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I read the pdf, but when I power up the Ultra and look under config, I can't find the DFU. I must have missed something here. also the stm32 software is version 17, is this a problem? c.

I have a question regarding the Waterfall feature, I believe at the moment you can just monitor (i.e. watch live), is there a plan in the future to be able to record the waterfall and play it back over time? The way I use the TinySA it would enable me to identify a specific signal (i.e. store and forward device) that only transmits for a short period of time and at an irregular time? I currently place the TinySA in the target location, leave it in place for 2 or 3 days recording the signals which is really good but ideally I would like to be able to see the transmissions over time. Many thanks for your time in this matter and I must admit a really good piece of equipment!! Lee Johns

I work in film/TV sound production and was tooling around with my Tiny SA yesterday. I realized that I was getting pretty close to 0dBm at some point on a few UHF carriers. We use a 250mW transmitter at about 945MHz as part of our kit and it was on while I was operating the TinySA within a few feet. Most of the time I’ve had the -20 or -10 pad screwed on. I don’t think I’ve ever submitted the unit to prolonged overload signals heavier than what’s described above but I suppose it’s possible. How will I know if I’ve done lasting damage? What is the failure mode of these components? Will it be like a burnt lightbulb and be obviously broken or will it just become inaccurate? Do you have to worry about the entire spectrum bandwidth of the TinySA for possible overloads or only the frequency window you’re currently looking at? Any concern when the power is off? Also, what is the point of the built in attenuation if it cannot protect the input? In what scenario would you use it? It seems that using an external attenuator buries a lot of signals in the noise floor. Is the LNA the solution here for pulling it back up? The only experience I have with LNAs is at the antenna end of a long coaxial run to makeup for the loss of the cable. I don’t really understand why you would use it in an SA. Sorry for posing multiple topics. And thanks in advance for any info you folks might offer. Derek

So I guess this was made impossible to repair on purpose since there is no schematic or anything available for it?

We have a unit that also fails test 3 and Erik Kaashoek says to follow the input signal and see if it arrives at the mixer. I guess there are no schematics for this unit but can I at least find a block diagram somewhere so I'll know how to follow the signal? Thanks.

Links provided at: tinySA | Main / Updating the firmware I have been trying all day. I also tried from different locations and different Internet providers. I'm guessing I should just be patient and wait for these to come back up? Just checking in case they have been moved. I am in the USA. Thanks!

Due to some technical mishap the server hosting the firmware is down. Hope to solve this soon. -- Designer of the tinySA For more info go to https://tinysa.org/wiki

Hi everyone, I'm unable to access the site http://athome.kaashoek.com/tinySA/Windows/ and all other pages on this domain. It seems like a global issue, as my availability test shows the same problem worldwide. You can check the results here: Website Availability Test. Does anyone know where I can find the latest version of the TinySA software for Windows? Or could someone possibly reach out to the site owner to check the issue? Thanks in advance!

TinySA Ultra says max 4mw signal input. If I buy a 50watt 50db antenuator & use it for 5 to 50 watts in. Will the tinySA still read the lower wattage input thu that? Or will the antenuator just kill all the signal & be over kill? I ask because I want to be able to measure handhelds & mobile radios that do 5 to 50 watts.

Hello, I am thinking of buying tinySA Ultra Spektrumanalysator, especially because it has a zero span modus function. I studied decriptions, videos and posts in this forum, but could not find an definite answer to my questions to that: Is it possible in zero span modus to measure (or calculate / visible count) the pulse frequency of a RF signal and hear the sound of a demodulated RF signal ? Example1: WLAN/WIFI at 2.400 MHz. Is ist possible > to measure/see/calculate the pulse signal of 10 Hz > and to hear the typical WIFi signal sound ? Example2: DAB-T (digital radio) at e.g. 208 MHz (in Austria). Is ist possible > to measure/see/calculate the pulse signal of 10,42 Hz > and to hear the typical DAB-T signal sound ? Note: I do not want to hear radio broadcasting but listen to the pulse signal. It would be very fine, if you could help me further - thank you. Greetings, Ron

