Ref: RDS - 微嵌 - KnowledgeBase

RDS - Radio Data System

RDS是英国BBC广播公司开发的一种特殊的无线电广播，称“无线数据广播系统”(Radio Data System)，它是在调频广播发射信号中利用副载波把电台名称、节目类型、节目内容及其它信息以数字形式发送出去。通过具有RDS功能的调谐器就可以识别这些数字信号，变成字符显示在显示屏上。在收到节目的同时，通过RDS可知道接收到的是那个电台，它的发射频率，并给出该电台其余的频率，由此再使用“切换频率”钮来保证所接收的信号为最强的频率。RDS无线数据广播文件可显示接收到的节目名称及其它资料。RDS功能可按节目类型决定取舍，寻找到符合你要求的电台。RDS还能用来自动控制接收机，使流动工作的汽车收音机一直保持最佳接收状态，及时收到紧急交通报告，有利交通安全。 RDS除使收音机自动化、高档化外，并在城市交通管理中发挥作用，其使用领域尚在拓展中。

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References: [ RDS: 90 ]

Total 90 documents matching your query.

1. [Discuss-gnuradio] RDS decoder with graphuical interface (score: 45): Date: Mon, 29 Jan 2007 16:55:21 +0100 (CET); Hello everyone, I have just finished testing with good results a new implementation of RDS decoding. This work is based on the rds block published on the list some time ago from Ronnie Gaensli, and l; /archive/html/discuss-gnuradio/2007-01/msg00375.html (5,654 bytes)
2. Re: [Discuss-gnuradio] about RDS and FM transmission (score: 43): Date: Thu, 10 Sep 2009 10:55:04 -0700 (PDT); Thanks Dimitris! I'll run your code w/ my USRP, but I don't have enough knowledge to fix it. Please let me known when you finish the transmit path - I think there is no free radio in Brazil doing RDS; /archive/html/discuss-gnuradio/2009-09/msg00134.html (6,492 bytes)
3. Re: [Discuss-gnuradio] about RDS and FM transmission (score: 42): Date: Thu, 10 Sep 2009 11:28:12 +0200; Hi Rafael, I'm the current developer of GR-RDS. The RDS signal has to be mixed with the mono, pilot tone and stereo signals BEFORE fm modulation. Also, be aware that the transmit path is not working; /archive/html/discuss-gnuradio/2009-09/msg00130.html (5,787 bytes)
4. [Discuss-gnuradio] making gr-rds-new work in latest versions of Ubuntu (score: 42): Date: Wed, 24 Sep 2008 12:27:37 +0200; The gr-rds-new processing block, as it is here: http://digilander.libero.it/iz2eeq/#rds does not compile under Ubuntu 8.04. The error is: /usr/local/bin/swig -c++ -python -I/usr/include/python2.5 -I/; /archive/html/discuss-gnuradio/2008-09/msg00403.html (5,906 bytes)
5. Re: [Discuss-gnuradio] RDS (score: 42): Date: Mon, 9 Oct 2006 17:19:29 +0200; Yes...please post your code. I would like to take a look as well.... I have tried to adapt the code myself, however my skills in c++ and python are limited and I have not succeeded yet..... greetings; /archive/html/discuss-gnuradio/2006-10/msg00081.html (11,337 bytes)
6. Re: [Discuss-gnuradio] RDS (score: 42): Date: Sun, 08 Oct 2006 21:38:50 -0700; Posting your code, even if still a work in progress would be useful. I'd like to take a look. Matt; /archive/html/discuss-gnuradio/2006-10/msg00077.html (9,681 bytes)
7. RE: [Discuss-gnuradio] RDS (score: 41): Date: Wed, 11 Oct 2006 09:56:32 -0500; Here is how I updated your code to the current environment. Ryan Shoff --Original Message-- From: address@hidden [mailto:address@hidden On Behalf Of Ronnie Gaensli Sent: Tuesday, October 10, 2006 5:0; /archive/html/discuss-gnuradio/2006-10/msg00119.html (6,094 bytes)
8. [Discuss-gnuradio] about RDS and FM transmission (score: 40): Date: Wed, 9 Sep 2009 11:57:13 -0700 (PDT); Hi people, I'm a volunteer of a free radio here in my city (Campinas), and looking at CGRAN I found a RDS receiver/transmiter: https://www.cgran.org/wiki/RDS Can I modulate only the RDS data using th; /archive/html/discuss-gnuradio/2009-09/msg00122.html (4,190 bytes)
9. [Discuss-gnuradio] DAB, RDS, DRM, HDradio and OFDM (score: 40): Date: Mon, 04 Jun 2007 01:46:42 +0200; Hi all, Is anybody working on DAB, RDS,DRM, HDradio or OFDM at the moment. I will probably be working on all of these in the near future and was wondering what the status is of these and where to fin; /archive/html/discuss-gnuradio/2007-06/msg00009.html (4,748 bytes)
10. Re: [Discuss-gnuradio] RDS (score: 40): Date: Fri, 06 Oct 2006 00:27:38 -0700; Great pointer! Here is the posting: http://www.archivum.info/address@hidden/2006-02/msg00018.html This would be great to build on. Cheers, Jan Matt Ettus wrote: I seem to recall someone writing a gr-; /archive/html/discuss-gnuradio/2006-10/msg00063.html (7,733 bytes)
