16 сағат бұрын
16 сағат бұрын
14 күн бұрын
Пікірлер
@gordonhost7775 13 күн бұрын
Pretty cool! I was looking for this. Works perfectly
@dxerkin4 14 күн бұрын
isn't that AS?
@vladisslav2011 14 күн бұрын
Maybe a mix of tropo and AS. It is not usually received reflected from an airplane during normal conditions.
@Ayberkkorkmazz Ай бұрын
I am the owner of the radio called Oney Flash FM, which you listened to at the specified moment. I wonder where we have reached with 1 kW output power. We are broadcasting from Turkey
@vladisslav2011 Ай бұрын
Hello. I don't want to disclose my exact QTH here, so the location is somewhere close to the northern border of Belarus, small summer house outside of villages and cities. There were some mistakes in the description and title (wrong time and date) - fixed. I've found the file and processed it with Gqrx from current rds_decoder branch: kzbin.info/www/bejne/aZ-rhHlopK-efck Oney Flash FM was received and identified (thanks to good RDS subcarrier deviation) 6 times during 2023 summer. That were sporadic E propagation events, so the reception did not last too long, 2..5 munites or so.
@Anerd-s6d Ай бұрын
can i have the conf file ?thandsand thanks
@vladisslav2011 Ай бұрын
drive.google.com/file/d/1c4WFofPbTcTxt1G7irLS0QTV2xW_RQA4/view?usp=drive_link This is my latest b1i config. You may have to adjust some options.
@Anerd-s6d Ай бұрын
can you share the config.conf ,thansand thanks
@vladisslav2011 Ай бұрын
drive.google.com/file/d/1o7sX19kvUy9V4jMdYEoSPyjz-cLgbFNY/view?usp=drive_link This is my current b3i config. You may have to adjust some options.
@Anerd-s6d Ай бұрын
how can i msg you?please
@vladisslav2011 Ай бұрын
You may ask your questions here or on github (in issues). Or you may find me on discord FMDX.org server.
@Anerd-s6d Ай бұрын
I am interested in how you do that ?it is amazing
@vladisslav2011 Ай бұрын
That's just 2 HackRFs clocked from a single TCXO. It is possible to receive 3 systems using even a single HackRF. See this video kzbin.info/www/bejne/kILWY6Z8mM19bNk
@youtubeaccount931 2 ай бұрын
I just got an rx888mk2, is this special version of gqrx still the way to get the unit to work on linux? I can't find much info on running it on linux besides ka9q, I use sdr++ mostly.
@gastonmazzei8087 2 ай бұрын
Just commenting here so I get notified too. Im mostly concerned in getting the raw samples streamed over to linux tho :P thanks
@vladisslav2011 2 ай бұрын
This special version of Gqrx is not really required. The stock version of Gqrx should work well too. Just build patched ExtIO_sddc and patched gr-osmosdr from my github. Or you may try the SoapySDR driver from ik1xpv's ExtIO_sddc repository.
@gastonmazzei8087 2 ай бұрын
@@vladisslav2011 Cool, thanks. In case we want to direclty manipulate raw data from the stream using e.g. Python3... is the conversion from whatever the USB/Eth stream delivers to IQ complex samples straightforward? Thx
@IOSARBX 2 ай бұрын
Linux SDR and DXing, I really enjoyed this video, so I hit the like button!
@vladisslav2011 2 ай бұрын
Zero likes, so you did not hit the like button hard enough :-)
@sososamar9690 2 ай бұрын
Is there a GPS Spoofing that is mobile for a specific area so that you broadcast satellites broadcasting a map of a specific size, not like spoofing a fixed GPS for just one place?
@vladisslav2011 2 ай бұрын
Yes. It is possible to emulate reception from a moving vehicle.
@sososamar9690 2 ай бұрын
@@vladisslav2011 How is the method?
@jorobyne1497 5 ай бұрын
This is great! Is there any way I can install your build of GQRX on my Mac?
