# GNU Radio **URL:** https://www.ruby-forum.com/c/gnu-radio/15.md?page=5 [Latest](https://www.ruby-forum.com/latest.md) · [Categories](https://www.ruby-forum.com/categories.md) · [Tags](https://www.ruby-forum.com/tags.md) **Page:** 6 --- ## [Difficulties with Gnuradio on Odroid C1](https://www.ruby-forum.com/t/difficulties-with-gnuradio-on-odroid-c1/244123)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [February 23, 2016, 8:05pm UTC](https://www.ruby-forum.com/t/difficulties-with-gnuradio-on-odroid-c1/244123 "2016-02-23T20:05:44Z")
I really hope that you can help me. So I wrote a simple Programm in Gnu Radio Companion that is able to transmit a text file with use of a HackRf One. The Programm works fine on my two laptops (both on Ubuntu 15.10, l… --- ## [GNU Radio in Drones](https://www.ruby-forum.com/t/gnu-radio-in-drones/244107)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [February 21, 2016, 9:29pm UTC](https://www.ruby-forum.com/t/gnu-radio-in-drones/244107 "2016-02-21T21:29:56Z")
Hello everyone: I’m Jalil Modares, a Ph.D. student in the Department of Electrical and Computer Engineering at UB. We are working on an US Air Force funded project named UB-ANC, which is about Airborne Networks and C… --- ## [Help with OOT Error](https://www.ruby-forum.com/t/help-with-oot-error/244034)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [February 9, 2016, 9:28pm UTC](https://www.ruby-forum.com/t/help-with-oot-error/244034 "2016-02-09T21:28:26Z")
Hi, I am trying to run an OOT module but I am getting the following errors. GRC can’t seem to locate the OOT modules but I cannot figure out how to fix it. Please advise. \<\<\< Welcome to GNU Radio Companion v3.7.4git… --- ## [Top\_block start not returning](https://www.ruby-forum.com/t/top-block-start-not-returning/243980)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [February 1, 2016, 7:01am UTC](https://www.ruby-forum.com/t/top-block-start-not-returning/243980 "2016-02-01T07:01:55Z")
Hi, I have a simple connection with a null source and sink, but when I try to start the top\_block, the start function doesn’t return. I’m simply using the GrTemplate project for Android. I don’t see the “Exiting FgSt… --- ## [SC-FDMA Module](https://www.ruby-forum.com/t/sc-fdma-module/223859)
**Author:** [@aris](https://www.ruby-forum.com/u/aris)\ **Replies:** 1\ **Last updated:** [January 24, 2016, 7:07pm UTC](https://www.ruby-forum.com/t/sc-fdma-module/223859 "2016-01-24T19:07:09Z")
Hello everyone, I am doing a research for a work and i need to find a SC-FDMA module or material to implement, and I can’t find anything useful in this area, do you know where can i find it, code or something useful i… --- ## [Trying to decode 2-gfsk from TI CC1125](https://www.ruby-forum.com/t/trying-to-decode-2-gfsk-from-ti-cc1125/243901)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [January 23, 2016, 5:03pm UTC](https://www.ruby-forum.com/t/trying-to-decode-2-gfsk-from-ti-cc1125/243901 "2016-01-23T17:03:26Z")
Hi, I’m trying to decode data transmitted by TI cc1125 http://www.ti.com/lit/ug/swru295e/swru295e.pdf radiochip and received with hackrf. The transmission is using 2-gfsk modulation and the transmissions are encoded … --- ## [Signal Decoding Problems](https://www.ruby-forum.com/t/signal-decoding-problems/243786)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [January 6, 2016, 12:25pm UTC](https://www.ruby-forum.com/t/signal-decoding-problems/243786 "2016-01-06T12:25:08Z")
Hey, I’m trying to decode a Enocean signal, but can’t link the received data to the corresponding byte sequence, which was decoded by an Enocean receiver. Following the Enocean specifications the signal (attached) is … --- ## [Adding source module to gnu radio android](https://www.ruby-forum.com/t/adding-source-module-to-gnu-radio-android/243781)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [January 5, 2016, 6:57pm UTC](https://www.ruby-forum.com/t/adding-source-module-to-gnu-radio-android/243781 "2016-01-05T18:57:27Z")
