I have extensive experience with China, both as a project manager on petrochemical projects and equipment supply. ), Manufacturers part number "B39431-B3555-U310", footprint "QCC8C" eg eBay UK seller hfo_poland item 263991032577, Mini-Circuits ADE-25MH mixer (eBay) $12 for 5, 320 x 240 pixel ILI9341 2.8" TFT display (eBay) $11. 7th May:- There is a small modification required to my V1.0 PCB. This drawing gives an idea how the "simpleSA" is built. Im not sure that alone would keep the pirates at bay, but its at least an attempt and its a nice touch to boot. Episode 536See update: https://youtu.be/VjqbMDNlCBs (manual settings and newer firmware is improved)Some initial tests of the TinySA comparing against HP8921. NOTE: I think only the 240 - 960MHz version is suitable. does the tinysa have the ability to compete with a 10k dollar (or more) spectrum analyzer? As parts of it are based on open source NanoVNA (and other) code, it had to be open source. But its the few bad ones who give a bad reputation to all the rest. Just for completeness, I repeated the same test on the 2-m band. In fairness, I would think that you should add the followup link. (it's for DRAFT V2 PCB, NOT the v2 in Sch's above, so some parts are not required for the V1 PCB, refer to the Sch..). aaaaaa wrote a comment on CH552 USB Knob. Erik has chosen to rely on the tinySA wiki and some how-to videos for most of the documentation, and while thats understandable it also leaves a few holes that are up to the user to fill in. tinySA is very tiny handheld Spectrum Analyzer (SA). Hi, is there a similar device, but with a proper BAS output ? Thank you for the link. Many products made in China use components with dubious specifications or are outright counterfeits. Menu structure is here. https://www.arduino.cc/en/main/OldSoftwareReleases You will need to add the ESP32 capability to the IDE. Please note the assembly of the three PCB's is preliminary at this point, no shielding has been fitted at this stage. Will need to be updated as other features have been added by Dave, M0WID. But unfortunately the TinySA doesnt go high enough in frequency to let you see the 3rd order products of a 70cm UHF transmitter. Donations can be done via credit card or PayPal. Connected to a PC via USB it becomes a PC controlled Spectrum Analyzer, Rechargeable battery allowing a minimum of at least 2 hours portable use. The tinySA wiki is slowly being updated with info regarding the tinySA Ultra. Color display showing 290 scan points covering up to the full low or high frequency rang. The Ultra version brings enhancements to the frequency range, signal . I decided to remove the 12k resistors from the back of the PE4302 module (6 in all) Now levels are much better and well in spec at full supply (3v3) which is to be expected with the pull-ups. Sonny Supilanas has updated the log for Pi Radio Gateway. THE OVERLAY AND BOM HAVE NOT YET BEEN ALTERED. . I talked about this a bit in one of my $50 Ham articles, and weve seen comprehensive analyses of spurious emissions from these radios that are far more in-depth than anything I could come up with using the tinySA. The dropped a stand of drill pipe and it hit a crossmember. Wide tuning range, but varying circuitry afterwards. Use as a Panadaptor. tinySA v 0.3.' Dummy load tinySA commonly used configuration. The original software didn't support an in-built display but used a PC to show the scans. Cannot retrieve contributors at this time. The modification is cutting two tracks on the SA RF board only. View All 7 Messages In Topic. The screen is far too small for my meathooks, but without a proper stylus, I resorted to a plastic spudger that worked only most of the time. This means that a signal on the exact same frequency that the SA is currently at, is generated and displayed, forming a plot of the response. Some were serious, within the dynamic range and frequency range. I do also carry a NanoVNA because of its LCR metering and time domain reflectometry for cable faults, but I might give this one a pass since Im not a serious RF expert. . Badly. Again, this was only a rough test, with a test setup leaving much to be desired. Its a whole lot better than the RTL-SDR for lower frequencies The RTL-SDL (with the front end bypass for low frequencies) has a fixed internal sample rate 28.8 MSPS at 8 bits/sample, then decimated to a lower rate (1-2 MSPS) for the host. The following files have been uploaded to I searched here: https://tinysa.org/wiki/pmwiki.php?n=Main.MenuTree. A built-in calibration signal generator that is used for automatic self test and (low) input calibration. Pretty good though. The video