@vladisslav2011 5 ай бұрын
You may install a dmg from my github repository, but I don't think, that it would work well due to github.com/gnuradio/gnuradio/issues/6105 It may be better to patch GNU Radio to fix #6105 and maybe #6110, build and install it, then build and install rds_decoder branch from source...
@danedewaard8215 5 ай бұрын
Do these spurs show up in the SDRplay devises, as they also use the MSi-001 and MSi-2500 chips???
@vladisslav2011 5 ай бұрын
I don't have genuine SDRPlay devices, so don't know. These spurs are most likely caused by PGA self oscillating at high gain reduction levels or MSi001 internal LDO instability. I've tried to add extra bypass capacitors, but it did not help.
@danedewaard8215 6 ай бұрын
I recently bought two of these devices and both exhibit this same behavior to different degrees! I was wondering why the spurs move around with changes to the gain control settings. What do you think causes this: overload, poor mixer stability, or poorly designed ADC??? My units are the Blue Dolphin MSi-SDRs and seem to have +/- 2.5 ppm XOs installed instead of 0.5 TCXO but they are extremely sensitive. I decided I can live with the frequency instability and the spurs! It seems there is NO perfect SDR for an affordable price!!! Thanks for the videos!!!
@danedewaard8215 7 ай бұрын
Hello! Just wondering if you installed a TCXO because the Purple MSI SDR does not have a temperature controlled crystal oscillator, even though it says it does?????
@vladisslav2011 7 ай бұрын
My variant of "purple PCB MSI SDR" had generic 20ppm crystal and wrong load capacitors, so I had to change it to a TCXO to improve LO frequency accuracy and stability.
@danedewaard8215 7 ай бұрын
@@vladisslav2011 WOW, 20 ppm is pretty bad! Good thing you have the skill to solder in the new one! I just purchased two MSI-SDR Blue Dolphin dongles and both crystal oscillators were not 0.5 ppm temperature controlled as was marked on the case!!!!
@danedewaard8215 6 ай бұрын
@@vladisslav2011 How did you know your XO was 20 ppm? I'm wondering how I can see what mine is. Is it the number on the oscillator or did you test it? Thanks!
@vladisslav2011 6 ай бұрын
@@danedewaard8215 I've just read the crystal marking... The real measured offset was ~17ppm on VHF/UHF and twice as much on HF. I've used HF time station (this video), GNNS satellites transmissions and 0.1ppm TCXO fundamental and overtones as reference signals.
@GeoffereyEakinsTech 8 ай бұрын
How are you doing this in GQRX, a plugin?
@vladisslav2011 8 ай бұрын
Gqrx does not support plugins. I've just forked it and made some changes.
9 ай бұрын
This NEEDS to be merged! Nice work!
@vladisslav2011 8 ай бұрын
It's highly unlikely to be merged because it does not play well (performance degradation) with recent plotter changes and it depends on other heavy changes that are unlikely to be merged too: multi-vfo, IQ Tool formats and so on. You may try to cherry-pick some commits from this branch github.com/vladisslav2011/gqrx/commits/fft_channelizer/ or try to rebase it on top of current master...
@JonAhlquist 10 ай бұрын
This is a demonstration of an RX-888 MKII (see video description of kzbin.info/www/bejne/r5e2nn2of86snLc ) and a "purple" rsp1 clone (kzbin.info/www/bejne/q4uke5R_Z8dmp9E ) operating at HF and MW frequencies. SMPS interference is Switched Mode Power Supply interference: kzbin.info/www/bejne/f4XHnKSBnZinja8 There is no back-and-forth comparison of the two receivers receiving the same station, so it is not easy to determine which receiver is better. We do not know where the receivers are located and we do not know where the transmissions originate, so we cannot comment on DX reception, but we can say that both receivers can receive many signals on both HF and MW. RX888 MKII 0:00 40m SSB "purple" rsp1 clone 7:32 40m SSB 12:04 80m SSB 12:57 30m SSB 15:15 20m SSB 19:02 17m SSB 20:43 15m SSB 21:38 29 MHz, 5 MHz, 2.8-2.9 MHz 23:17 Medium wave 24:31 31m SW broadcast band 25:30 40m SSB RX-888 MKII 27:43 40m SSB 29:50 Medium wave 31:07 80 SSB 34:35 30m CW 40:42 30m SSB 42:45 Medium wave 42:48 Reception on 1.665 MHz (The European broadcast band ends at 1.602 MHz.) 43:54 Reception on 3.1504 MHz
@usmankhan-xi4dl Жыл бұрын
Where are you located?