I have built the gnu radio for android and installed it. I need to add my source module to the build. Is there any instructions for doing this? Thanks ahead of time, Y- --- ## [Real-time FFT over multiple symbols](https://www.ruby-forum.com/t/real-time-fft-over-multiple-symbols/243718)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [December 25, 2015, 10:52pm UTC](https://www.ruby-forum.com/t/real-time-fft-over-multiple-symbols/243718 "2015-12-25T22:52:10Z")
Hello Firstly, I should say that I am new to GNURadio, and I am still learning to work with the basics through Tutorials and Videos. I am trying to do FFT over multiple symbols (OFDM, each with 64 streams). My flow … --- ## [N210 & WBX for sale](https://www.ruby-forum.com/t/n210-wbx-for-sale/243322)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 3\ **Last updated:** [December 15, 2015, 2:37pm UTC](https://www.ruby-forum.com/t/n210-wbx-for-sale/243322 "2015-12-15T14:37:09Z")
Hi, I’m not using my N210 neither my WBX any longer and i wonder if someone might be interested in buying them. They have been used very little. If someone is interested, please send me a private message. Regards, J… --- ## [Locationg mobile phones with a radar](https://www.ruby-forum.com/t/locationg-mobile-phones-with-a-radar/243626)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [December 12, 2015, 8:07pm UTC](https://www.ruby-forum.com/t/locationg-mobile-phones-with-a-radar/243626 "2015-12-12T20:07:55Z")
Hi guys I’m working on a project where i need to determine the distance from my USRP B210 to mobile phones nearby. For my understanding there is a way to do so by sending a pulse, and studying the reflection from mob… --- ## [GNUradio DQPSK bit error rate](https://www.ruby-forum.com/t/gnuradio-dqpsk-bit-error-rate/243565)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [December 4, 2015, 8:04pm UTC](https://www.ruby-forum.com/t/gnuradio-dqpsk-bit-error-rate/243565 "2015-12-04T20:04:59Z")
Hello all Almost a month ago i started working on a digital communications project which involves GNUradio. I am now severely struggling to get past some errors or mismatches I am encountering in GNUradio. I am desp… --- ## [N210 connects but unreachable, only orange light ON](https://www.ruby-forum.com/t/n210-connects-but-unreachable-only-orange-light-on/203341)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 3\ **Last updated:** [December 3, 2015, 5:09am UTC](https://www.ruby-forum.com/t/n210-connects-but-unreachable-only-orange-light-on/203341 "2015-12-03T05:09:31Z")
Hi, The N210 we had was returning ping requests after we managed to burn the latest firmware and fpga images on to it from http://www.ettus.com/downloads/uhd\_images/UHD-images-most-recent/. At that point the green l… --- ## [Help usrpn210+gnuradio](https://www.ruby-forum.com/t/help-usrpn210-gnuradio/243525)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [December 1, 2015, 12:26pm UTC](https://www.ruby-forum.com/t/help-usrpn210-gnuradio/243525 "2015-12-01T12:26:12Z")
Hello everybody I just start working on USRP with Gnu radio. In last two weeks I was looking for tutorial to test my USRP without programming any blocks. The only tutorial I found is an FM receiver, but unfortunately … --- ## [Inconsistant Gain in X310](https://www.ruby-forum.com/t/inconsistant-gain-in-x310/233174)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 8\ **Last updated:** [November 29, 2015, 6:53pm UTC](https://www.ruby-forum.com/t/inconsistant-gain-in-x310/233174 "2015-11-29T18:53:34Z")
Hello, I am running into a small issue with the X310 USRP. My basic setup involves receiving from two antennas (or at this point CW tones from signal generators) using two basic RX daughter cards. My problem is that … --- ## [OPENLTE: there are fatal error when launch LTE\_fdd\_dl\_file\_gen.py"](https://www.ruby-forum.com/t/openlte-there-are-fatal-error-when-launch-lte-fdd-dl-file-gen-py/243511)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [November 24, 2015, 3:00pm UTC](https://www.ruby-forum.com/t/openlte-there-are-fatal-error-when-launch-lte-fdd-dl-file-gen-py/243511 "2015-11-24T15:00:48Z")
