Re: [Discuss-gnuradio] How to check that HRPT receiver is working

2014-03-24 Thread Patrik Tast
Hi, Open using GRC for example file usrp_rx_hrpt.grc and set default values and finally press the "Execute flow graph" tool button Patrik On Sun, 2014-03-23 at 09:07 +0100, Pablo Fernández Alonso wrote: > Hello, > > > > I am working with the HRPT receiver’s files included in gr-noaa and I >

[Discuss-gnuradio] D-Star DD (ham radio dataystem) anyone?

2014-03-24 Thread Ralph A. Schmid, dk5ras
Hi, I wonder if the ham radio data protocol D-Star DD has already been done with gnuradio? This is some wireless ham radio Ethernet at 1.2 GHz, see for example http://www.qsl.net/kb9mwr/projects/voip/dstar/DD_packet_structure.pdf. The Icom radios go out of production, but radios like bladeRF o

Re: [Discuss-gnuradio] looping with work() function

2014-03-24 Thread Sumedha Goyal
Hi Activecat The description that you have given matches quite closely to my requirements. Kindly send me the sample code. I will try it out with my setup. >We need to set_max_noutput_items() to a small value, so that the block >response fast enough to the ACK signal. >This block should continuou

Re: [Discuss-gnuradio] AM Stereo TX? (Motorola C-QUAM)

2014-03-24 Thread Bruce Hoenig
Marcus, Here's what I found, with a google image search, there are some interesting images and discussions of the modulation techniques there with both block and flow diagrams. This one seems very interesting and probably makes it similar to what might have to be done with gnuradio. http://jsgi

Re: [Discuss-gnuradio] AM Stereo TX? (Motorola C-QUAM)

2014-03-24 Thread Marcus D. Leech
On 03/24/2014 07:59 PM, Jordan Johnson wrote: I have been Googling a good deal and have not come up with much. I have done numerous projects with GNURadio, but while I can throw together a wideband AM transmitter, I cannot figure out the stereo portion. Based on what I know; it is some kind of

Re: [Discuss-gnuradio] State of the art research

2014-03-24 Thread Johannes Demel
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Alexander, I'll try to give you some answers. > 1. Are there working examples for producing 3G, UMTS, LTE, WiMAX > signals etc.? Are there implementations including MAC layer > support? gr-lte might be interesting for you, if a PHY layer implement

[Discuss-gnuradio] AM Stereo TX? (Motorola C-QUAM)

2014-03-24 Thread Jordan Johnson
I have been Googling a good deal and have not come up with much. I have done numerous projects with GNURadio, but while I can throw together a wideband AM transmitter, I cannot figure out the stereo portion. Based on what I know; it is some kind of phase-modulated information. Anyone know how to

Re: [Discuss-gnuradio] Pad block in ieee802_15_4_mac block

2014-03-24 Thread Bastian Bloessl
Hi, On 24 Mar 2014, at 22:20, Ruecan wrote: > How can I have a file source connected as a pad source to an hierarchical > block ? > More precisely, I have for example the hierarchical block ieee802_15_4_mac, > and instead of feeding the block in input with a socket pdu block I want to > connect

[Discuss-gnuradio] GSoC 2014 Signal Visualization and Analysis

2014-03-24 Thread Dean Nida
I have to adjust my summer workload as my school has just made changes to its course offerings this summer. My new course load is going to be prohibitively time consuming and I will not be able to take part in GSoC so I am withdrawing my proposal. It would have been great to work on this project fu

Re: [Discuss-gnuradio] TX characterisation of USRPN210 with SBX daughterboard

2014-03-24 Thread Gayathri Ramasubramanian
Hi Ron Sorry about that. Please find attached the modified graph. The two curves seems more consistent in this graph. I am assuming the DAC should have reached saturation at Ampl =1. However my reading don't seem to depict that so well. Would it have been better to started at such lower values of