@vladisslav2011 Жыл бұрын
I don't want to disclose my exact QTH on youtube. But the approximate QTH may be easily guessed from my FM DXing videos...
@buiminhtu9796 Жыл бұрын
Can you give me the config file, please?
@vladisslav2011 Жыл бұрын
github.com/gnss-sdr/gnss-sdr/pull/697/commits/476e1d28019e339d60fde382ebec59020e410916
@Anerd-s6d Ай бұрын
@@vladisslav2011 how can i msg you?please
@dxerkin4 Жыл бұрын
if possible, you should consider putting the dipole on the roof, if these are the results with the dipole in the attic, imagine on the roof.
@ShahZahidKhan Жыл бұрын
Hello. I am a newbie. Thankfully I was able to implement it. Could you please mention if we could just receive and save the raw data for later processing? Much Appreciated.
@vladisslav2011 Жыл бұрын
Yes. I'm using Gqrx "IQ tool" to capture RAW IQ files for later processing. hackrf_transfer/rtl-sdr console tools should work too.
@_orias_ Жыл бұрын
can u share me your conf file ? ty
@vladisslav2011 Жыл бұрын
Yes. Config: github.com/vladisslav2011/gnss-sdr/blob/fake_multichannel/conf/gnss-sdr_multichannel_GPS_Galileo_Beidou_Glonass_L1_USRP_realtime.conf PR: github.com/gnss-sdr/gnss-sdr/pull/697
@_orias_ Жыл бұрын
@@vladisslav2011 thanks you so much
@MarkPentler Жыл бұрын
Just picked one up - runs like a dream at HF, totally dead at GHz sadly. They're worth the money!
@vladisslav2011 Жыл бұрын
No more space left in the decription... 2023.04.09 13:50:52UTC MS, Finland 00:08:36 88.2==88.9==89.0==89.5==90.7==91.9==93.2 YLE Radio Yksi 00:08:42 88.5==89.3==89.4==92.9==93.8 SR P1 Sweden (e201) 00:09:37 89.6==91.0==92.3==93.7==94.0==94.6==95.5 YLEX 00:10:15 91.2==92.1==94.5==94.9==95.4==96.3 SR P2 (e402) 00:11:07 93.1==94.2==96.6==96.9==97.2==97.6==97.9==99.9 YLE Radio Suomi 00:12:01 95.2==97.3==98.6==99.7 YLE X3M 00:12:20 95.8==97.1==98.7==99.0==99.4==100.0 SR P3 (e203) 00:12:45 97.5 YLE Puhe 00:13:52 100.6 YLE Vega 00:13:56 101.1 00:14:06 102.0 00:14:11 102.9 00:14:21 104.7 00:14:24 105.4 00:14:29 106.4 00:14:32 106.5
@ПтичкА-с6ш Жыл бұрын
Ну и как показал себя этот приёмник за год? На УКВ как работает?
@vladisslav2011 Жыл бұрын
Работает. На КВ достаточно неплох. На УКВ сильно хуже USRP и по шуму, и по полосе, и по энергопотреблению. 16 бит он не выдает, но в моих условиях хватает 10 бит для записи в IQ как КВ, так и УКВ.
@user-PetyaPupkin Жыл бұрын
А что за софт используете для данного приёмника?
@vladisslav2011 Жыл бұрын
@@user-PetyaPupkin Так все написано в описании видео. Gqrx, gr-osmosdr, Extio_sddc.