11. Re: [Discuss-gnuradio] RDS (score: 40): Date: Thu, 05 Oct 2006 12:13:54 -0700; I seem to recall someone writing a gr-rds module a while ago. You might check the mailing list archives. I would love to have this feature in gnuradio. Please let me know if you need any help. Matt; /archive/html/discuss-gnuradio/2006-10/msg00050.html (6,856 bytes)
12. [Discuss-gnuradio] upgrade the rds code to work on 3.1.2 (score: 39): Date: Wed, 20 Aug 2008 10:45:45 +0200; This is my first message to the lis.I have GnuRadio 3.1.2 running on Ubuntu. I have downloaded the RDS code from here: http://digilander.libero.it/iz2eeq/#rds The code does not work with 3.1.2, I hav; /archive/html/discuss-gnuradio/2008-08/msg00221.html (4,387 bytes)
13. Re: [Discuss-gnuradio] RDS fun and hello from a new user (score: 39): Date: Mon, 04 Dec 2006 23:22:41 -0500; Hello, The specification gives some suggestions about loss of sync. I just count up to 20 errors in a row then resync. I want to implement error correction. I came across some example code for RDS wh; /archive/html/discuss-gnuradio/2006-12/msg00060.html (6,755 bytes)
14. Re: [Discuss-gnuradio] RDS (score: 39): Date: Thu, 05 Oct 2006 00:43:32 -0700; Hi Erlend, I think you should be able to see the subcarrier with the USRP. The injection level of the RDS signal is typically around 1.5 to 2%, this is substantially less than the pilot, which is typ; /archive/html/discuss-gnuradio/2006-10/msg00043.html (6,008 bytes)
15. [Discuss-gnuradio] RDS... some starting material (score: 39): Date: Tue, 14 Feb 2006 07:21:58 +0100; It's a pitty: I did some gnuradio/rds stuff as a semester thesis, and never ever put that stuff on the internet. Well maybe because I thought that I could improve the code, but as I don't got a gnur; /archive/html/discuss-gnuradio/2006-02/msg00069.html (4,709 bytes)
16. Re: [Discuss-gnuradio] rds on cgran (score: 38): Date: Mon, 20 Oct 2008 16:11:27 +0300; Dimitris Symeonidis wrote: I have uploaded the latest version of my RDS code on cgran: https://www.cgran.org/wiki/RDS i thought you might be interested feel free to send me any suggestions/bug report; /archive/html/discuss-gnuradio/2008-10/msg00330.html (4,983 bytes)
17. [Discuss-gnuradio] rds on cgran (score: 38): Date: Mon, 20 Oct 2008 14:09:02 +0200; I have uploaded the latest version of my RDS code on cgran: i thought you might be interested feel free to send me any suggestions/bug reports Dimitris Symeonidis "If you think you're too small to ma; /archive/html/discuss-gnuradio/2008-10/msg00329.html (4,229 bytes)
18. [Discuss-gnuradio] RDS fun and hello from a new user (score: 37): Date: Sun, 03 Dec 2006 23:15:35 -0500; Months ago I bought a USRP. Nice piece of Hardware but I did not really dive into GNURadio until this weekend. Still learning about it. I am also busy maintaining software that decodes Trunked Radio; /archive/html/discuss-gnuradio/2006-12/msg00039.html (5,421 bytes)
19. Re: [Discuss-gnuradio] RDS (score: 37): Date: Thu, 05 Oct 2006 12:12:41 -0700; I see the RDS subcarrier all the time. Not every station uses it, so you are listening to one that does. Matt; /archive/html/discuss-gnuradio/2006-10/msg00049.html (4,927 bytes)
20. Re: [Discuss-gnuradio] RDS fun and hello from a new user (score: 36): Date: Tue, 5 Dec 2006 00:31:57 +0100; Hello Eric, I am basically doing the same you did on the RDS code and specification; right now I have introduced syndrome based sync and indeed it looks like it get synced much faster. I am using the; /archive/html/discuss-gnuradio/2006-12/msg00051.html (4,777 bytes)
21. Re: [Discuss-gnuradio] RDS blocks (score: 36): Date: Tue, 21 Nov 2006 08:02:53 -0700 (MST); Here is a link to the full RDS stanard. ftp://ftp.rds.org.uk/pub/acrobat/rbds1998.pdf Hopefully that is the system you are trying to decode.; /archive/html/discuss-gnuradio/2006-11/msg00334.html (5,965 bytes)
22. Re: [Discuss-gnuradio] RDS / TMC / DAB / DVB-S/T ? (score: 36): Date: Sat, 14 Oct 2006 06:49:03 -0700; Not currently, though definitely possible. There was some code written a while ago that started to demod RDS. However, we have yet to receive the appropriate copyright assignment from the authors and; /archive/html/discuss-gnuradio/2006-10/msg00156.html (7,276 bytes)
