Sdruno decimation I was playing around with decimation and setting the LO closer to the radio station I was interested SDRuno. what does the DEC (Decimation) setting actually do? Please try to explain it in terms of someone who's not familiar with the design of the RSP1 hardware. Using SDRUno I have some audio short clippings, only when BW is 8 or 10 MHz. If you tune to 10Mhz WWV, the LO base freq will be -8000Hz or 9. SDRuno is the of decimation has to be done. The only way that SDRUno would prevent me was when I had decimation set to a value greater than 8 - this was in LO-IF mode. Some of the panels in SDRuno are fixed number of Decimation of Samplerate is an option for very old and slow computers: Before decimation, a very simple and fast low-quality filter (sum) is applied: y(k) = sum over x( k * (1. 5 KHz, remaining ltering and decimation is done in the weatherfax plugin itself. The FFT handling is modified, rather than the FFTW3 library, a choice was made to use the KISS library, the reason being that the sources could be included, preventing potential Hey all. I don't seem to notice anything different to my received signal but that might be just me. Happy New Year. am I MISSING SOMETHING? glovisol. 2 user manual on page 70 that explains how to save ‘profiles. (MAIN panel, DEC). Your spectrum display is showing about ~110db worth of signal. It's probably only a few hundred kHz Hi guys have a small problem with sdruno using my rsp1a. If there is an option for a persistent decimation level please let me know. G. All Messages By This Member #10129 Recording audio failed for me but IQ recording works fine. Every so often if I use the band function to switch between HF ham bands, my mode changes from ZIF to LIF and I lose my bandwidth option and have only the decimation button. However, I’ve found that decimation saved in a dual or slave session will be recalled when using I put 50dB attenuation between the 25MHz source nad the 2nd input of RSPduo The CAL offeset was set to zero in SDRUno. Posts. In the latest v1. I sometimes run SDRUno on a rather elderly laptop that is not really up to the job and I find that increasing the decimation is the only way to avoid breaks in processing. I am using the latest version of sdr uno, 1. 42 build 1710 (10th May 2024) Note: This is an intermediate build and not the last release of 1. IF, MPX & Audio spectrum is getting “squeezed and shifted to the left”. You should see these roughly central in the panel. What I've noticed is as I increase Decimation, the tuning indicator moves to the right in the Main SP panel. 2 of SDRuno is now released. What can I do? The software is designed to auto-populate with a layout that is defined by the screen resolution. In a recent YouTube video Tech Minds shows how to decode GMDSS (Global Maritime Distress and Safety System) messages which are broadcast on MW and HF. Decimation I've never messed with because I use HDSDR and it handles that for me, especially with its SDRuno SDRuno Release Notes Version 1. Decimation is a way to reduce the number of samples delivered to the software. Decimation – The sample rate can be decimated by either 2, 4, 8, 16, 32 or 64 to achieve better noise performance. ) via ExtIO dll interface. From the version 1480, in SDR#, when SDRuno records all signals within the bandwidth of the spectrum that is being monitored. Further filtering and decimation is dome by the plufgin. sdrpl The SDRuno software can provide a samplerate of 62. SDRuno is the official software for the SDRplay RSP line of receivers, and the beta can be downloaded from their website (note the plugin will not work for the RTL-SDR). ) I tried my SDRPlay RSP2 on a Dell E5400 Laptop (Intel Earlier this year SDRplay updated their SDRuno software to have plugin functionality. Recently they've released version 1. Activating decimation in FM band So you can achieve further reductions in Final SR by using Decimation. This is to fix the ini file corruption issue we posted about recently, but it also introduces some new features and more plugin functionality. I got the idea behind decimation and I was curious to see / hear improvements in signal / SNR. Another way to find information is to do a search on the forum. 41 was fully released today. (It now begins to stutter at 4MHZ Decimation 1. This forum ran until 2019 and is now closed to new posts. Tech_Support Posts: 499. Example: Intel Core Duo CPU T7300 @ 2 GHz. DEC = 4 will take you down to 500kHz displayed width for example. My assumption: The signal should match exatctly the 25MHz and the signal should also be stable with no shift. Also available with SDRuno V1. Virtual audio cable used. 14 SDRuno. SR – Sample Rate for Sound Card Input when not using RSP or ExtIO radio REC PANEL - This brings up the record panel SDRuno is the official software for the SDRplay RSP line of software defined radios, but the EXTio version also supports the RTL-SDR. 6 posts • Page 1 of 1. Note that on a 2 MHz wide spectrum, it is pretty hard to detect small signals, like the navtex one, so use the zooming facility on the main spectrum window to show a smaller spectrum. • Save I scanned thru the sdruno manual and I see references to decimation but I haven't found anything that tells me how it can make my listening better. This means that the specific features of a particular SDRplay RSP receiver model are enabled automatically within SDRuno. READ THIS FIRST installing the plugin. Left click that and a dropdown should appear. Rick Kunath, K9AO • Decimation and the LOLOCK state are now correctly saved and recalled within a profile. I put 50dB attenuation between the 25MHz source nad the 2nd input of RSPduo The CAL offeset was set to zero in SDRUno. 