@pmpmaharana97 Жыл бұрын
i am not able to configure it in my gqrs, not able to install it Libmirisdr-4
@vladisslav2011 Жыл бұрын
Libmirisdr-4 compilation: git clone github.com/vladisslav2011/libmirisdr-4 cd libmirisdr-4 git checkout bandwidth_and_stability mkdir build && cd build cmake .. make -j Gr-osmosdr compilation: git clone github.com/vladisslav2011/gr-osmosdr cd gr-osmosdr git checkout miri_master mkdir build && cd build cmake -DLIBMIRISDR_INCLUDE_DIRS:PATH=<your base dir>/libmirisdr-4/include -DLIBMIRISDR_LIBRARIES:FILEPATH=<your base dir>/libmirisdr-4/build/src/libmirisdr.so .. make -j Which step fails?
@vladisslav2011 Жыл бұрын
2023-03-18 16:31:22UTC MS 02:29:33 88.6 YLE Radio Yksi Tervola FM Törmävaara 02:30:09 89.0 YLE Radio Yksi Haapavesi FM Haapovuori-Mastontie 91.1 YleX Pihtipudas FM Ilosvuori-Viitasaarentie 02:30:26 91.3 02:30:35 92.2 YLE Radio Yksi Kolari FM Ylläs-Tunturintie 84 02:30:43 92.6 YleX Tervola FM Törmävaara 02:30:57 92.8 02:31:02 93.0 02:31:07 93.2 YleX Oulu - Uleåborg FM Kiiminki-Isohalme, Radiotie 02:31:17 93.9 02:31:22 94.0 YleX Rovaniemi FM Vennivaara-Vennivarantie 02:31:28 94.1 YLE Radio Yksi Enontekiö FM Kuttanen-Käsivarrentie 2143 02:31:42 95.3 YleX Kolari FM Ylläs-Tunturintie 84 02:31:50 95.6 YLE Radio Suomi Tervola FM Törmävaara 02:32:00 95.9 02:32:04 96.1 YleX Haapavesi FM Haapovuori-Mastontie 02:32:14 96.4 02:32:20 97.0 YLE Radio Suomi Pihtipudas FM Ilosvuori-Viitasaarentie 02:32:26 97.2 YleX Enontekiö FM Kuttanen-Käsivarrentie 2143 02:32:33 97.3 YLE Radio Suomi Oulu - Uleåborg FM Kiiminki-Isohalme, Radiotie 02:32:40 97.9 02:32:47 98.1 YLE Radio Suomi Kolari FM Ylläs-Tunturintie 84 02:32:53 98.4 YLE Radio Suomi Haapavesi FM Haapovuori-Mastontie 02:33:01 99.6 YLE Radio Suomi Enontekiö FM Kuttanen-Käsivarrentie 2143 02:33:10 100.2 02:33:19 100.7 02:33:39 107.5
@vladisslav2011 Жыл бұрын
2023-03-18 14:18:55UTC MS 01:16:09 88.9 YLE Radio Yksi Kristiinankaupunki-Kristinestad FM Lapväärtti-Pyhävuo 01:16:30 89.3 SR P1 Sollefteå FM Multrå-Flugtjärnshöjden 01:17:00 90.7 YLE Radio Yksi Tampere - Tammerfors FM Teisko 01:17:11 90.6 SR P1 Sveg FM Härjedalen 01:17:27 91.0 YLEX Kristiinankaupunki-Kristinestad FM Lapväärtti-Pyhävuo 01:17:41 91.7 SR P2 Bollnäs FM Arbrå-Kyrkberget 01:17:45 92.0 01:17:53 92.1 01:18:15 92.7 SR P1 Sundsvall FM Södra Stadsberget 01:18:37 93.2 SR P1 Ånge FM Alby-Snöberg 93.7 YLEX Tampere - Tammerfors FM Teisko 01:19:00 94.2 YLE Radio Suomi Kristiinankaupunki-Kristinestad FM Lapväärtti-Pyhävuo 01:17:41 91.7 SR P2 Bollnäs FM Arbrå-Kyrkberget 01:19:18 94.5 SR P4 Ånge FM Alby-Snöberg 01:19:37 94.8 01:19:55 94.9 SR P2 Sveg FM Härjedalen 01:20:19 95.6 SR P2 Ånge FM Alby-Snöberg 01:20:37 96.0 SR P3 Bollnäs FM Arbrå-Kyrkberget 01:21:00 96.9 SR P2 Sundsvall FM Södra Stadsberget 01:21:25 97.7 01:21:48 97.9 SR P3 Sveg FM Härjedalen 01:22:24 98.1 SR P3 Sollefteå FM Multrå-Flugtjärnshöjden 01:22:45 98.6 YLE X3M Kristiinankaupunki-Kristinestad FM Lapväärtti-Pyhävuo ? 