Re: Settings for measure Lora signals
Seems to work pretty good like you said?
Thank you so much!
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Re: Settings for measure Lora signals
To do pure power measurement at a known transmit frequency (or small range of frequencies) it may be better to switch to zero span mode and set the RBW to 850 kHz.
This will convert the tinySA into a narrow band scope.
This because with short transmission bursts a scan may partially miss the transmission.
In zero span mode you can monitor rather short bursts
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Designer of the tinySA
For more info go to
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Settings for measure Lora signals
Hello there,?
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I am having some strange behaviors between rx and tx in my personal project and have thought of using tinysa to better monitor what is going on.
The use will be for short/medium range so there is no need to measure signals below -90db at most.
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My settings are BW500khz, SF5 and 868.0 Mhz, I have set tinySA center frequency 868, span 500Khz and I see perfectly the signals but, depending on the RWB I use, I get a RSSI or another, I would like to know what would be the appropriate settings or any advice to compare the RSSI between tinySA and LoRA modules.
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Thanks!
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Re: What accessories do I need for a TinySA Ultra?
On Thu, Mar 13, 2025 at 02:47 PM, Erik Kaashoek wrote:
Absolutely no need to buy a second calibration kit. The kit supplied with the nanoVNA is good
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For meticulous as I am, About the 3rd time I calibrated my NanoVNA 2-3 years ago.. Calibration was funky and the supplied 50 ohm load was, I recall OPEN... Fortunately AMAZON? solved that with a pair of 50 ohm SMA loads for very little money..
I chalked it up to ADOA...Almost Dead on Arrivial.?
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Thank you for bringing the Amateur Radio Community, this wonderful item. I have both the NanoVNA H4 and the TinySA Ultra plus quite a collection of adapters, attenuators and a 0-1Ghz LNA? I have used for repairs, and experimentation, and alignments of pass band cavities.
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Larry W8LM
ARRL Life Member- Licensed 59 years...
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Re: What accessories do I need for a TinySA Ultra?
Some people like to have a spare or backup set of calibration kits in case one gets lost or misplaced. Myself, I have a set for my NanoVNA H and a set for my H4. Both NanoVNAs are in separate cases with all adapters for each. Some use only one set for multiple VNAs. It is a individual choise. You will find the less expensive ones vary in resistor value. As an experiment I purchased 4 of the load parts of the cal. kits from different vendors and checked each load for actual value. Each was different. I then chose which ones was closest to 50 ohms and use those. I put the others in a spare parts or junk bin. Unless you buy the very expensive certified cal. kits, you will find most load parts in the inexpensive kits will run around 49.** ohms and 51.** ohms. Clyde KC7BJE?
What is the second calibration kit for the NanoVNA for? Or what kit should I buy off of amazon to do it? I have the calibration kit that came with the NanoVNA, can you post a link to the one I should get?
And maybe some links to attenuators that are worth buying?
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Re: What accessories do I need for a TinySA Ultra?
That was my thought. It would be ideal to have two 50 ohm resistors to calibrate the isolation setting, but not really needed from my experience.
Back to TinySA discussions.
Zack Absolutely no need to buy a second calibration kit.
The kit supplied with the nanoVNA is good
--
Designer of the tinySA
For more info go to
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Re: What accessories do I need for a TinySA Ultra?
Absolutely no need to buy a second calibration kit.
The kit supplied with the nanoVNA is good
--
Designer of the tinySA
For more info go to
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Re: What accessories do I need for a TinySA Ultra?
What is the second calibration kit for the NanoVNA for? Or what kit should I buy off of amazon to do it? I have the calibration kit that came with the NanoVNA, can you post a link to the one I should get?
And maybe some links to attenuators that are worth buying?
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Re: What accessories do I need for a TinySA Ultra?
For the VNA you need a second calibration kit, to get a second 50 Ohm load and barrel connector to do the ISOLATION step of the calibration process -- for S21 type tests. Amazon has inexpensive kits.?