56 MSPS. Please do not forget to let us have the results of your tests: this would be very SDRuno comes with a full manual (pdf) and SDRplay fans and beta testers of SDRuno have also released a free SDRuno cookbook guide (pdf). . I'm sure a number of folks with marginally powerful computers will be happy when 1. It's the VFO that is used to demodulate the signal that you are interested in. 4 MSPS for the RTL-SDR ; SDRplay Releases SDRuno: Free SDR Software for the RSP ; In one of his latest YouTube videos, Manuel Lausmann has been testing the RTL-SDR Blog V4 on SDRuno. 4. Last edited by CaptainNemo on Thu The final decimation is to 375 samples/second (We start here with 192000, the SDRplay will send 2000000 Samples/second to the SDRuno framewirk). and in IF Mode select LOW-IF and put Decimation to 8 in the Decimation window: the interference will disappear. Setpoint (dBfs) – Sets the target level power at which AGC routine will attempt adjust the power on the ADC input. Then selected the AIRBAND preset and SDRUno crashed. SDRuno is also compatible with the RTL-SDR. This topic has 0 replies, 1 voice, and was last updated by . Dear group Last year (and recently) I wrote and adapted some plugins for the SDRuno environment. What's also very interesting is their road map which states that future versions of SDRuno will have Curious, does it work if you set the Decimation back to 1?-- Mike. 22 Improved UI. The plugin operates with an input sample rate of 62500 samples/second, this requires the setting of the mainwidget to a samplerate of 2000000, and a SDRuno comes with a full manual (pdf) and SDRplay fans and beta testers of SDRuno have also released a free SDRuno cookbook guide (pdf). The first post is a tutorial on the set up and use of SDRUno. 23 I was limited to 4 Mhz. At the bottom of that list, Left click on "User Manual" and the SDRuno user manual will open. • If decimation had been set before the 10m band was selected, the decimation value would be wrong after the band was unset. First of all, set the Sample Rate to 2 MHz and the Decimation to 1 (both these settings are in the small MAIN window). The main new feature is the addition of the scheduler facility which allows users to easily schedule recordings. If you use Zero IF mode and use a sample rate of 2MHz with a decimation of 8, then right click on the bottom right corner of the SP1 window and select the smallest window size (528), then SDRuno can zoom into 3. You will now Launch SDRuno and click the PLAY button, remember that if the RSP(x) is in ZERO IF mode, give frequency separation between the VFO (top frequency) and LO (bottom frequency). diysdr Erwin, have you tried the decimation feature in sdruno? Do you think it works properly. The easiest way to see it is to find the "SDRuno Main" screen. 32 release of SDRUno a diversity feature has been added. A decimation of 16 is the largest number I can select and stay on frequency. It looks as if under SDRuno 1. The guide starts from the download of SDRUno, shows how to select the Part of it will be done by the half band lters in SDRuno, the resulting decimation is dome in the plugin implementation. SR – Sample Rate for Sound Card Input when not using RSP or ExtIO radio REC PANEL - This brings up the record panel SDR Options . Over on our forums user qrp has released a modified ExtIO that allows the direct sampling mode to work correctly in SDRUno. 23. 192/Decimation 4 Which confirm the result that you advised - thank you. What's also very interesting is their road map which states that future versions of SDRuno will have Unfortunately the SDRuno Main SP shows a LO of 8,830,000 but the frequency is not showing the Kenwood frequency (example: 7. In particular have you noticed that when you go to 32 decimation the frequency listening to I'm using latest SDR# community package, testing the decimation feature with SDRSharp. Decimation and dynamic range. 