compares the device to an HP 8591E spectrum analyzer. I also have a giant box of 2800mAh cells from Japan. More info as it progresses. The new topic will begin with this message. Its actually more of a function generator, since it can not only output a nice clean sine wave on the low output between 100 kHz and 350 MHz, but it can also modulate the signal (AM, narrow FM, and wide FM) and do sweeps both across a frequency range and over amplitude. If you don't have a 0 ohm part use a very low value, under say 100ohms. Sent: 16 May 2021 03:56. The Chinese company was sued in Chinese courts and they found that the cheating was so blatant that they awarded the US company damages. A higher performance SDR such as the ones made by Airspy and SDRPlay are even better for that but are more costly. IMSAI Guy TinySA YouTube video playlist (there are lots of them): https://www.youtube.com/watch?v=n6WEM3Npc&list=PLXDK0MeyK4ZgnYyh1INCSv_lhteEs4Tkt. transportation costs. I used an smd heat gun. Briefly, it involves removing some filters used on the Si4342 board. These parts are best fitted using smd components on the rear of the pcb. Anyone who has used a NanoVNA will feel at home in the tinySA interface. Theyre all between 800mAh and 1400mAh, and theyre also from China. Its not a huge deal to recover toggle the power and itll boot right back up but it can be annoying. 3 This is what the TinySA-App control screen looks like on a Windows PC. NOTE: this allows the logic levels into the PE4302 to be approx. A caveat: Im by no means an expert on spectrum analyzers. Load both RF boards with all components, except for the variations below (R35/R36). Nevertheless, this turning a spectrum analyzer into a oscilloscope is very useful if you want to see the modulation time domain waveform of an RF signal, especially when the RF signal is at a frequency much higher than what your normal oscilloscope is capable of measuring. Of course it depends on the use. For the proposed Tracking Generator function, an additional bottom half of the panel will be required. Previously the standard tinySA was released back in 2020. Go to file. Pedro Tomaz Alves liked TMS9918 VDP with SRAM video memory. I've started things off with the odd change just to get it basically working with the TinySA, it's given Erik the starter bits to continue with it. While there are similarities, the tinySA is NOT NanoVNA hardware. and from what i have learned so far watching folks put the tinysa up against lab quality spectrum analyzers, the tinysa is good enough for the girls i run with! It can also be achieved by swapping the ports in the software, but to avoid any confusion or forgetting to do it, in later software releases, it's probably best to do it on the PCB. Andreas Spiess did a review of that SA. One is on loan to the president of the local ham club, and hes already planning to buy his own. Be careful as there are signal output on the TinySA input port.Be a Patron: https://www.pa. This thing is obviously a NanoVNA hardware, the labels are painted a bit differently and its running an entire new software. When a 20dBm antennuator or more is added so that the reference is below -30dBm, it performed favorably in all but RBW. I recommend doing this. With this in mind, one has to be very careful with doing business with companies over there. Virtually no wiring is required, just the DC input if it's not being run from a USB port. I have a nanoVNA and a large desktop spectrum analyzer. ALSO, at this stage, don't fit the SAW filters on the TG board. V2.0 Looks much the same as V1,, just detail changes. As far as combining the two softwares, the short answer is no, as there is currently no hardware that could provide both the spectrum analyzer and VNA functions. See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. Presented here is a minimal cost, "tinySA(tm)", an instrument which can be home built quickly and easily, from low cost modules available on eBay for example. But I think it was around $60, and at that price Id say adding a tinySA to your toolkit is a no-brainer. If I want to check cables and antennas, Id take the nanoVNA. The menus/UI are remarkably close to the NanoVNA as well which makes me think that theres a lot of shared code under the hood. Color display showing 290 scan points . For those that prefer to read a document instead of browsing a wiki, there are two options.Kurt Poulson was so kind to write an extensive document explaining various aspects of the tinySA for a Danish Amatuer Radio magazine. The tinySA-App for Windows worked quite well and was used to generate the screenshots for Figs. The input/output