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For the SA you need a handful of attenuators. The one you put first in line at the radio's antenna port is the most important. It must be able to dissipate the max power you expect to test. If you have only HTs to test (10W max power) that first attenuator is inexpensive. If you need to test at 50W, expect to pay much more...
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Personally all my attenuators are multiples of 10dB because their effect is easy to calculate -- divide by 10... E.g. 5W thru 10dB = 0.5W, thru 20dB = 0.05W etc...?
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Most here recommend a total of 60dB for a 1-5W input. I like 80dB... Don't be afraid to experiment?
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Re: What accessories do I need for a TinySA Ultra?
Also some higher-power attenuators. I have some 5W, 10W and one 50 watt attenuator (that one is 30 dB). If you're concerned about wearing out the connectors on the TinySA, just get a few straight-through or right-angle SMA male to female adaptors. Put one on the TinySA and leave it there. Then it will wear out, not the one on the TinySA.
I don't know if you'd need a DC blocker or not. I do not have one and never needed one. All of the RF equipment I have used already had DC blocked and only had RF on the output. Note, if you are going to connect something with higher power and suspect DC is on the output, you'll need something a lot bigger than the one you referenced.
I have various telescoping antennas that came with various SDR modules I've purchased over the years. Just about anything will work. One of mine has an MCX connector on it and I had to come up with an adaptor for MCX to SMA.
Also, as an addition to my last post, you can stack the SMA adaptors. I have two 20 dB and one 10 dB attenuator stacked to use with my HP 435B power meter. The maximum power to the 8484A power head I have is 10 microwatts.
Zack W9SZ
On Thu, Mar 13, 2025 at 7:39?AM Zack Widup < w9sz.zack@...> wrote: The main things I think of are a set of attenuators and some in-between adaptors for the various connector types. I have 2 watt SMA attenuators (male on one end, female on the other ehd) covering 1 to 10 dB in 1 dB increments, and then more attenuators up to 30 dB. I have attenuators rated to 18 GHz because I do a lot of microwave stuff, not just with the TnySA. If you don't plan on going that high in frequency, the ones rated to lower frequencies are fine. I have a bunch of SMA to BNC, N, UHF and TNC adaptors of various types (male to male, male to female, etc.) Also some cables longer than the ones that come with the TinySA with male SMA's on each end.
Zack W9SZ
I'm new here and new to my TinySA Ultra and NanoVNA. Trying to keep it affordable, I'm just trying to figure out what accessories I should buy first and which ones I should still buy but can wait until later. What attenuators should I get first? I have an assortment of connectors/adapters and I have these two attenuators, . And a 15w 0-500Mhz Dummy Load
Is there anything I should buy to protect the SMA connectors with adapters on the TInySA like some people have mentioned? And do I need anything for the antenna? Someone mentioned a DC blocker like this, Is there an upgraded antenna worth buying? I'd like to have a second one on hand as backup anyway.
I'm wanting to test out some Ham radio handhelds and my mobile Anytone AT-778UV Ham Radio. They are UHF/VHF. And then I'd also like to test out some CB radios.
I've been reading mixed reviews on everything so I figured I'd ask here before I started ordering things I don't need or end up ordering the wrong things.
Thanks for the help.
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Re: What accessories do I need for a TinySA Ultra?
The main things I think of are a set of attenuators and some in-between adaptors for the various connector types. I have 2 watt SMA attenuators (male on one end, female on the other ehd) covering 1 to 10 dB in 1 dB increments, and then more attenuators up to 30 dB. I have attenuators rated to 18 GHz because I do a lot of microwave stuff, not just with the TnySA. If you don't plan on going that high in frequency, the ones rated to lower frequencies are fine. I have a bunch of SMA to BNC, N, UHF and TNC adaptors of various types (male to male, male to female, etc.) Also some cables longer than the ones that come with the TinySA with male SMA's on each end.