23: all works fine, save for the DECIMATION WINDOW: sometimes it appears on its own, but most times it does not show up at all. and 2. Is there a reset to default that I should try? _. Keypad buttons now not only take you to the specified band, but the sample rate and decimation are changed to enable “band framing” – allowing you to see all of the band within the display The "fax" plugin for SDRuno is a plugin for decoding weatherfax signals transmitted on shortwave READ THIS FIRST installing the plugin The weatherfax signal has a width of less than 1 KHz, since the minimum width of the samplerate from SDR devices is 2 My second observation is that changing decimation affects the measured carrier frequency. I would think there should be a setting within SDRuno. At 10 Mhz B/W, CPU usage runs about 14% with the API using about 5% for a total of 19%. Same results if I swap the antenna. try decimating the signal using • If decimation had been set before the 10m band was selected, the decimation value would be wrong after the band was unset. It's defining feature is that it has two receivers in one radio, which should allow for interesting phase coherent applications such as diversity. Sunking Posts: 5 OK I have had my RSP3Pro for a few days playing with it trying to figure out how to set up Sample Rate vs Decimation and how it effects SNR and Sensitivity. -Noel. The ExtIO allows you to manually set the tuner In LIF mode you'll see the sample rate, set that to 2 and the decimation below it to 32. I suspect this places the dynamic range of the RSP2 in the same range as the RSP1A, possibly a good bit better dynamics than the typical user is running their RSP2 in. 22 January 15, 2018 sdruno_update_1p22 SDRuno v1. The plugin takes the IQOUT port provided by SDRuno, a port that delivers I/Q samples (well, actually the samples are Q/I) with a speed of 19200 samples per second. 1002 by NN4F & KD2KOG<br /> 5 In the longer term, all versions of SDRuno will migrate to the Service based API. The default width of the spectrum scope is 2 MHz. You simply ensure you have a suitable antenna for 1. decimation=8 (no other values in the drop down list) final sr= 0. My frequency is about 1-2 Hz off. 00MHz if mode=zero if if bandwidth=600kHz sample rate(mhz)=6. 8 GHz machine with 8 GB RAM as minimum requirement. The one Start SDRuno with maximum RF gain and only decrease if you see the yellow Overload alarm start blinking. 1 using a RSPdx SDR. You must manually tune sdruno this way to set sdr receive filter range on the desired freq. 4 is available to download from This happens even with decimation set to 8, narrowing the bandwidth of the SDR receiver. sdrplay. The official software package of the SDRplay range of products is SDRuno and it has recently been updated to version 1. Settings for HF. 536 MHz. When using SDRuno CAL function to calibrate the TCXO to a reference frequency, it seems that there are large discrepancies depending on what sample rate and decimation I choose For example, tuning with a sample rate of 2 MHz and decimation of 4 gave me a final CAL adjustment of -0. The SDRuno psk plugin is a simple plugin to decode a psk signal that is tuned to. Good luck in mySdrPlayback is a program for MacOS that allows you to easily browse through IQ recordings created from multiple SDR programs. I see that it narrows the bandwidth and I think there is a bug in the software when I go to 32 bit decimation it actually changes the frequency I'm listening to although the dial stays the same. This will give you access to the Sample Rate (SR) and Decimation boxes. (10 Mhz) of my RSP2 @ decimation=1. SDRplay family is 2000000, a lot of decimation has to be done. 5 KHz, Interestingly, once this occurs it persists even if SDRUno is closed and re-opened. c, handling the result. SDRuno is the official software for the SDRplay line of low cost software defined radio devices. A larger value will SDRuno does not create a nice layout of panels on my screen. • Main panel SDRuno is the official software for the SDRplay RSP line of receivers, and the beta can be downloaded from their website (note the plugin will not work for the RTL-SDR). 2 Release Notes (27th October 2017) • Decimation filter improved for reduced spurious aliasing • Decimation values optimised for performance and usability • Default demodulation filter bandwidths selected to be appropriate for major Ham and broadcast bands In any case keep Bandwith as small as possible and Decimation as high as possible and use just the main VRX. SDRplay have just released a new short video detailing the way Squelch works in Version 1. Trouble is that I do not think there IS a trigger since when it happens it is always at The key takeaway is to look at the SDRuno v1. Re-launched SDRU and tried to set up a custom preset with: Main decimation = 1 (SR = 2000000, IFBW = 1. 2 has been released. These guidelines will help you avoid crashes. • If decimation had been set before the 10m band was selected, the decimation value would be 6 SDRuno Cookbook V1. My primary use of SDRuno and RSPduo is while operating mobile seeking out digital data on That's what I missed in SDRuno, and yet there is such a function! Place the mouse pointer in the AUX SP audio area. R820T driver. 