23. [Discuss-gnuradio] RDS (score: 36): Date: Wed, 4 Oct 2006 18:11:41 +0200; I am trying to extend the usrp_wfm_rcv_pll.py by reading the RDS subcarrier, however I have a problem observing the subcarrier at all. I have connected a file_sink to the fm_demod in order to see th; /archive/html/discuss-gnuradio/2006-10/msg00038.html (4,272 bytes)
24. Re: [Discuss-gnuradio] RDS blocks (score: 35): Date: Tue, 21 Nov 2006 16:09:55 +0100; 2006/11/21, Matteo Campanella <address@hidden>: Also, is there anyone aware of any reference with detailed information on the error correction bits at the end of the blocks and how to use them? I hav; /archive/html/discuss-gnuradio/2006-11/msg00336.html (5,536 bytes)
25. [Discuss-gnuradio] RDS blocks (score: 35): Date: Tue, 21 Nov 2006 15:54:06 +0100 (CET); Hello, I've started playing around with the RDS blocks and examples, but I found that the blocks do not compile as taken from the tgz that was posted on the list some time ago. In order to make them; /archive/html/discuss-gnuradio/2006-11/msg00333.html (5,235 bytes)
26. Re: [Discuss-gnuradio] DAB, RDS, DRM, HDradio and OFDM (score: 34): Date: Sat, 09 Jun 2007 20:46:51 -0400; Hello, I was following the commit activity as I am learning SVN. I do not want to be drummed out of GNURadio for destroying a repository :). I spent the week down in Chattanooga on a business trip. L; /archive/html/discuss-gnuradio/2007-06/msg00070.html (6,049 bytes)
27. Re: [Discuss-gnuradio] DAB, RDS, DRM, HDradio and OFDM (score: 34): Date: Tue, 05 Jun 2007 18:19:29 -0400; Hello, I have some interest in IBOC. iBiquity has some information on the waveforms used. Maybe a person like Bob can figure out the parameters. http://www.ibiquity.com/i/pdfs/Waveforms_AM.pdf http:/; /archive/html/discuss-gnuradio/2007-06/msg00026.html (5,624 bytes)
28. Re: [Discuss-gnuradio] DAB, RDS, DRM, HDradio and OFDM (score: 34): Date: Mon, 04 Jun 2007 19:21:53 +0200; Thanks, I will have a look at it. greetings, Martin; /archive/html/discuss-gnuradio/2007-06/msg00019.html (4,914 bytes)
29. Re: [Discuss-gnuradio] DAB, RDS, DRM, HDradio and OFDM (score: 34): Date: Mon, 04 Jun 2007 09:07:47 -0700; Martin Dvh wrote: Hi all, Is anybody working on DAB, RDS,DRM, HDradio or OFDM at the moment. Actually, Tom, Eric, George, Thibaud, Bob, and myself are all at Virginia Tech this week, and we're workin; /archive/html/discuss-gnuradio/2007-06/msg00014.html (5,009 bytes)
30. [Discuss-gnuradio] RDS / TMC / DAB / DVB-S/T ? (score: 34): Date: Sat, 14 Oct 2006 08:47:36 +0200; I am new to GNUradio, there are some questions regarding GNUradio: Does it support RDS (http://en.wikipedia.org/wiki/Radio_Data_System), TMC (http://en.wikipedia.org/wiki/Traffic_Message_Channel), D; /archive/html/discuss-gnuradio/2006-10/msg00155.html (4,719 bytes)
31. Re: [Discuss-gnuradio] RDS (score: 34): Date: Wed, 11 Oct 2006 00:00:56 +0200; Hi folks! I'm going to take myself some time for the weekend to take a look at the RDS code I wrote some time ago. Also I'll do this agreement for FSF to get this code in the repo.. Especially, I has; /archive/html/discuss-gnuradio/2006-10/msg00110.html (5,266 bytes)
32. Re: [Discuss-gnuradio] upgrade the rds code to work on 3.1.2 (score: 33): Date: Wed, 20 Aug 2008 08:35:26 -0700 (PDT); Hi, > Dimitris Symeonidis wrote: > > What would you think of creating a page on the gnuradio wiki to put all this information > to make it available to others? I think there is always a need for such; /archive/html/discuss-gnuradio/2008-08/msg00225.html (5,977 bytes)
33. Re: [Discuss-gnuradio] upgrade the rds code to work on 3.1.2 (score: 33): Date: Wed, 20 Aug 2008 14:59:49 +0200; To convert to the new blocks just change the python words From: To: -- -- fg tb gr.flow_graph gr.top_block fftsink fftsink2 scopesink scopesink2 numbersink numbersink2 waterfallsink waterfallsink2 s; /archive/html/discuss-gnuradio/2008-08/msg00224.html (8,469 bytes)