Hi, I have a TinySA Ultra (SW version : tinySA4_v1.4-156-g4eb315d HW version: V0.4.5.1.1 (185) and I want to use its audio signal demodulation capabilities (FM/AM) I have plugged the headphones into the audio jack and I don't hear any sound. Should I take any additional action? (Settings, Firmware, etc.) Thank you Juanpao

Hi Group, I agree with the suggestion to get away from the 'ham' topics, however, RF antennas from all aspects of transmitting or receiving will play a part in both disciplines. That said, shouldn't we discuss what we find with various antenna designs, both pro and con? The only suggestion would be to only talk about what works and what may not and in that light stay away from+0J-,* math. We can leave the math for our handy dandy VNA. Example: What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? Mike C. Sand Mtn GA

Hello all, Yesterday i got a offer for RIGOL DSA815-TG (used 8 years old) for euro 675,00 (retail aprx euro 1300) So basically a good deal and before I got my TinySA Ultra (and NanoVNA/LiteVNA) it was on the top of my "I want that in my shack" list. The screen is bigger 8" vs 4", it has physical buttons for operating vs. touchscreen, build in tracking generator which the TinySAUltra doesn't etc, But after comparing it with the specs for PhaseNoise and DNAL TinySAUlta Phase noise at 30MHz and 10kHz offset -92dBc/Hz Phase noise at 30MHz and 100kHz offset -108dBc/Hz DNAL -153dBm/Hz (LNA Off) / -169dBm/Hz (LNA On) (DANL degrading in ultra mode 10dB above 2.5GHz, 25dB above 5.3GHz) RIGOL DSA815 Phase noise 10kHz offset -80 dBc/Hz (frequency chart available in spec sheet) Phase noise 100kHz offset -100 dBc/Hz DANL -130 dBm (PA Off) / -150 dBm/Hz (PA On) 100KHz up to 1MHz. DANL -135 dBm (PA Off) / -155 dBm/Hz (PA On) 1MHz up to 1.5GHz I think I let it pass. Imho the feature wise the TinySAUltra covers them all and even adds new features like the waterfall etc. missing on the DSA815-TG. And in combination with my LiteVNA the tracking generator is covert to. So Erik, many thanks for designing these great tools and make them available to us for a reasonable price. -- 73 Lex PH2LB https://www.ph2lb.nl/

I'm building a 1kW+ HF power amplifier. I've a 2kW homebrew dummy-load with a 60dB PAD (measured with a nanoVNA it's around 60db flat to 100MHz). With an IC7300 at 100% FM, 7.2MHz, the tinySA reads -10.5dBm (As expected: 50dBm less 60db = -10dBm) (Checking the linearity from from ICOM at 10% to 100% indicates all is working well). So far, so good. Inserting the AMP & LPF: there's a gain of around 12dB (after a 15dB protective PAD at the input of the AMP). Aligned with the device specification. Input: 42.5dBm output 52.5dBm (i.e. -7.5dBm as measured by the tinySA) When the input is increased to 50dBm, one would expect around 62dBm (1600W) at the output : assuming nothing has entered compression. However, the tinySA reads -2.5dBm which equates to 57.5dBm at the dummy-load (560W). The AMP is drawing 1,426W DC, the device's datasheet suggests an efficiency of around 80%. So, one might expect the tinySA to read around 0dBm, indicating 60dBm at the dummy-load. Checking with a thermal camera, nothing in the AMP (transformer cores) or the LPF cores appear to be getting overly hot (not 850W hot!). My question is: Is it likely that the tinySA has become non-linear once above around -10dBm at its input? Is there a sweet spot where the tinySA is most accurate? I haven't manually configured the tinySA's input attenuator: i.e. it's in Auto mode. Been using NanoVNA-APP with the tinySA. Yep, my next test is to insert a 10dB PAD between the tinySA & dummy-load (the AMP is currently off line for a completely different reason). Thanks in advance.

Is there a way to collect the data from multiple displayed traces? I can collect the first trace with "data 2". I don't see how to collect the others.