01:23:08 98.7 01:23:23 99.2 SR P3 Sundsvall FM Södra Stadsberget 01:23:45 99.6 SR P3 Ånge FM Alby-Snöberg 01:24:06 99.9 YLE Radio Suomi Tampere - Tammerfors FM Teisko 01:24:24 102.8 SR P4 (Västernorrland) Sundsvall FM Södra Stadsberget 01:24:45 103.0 01:25:04 103.2 01:25:18 104.7 Radio Nova Tampere - Tammerfors FM Teisko 01:25:34 107.2 01:25:46 107.6 Radio Nova Kristiinankaupunki-Kristinestad FM Lapväärtti-Pyhävuo
Жыл бұрын
I'm sorry, which one performs the best in your opinion? From your video, it seems like the HackRF has the best SNR.
@vladisslav2011 Жыл бұрын
None of all these. USRP B210 with a bandpass filter.
@johnvijver3815 Жыл бұрын
Wich active dipole your using? is it DIY?
@vladisslav2011 Жыл бұрын
Yes. It's just a piece of wire, cut into two and connected to a differential amplifier. No filters/matching networks. That "antenna" is placed in the attic under a metal roof. Works surprisingly well though.
@johnvijver3815 Жыл бұрын
@@vladisslav2011 With Fets? or CMOS? do you have a schematic?
@vladisslav2011 Жыл бұрын
@@johnvijver3815 2 BJTs + balun. I have not written a schematic as it's trivial. I just have soldered 2 BJTs in common emitter differential stage configuration, bias network, balun (DIY too, on a small ferrite ring) and a SMA-F connector to a piece of prototyping PCB and it works.
@rolandsstrautmalis2412 Жыл бұрын
Вы не различаете спорадическое прохождение от тропосферного, да и трудно понять, почему не можете самостоятельно ничего идентифицировать. Там много совсем ясных признаков идентификации (и даже названия станций в эфире) тропо из Эстонии, Латвии, Финляндии и России. Такой труд, такой объём... Смысла что-то не видно, разве что понятно, где это принято. Минус один от меня.
@vladisslav2011 Жыл бұрын
Тропо, по идее, быть тут не должно. Пытаться что-то идентифицировать я пока что даже не пытался - времени хватило только метки расставить. Позже, как время найдется, пройдусь по файлу еще раз и расставлю названия станций и города вещания. Может быть не надо было открывать, пока не закончил... А минус и плюс здесь одно и то же.
@tomaszkrkow9717 Жыл бұрын
Hi great content! Mine has bunch of noise due to local interference. BTW why did you remove LNA? Is it due to noise? And how can I add bias tee?
@vladisslav2011 Жыл бұрын
The LNA has too much gain (23db). It overloads and makes strong products... Bias tee: drive.google.com/file/d/1SVxowlhcT0yNWOBiwcmdGjUba71uxO2r/view?usp=sharing
@man9146 Жыл бұрын
Прикольно ! Как помехи на аналоговом ТВ
@MegaLord39 Жыл бұрын
Очень круто, а возможно настроить чтобы записывала не весь водопад, а только нужных частот одновременно ?