34. Re: [Discuss-gnuradio] upgrade the rds code to work on 3.1.2 (score: 33): Date: Wed, 20 Aug 2008 03:27:36 -0700 (PDT); To convert to the new blocks just change the python words From: To: -- -- fg tb gr.flow_graph gr.top_block fftsink fftsink2 scopesink scopesink2 numbersink numbersink2 waterfallsink waterfallsink2 s; /archive/html/discuss-gnuradio/2008-08/msg00222.html (5,373 bytes)
35. Re: [Discuss-gnuradio] RDS / TMC / DAB / DVB-S/T ? (score: 33): Date: Sat, 14 Oct 2006 16:59:06 -0400; In fact many of the chip sets used to implement DVB modems (and other satellite QPSK demodulators) in the early days before highly integrated mixed signal ASIC stuff took over used actual 6 or 8 bit; /archive/html/discuss-gnuradio/2006-10/msg00166.html (8,723 bytes)
36. Re: [Discuss-gnuradio] RDS / TMC / DAB / DVB-S/T ? (score: 33): Date: Sat, 14 Oct 2006 14:06:01 -0400; David I. Emery wrote: On Sat, Oct 14, 2006 at 06:49:03AM -0700, Eric Blossom wrote: The USRP could receive the raw signals for DVB-T in the 6 and 7 MHz wide channel format. The 8 MHz wide version cou; /archive/html/discuss-gnuradio/2006-10/msg00164.html (8,869 bytes)
37. Re: [Discuss-gnuradio] RDS / TMC / DAB / DVB-S/T ? (score: 33): Date: Sat, 14 Oct 2006 13:54:16 -0400; DVB-S as used for video is usually upwards of 3 megasymbols/sec as this kind of data rate is required to support sufficient transport stream bandwidth for adequate distribution grade video. Many of t; /archive/html/discuss-gnuradio/2006-10/msg00163.html (9,433 bytes)
38. Re: [Discuss-gnuradio] RDS / TMC / DAB / DVB-S/T ? (score: 33): Date: Sat, 14 Oct 2006 16:04:36 +0200; It's not my priority right now, but it (at least some functionality and my student project report) has to be finished according to my university guidelines at the end of the year. Status of the code; /archive/html/discuss-gnuradio/2006-10/msg00157.html (6,395 bytes)
39. Re: [Discuss-gnuradio] RDS (score: 33): Date: Wed, 11 Oct 2006 12:33:50 -0700; Can one of the two of you repost the URL for the source? I know it's in the archives but the URL had an email address looking portion that got rewritten (for spam protection) by the mailing list soft; /archive/html/discuss-gnuradio/2006-10/msg00122.html (5,449 bytes)
40. Re: [Discuss-gnuradio] FM SCA (score: 8): Date: Sun, 24 Feb 2002 12:25:33 +0100; Yes, station id and description / infos are transmitted with RDS. In Europe (at least Germany) nearly every station uses RDS and also non-car radios use it.; /archive/html/discuss-gnuradio/2002-02/msg00032.html (5,507 bytes)
41. Re: [Discuss-gnuradio] FM SCA (score: 8): Date: Sun, 24 Feb 2002 02:23:42 -0800; What's RDS? I was driving a 2001 Audi the other day in Monterey, and it had an RDS button on the radio. I also noticed that depending on what station I was tuned to, I would get a station ID and mayb; /archive/html/discuss-gnuradio/2002-02/msg00031.html (6,026 bytes)
42. Re: [Discuss-gnuradio] Updating old 802.15.4 code to latest release (score: 6): Date: Thu, 6 Nov 2008 09:16:05 -0800; Hi Dimitris, I scanned over your code and think you just need to add "self" to one statement. We add self only if there is an external port. Your rds_rx block has an input but is a sink and therefore; /archive/html/discuss-gnuradio/2008-11/msg00118.html (13,586 bytes)
43. Re: [Discuss-gnuradio] Updating old 802.15.4 code to latest release (score: 6): Date: Thu, 6 Nov 2008 17:02:39 +0100; I gave it a shot, didn't work though... I was getting the error "ValueError: port number 0 exceeds max of (none)" here's my hier_block2: https://www.cgran.org/browser/projects/radio_data_system/trunk; /archive/html/discuss-gnuradio/2008-11/msg00113.html (12,081 bytes)
44. Re: [Discuss-gnuradio] Updating old 802.15.4 code to latest release (score: 6): Date: Tue, 4 Nov 2008 08:58:51 -0800; Hi Dimitris, I did find the source of the problem. I needed to add "self" at the beginning (and sometimes end) of the argument list for self.connect(). I looked through examples in the gnuradio codeb; /archive/html/discuss-gnuradio/2008-11/msg00069.html (10,203 bytes)
45. Re: [Discuss-gnuradio] Updating old 802.15.4 code to latest release (score: 6): Date: Tue, 4 Nov 2008 16:23:59 +0100; Hi Leslie, I have encountered the same problem in my RDS code (https://www.cgran.org/wiki/RDS) The error comes up because I have a top_block that creates a msg_queue and passes it (as an argument) to; /archive/html/discuss-gnuradio/2008-11/msg00065.html (8,009 bytes)