Zack W9SZ
I'm new here and new to my TinySA Ultra and NanoVNA. Trying to keep it affordable, I'm just trying to figure out what accessories I should buy first and which ones I should still buy but can wait until later. What attenuators should I get first? I have an assortment of connectors/adapters and I have these two attenuators, . And a 15w 0-500Mhz Dummy Load
Is there anything I should buy to protect the SMA connectors with adapters on the TInySA like some people have mentioned? And do I need anything for the antenna? Someone mentioned a DC blocker like this, Is there an upgraded antenna worth buying? I'd like to have a second one on hand as backup anyway.
I'm wanting to test out some Ham radio handhelds and my mobile Anytone AT-778UV Ham Radio. They are UHF/VHF. And then I'd also like to test out some CB radios.
I've been reading mixed reviews on everything so I figured I'd ask here before I started ordering things I don't need or end up ordering the wrong things.
Thanks for the help.
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What accessories do I need for a TinySA Ultra?
I'm new here and new to my TinySA Ultra and NanoVNA. Trying to keep it affordable, I'm just trying to figure out what accessories I should buy first and which ones I should still buy but can wait until later. What attenuators should I get first? I have an assortment of connectors/adapters and I have these two attenuators, . And a 15w 0-500Mhz Dummy Load
Is there anything I should buy to protect the SMA connectors with adapters on the TInySA like some people have mentioned? And do I need anything for the antenna? Someone mentioned a DC blocker like this, Is there an upgraded antenna worth buying? I'd like to have a second one on hand as backup anyway.
I'm wanting to test out some Ham radio handhelds and my mobile Anytone AT-778UV Ham Radio. They are UHF/VHF. And then I'd also like to test out some CB radios.
I've been reading mixed reviews on everything so I figured I'd ask here before I started ordering things I don't need or end up ordering the wrong things.
Thanks for the help.
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Re: TinySA Ultra exists DFU when connected to PC
Found the solution on the community.st.com forum:
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dfu-util -s 0:force:unprotect -a 0 -D firmware.bin
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Re: TinySA Ultra exists DFU when connected to PC
I am facing the same issue on TinySA Ultra - on my PC (Win11) it exits from DFU mode as soon as I connect it.?
On linux it stays in DFU, but I can't update the FW - getting the same error as you did.?
Were you able to solve this issue?
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Thanks,
Tom
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Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
Had the same issue, I found if I set the marker to frequency mode then changed back to peak it worked ok.
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Dave
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Thanks Ian...
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I added some other functionalities also, so when testing is finished, I will create a new POST with a more meaningful subject description.
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ToniZG
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Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
Hi Juan & Xavier,
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It seems it connect to the tinySA (basic) but it doesn't plot anything.
The tinySA Ultra (without +) worked a bit.
The FM band preset show 87.5 till 102 MHz not 108.
Waterfall and panafall doesn't work. Neither could I set a peak marker.
Peak marker menu has same spanish menu's at the bottom.
I didn't have time to check the other menu's this morning.
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Maybe it's a better idea to update the tinySA-App written by Erik based on the work of Oneofeleven with help from DiSlord and others than to make a new app from scratch.
You are very welcome to do so.
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73 André
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Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
Suggestions for improvement:?
Display IF and video bandwidths and attenuator settings on the screen
It is customary to have the frequency legend at the bottom of the screen.
Best regards ,Don Brant
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Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
Hi Juan There is commands available to activate carious modes As far as I remember q p disable the various modes Kind regards Kurt ? ? ? Regarding the preamplifier control, there is no USB command to enable or disable it remotely. It must be activated manually on the device.?
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Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
On Tue, Mar 11, 2025 at 01:17 PM, Juan M0WWA wrote:
Regarding the preamplifier control, there is no USB command to enable or disable it remotely. It must be activated manually on the device.?
Use the 'help' console command to get a listing of all available tinySA Ultra commands. For controlling the LNA:
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lna ? ? ?usage: lna off|on
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Herb
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Larry Macionski
Clyde Lambert
Donald S Brant Jr
Kurt Poulsen