@vladisslav2011 Жыл бұрын
Можно конечно. Но, так как заранее неизвестно, на каких частотах будет прохождение, да и хочется посмотреть, как меняются уровни в процессе, так не делаю.
@MegaLord39 Жыл бұрын
@@vladisslav2011 Если честно не совсем понял как это реализовать
@vladisslav2011 Жыл бұрын
@@MegaLord39 Ставите демодуляторы на нужные частоты, настраиваете полосу, squelch, параметры записи по squelch, перезапускаете DSP, ничего не трогаете, чтобы не поймать баги GNU Radio, ждете... Все, что прошло через фильтр squelch triggered recorder, пишется в WAV файлы. Gqrx нужно собирать из ветки fft_channelizer (выше производительность и есть новые фичи и баги) или multi_vfo (меньше производительность, но возможно стабильнее)
@yvesbarbin97 Жыл бұрын
on my SDR-RSP1 , I find that IQ balance is not at best, as image frequency is -30dB. Could this be corrected by software?
@vladisslav2011 Жыл бұрын
It may be hardware or software issue. If you have some chinese clone, check I and Q traces from MSi001 to MSi2500 for resistors and capacitors - if there are any, remove capacitors and replace resistors with jumpers. Try installing gr-iqbal, building gr-osmosdr with iq balance support and enabling corresponding checkbox in Gqrx - it may help in some cases, but not in case of incorrectly designed hardware.
@yvesbarbin97 Жыл бұрын
@@vladisslav2011 Thank you very much, I shall inquire in both suggested directions. Globally, I found out that this SDR cheap receiver is very noisy. (auto-noise) The available dynamics is much less than the one with the standard RTL-SDR. There are of course different
@diogobatista8974 Жыл бұрын
Hi, I’m new to the GNSS world. In this video you are usin GNSS SDR open source? Can you tell me where to find tutorials about the GNSS SDR open source?
@vladisslav2011 Жыл бұрын
Yes. GNSS-SDR with some patches. Tutorials can be found here: gnss-sdr.org/
@ParamDxer Жыл бұрын
Interesting separate MS encounters my friend :) Hope to set up a Yagi with the RTL SDR in the future to record and analyse both MS catches and even SpE during its season. Thanks for sharing 73!
@mustafaefecetin Жыл бұрын
What clock source did you use?
@vladisslav2011 Жыл бұрын
Generic chinese "0.1ppm" TCXO
@oleggusev991 Жыл бұрын
Отличная работа!
@radiohobby7601 Жыл бұрын
Антенна у вас на сатком не очень хорошая. Дискоконус?
@vladisslav2011 Жыл бұрын
В описании видео написано, что антенна 5 элементов винтовая уда-яги (с петлевым вибратором для широкополосности). Антенна установлена в помещении, спутники перекрыты соседским домом, кустами и частично рельефом местности. Довольно сильные помехи от компьютера и импульсных БП. Helix 10 витков работает, кстати, хуже.
@jokernature Жыл бұрын
Accuracy m.?
@vladisslav2011 Жыл бұрын
As PPP_Static mode does not work well, the accuracy is not very good. ~10m, I think. Adding Glonass to the GPS+Galileo+BeiDou receiver degrades accuracy, but improves availability.
@TheGmr140 Жыл бұрын
i saw your waterfall plot at the start of video, looks like strong tv or fm, for 80m, get a 5Mhz low pass filter, cheap ones on ebay. the rx-888 has not a great lpf, in front of it's adc, thus alias signals. it worked for me , 73s
@man9146 Жыл бұрын
Здравствуйте ! Пытаюсь "завести" свой msi sdr на fedora 37 посоветуйте пожалуйста с чего начать ? ранее удавалось заставить работать msi sdr и gqrx , помоему на manjaro было очень нестабильно, а сейчас увидев Ваше видео появилась надежда.
