[Discuss-gnuradio] using DAB+FM+DVB-T dongle for spectrum monitoring

2016-04-04 Thread vempati Sarma
Hi All, I am trying to use my first hardware with gnuradio and facing problems.Would be thankful for any help. DAB+FM+DVB-T dongle; alternately described as DVB-T tv stick DAB RTL2832U R820T 25MHz-1700MHz (SDR E4000 upgrade version) for Win 8 HMP_430 My OS is Ubuntu 14.04 LTS on Compaq nx6115. Sinc

Re: [Discuss-gnuradio] Is cmake 3.0 really required now?

2016-04-04 Thread Martin Braun
Greg, note that this is a requirement of gr-fcdproplus. GNU Radio works with CMake 2.6, although we'll surely bump that in the not-to-far future. M On 04/04/2016 06:16 PM, Gregory W. Ratcliff wrote: > Old Pybombs > 14.04 LTS (you know stable stuff) > > Installing packages: > * gr-fcdproplus > I

Re: [Discuss-gnuradio] Trying to build a DVB-S2 LDPC decoder

2016-04-04 Thread Martin Braun
Jose, we have a *lot* of smart FEC stuff, including LDPC codes, in gr-fec. I suggest you take a look there. Cheers, M On 04/04/2016 04:41 PM, Jose Ruvalcaba wrote: > Hello, > > I am new to GNU radio and to SDR's and I am trying to implement a DVB-S2 > LDPC decoder block that can be used with th

[Discuss-gnuradio] Is cmake 3.0 really required now?

2016-04-04 Thread Gregory W. Ratcliff
Old Pybombs14.04 LTS (you know stable stuff) Installing packages: * gr-fcdproplus Installing from source: gr-fcdproplus       CC=gcc CXX=g++ cmake .. -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=/home/gratcliff/Downloads/target $config_opt CMake Error at CMakeLists.txt:32 (cmake_minim

Re: [Discuss-gnuradio] costas ambiguity and correlate-and-sync block in qpsk

2016-04-04 Thread Landsman, Arik
Hi Andy, Added a few comments inline (marked with "==" in lieu of a better email client).. But overall corr_est works very consistently. I did have a few observations: - changed feed-forward AGC num_samples = 128 (from 2048, to allow faster recovery with fading ch sim). The value has some ef

[Discuss-gnuradio] Trying to build a DVB-S2 LDPC decoder

2016-04-04 Thread Jose Ruvalcaba
Hello, I am new to GNU radio and to SDR's and I am trying to implement a DVB-S2 LDPC decoder block that can be used with the LDPC DVB-S2 encoder available in GNU radio. I have been able to write an LDPC decoder which uses a 16,200 long parity check matrix used only for a DVB-S2 short frame, rate

Re: [Discuss-gnuradio] Setting the noutput_items variable in a tagged_stream_block

2016-04-04 Thread Martin Braun
On 04/02/2016 05:22 PM, Gonzalo Arcos wrote: > The problem i am facing is that when work() is called for the ofdm > carrier allocator, the value of the parameter *noutput_items *has > nothing to do with the number returned > by *calculate_output_stream_length. *I was expecting for it to be the > sa

Re: [Discuss-gnuradio] Strange UHD Error

2016-04-04 Thread Martin Braun
What's your UHD version, and does the error go away when you revert your changes? M On 04/02/2016 12:48 PM, Simon Olvhammar wrote: > Hi, > > I'm using GNURadio with Python and all communication is handled over a > socket server e.g. stopping and starting measurements. This have been > working fi

Re: [Discuss-gnuradio] GRCon16 links

2016-04-04 Thread Ben Hilburn
Hi Lou - Sorry, this message made it past me. Yes, the link is live! It went up early afternoon Eastern time on the 30th, so your message must have just beat the posting. Cheers, Ben On Wed, Mar 30, 2016 at 12:43 PM, madengr wrote: > I see a link here: > > http://gnuradio.org/grcon-2016/ > > I

Re: [Discuss-gnuradio] [USRP-users] X310 with SBX120's

2016-04-04 Thread Alexander Levedahl
Please hit reply all in future. I am uncertain what the present issue is. The research cannot happen if the level does not change with the direction of the antenna. It appears that it is changing with the direction of the antenna, or did I read your email incorrectly. On Mon, Apr 4, 2016 at 7:

Re: [Discuss-gnuradio] Fwd: c++ flowgraph

2016-04-04 Thread Marcus Müller
Hi Havard, try the in-tree QA tests, for example gnuradio/gr-blocks/lib/qa_gr_block.cc. In essence: #include //Include all the headers you'll need, e.g. other blocks' headers #include #include int main() { gr::block_sptr src1(gr::blocks::null_source::make(sizeof (int))); gr::block_sptr

Re: [Discuss-gnuradio] costas ambiguity and correlate-and-sync block in qpsk

2016-04-04 Thread Andy Walls
On Sun, 2016-04-03 at 19:33 -0400, Andy Walls wrote: > On Sun, 2016-04-03 at 20:24 +, Landsman, Arik wrote: > > > btw, played with tag delay manually, this has an immense effect on > > costas rotation once fading model is added to channel. > > Well there are a number of things going on here,

[Discuss-gnuradio] SDRA 2016 Programme

2016-04-04 Thread Markus Heller
Dear lists, here is the preliminary programme of the Software Defined Radio Academy which will take place on Saturday June 25 as part of HAMRADIO Friedrichshafen. Please spread the word: I hope to welcome many of you at Friedrichshafen! vy73 markus dl8rds > 1000-1010 Prof. Dr. Michael Har