46. Re: [Discuss-gnuradio] FM SCA (score: 6): Date: Sun, 24 Feb 2002 13:48:40 +0100; RDS is the Radio Data System. It's a data sub-carrier (on 57kHz IIRC) with a set of services. A couple of these are: * Telling your radio what station you're listening to (so you can get the station; /archive/html/discuss-gnuradio/2002-02/msg00033.html (6,445 bytes)
47. Re: [Discuss-gnuradio] [USRP2] Building a FM Radio (score: 5): Date: Wed, 25 Mar 2009 14:41:04 +0100; You might want to take a look at https://www.cgran.org/wiki/RDS It's not GRC, but you could look at the drawings and create a similar flowgraph in GRC Good luck Dimitris Symeonidis "If you think you'; /archive/html/discuss-gnuradio/2009-03/msg00627.html (5,558 bytes)
48. Re: [Discuss-gnuradio] FM SCA (score: 5): Date: 23 Feb 2002 21:12:12 -0800; I didn't think anyone would use 92khz unless they were also using 67. I was in a rental car (2002 Buick) a few months ago and it had an RDS capable radio. Since I wasn't driving, I messed around wit; /archive/html/discuss-gnuradio/2002-02/msg00029.html (5,894 bytes)
49. [Discuss-gnuradio] Modifications to wfm_rcv_pll.py underway, modifications to gr_pll_carriertracking.cc done (score: 4): Date: Tue, 04 Apr 2006 18:50:46 -0400; Modifications to the FM stereo receiver have been underway for two days. Nothing that changes the way things work inside the FM stereo receiver were included in the tar balls. However a change that c; /archive/html/discuss-gnuradio/2006-04/msg00060.html (6,192 bytes)
50. Re: [Discuss-gnuradio] Re: Ideas for improved FM reception (score: 3): Date: Tue, 11 Dec 2007 23:47:44 +0100; Yes, that is exactly how I got the idea. So I intend to use RDS. I already have an RDS decoder in place. You still need a correlation for the phase/time relationship but you don't have to correlate e; /archive/html/discuss-gnuradio/2007-12/msg00123.html (5,966 bytes)
51. Re: [Discuss-gnuradio] wfm_rcv_pll.py (score: 3): Date: Fri, 24 Nov 2006 16:09:25 -0500; I looked over my analysis again. The Z transform version of the usual PLL equations leads directly to the alpha, beta calculation contained in the code which yields a critically damped phase locked l; /archive/html/discuss-gnuradio/2006-11/msg00365.html (7,219 bytes)
52. Re: [Discuss-gnuradio] Thesis work on GNU Radio (score: 3): Date: Tue, 27 Jun 2006 09:06:55 -0400; We have a reference implementation of RDS (the digital signal carried along some FM broadcast stations). That RDS code may not be checked in because it does not have the required permissions. Howeve; /archive/html/discuss-gnuradio/2006-06/msg00314.html (7,440 bytes)
53. [Discuss-gnuradio] mods to gr-carriertracking (score: 3): Date: Fri, 10 Mar 2006 15:39:27 -0500; I modified the gr complex pll carrier tracking. I changed the lock signal from a float to a bool. I added lock detection threshold setting. I added squelch and squelch enable. These changes were made; /archive/html/discuss-gnuradio/2006-03/msg00114.html (5,227 bytes)
54. Re: [Discuss-gnuradio] Stereo gain "hacked" (score: 3): Date: Mon, 13 Feb 2006 17:06:50 -0800; I seem to remember that the preemphasis on stereo signals is not performed on the multiplexed signal. It is actually performed on the audio components separately, before mixing with the stereo subcar; /archive/html/discuss-gnuradio/2006-02/msg00059.html (7,221 bytes)
55. Re: [Discuss-gnuradio] Stereo gain "hacked" (score: 3): Date: Mon, 13 Feb 2006 16:19:13 -0500; The stereo separation is pretty awesome. However on stations that are full quieting with monoaural transmissions, the stereo demultiplexer is introducing hiss. On really strong stations, it is hard t; /archive/html/discuss-gnuradio/2006-02/msg00053.html (6,474 bytes)
56. [Discuss-gnuradio] Modified wfm_rcv_pll, usrp_wfm_rcv_pll blocks, and gr_filter blocks (score: 3): Date: Mon, 06 Feb 2006 22:35:02 -0500; Today Eric showed me how to use gr_kludge_copy to finish the modifications to wfm_rcv_pll and we now have stereo receive on FM. These modification are a testimonial to the GnuRadio code and the ease; /archive/html/discuss-gnuradio/2006-02/msg00023.html (14,886 bytes)