@man9146 Жыл бұрын
почему то не ставится API 3.07 с сайта sdrplay. На минт ставилось нормально и на других дебианоподобных, а в феде только лицензионное соглашение даёт почитать при запуске скрипта run. А без api3.07 gr-osmosdr нехочет компилироваться. libmirisdr-4 без проблем прошло а gqrx при компиляции, после команды make-j на 98%-м проценте подвисает комп наглухо. Попробовал ещё на одном пк с федорой, аналогично.
@vladisslav2011 Жыл бұрын
@@man9146 You may try this branch github.com/vladisslav2011/gr-osmosdr/tree/miri_master from my gr-osmosdr fork. Попробуйте эту ветку.
@man9146 Жыл бұрын
@@vladisslav2011 спасибо за ответ! Я сам радиолюбитель и любитель приёма дальних вещалок на фм через тропо-спорадики , а также увлекаюсь линуксом . Мне нравится простота gqrx , а MSI-SDR ввиду своей бюджетности и функционала (полоса приёма 10 мгц) стал хорошим инструментом для fmdxing-а. Попробую установить по вашей ссылке. 73!
@man9146 Жыл бұрын
gr-osmosdr с вашей ветки установился без проблем на чистую LM21 xfce , подскажите пожалуйста что далее? установил gqrx через apt install , и он не видит msi sdr попробовал установить gqrx с вашей ветки - там ошибка на 98% после make я к сожалению не совсем понимаю последовательность установки всей процедуры с нуля чтоб запустить msi sdr на gqrx поэтому возникают сложности
@man9146 Жыл бұрын
попробовал установить незапуская xorg (ctrl alt f1) и получилось скомпилить форк gqrx но пока всё же не видит msi
@elzzon Жыл бұрын
Seems quite good! One question... what kind of antenna was this tested with? Curious how good the receive circuit really is with weak signals,
@vladisslav2011 Жыл бұрын
Small ~5m active dipole, placed in the attic under the metal roof. The amplifier is powerd from the bias-tee.
@orbisaustralis7608 Жыл бұрын
Thats an uplink sweep , its a technique for locating the input of a transponder , lets say you wanna get into the transponder but you dont know the uplink frequency , what you do is sweep it with a signal generator hooked to a PA , then while sweeping it you look for this on your SDR or spectrum analyzer, what you see sweeping and making diagonal lines is the signal gen sweeping a range , then you have the manual confirmation when you see the one that unstable That looks like Alphasat on 24E .. im i correct ?
@vladisslav2011 Жыл бұрын
I don't think so. The oscillations are too random and chaotic. It looks like some another malfunctioning satellite is emitting the signal, that is hitting this tranponder's upplink.
@SunnnSety Жыл бұрын
В какой позиции?
@vladisslav2011 Жыл бұрын
Somewhere above india, I think. The GPS antenna does not have norrow enough main lobe to guess the exact position...
@Digi4u Жыл бұрын
Wow very nice ! Is this going to be in one of the next builds ?
@vladisslav2011 Жыл бұрын
I don't think so. It requires some more work both on code and on GUI integration.
@aerialshells Жыл бұрын
does Extio_sddc after compilling should be copied somewhere? I got " gqrx exited with an exception: Alpha must be in [0, 1]" message
@vladisslav2011 Жыл бұрын
It may be left in a build path. gr-osmosdr includes build-time library location into search path. This exception is not related to Extio_sddc. Some IIR filter is configured incorrectly. Have you tried running Gqrx with a clean config? (gqrx -r)
@aerialshells Жыл бұрын
@@vladisslav2011 how can I contact you regarding compilling ExtIO linux_fixes branch and gr-osmosdr ngrx branch? I succesfully compiled master branches but it doean't work.