specification of the tinySA is split over the 4 modes Low input mode spec: Input frequency range from 100kHz to 350MHz (with some limitations down to 10kHz) Input impedance 50 ohm when input attenuation set to 10dB or more. What's in the Box - The TinySA Spectrum Analyzer - SMA-M Antenna There is even a branch that is open source (last I knew) now called the simpleSA that is based off the original tinySA design. Refer to the Schematic and BOM, as some parts need to be fitted on the rear or top of the PCB using either smd or axial parts. Learn how your comment data is processed. *For reference only, these are the old draft Schematics. Page last modified on March 07, 2023, at 08:00 AM, Spectrum Analyzer with two inputs, high quality MF/HF/VHF input for 0.1MHZ-350MHz, lesser quality UHF input for 240MHz-960MHz or. Keep signals below -35 dBm and most of thee spurs disappear. And just for fun here is the IMSAI Guy NanoVNA YouTube video playlist: The tinySA designer, Erik, has a series of videos on the device, too: https://www.youtube.com/user/superduramen/videos. If you are aware of the tinySAs limitations (which Erik has kindly posted on the wiki), it works surprisingly well. local time. There is provision in Dave's code to use the simpleSA as a Panadaptor. Googling "TinySA", you will find a lot of reviews of it's performance by hams. June 29th, 2020: It has been reported that some Si4342 modules have low output in the "Tx" or local oscillator position even for the 150MHz input range due to the on board filters they use.. (The LO runs on the high side of the 434MHz IF, so the LO needs to sweep from ~434 to 584MHz.) Mine isnt that bad, but the NanoVNA to me without magnifying glasses is next to unreadable, and this one wouldnt change much, although Ill probably order one anyway just to support the project. (I do need to wear my glasses to use it, but thats true of the NanoVNA, too. and for the 64 bucks delivered it is probably the best 64 bucks i have ever spent on a piece of test equipment! Philip G7JUR In-case you missed Kurt's excellent Hamcom article at . Best way is with two soldering irons, simply heat both ends of each resistor at same time and the part will come off easily. One of the best parts of the NanoVNA is that its released under GPL v3. Significantly better bandwidth and a lower noise floor ~100dB for the frequency range spec. The mods are only if the TG function is to be used and you built TWO RF boards. Maybe you have not noticed, but there isnt much made in CN. Well worth the watch if you want to know about the device, see it compared to some heavy iron on the bench, see how and why it is used, and get a fel for the good, the bad, and the ugly. The same menu offers a self-test function too, which cycles through a series of ten tests that take about 15 seconds to complete. Apples to oranges. July 6 (the upper frequency limit AND Si4342 module issues.). With the basics out of the way, I took a look at the tinySAs built-in signal generator. Thats not the case. This project looks to be an attempt to close off and monetize a bunch of work carried out by others. 2 x EPCOS B3555 SAW filter 433.92MHz, ( $ ?? R25, 26, 27 are NOT on V1 pcb overlay and are currently not required. In the meantime, it has been bypassed using the wire you can see. Input Step attenuator from 0dB to 31dB (can not be used in combination with LNA). [IMSAI Guy] shows a few oddities that he didnt like, but overall, it seemed like a good value. As a beta tester, I received two tinySAs, versions 0.2 and 0.3, and as soon as they were available for purchase, I bought one. Tracking gen WORKS, see above at 24th Aug. Here's how I fitted them, using smd parts. Please, dont buy from CHINA, you may get an allergy. June 23rd, 2020: NOTE:- Erik's tinySA original design is for an approximate upper limit of 150MHz and the input Low Pass Filter (LPF) was designed for that range. You can view the tinySA output on your PC if you use tinySA-saver, which is hacked from NanoVNA-saver, and display the results as big as you can afford a monitor. NORMAL will display a new scan as soon as a signal in the scan causes a trigger event. $7.50, 2 x Si4432 "RF" module (eBay) (2 for $5.00). For only about an additional $10 US, you get a stand-alone instrument with the TinySA. (11th & 24th Aug, see above information) As for the needed software, that's beyond my capabilities. Thanks, I thought I was probably a couple of revs behind. Saw filters on the Si4342 board the power and itll boot right back up but can! Regarding the tinySA Ultra reference is below -30dBm, it seemed like a good.. 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