25MHz if mode=zero if if bandwidth=200kHz sample rate(mhz)=8. It includes the much requested full scheduler facility which allows you to set up numerous recording events for your RSP. Paul. It's really annoying having to reset the decimation when changing the frequency from the memory panel, etc. (SDRuno and the API are only licensed for use with genuine SDRplay hardware and should not be used with fake or clones of SDRplay hardware/) Release Notes: Release notes for all versions of SDRuno can be found by clicking here Known Issues: • SP2 CWAFC drift issue (Zoom/window size/freq display) SDRuno 1. Diversity reception was demo'd back I'm having problems as well in trying to scan anything in the FM/VHF band. I am also able to run dual tuners in SDRuno While I've got some attention here, I noticed that the ability to choose decimation has disappeared. DEC – Decimation, only values allowed can be selected<br /> PLAY – Starts the radio<br /> MEM PAN - Opens up the Memory Panel<br /> IF GAIN Reduction - this slider can be moved if AGC is turned OFF<br /> IFBW - shows the bandwidth and either LIF (LowIF) or ZIF (ZeroIF)<br /> SDRuno Cookbook V1. What I did was, on a whim, increased the Decimation to 8. Only the VRX->RIG and RIG->VRW work. Uploaded by RTL-SDR experimenter Hayati Ayguen (hayguen on GitHub) has released a version of rtl_tcp and an ExtIO module that allows access to normally hidden tuner settings. The "fax" plugin for SDRuno is a plugin for decoding weatherfax signals transmitted on shortwave. In this update to the manual, we I like SDRuno for its DSP processing and decimation. Try it with a lower decimation value. 8 MHz) and a Decimation factor (DEC) of 8. That stopped the audio cutting in and out. In Decimation appears 3 times in the User manual but doesn't say what it is used for. 1 post • Page 1 of 1. 41 of their SDRUno software platform. Although designed and tailored for the SDRplay, SDRuno also supports any radio with an ExtIO interface available, such as the RTL-SDR. All other benefits are secondary in nature, e. SDR4Everyone: Getting Started with the RTL-SDR and SDRUno ; Mike’s SDRuno Tutorial Series ; SDRuno Updated to V1. The This SDR stuff is totally new to me so I'm learning as I go. E. The displayed frequency span is determined by the final sample rate used by SDRuno. • Phase and amplitude lock buttons in the Diversity panel. setting an equivalent sample rate without using decimation. This is great if for example you wish to automatically record a shortwave programs Greetings, I rarely operate SDRuno with a Sample Rate greater than 2. 41 released today. Unlike their other software, SDRUno, SDRconnect is multiplatform and comes with a cleaner interface. Andy. Reason: No reason. In SDRUno, sample rate and decimation are individually configurable. Thus, I was forced to set squelch at -85 dB which was SDRuno is the official software for the SDRplay line of SDRs and is a slightly modified version of the 'Studio1' software which was previously acquired by SDRplay. Note however, that the main spectrum display displays the input spectrum, and it is obvious that a signal with a width of say 30 Hz Nevertheless, since I am an enthousiastic user of the SDRplay devices, and the plugin interface for plugins in SDRuno is reasonably easy, I converted some of the decoders that were written for the sw software to plugins for the SDRuno environment. 00 decimation=None (no other values in the drop down list) final sr= 6. That's set from the soundcard contrrol panel under properties. Plugins are there for weatherfax, FT8 psk, rtty, navtex, cw, drm, acars and wspr plugins. If set to 7 or less, audio is perfect. If that yields a greater dynamic range, I can see that as a practical advantage. Back in 2020 we posted about a modified ExtIO interface which exposed advanced RTL-SDR driver settings such as decimation, manual gain and tuner bandwidth and filtering controls. 4 posts • Page 1 of 1. Press the right mouse button and drag the audio area left or right to cut off the interference of the adjacent channel. The VFO is a frequency that you can tune to within SDRuno WITHIN the available spectrum as defined above. 192 MHz sample rate and decimation 4, this will suffice for most if not all things you want to receive with the RSP, and you will never encounter issues with the center DC spike. In their latest 'Preview 5' build the team has added various features listed below. My RSP 1 was connected to the "high" Sky Loop antenna which was recently the reference antenna for the QRM X-Phase Elimnator, but I will write about it in a separate post. • Cancelling wav file open window on start-up allowed SDRuno to continue to open with no input. So for example, whatever bandwidth you are monitoring (as determined by your sample and decimation rates, but up 10 10 MHz), anything within this segment of spectrum will be recorded. Keypad buttons now not only take you to the specified band, but the sample rate and decimation are changed to enable “band framing” – allowing you to see all of the band within the display SDR4Everyone: Getting Started with the RTL-SDR and SDRUno ; Mike’s SDRuno Tutorial Series ; SDRuno Updated to V1. There have been some excellent references on the topic, may I offer a simplified, practical approach? The Final SR shown in the SDRuno Main Window is equal to the Sample rate (SR) of the A/D divided by the decimation value (DEC). Example if I set SR = 10 Mbs and Decimate by 1, and enter 5. NavTex is a marine digital data radio service designed for transmitting information like navigational and meteorological warnings, weather forecasts and maritime safety information. 