On Sat, May 10, 2025 at 10:18 AM, Erik Kaashoek wrote:
The tinySA never will be able to realtime record the real input signal.
It is not an SDR
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Designer of the tinySA
For more info go to
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The tinySA never will be able to realtime record the real input signal.
It is not an SDR
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Designer of the tinySA
For more info go to
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Michael,
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Strange behavior.
Normally, the switch on the left is on the OFF position and the switch on the right is on the ON position. Regardless of whether the USB is plugged into a computer or 5V DC source or not plugged.
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Thanks you for you're reply,
you confirm me the Tiny SA Ultra+ can't record the integrality of the realtime signal on his sdcard, and need external recorder ?
What sort of model of rasberry pi is correct to record in term of power (cpu, IO...)
if have two or three tiny sa in // the Pi can record them simultanously with your're software ?
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This is new to me
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Designer of the tinySA
For more info go to
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Thanks for the quick reply and I'm glad it's an original. As I plan to buy some more I had to be sure that they are not copies.
With the firmware it was stupidity on my part because I thought the programming time was displayed, but it is the build time and this does not change if the current firmware is already installed. Installing an earlier version works fine and then the build time also changes.
Another thing that drives me crazy is the power switch. When I have connected the TinySA via USB, I cannot switch on the device.
When I unplug the USB and move the switch from the right to the left position and then immediately back to the right position, the device switches on. Is this normal switch-on behaviour? Incidentally, I can also switch the device on in this way if I have connected the USB cable to a power supply unit rather than to the PC.
However, I always have to switch the switch back and forth quickly.
I've tried it umpteen times and always get the same result.
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Eleshop for sure does NOT sell clones.
Did the FW version number change?
If not, you may have loaded the FW in the wrong direction (into your PC) or you have a problem with a USB 3 port
Download the FW again and try again to update
If the updating takes a very long time you are probably connected to a USB 3 port. Find a cheap USB 2 hub to put in between the tinySA and the PC or a computer with USB 2 ports as USB 3 on some computers is not compatible with the FW update protocol.
If the battery level is yellow or red, selftests may fail although some measurements are still possible.
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Designer of the tinySA
For more info go to
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Hello,
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I bought a TinySA from the secure seller Eleshop B.V. Nevertheless, I am not so sure that it is an original. The following points:
Switching on only works by toggling the power switch and when USB is connected it usually does not work.
Even after updating the firmware, the firmware release date shows an old date, even if the firmware is actually up to date.
Yesterday I had problems with the self tests. It could also have been due to the battery level which I unfortunately did not check and this morning after it has charged overnight the self test works again.
Yesterday self test 1 did not work at first, later 1+2 and then later 1-4 did not work.
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Re: Signal generator level
I have a whole set of those SMA 2 watt attenuators I use for a lot of things. They are in 1 dB increments between 1 and 10 dB, and 5 dB increments from there to 30 dB. I also have a Kay switchable attenuator that can be switched in 1 dB increments up to 110 dB. It is rated to 1000 MHz and appears to be accurate across that range.
Measuring MDS is very useful with the transverters I have that use 144 and 432 MHz IF's. I can use the TinySA Ultra to generate signals up to 10 GHz. I use an HP 475B power meter to accurately measure the levels of the signal.
Zack W9SZ Even my HP 8648C set to -136 dBm (the minimum internally available output) plus additional external attenuation leaks just a wee tiny bit!? Still good for receiver MDS evaluations.? I've never looked at the leakage from the HP 8640.? Maybe someday.....
Dave - W?LEV
On Wed, May 7, 2025 at 2:43?PM James Harvey via <wyominggeezer= [email protected]> wrote: My approach would be to use one of those small SMA connector attenuators. They're fairly inexpensive and you can get them in levels from 3DB to 30 dB. That's what I use.?
I even use it for low-level QRP work. The ones I use will handle two watts.
Watch 'Yer Top Knot and Keep Your Powder Dry, ? James R. Harvey - The Wyoming Geezer -?Armed and Dangerous PM ¡à Progress Lodge #22 ¡à Order of the Eastern Star
Minimum output level used to be -120 dBm but not all HW was able to reach this level so the limit was set to -115 dBm
The limiting factor is leakage which can not be improved within current cost and space limitations
Adding a cheap external attenuator and setting the external gain to negative the attenuation solves the problem
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Designer of the tinySA
For more info go to
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Re: Signal generator level
Yep my HP 8660 leaks a small amount but as long as proper cables are used it still seems to be accurate into a 50 ohm load. Within about 1dB.?