[Discuss-gnuradio] Pad block in ieee802_15_4_mac block

2014-03-24 Thread Ruecan
Hello GR, How can I have a file source connected as a pad source to an hierarchical block ? More precisely, I have for example the hierarchical block ieee802_15_4_mac, and instead of feeding the block in input with a socket pdu block I want to connect it to a file source and broadcast a word,

[Discuss-gnuradio] Pad block in ieee802_15_4_mac block

2014-03-24 Thread Ruecan
Hello GR, How can I have a file source connected as a pad source to an hierarchical block ? More precisely, I have for example the hierarchical block ieee802_15_4_mac, and instead of feeding the block in input with a socket pdu block I want to connect it to a file source and broadcast a word, #se

Re: [Discuss-gnuradio] TX characterisation of USRPN210 with SBX daughterboard

2014-03-24 Thread Ron Economos
The graph doesn't match your numbers. Ron On 3/23/2014 8:56 PM, Gayathri Ramasubramanian wrote: Hi, I am trying to characterize the TX and RX characteristics of USRPN210 with a SBX board. I have tried one test : Amplitude Variation effects, by varying the amplitude in steps and finding out the

[Discuss-gnuradio] State of the art research

2014-03-24 Thread Alexander Buckley
Hello all I have been trying to discover what is currently available in terms of open source, working out-of-the box, modules implemented in GNU Radio and the USRP, to use as a teaching aid with students. I am interested in a few things, waveform generation, protocol stacks and signal analysis.

Re: [Discuss-gnuradio] TX characterisation of USRPN210 with SBX daughterboard

2014-03-24 Thread Gayathri Ramasubramanian
Hi Martin Thanks for looking into my post. I used a cable to connect to the spectrum analyzer ( united microflex 150 with 15 db/ft attenuation, my cable length was 1 ft). However before connecting to the spectrum analyzer, I had an attenuator set to 50 dB. These readings were taken with a gain set

Re: [Discuss-gnuradio] Performance drop with upgrade to 3.7

2014-03-24 Thread West, Nathan
On Mon, Mar 24, 2014 at 7:17 AM, Luke Berndt wrote: > Hi - I just upgraded to 3.7.3 using the build-gnuradio script from 3.6.5.1. > I am using it to run a C++ App that captures all the radio communications on > a Moto SmartNet system. I upgraded all my code to work with the 3.7 naming > scheme and

Re: [Discuss-gnuradio] TX characterisation of USRPN210 with SBX daughterboard

2014-03-24 Thread Martin Braun
On 03/24/2014 05:56 AM, Gayathri Ramasubramanian wrote: > I am trying to characterize the TX and RX characteristics of USRPN210 > with a SBX board. I have tried one test : Amplitude Variation > effects, by varying the amplitude in steps and finding out the o/p > power through spectrum analyser. The

[Discuss-gnuradio] listen to ports issue using GNU Radio

2014-03-24 Thread Ruecan
Hello GR, I have an issue capturing a word that I broadcast from transceiver A to transceiver B. I use GR 3.65 with two usrp N210 on a Centos machine. Whenever I run transceiverA and transceiverB scripts on the same machine it does not capture the word I am sending and I got no error displayed.

[Discuss-gnuradio] Performance drop with upgrade to 3.7

2014-03-24 Thread Luke Berndt
Hi - I just upgraded to 3.7.3 using the build-gnuradio script from 3.6.5.1. I am using it to run a C++ App that captures all the radio communications on a Moto SmartNet system. I upgraded all my code to work with the 3.7 naming scheme and got everything to compile and run. Everything runs in 3.7, b

Re: [Discuss-gnuradio] UHD build apparently failed

2014-03-24 Thread Moritz Fischer
Hi all, thanks for testing. Parts of that is already internally fixed on our branches for the rest I created patches. I expect this to be pushed to the public master in the next days. Thanks for hanging in there, Moritz On Mon, Mar 24, 2014 at 12:11 AM, Marcus D. Leech wrote: > On 03/23/201