192 and DEC set to 4. SDRUno is the official software of the SDRplay, but supports the RTL-SDR too, albeit with an artificial 0. The SDRuno setting is then to a samplerate of 2 MHz, and a decimation factor 32. SDRSharp is set to USB mode, 2400 bandwidth, sample rate 768 ksps, AGC off, IF noise blanker on. 0 Mhz I see 0 to 10 Mhz • If decimation had been set before the 10m band was selected, the decimation value would be wrong after the band was unset. For example, I just completed a search using the word "decimation". A single tuner at 10 MHz bandwidth needs about 35% CPU with SDRuno 1. The goal is not to explain what every option does (for that, see the manufacturer’s documentation for the specific device), but rather allow users to find the right flags in CLI mode. Just received the RSPduo, downloaded & installed SDR UNO V 1. pmendes Posts: 2 Joined: Fri Dec 02, 2016 7:44 am. as fixed values in LIF mode) Low = 146500000 SDRuno can be reset back to default state. Is it possible that SDRUno has a bug at that point? My experience is that it reduces the CPU load. You can adjust the sample rate and decimation to better fit the IF output port bandwidth. The current range of RSP hardware products support IF bandwidths of 200 kHz, 300 kHz, 600 kHz, 1. zero IF/SR 2 Mhz/Decimation 8 2. Recently the software's author (@ChrisSmolinski) Tweeted that he's added support for SDR# and SDRUno IQ recordings. dll" file, using the SDRuno plugin API. Based on this experience, I would advise a dual core, 2. 8 (2. Part of it will be done by the half band filters in SDRuno, the resulting decimation is dome in the plugin implementation. luv2boat Posts: 3 Joined: Wed Jun 08, 2016 4:59 pm. Is it possible that SDRUno has a bug at that point? The SDRplay RSPDuo is a 14-bit dual tuner software defined radio capable of tuning between 1 kHz - 2 GHz. If it is much narrower than this, you must be zoomed in. This should give a visible span of about 2 MHz. SDRuno is a complex piece of software with many features and settings, so it's great to see a comprehensive video tutorial like this. So today I set decimation to 16 which I believe would make my IQ file much smaller and it did. 0 MHz. Best operation with Decimation settings at 4 or more. In the video Tech Minds shows how to set up SDRuno to work on his active ADS-B antenna by activating the bias tee, and how to load and activate the ADS-B plugin. The recorder seems to simply write the post-decimation data stream as a WAV file - there are no supplemental sampling controls in the Recorder function. It would be a useful enhancement in SDRUno 1. 12 I can only get a maximum of 1024 kHz with the SR set to 8. Can you prove to yourself that your filter’s positive-frequency transition region is centered at 128 kHz? Your Over on his sdr4everyone blog author Akos has uploaded a tutorial that shows how to set up the recently released SDRUno with the RTL-SDR. I have reported this issue but since I was not able to identify a trigger, it is unclear if it will get fixed. Decimation defaults to 1. _,_ I don’t believe anyone has responded to “Diyer” regarding his query. In particular have you noticed that when you go to 32 decimation the frequency listening to actually changes. The 48,000 is referring to the sample rate of the soundcard in the PC. 4 Application instance SDRuno can run in multiple instances using multiable RSP devices. • SDRuno could crash on start-up if the memory bank referenced to be open was empty. If you’re using LIF which starts at 1. An example on 693 kHz of Main SP Offset (with ZIF) is: Offset(Hz) at SR: ===== Dec 2M 4M 8M these are to clear up doubts how RSP/SDRuno operate and whether there are any problems here. This implementation requires an input sample rate of 62500 samples/second, this requires the setting of the mainwidget to a samplerate of 2000000, and a decimation of 32, as shown in the picture One should realize that the SDRuno spectrum display shows a band of 62. Version 1. The weatherfax signal has a width of less than 1 KHz, since the minimum width of the samplerate from SDR devices is 2 For decimation by 8 the center of your filter’s positive-frequency transition region should be located at 128 kHz. He writes: In this video I am presenting Airspy+SDR# vs SDRplay+SDRuno in the real world, receiving very weak FM SDRUno is set to USB mode, Wide BW Noise Blanker, Noise Reductor on, 2800 selectivity filter, decimation 8. I'm using an RSP1a. Thanks. From the cookbook it appears that SDRuno is also compatible with any SDR that supports ExtIO modules, like the RTL-SDR, although as noted in the press release functionality for other radios may be reduced. In addition to some UI improvements for new users, the main changes are pasted below. June 14, SDRuno 1. 50. Each SDRuno Version 1. The one SDRuno 1. If you leave the IF bandwidth at 8 First of all, change the mode to ZIF (zero IF). 536 MHz bandwidth Last week SDRplay released version 1. At the beginning of November, SDRplay Released version 5 of their SDRconnect software. The SDRuno Cookbook by NN4F & KD2KOG has also accordingly be updated with information about the new features. Decimation reduces the bandwidth that the SDR is covering. In the video he explains the DSC (Digital Selective SDRuno 1. 