57. Re: [Discuss-gnuradio] using ADC of a TV-card with CX2388x chip or digital TV-reception chips/cards (score: 3): Date: Mon, 24 Jan 2005 19:36:47 +0100; annoyed by the extra harmonics generated during no input. The input is from the onboard Philip FI1213 compatible tuner composite audio ouput. You can see the 19 kHz pilot stereo signal, the L-R sign; /archive/html/discuss-gnuradio/2005-01/msg00200.html (11,703 bytes)
58. Re: [Discuss-gnuradio] using ADC of a TV-card with CX2388x chip or digital TV-reception chips/cards (score: 3): Date: Mon, 24 Jan 2005 07:23:02 -0800 (PST); Months back, I did try using btaudio driver to get back samples from the audio ADC on the Bt878 (Pixelview PlayTV Pro TV card). Didn't work at first. Struggle for a few weeks. All I get are saturated; /archive/html/discuss-gnuradio/2005-01/msg00198.html (9,880 bytes)
59. Re: [Discuss-gnuradio] Sample recording (score: 3): Date: Thu, 1 Jan 2004 23:27:43 -0800 (PST); Hi Rob, If my understanding is correct, with a sampling rate of 48 kHz (sound card), I will not be able to sample properly the FM composite signal (left and right + RDS) which has frequencies up to ,; /archive/html/discuss-gnuradio/2004-01/msg00010.html (7,174 bytes)
60. [Discuss-gnuradio] AM/FM Chipset w/DSP IF (score: 3): Date: Thu, 18 Jul 2002 18:58:58 -0400; STMicroelectronics Develops DSP-based Digital AM/FM Radio Chipset That Directly Digitizes Intermediate Frequency Combination of BiCMOS front end and 0.18um CMOS baseband processor improves performanc; /archive/html/discuss-gnuradio/2002-07/msg00020.html (7,929 bytes)
61. [Discuss-gnuradio] SCA transmitter (score: 3): Date: Wed, 27 Feb 2002 10:24:06 -0500; if you can't find a SCA signal in your area for testing, i have a Catel FM stereo exciter with SCA audio inputs (unfortunately no RDS encoder.) it's a rackmount unit about 1.5" high, and not very he; /archive/html/discuss-gnuradio/2002-02/msg00039.html (6,068 bytes)
62. Re: [Discuss-gnuradio] FM SCA (score: 3): Date: Sat, 23 Feb 2002 15:48:44 -0800; Actually SCA can be at either 67 or 92KHz. Mono stations will normally do an SCA at 56Khz. Typically you will see it at 67Kc but at one time there were some stations in the Bay Area doing 92Kc. For i; /archive/html/discuss-gnuradio/2002-02/msg00028.html (8,348 bytes)
63. [Discuss-gnuradio] grc should warn, not fail with malformed xml (score: 2): Date: Fri, 3 Apr 2009 11:43:43 +0200; I am creating xml files for my RDS block, in order to be able to use it together with GRC. I had forgotten to close a tag in an xml file that I had put into /usr/local/share/gnuradio/grc/platforms/py; /archive/html/discuss-gnuradio/2009-04/msg00065.html (5,961 bytes)
64. [Discuss-gnuradio] arbitrary or variable numbers of inputs or outputs (score: 2): Date: Wed, 1 Apr 2009 17:57:26 +0200; Hi list, Lately I've been getting a strange error message when running a python graph that contains the wfm_rcv_pll block: Exception RuntimeError: 'maximum recursion depth exceeded while calling a Py; /archive/html/discuss-gnuradio/2009-04/msg00010.html (6,029 bytes)
65. Re: Re: [Discuss-gnuradio] Problem with OTA capture examples (score: 2): Date: Mon, 23 Feb 2009 15:58:05 -0800 (PST); Hello, I have the same problem : "audio_alsa_sink[hw:0,0]: unable to support sampling rate 32000 card requested 44100 instead. audio_alsa_sink[hw:0,0]: set_period_time_near failed: Invalid argument T; /archive/html/discuss-gnuradio/2009-02/msg00532.html (4,837 bytes)
66. Re: [Discuss-gnuradio] 3rd party software (was comedilib question) (score: 2): Date: Tue, 9 Sep 2008 21:20:22 +0200; Open source software and infrastructure grows by the volunteer efforts of those who find ideas important enough to go implement. What you describe is an excellent idea, but will remain only an expre; /archive/html/discuss-gnuradio/2008-09/msg00145.html (7,884 bytes)
67. [Discuss-gnuradio] Re: Qt and QWT (score: 2): Date: Sun, 24 Feb 2008 22:28:06 +0100; Bob McGwier schrieb am 2008-02-24 18:34: Patrick Strasser wrote: I've seen some messages reagrding Qt and GNU Radio, and some code in the repository. I'd like to use Qt and QWT. I guess I'm not the f; /archive/html/discuss-gnuradio/2008-02/msg00237.html (7,080 bytes)