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Re: Signal generator level
Even my HP 8648C set to -136 dBm (the minimum internally available output) plus additional external attenuation leaks just a wee tiny bit!? Still good for receiver MDS evaluations.? I've never looked at the leakage from the HP 8640.? Maybe someday.....
Dave - W?LEV
On Wed, May 7, 2025 at 2:43?PM James Harvey via <wyominggeezer= [email protected]> wrote: My approach would be to use one of those small SMA connector attenuators. They're fairly inexpensive and you can get them in levels from 3DB to 30 dB. That's what I use.?
I even use it for low-level QRP work. The ones I use will handle two watts.
Watch 'Yer Top Knot and Keep Your Powder Dry, ? James R. Harvey - The Wyoming Geezer -?Armed and Dangerous PM ¡à Progress Lodge #22 ¡à Order of the Eastern Star
Minimum output level used to be -120 dBm but not all HW was able to reach this level so the limit was set to -115 dBm
The limiting factor is leakage which can not be improved within current cost and space limitations
Adding a cheap external attenuator and setting the external gain to negative the attenuation solves the problem
--
Designer of the tinySA
For more info go to
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Re: Signal generator level
My approach would be to use one of those small SMA connector attenuators. They're fairly inexpensive and you can get them in levels from 3DB to 30 dB. That's what I use.?
I even use it for low-level QRP work. The ones I use will handle two watts.
Watch 'Yer Top Knot and Keep Your Powder Dry, ? James R. Harvey - The Wyoming Geezer -?Armed and Dangerous PM ¡à Progress Lodge #22 ¡à Order of the Eastern Star
Minimum output level used to be -120 dBm but not all HW was able to reach this level so the limit was set to -115 dBm
The limiting factor is leakage which can not be improved within current cost and space limitations
Adding a cheap external attenuator and setting the external gain to negative the attenuation solves the problem
--
Designer of the tinySA
For more info go to
|
Re: Signal generator level
Minimum output level used to be -120 dBm but not all HW was able to reach this level so the limit was set to -115 dBm
The limiting factor is leakage which can not be improved within current cost and space limitations
Adding a cheap external attenuator and setting the external gain to negative the attenuation solves the problem
--
Designer of the tinySA
For more info go to
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Is there any future plan to drop the minimum signal level output available below -115 dbm? This would be more useful for receiver sensitivity testing since most radios levels are around -117 dbm to -118 dbm.
Karl Steudl
2 Pilgrims Ministries/Acts412 Maintenance &?Communications
Batt.Chief/Fire Marshal ret.
Ham radio call N8XBD/GMRS call WPXT770
Sent from Proton Mail Android
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Re: Banggood, is tinysa.org updated?
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Re: Banggood, is tinysa.org updated?
passed selft test, updated to newest fw  
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Banggood, is tinysa.org updated?
According to tinysa.org banggood removed tinysa trademark and now is selling only clones. But now, there is only one option for tinysa different models to buy and all of them has tinysa trademark and even says made by zeenko and erik. I have asked seller a he replied that he sells only genuine, not clone.
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Locked
Re: Spur signals above 2.75 GHz?
Topic closed
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Designer of the tinySA
For more info go to
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Locked
Re: Spur signals above 2.75 GHz?
I have and use an 8556 in the 852 mainframe.? Didn't know it is BWO based.? The lowest range which tops out at 3 GHz is pretty clean.? The other ranges are the problem.? And, yes, the "ID" button for use above 3 GHz which shifts legitimate signals exactly 1 MHz.? Others move much more than that.? I have other SAs, but not one that stops at 21 GHz.? Don't have the 8566, but the 8568 SA and a few others.?
Dave - W?LEV
On Tue, May 6, 2025 at 12:55?AM Donald S Brant Jr via <dsbrantjr= [email protected]> wrote: I had an old HP 856/8556 BWO-based spectrum analyzer at my first job, in 1975.? It, like all of the old non-preselected analyzers, had plentiful images and mixing products.??
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It had a Signal Identifier button which shifted the LO a certain amount; only real signals would move down and 2 scale graduations to the (?)right, others would move left or different amounts.? Built character using it to design oscillators.
73, Don N2VGU
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Locked
Re: Spur signals above 2.75 GHz?
I had an old HP 856/8556 BWO-based spectrum analyzer at my first job, in 1975.? It, like all of the old non-preselected analyzers, had plentiful images and mixing products.??
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It had a Signal Identifier button which shifted the LO a certain amount; only real signals would move down and 2 scale graduations to the (?)right, others would move left or different amounts.? Built character using it to design oscillators.
73, Don N2VGU
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W5CDT
Donald S Brant Jr