1 MHz and 2 MHz) whereas in ZeroIF mode you can have any sample rate between 2-10 MHz and combined with that the decimation values enable you to have much I am using SDRUno V1. As I 6 SDRuno Cookbook V1. This is what is meant by recording in I/Q format. There are some screen resolutions that we have not encountered before and so they are not supported for auto-population. 00 decimation=None (no other values in the drop down list) final sr= 8. com/https://www. Resource linkshttps://www. SDRUno is SDRplay's official software for their RSP line of software defined radios, but In this video Mike shows the basics of SDRuno v1. 9kHz of bandwidth. These are my personal observations, perhaps SDRuno 1. ’ Pages 57-69 of the manual includes details on using the 'Memory Panel' for storing frequencies and modes stored in memory banks. 01. • Two extra zoom levels for the SP2 panel. I don't know why I did soI just thought I would give it a try. I think this is related to bandwidth - the receiver bandwidth must be greater than the demodulator bandwidth. Click the OPT button and select Reset to Default Settings from the drop-down menu. To avoid any issues with these things in first place, just use Low IF mode with 8. The final sample rate must be equal or greater than the IF bandwidth selected. This allows third party programmers to implement their own decoders and software which interfaces with SDRuno directly. SDRconnect is a relatively new official software platform for the SDRplay line of devices. Using the SDRuno EXTIO Edition with an RTL-SDR and other SDRs ; ExtIO_RTLSDR# – Modified ExtIO • Auto-start the IQ stream on SDRuno start-up (enable in the OPT menu). SDRuno is a spin-off of the (recently acquired by SDRplay) Studio1 software. 4 of SDRuno (at the time of writing, a very stable “RC4” version 1. The default input device is the SDRplay RSP but the input device can also be a soundcard (WME or ASIO), a pre-recorded IQ file or an external SDR receiving hardware (as Perseus, SDR-14, QS1R etc. Tried a freshly-booted instance and it works ok on the AM preset. 146. com/rspdx/https://www. Activating decimation in FM band results in a muffled, strange sound. 23 with such an older device reduces the load on the system quite markedly. 40. 31 I assume that the <MAIN> Panel is the small one marked SDRuno MAIN And yes I accept that it would be logical to simply toggle the <bias tee> switch There are quite a few options/settings there: <OPT> <SCANNER> <REC PANEL>, O <SP1> <SP2> <RX> <a green square> <DECIMATION> <ADD VRX> <DEL VX> <LO LOCK> <RF Discussions about everything to do with SDRuno. SDRuno V1. 3. SDRplay writes the With a spurious mixing product, if you change the LO frequency in SDRuno, the apparent frequency of the spurious mixing product will also change. I'm using it I'm using latest SDR# community package, testing the decimation feature with SDRSharp. 2 Release Notes (27th October 2017) • Decimation filter improved for reduced spurious aliasing • Decimation values optimised for performance and usability • Default demodulation filter bandwidths selected to be appropriate for major Ham and broadcast bands SDRUno, things I noticed today and questions Wes S. Some capacity & speed can be improved by going to ADVANCED SYSTEM SETTINGS, settings: PERSONALISED and Have SDRuno’s Volume slider (RX Control) at about 35-40% Upper sideband is recommended but I found the best mode to use for L-Band ACARS or L-Band STD-C decoding is DIGITAL with a filter width of 3k. • Start SDRuno with just a wav file. Sony ICF-2010 Sangean ATS-909X Icom IC-R71A & IC-7300 Tecsun PL-660 Kenwood R-1000 & R-5000 Yeasu FRG-7 SDRplay RSP2 & RSPduo Airspy HF+ & Discovery JRC NRD-535D CountyComm GP-5/SSB Pixel RF Pro-1B Wellbrook ALA1530LNP. Any ideas or is this normal Over on his sdr4everyone blog author Akos has uploaded a tutorial that shows how to set up the recently released SDRUno with the RTL-SDR. Forum rules. If I select 32, the tuned frequency is somewhere to the right past the display. As a direct consequence, the data flow sent to the PC is It also exposes decimation controls, tcp connection features like auto reconnect and persistent connection, manual IF gain control, the ability to choose USB vs LSB tuning, and the ability to choose the highest stable sample rate of 2. Changing the decimation always restores normal operation. This happens even at low CPU, ~15% and any sample rate/decimation, and results in gaps in the saved samples when I'm recording Discussions about everything to do with SDRuno. 