68. Re: [Discuss-gnuradio] Qt and QWT (score: 2): Date: Sun, 24 Feb 2008 12:34:23 -0500; I've seen some messages reagrding Qt and GNU Radio, and some code in the repository. I'd like to use Qt and QWT. QWT simply looks great and very useful, and I hope to get better performance with Qt c; /archive/html/discuss-gnuradio/2008-02/msg00234.html (6,596 bytes)
69. Re: [Discuss-gnuradio] Re: Mode S and ADS-B (score: 2): Date: Mon, 14 May 2007 14:57:14 -0400; Hello, I am planning post-Dayton for svn. Things are not complete. I got some panel mount N connectors and made up a simple 1/4 wave groundplane for 1090 MHz. I tie-wrapped a 40 foot or so extending; /archive/html/discuss-gnuradio/2007-05/msg00166.html (6,666 bytes)
70. Re: [Discuss-gnuradio] Re: Mode S and ADS-B (score: 2): Date: Mon, 16 Apr 2007 20:24:46 +0200; They are very obsolete. I know Matt has been able to get a few, but he is also running out of them. You don't need a low-IF output as long as the frequency of the IF is not near a multiple of the niq; /archive/html/discuss-gnuradio/2007-04/msg00198.html (10,030 bytes)
71. [Discuss-gnuradio] Have USRP, will travel to SWL Fest (score: 2): Date: Sun, 04 Mar 2007 19:34:58 -0500; Tuesday I am heading off to the biggest pencil in the world for the Winter SWL Fest in Kulpsville. I am going to do some informal demos of the USRP and GNURadio. They have a digital radio table in a; /archive/html/discuss-gnuradio/2007-03/msg00107.html (4,934 bytes)
72. [Discuss-gnuradio] USRP WFM SCA RX Example (score: 2): Date: Sat, 13 Jan 2007 22:24:12 -0500; Here is a bit of code that will receive SCA analog subcarriers of FM Broadcast Stations using the USRP. It is a modified version of usrp_wfm_rcv.py. Common SCA frequencies are 67 kHz and 92 kHz. SCA; /archive/html/discuss-gnuradio/2007-01/msg00119.html (19,626 bytes)
73. [Discuss-gnuradio] strange consume behaviours on input channels (score: 2): Date: Mon, 25 Dec 2006 23:43:13 +0100; First of all merry xmas to everyone on the list! I was checking the code for byphase decoding of rds, and I have noticed that in the ST_LOOKING state the author waits for two valid zero crossings in; /archive/html/discuss-gnuradio/2006-12/msg00253.html (8,532 bytes)
74. Re: [Discuss-gnuradio] FM Radio USB Dongles? (score: 2): Date: Fri, 10 Nov 2006 18:44:19 -0500; http://www.silabs.com/tgwWebApp/public/web_content/products/Broadcast/Radio_Tuners/en/Si4700-01.htm According to the reference design (AN264), they are taking the analog out from the Si4700, putting; /archive/html/discuss-gnuradio/2006-11/msg00172.html (6,153 bytes)
75. [Discuss-gnuradio] Stereo FM receiver: wfm_rcv_pll.py and usrp_wfm_rcv_pll.py (score: 2): Date: Fri, 07 Apr 2006 13:48:26 -0400; The functional stereo squlech with a slider controlling the level has been added to usrp_wfm_rcv_pll.py. All of the activity on wfm_rcv_pll.py in the last 24 hours has been getting gains, loop parame; /archive/html/discuss-gnuradio/2006-04/msg00150.html (5,507 bytes)
76. [Discuss-gnuradio] Stereo FM mo (score: 2): Date: Wed, 05 Apr 2006 19:14:24 -0400; The FM stereo simple block, wfm_rcv_pll.py, has been modified to recover the carrier using gr_pll_carriertracking. I noticed an immediate drop in the hiss here. We probably need to do some gain manag; /archive/html/discuss-gnuradio/2006-04/msg00092.html (4,484 bytes)
77. Re: [Discuss-gnuradio] Stereo gain "hacked" (score: 2): Date: Tue, 14 Feb 2006 00:51:11 -0500; I did deemphasis on Left and Right and checked it in just now. It is much better now. Thanks for the links to the RDS stuff. I will take a look. THANKS it already sounds much better. Bob al davis wr; /archive/html/discuss-gnuradio/2006-02/msg00067.html (7,208 bytes)
78. Re: [Discuss-gnuradio] Stereo gain "hacked" (score: 2): Date: Mon, 13 Feb 2006 22:18:41 -0700 (MST); Here is a link to the RBDS standard: ftp://ftp.rds.org.uk/pub/acrobat/rbds1998.pdf And another link to the digital AM radio standard: http://www.ibiquity.com/technology/pdf/Waveforms_AM.pdf; /archive/html/discuss-gnuradio/2006-02/msg00064.html (9,400 bytes)