@vladisslav2011 Жыл бұрын
@@aerialshells sudo apt install gcc-arm-none-eabi git clone github.com/vladisslav2011/ExtIO_sddc cd ExtIO_sddc mkdir build cd build git checkout linux_fixes cmake .. make -j10 cd git clone github.com/vladisslav2011/gr-osmosdr cd gr-osmosdr mkdir build cd build git checkout ngrx_master cmake .. -DENABLE_NGRX=ON -DLIBSDDC_INCLUDE_DIRS=~/ExtIO_sddc/libsddc -DLIBSDDC_LIBRARIES=~/ExtIO_sddc/build/libsddc/libsddc.so make -j10 LD_PRELOAD=~/gr-osmosdr/build/lib/libgnuradio-osmosdr.so gqrx
@aerialshells Жыл бұрын
@@vladisslav2011 Ubuntu Jammy, installed gcc-arm-none-eabi I got: arm-none-eabi-ld: obj/RunApplication.o:/home/maro/SDR/vladisslav2011/ExtIO_sddc/SDDC_FX3/RunApplication.c:36: multiple definition of `Qevent'; obj/DebugConsole.o:/home/maro/SDR/vladisslav2011/ExtIO_sddc/SDDC_FX3/DebugConsole.c:36: first defined here arm-none-eabi-ld: obj/StartStopApplication.o:/home/maro/SDR/vladisslav2011/ExtIO_sddc/SDDC_FX3/StartStopApplication.c:16: multiple definition of `Qevent'; obj/DebugConsole.o:/home/maro/SDR/vladisslav2011/ExtIO_sddc/SDDC_FX3/DebugConsole.c:36: first defined here arm-none-eabi-ld: obj/USBhandler.o:/home/maro/SDR/vladisslav2011/ExtIO_sddc/SDDC_FX3/USBhandler.c:66: multiple definition of `Qevent'; obj/DebugConsole.o:/home/maro/SDR/vladisslav2011/ExtIO_sddc/SDDC_FX3/DebugConsole.c:36: first defined here [ 63%] No build step for 'LIBCPPUNIT' arm-none-eabi-ld: cannot find /usr/lib/arm-none-eabi/lib/libc.a: No such file or directory arm-none-eabi-ld: cannot find /usr/lib/gcc/arm-none-eabi/0.3.1/libgcc.a: No such file or directory make[3]: *** [makefile:76: SDDC_FX3.elf] Error 1 make[2]: *** [libsddc/CMakeFiles/sddc.dir/build.make:74: ../SDDC_FX3/SDDC_FX3.h] Error 2 make[1]: *** [CMakeFiles/Makefile2:923: libsddc/CMakeFiles/sddc.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... [ 65%] No install step for 'LIBCPPUNIT' [ 67%] Completed 'LIBCPPUNIT' [ 71%] Built target LIBCPPUNIT make: *** [Makefile:101: all] Error 2
@vladisslav2011 Жыл бұрын
@@aerialshells I've updated linux_fixes branch. It should build under Ubuntu 22.04 now. Use the following command to fix "libgcc.a Not found" error: sudo ln -s /usr/lib/gcc/arm-none-eabi/10.3.1 /usr/lib/gcc/arm-none-eabi/0.3.1
@ericaviation Жыл бұрын
I'm stuck at campiling the patched osmosdr. I'm getting the GnuRadio Runtime required error. Are there any updates? Has anyone successfully patched osmosdr for gnuradio 3.10?
@vladisslav2011 Жыл бұрын
OK. I'll try to rebase these changes on top of master for one more time. Maybe tomorrow... GNU Radio 3.10 is too buggy. It keeps dropping tags and samples, so testing under it is problematic. I'm still using 3.7 as most of it's bugs are known and it works very well with some workarounds.
@vladisslav2011 Жыл бұрын
I've rebased my changes on top of current gr-osmosdr master: github.com/vladisslav2011/gr-osmosdr/tree/ngrx_master Tested under Ubuntu 20.04
@ericaviation Жыл бұрын
@@vladisslav2011 Nice, I will give it a try when I have time.
@abradoxdxing Жыл бұрын
89.6 RAI 1