1. Does anyone else have issues with SDRUno stuttering? Every 20 seconds or so, SDRUno's audio and spectrum will go silent/freeze for about 250 ms this severely affects the data received. Erwin, have you tried the decimation feature in sdruno? Do you think it works properly. The first is by Mile Kokotov and he compares the reception on a very weak broadcast FM station, with several strong signals surrounding it. 24 comes out. I was playing around with decimation and setting the LO closer to the radio station I was interested In this video I am presenting Airspy+SDR# vs SDRplay+SDRuno in the real world, receiving very weak FM broadcast station in the terrible conditions, with very strong signals around. Thanks, I tried to reproduce the issue of not being able to select WFM or SFM. Unfortunately in any given condition I found that raising the Decimation can appreciably reduce the sensitivity. If you open up the advanced tuner settings panel (ADV) from the main panel, you will see the Final SR at the lower left hand corner of the ADV window. - go to the "programs" list You should be able to enable a decimation factor of 16 with an 8 MHz sample rate if you have first set the IF bandwidth to 300 kHz or less. 42 • Decimation and the LOLOCK state are now correctly saved and recalled within a profile. The audio interruptions are every 0,5 sec (approx), no matter mode (FM, SSB, AM), and filter setup doesn't have effect. 41 is a new ADSB plugin which simplifies the way you can use an SDRplay RSP for decoding real time transponder signals from aircraft in your vicinity. This release addresses a number of usability issues and bug fixes as well as implementing some new features. The one SDRuno comes with a full manual (pdf) and SDRplay fans and beta testers of SDRuno have also released a free SDRuno cookbook guide (pdf). ExtIO is the driver interface used by some • If decimation had been set before the 10m band was selected, the decimation value would be wrong after the band was unset. The plugin is developed as a ". SDRuno also supports the RTL-SDR. I DO see a lowering of the noise floor when I select a narrow bandwidth by decimating a large sample rate vs. hfaero Posts: 30 Joined: Tue Oct 04, 2016 8:24 pm. This gives better handling of multiple devices and is essential for the RSPduo. While useful to get an impression on a while band, less useful for looking at signals with a small SDRuno is the official software for the SDRplay RSP line of software defined radios, but the EXTio version also supports the RTL-SDR. SDRuno v1. The recording spectrum is determined by the sample rate and decimation you've selected in the Main window, it's the same as "Final SR". 1: Now supports up to 2. 22. This aims at covering all available SDR Settings for supported devices / sources. 1 which contains various new features and bug fixes for the RSP. SDRPlay Independent Community Forum › Forums › SDRUno › Decimation and dynamic range. Akos from the RTLSDR4Everyone blog has recently released two new posts. Yes it can be changed in Win 10 settings but that's not the point. Over on YouTube TechMinds has uploaded a new video explaining NavTex and showing how to decode it with an HF capable SDR like the SDRplay RSPDx. 002 by NN4F & KD2KOG RSP1A SETT – Opens the settings window MA – Maximize/Minimize all, this keeps all the windows in sync when minimizing the windows OPT – Menu, Options for the input, I/Q swap, Help File and more. These features allow users to tune filters to avoid ADC overload and to overall fine tune reception better, especially for narrowband signals. January 2, 2020 at 1:59 am #507. BARE MINIMUM PC - Dual Core Intel operating at 2 GHz. 4 MSPS for the RTL-SDR ; SDRplay Releases SDRuno: Free SDR Software for the RSP ; Over on his sdr4everyone blog author Akos has uploaded a tutorial that shows how to set up the recently released SDRUno with the RTL-SDR. Not bad at all Manual gain controls and decimation driver; ExtIO with Decimation & Tuner Bandwidth Controls; Keenerds Driver; L-Band Heat Issue Driver; Signal ID Wiki; Forum; RTL-SDR Store; Guide Book; Contact; SDRuno Updated to Version 1. I already have the Win 10 setting slowed down which much 1) I have just demonstrated yesterday with the PC screens (as also explained in the SDRplay white paper) that you can get rid of the spurious signals by using the LOW IF setting: go to the top left of the SDRuno main, click SETT. SDRuno is the official software for SDRplay RSP devices, however, they provide an ExtIO interface which allows Discussions about everything to do with SDRuno. The plugin generates an audiotone of 800 Hz The official software package of the SDRplay range of products is SDRuno and it has recently been updated to version 1. 992Mhz in sdruno until you manually correct this in uno. I DO see a lowering of the noise floor when I select a narrow bandwidth by decimating a large sample rate What I see is decimation from 2 to 16 acts like a "zoom" in the total span previously selected (2 to 10Mhz). • If decimation had been set before the 10m band was selected, the decimation value would be SDRuno can run in multiple instances, each with a different input device. I'm sure I'm doing something wrong, changed a default, inconsistent with decimation etc but I can't figure it out. I don't even know what is Decimation, but it cured the problem. I must have selected a feature that does not allow decimation. Top. My first observation is that the smallest VFO tuning step is 1 Hz, and that both Main In SDRUno, sample rate and decimation are individually configurable. the software should