79. Re: [Discuss-gnuradio] Stereo gain "hacked" (score: 2): Date: Tue, 14 Feb 2006 00:13:31 -0500; Thanks for your input. I am pretty ignorant about these FM standards and basically I googled my way to a reasonable spec, drew the flow graph and coded it. The stereo demux was definitely not workin; /archive/html/discuss-gnuradio/2006-02/msg00063.html (9,104 bytes)
80. Re: [Discuss-gnuradio] Sample recording (score: 2): Date: Sun, 04 Jan 2004 15:06:35 +1100; Hi MiB, Yes, covering that sort of range requires downconverters for sure. I'm running the SDR-1000 at http://www.flex-radio.com for the first 70MHz and plan to add more boards to get to at least 1GH; /archive/html/discuss-gnuradio/2004-01/msg00022.html (8,153 bytes)
81. Re: [Discuss-gnuradio] Sample recording (score: 2): Date: Sat, 3 Jan 2004 23:41:38 +0100; I my case I need to cover 30.-2000 Mhz and need probably a cascade system if no other alternative is possible. Any hints for this? SM0UGT; /archive/html/discuss-gnuradio/2004-01/msg00017.html (7,438 bytes)
82. Re: [Discuss-gnuradio] Sample recording (score: 2): Date: Fri, 2 Jan 2004 00:04:40 -0800 (PST); Thanks. Those files will be very much helpful. __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/; /archive/html/discuss-gnuradio/2004-01/msg00011.html (6,583 bytes)
83. Re: [Discuss-gnuradio] Sample recording (score: 2): Date: Thu, 1 Jan 2004 22:13:47 -0800; This file contains a couple of FM stations. There's one at 5.75 MHz. http://www.comsec.com/data/fm95_5.dat.bz2 (44 MB) See http://www.comsec.com/data/README Eric; /archive/html/discuss-gnuradio/2004-01/msg00008.html (6,051 bytes)
84. Re: [Discuss-gnuradio] Sample recording (score: 2): Date: Fri, 02 Jan 2004 15:20:02 +1100; The bandwidth required to download such signals would be enormous. You can do a lot with a simple receiver with a homemade IF set to half the nyquist frequency, in your case 12kHz. Rob; /archive/html/discuss-gnuradio/2004-01/msg00005.html (6,361 bytes)
85. [Discuss-gnuradio] Sample recording (score: 2): Date: Thu, 1 Jan 2004 02:25:12 -0800 (PST); A friend introduce to me the concept of software radio. I became interested and was trying to capture the FM composite signal off my TV/FM tuner card using the PC sound card. Since the sound card sa; /archive/html/discuss-gnuradio/2004-01/msg00000.html (5,140 bytes)
86. [Discuss-gnuradio] Digital FM (score: 2): Date: Thu, 10 Oct 2002 16:55:07 -0700; Does anyone know where I can find a spec on the new digital Fm and digital AM standards from iBiquity? Apparently they've just been approved by the FCC. The one for FM sounds like some sort of subcar; /archive/html/discuss-gnuradio/2002-10/msg00008.html (3,887 bytes)
87. Re: [Discuss-gnuradio] SCA transmitter (score: 2): Date: Mon, 4 Mar 2002 10:55:30 -0800; Matt... I have a couple of low power FM xmitters that have stereo gens in them. Give a shout if you need one. Tim -- Snail: Tim Pozar / LNS / 1978 45th Ave / San Francisco CA 94116 / USA POTS: +1 415; /archive/html/discuss-gnuradio/2002-03/msg00010.html (5,202 bytes)
88. RE: [Discuss-gnuradio] SCA transmitter (score: 2): Date: Mon, 4 Mar 2002 10:45:01 -0800; Thanks for the offer. Are you located in the Bay Area? I could probably use it for FM stereo testing too. Thanks Matt; /archive/html/discuss-gnuradio/2002-03/msg00009.html (4,443 bytes)
89. Re: [Discuss-gnuradio] SCA transmitter (score: 2): Date: Wed, 27 Feb 2002 21:47:05 -0800; Mark Roberts was kind enough to do a scan of the FM band for SCAs for me as I am on the wrong side of the hill (outer sunset) to hear anything. Here is what he found... -- Bandscan from the GE SR III; /archive/html/discuss-gnuradio/2002-02/msg00042.html (6,655 bytes)
90. RE: [Discuss-gnuradio] GNU Radio 0.3 Released (score: 2): Date: Tue, 26 Feb 2002 18:24:32 -0800; If anyone can find an audio SCA station and tell me if it sounds ok, it sure would help out a lot. I can't find any. Or if anyone has a small FM transmitter which can generate SCA, and could lend it; /archive/html/discuss-gnuradio/2002-02/msg00036.html (6,594 bytes)

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