P? vegne af hwalker
Sendt: 10. december 2022 22:56
Til: tinysa@groups.io
Emne: Re: [tinysa] Invitation: How high will your tinySA Ultra go? ? On Sat, Dec 10, 2022 at 01:14 PM, Erik Kaashoek wrote: You can change the frequencies in the correction table any way you like, up to any frequency?
? ?The tinySA Ultra is a great platform for experimentation as Erik allows the user access to the correction tables to improve its measurement level and frequency if the user has the prerequisite equipment and technical skill to do so.
? ?Erik is pretty much limited to 6GHz in his home lab, but Kurt Poulsen has a microwave set-up that is to die for and lent his time and expertise in developing the correction tables that are used in the production tinySA Ultra.
? My guess is that ham operators and electronic enthusiasts will see the potential in the tinySA Ultra and articles will start appearing that extend the capability of the tinySA Ultra to 12GHz and above.? The software is an area where a guru could definitely fill a void and build a multi-platform application, such as nanoVNA-Saver, for the tinySA Ultra. Erik has done a fine job modifying Cathy's nanoVNA-App program for the tinySA, but his real expertise is hardware and firmware.? That is the main reason tinySA-App is not as robust as the hardware.
Herb
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Re: Invitation: How high will your tinySA Ultra go?
OK, I understand, thanks for the information. I'm sure the TinySA Ultra is an excellent device for HF, UHF and SHF enthusiasts. Certainly something to look forward to!
Mirek
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Re: Invitation: How high will your tinySA Ultra go?
On Sat, Dec 10, 2022 at 01:14 PM, Erik Kaashoek wrote:
You can change the frequencies in the correction table any way you like, up to any frequency?
? ?The tinySA Ultra is a great platform for experimentation as Erik allows the user access to the correction tables to improve its measurement level and frequency if the user has the prerequisite equipment and technical skill to do so. ? ?Erik is pretty much limited to 6GHz in his home lab, but Kurt Poulsen has a microwave set-up that is to die for and lent his time and expertise in developing the correction tables that are used in the production tinySA Ultra. ? My guess is that ham operators and electronic enthusiasts will see the potential in the tinySA Ultra and articles will start appearing that extend the capability of the tinySA Ultra to 12GHz and above.? The software is an area where a guru could definitely fill a void and build a multi-platform application, such as nanoVNA-Saver, for the tinySA Ultra. Erik has done a fine job modifying Cathy's nanoVNA-App program for the tinySA, but his real expertise is hardware and firmware.? That is the main reason tinySA-App is not as robust as the hardware. Herb
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I use a USB-A 3.2 Gen1 port. I used the same USB port tonight for upgrading the iinySA Ultra, in the order of 30 seconds, then it was really much faster than updating the tinySA?
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Re: Invitation: How high will your tinySA Ultra go?
I would argue for the possibility to calibrate the level directly in the calibration procedure (CONFIG...LEVEL CAL...) with the connection of an RF signal of known level. The correction table would then serve to respect the connected equipment, (cable, amplifier etc).
Mirek
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Re: Invitation: How high will your tinySA Ultra go?
Gracias Herb
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EA1AWY? Javier Muriedas? (Gijón, Asturias, Spain)
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Re: Invitation: How high will your tinySA Ultra go?
You can change the frequencies in the correction table any way you like, up to any frequency? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Invitation: How high will your tinySA Ultra go?
I would appreciate the ability to calibrate the level to at least 12 GHz, this would take the possibility of using TinySA up a level. At least some users would use it.
Mirek
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Re: Invitation: How high will your tinySA Ultra go?
I agree that caution is needed, but for those who know what they are doing, TinySa Ultra is a good tool for checking frequency multipliers etc. You need to have a broadband power meter in addition to the tinySA. But that is part of the basic equipment of an amateur microwave lab. The same way to work with professional harmonic mixers.
Mirek
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And you may use the 5th harmonic at 150 MHz --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Invitation: How high will your tinySA Ultra go?
Inside the locked internals menu is an option to enable the Ultra to go up to above 20 GHz As I never thought this would be useful I kept it inside the internals menu. You probably need a lot of input power to reach that high as there are massive conversion losses and all components are way, way out of spec.And you have to be carefully as any input above 6 dBm may harm the tinySA Is there any real use for the above 12 GHz range? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Invitation: How high will your tinySA Ultra go?
On Sat, Dec 10, 2022 at 10:01 AM, <franciscm@...> wrote:
The stop frequency on mine fails at just over 12GHz. How does it get to 20GHz? Does it have to be connected to the PC?
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EA1AWY? Javier Muriedas? (Gijón, Asturias, Spain)
Javier, ? The released firmware for the tinySA Ultra has a high limit of 12GHz. Mirek was using a pre-lease firmware that beta testers used to help Erik determine the practical measurement range of the tinySA Ultra.? ?I was wondering when someone was going to question how Mirek performed his measurements above 12GHz. Herb
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Re: Invitation: How high will your tinySA Ultra go?
The stop frequency on mine fails at just over 12GHz. How does it get to 20GHz? Does it have to be connected to the PC?
-- EA1AWY? Javier Muriedas? (Gijón, Asturias, Spain)
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Re: TinySA Ultra and TinySA App
? From time to time, in the TinySA-App comms window, maybe every 4 or 5 minutes, there seems to be slight blip in the way that the window is updated, normally new lines appear at the bottom, but occasionally most of the window is cleared, new lines appear after the few lines left at the top of the screen, and then once the new lines fill the screen it begins scrolling up again, new lines inserted at the bottom of the window ? Just mentioning it as I am not sure if it is a sign of there being some form of a processing speed related issue, maybe related to vbat ? However, once the problem occurs it seems that the TinySA is the party that has suffered, it has to be restarted, ?the TinySA-App doesn’t need a reboot, it is ready to carry on as soon as the TinySA is reconnected. ? Mike G8EII ?
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Re: TinySA Ultra and TinySA App
On Sat, Dec 10, 2022 at 09:05 AM, hwalker wrote:
The "tiny Spectrum Analyzer" application might be a workable solution
Erik & Herb, That's the proof - the tinySA.exe does not query the battery status, does not use the 'vbat' command! rgds Wolfgang
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Hi, Erik,
The proposed feature might be actual for the #ultra, a kind of composite spectrum, with 2...3 discrete frequency spans (bands) displayed simultaneously on the screen.
Kind regards,
Alex
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Re: TinySA Ultra and TinySA App
Erik, ? ?I don't know if it helps, but I do not get a serial disconnect when continuously running (>1hr + switching focus) the "tiny Spectrum Analyzer" application with my tinySA Ultra. ? This seems to indicate that the problem is related to a buffer overrun problem in tinySA-App as you first suggested. Since tinySA-App was modified from an application originally written by another programmer, tracing the serial comms logic may take a bit of detective work from you. ? The "tiny Spectrum Analyzer" application might be a workable solution for users who want to use their pc to perform a continuous scan using tinySA Ultra until the issue with tinySA-App is solved.? The "tiny Spectrum Analyzer" application was written by you before the tinySA Ultra was a gleam in your eye and doesn't accept center frequency entries above 1GHz.  Herb
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Peter Klein - KD7MW
Kurt Poulsen