propose values for decimation if there is room according to me this is the "order" that make sense bye. Keypad buttons now not only take you to the specified band, but the sample rate and decimation are changed to enable “band framing” – allowing you to see all of the band within the display Though operation with an older RSP is not recommended, I've observed that using SDRUno 1. Recently we've seen some new plugins become public, and in one of their recent blog posts, SDRplay highlights a few new ones. SDRuno is the official software for the SDRplay RSP software defined radio. Virtual audio cable used RSP1a is always much worse. • Cancelling wav file open window on Many thanks to Jon Hudson with SDRplay who shares the following information about the latest release of SDRuno on the SDRplay blog: Try out the new features in SDRuno V1. 30%. PSK is less popular than about 5 to 10 decimation. Uno makes some intelligent The plugin uses the SP1 stream, provided by the SDRuno framework, a data stream with a rate of 192000. 00MHz Discussions about everything to do with SDRuno. Decimation was set to 32. The reason why this is perceived to be the case is that with SDRuno, when decimation is applied, something else happens as well and that is that the IF bandwidth of the hardware is reduced. When working with a weak satellite signasls, try decimating the signal using SDRuno’s decimation feature. I believe that the minimum sample rate of the hardware is 2M samples per second witch is huge for a software designed to use a top grade sound card limited to 192 KHz sampling but with at Definitely the Decimation and /or the SR windows disappear after a system overload. 50), it's showing a value close at: 8,831,500 ; instead of showing a value of 7. In addition they've also now increased the previous 0. 96MSPS (1 MHz) sampling rate/bandwidth limit. Prior to v1. I have no idea why it stopped the issue. SDRuno does record in a The signal to noise ratio (SNR) needed for successful decoding in these decoders will need to be greater than 7dB. Viewing 1 post (of 1 total) Author. Resetting SDRuno can’t be undone. 090 GHz and launch SDRuno User Manual Overview SDRuno is an advanced Software Defined Radio Application platform which is optimized for use with SDRplay's range of Radio Spectrum Processors. decimation) ) ; x() = input samples from rtl_tcp; y() = output samples to SDR app (HDSDR) The sum produces values requiring more than 8 bit. You'll be looking at the playback tab. Return to Also, you need to adjust your spectrum scope to show a reasonable amount of signal -- the RSPdx has about 70db (14 bits with decimation) of viable dynamic range. Then decrease only until you see the Overload stop blinking. To make them reappear quickly, - Turn SDRuno off. _,_. This is not the case with intermodulation products. 072 ppm Whats worked so far is that i cannot use RX settings -> Orig to sync LO. Low IF/SR 8. -Sigma ADCs work by starting with a very highly oversampled low resolution ADC (often only 1 bit) and then use hardware decimation filtering to deliver more resolution at a ExtIO plugin for Winrad/HDSDR connecting to librtlsdr's rtl_tcp - hayguen/extio_rtl_tcp Over on YouTube two new videos comparing the reception on the SDRplay and Airspy have been uploaded. >Also, increasing the Decimation can improve reception. Now select an RSP SR (ADC sample rate) of 2. a signal withd a width of a few 100 Hz is hard to detect, so use the zooming facility on the main SDRuno comes with a full manual (pdf) and SDRplay fans and beta testers of SDRuno have also released a free SDRuno cookbook guide (pdf). Cloudmarkers is a plugin that allows users to query the online Cloudmarkers In SDRUno, sample rate and decimation are individually configurable. The current version supports BPSK31, BPSK63, and BPSK125. Note that on a spectrum width a width of 2 MHz, the minimum of the SDRplay devices. 96 SDRUno, things I noticed today and questions Wes S. The program is described below: Why use this app? It makes it easy to slog through lots of Currently the SDRuno zoom is affected by the window size. From the MAIN panel. All settings will be cleared and all instances of SDRuno will be shut down. 536 MHz, 5 MHz, 6 MHz, 7 MHz and 8 MHz in ZIF mode and 200 The 192000 samplerate is provided by the SDRuno platform, further decimation and filtering is dome by the plugin itself. Anyway, this means that you do not have to select an inputrate and a decimation factor. It is broadcast in either the MW Starting with Windows XP, all the following work well with SDRuno: W7, W8 & W10. Cloudmarkers is a plugin that allows users to query the online Cloudmarkers database to determine what an unknown signal at the currently tuned frequency might be. g, I’ve been looking into using SDRuno to measure small carrier offsets of MW signals. W9KJO Posts: 60 Joined: Thu Oct 06, 2016 3:38 pm These are the particulars for SDRuno here; 32 decimation, low IF mode, IF Bandwidth of 200KHz, IF agc off and set to 55Db, final sample rate of 62500. according to values set for 1. 3 posts • Page 1 of 1.
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