Hi , I am trying to build OPENLTE in MAC OS. but after the building, I try to launch the python script LTE\_fdd\_dl\_file\_gen.py" it always results fatal error: Fatal Python error: PyThreadState\_Get: no current thread … --- ## [(DVB-T2) Question for people whith wideband SDR](https://www.ruby-forum.com/t/dvb-t2-question-for-people-whith-wideband-sdr/234536)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [November 21, 2015, 7:58pm UTC](https://www.ruby-forum.com/t/dvb-t2-question-for-people-whith-wideband-sdr/234536 "2015-11-21T19:58:08Z")
Hi, i work on software T2 decoder. Now decoder can detect and demodulate P1 symbol, and estimate sample rate and carrier offset mostly correctly on gaussian noise channel. (P1 Detection impemented like in “DVB-T2 Imp… --- ## [GRC blocks for GPS processing](https://www.ruby-forum.com/t/grc-blocks-for-gps-processing/243503)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [November 21, 2015, 7:38am UTC](https://www.ruby-forum.com/t/grc-blocks-for-gps-processing/243503 "2015-11-21T07:38:01Z")
Good day mam/sir! I am making an undergraduate project about GPS receiver using gnu radio. I would like to ask if there’s anyone who knows the blocks used for gps processing that can receive gps L1 signal (1575.42MHz)… --- ## [OFDM using USRP](https://www.ruby-forum.com/t/ofdm-using-usrp/243476)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [November 12, 2015, 5:17pm UTC](https://www.ruby-forum.com/t/ofdm-using-usrp/243476 "2015-11-12T17:17:03Z")
Hello. I’m trying to set up OFDM using TI USRP 2921. At start I wanted to use 16QAM as modulation, but OFDM Mod block has no options for sync. I switched to OFDM Tansmitter and choose QPSK. I have to main problems: … --- ## [LTE Receiver Framework](https://www.ruby-forum.com/t/lte-receiver-framework/243471)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [November 11, 2015, 5:07pm UTC](https://www.ruby-forum.com/t/lte-receiver-framework/243471 "2015-11-11T17:07:15Z")
Hi. I downloaded the latest version of gnuradio(3.7.8.1) and complied the code for the LTE Receiver framework. However I am having problems with the results. I have attached the screenshot of the final output of the L… --- ## [How to use Eng Notation on QTGUI Vector Sink?](https://www.ruby-forum.com/t/how-to-use-eng-notation-on-qtgui-vector-sink/243453)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [November 4, 2015, 3:26pm UTC](https://www.ruby-forum.com/t/how-to-use-eng-notation-on-qtgui-vector-sink/243453 "2015-11-04T15:26:18Z")
Good day!!! I’m trying to use the eng notation in a QTGUI Vector Sink but I don’t know how. I’m getting spectrum information and I have data around 9.97E08 but I would like to display that information like this: 9.97M… --- ## [The phase calibration of two USRP(dboard)](https://www.ruby-forum.com/t/the-phase-calibration-of-two-usrp-dboard/243447)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [November 2, 2015, 5:13pm UTC](https://www.ruby-forum.com/t/the-phase-calibration-of-two-usrp-dboard/243447 "2015-11-02T17:13:57Z")
Hi, everyone.I am doing the estimation angle of arrival by using USRP. The problem I want to fix is the initial phase offset of each dboards. From now on, I have searched some knowledge about this issue. But I can not… --- ## [SDR Processing/Computational Requirements](https://www.ruby-forum.com/t/sdr-processing-computational-requirements/243429)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [October 24, 2015, 11:54pm UTC](https://www.ruby-forum.com/t/sdr-processing-computational-requirements/243429 "2015-10-24T23:54:00Z")
Hello Gents, I am in the phase of designing a Software Defined Radio, and I should state the (Processing/Computational Requirements) of the processor/FPGA/DSP to be used. SDR Parameters: Operational band: 70-3800… --- ## [How to add a new block](https://www.ruby-forum.com/t/how-to-add-a-new-block/243240)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 5\ **Last updated:** [October 19, 2015, 4:43pm UTC](https://www.ruby-forum.com/t/how-to-add-a-new-block/243240 "2015-10-19T16:43:44Z")
ubuntu@ubuntu:~/gr-howto$ gr\_modtool makexml square\_ff GNU Radio module name identified: howto Warning: This is an experimental feature. Don’t expect any magic. Searching for matching files in lib/: Making GRC bindin… --- ## [File received problem](https://www.ruby-forum.com/t/file-received-problem/243413)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [October 19, 2015, 2:31pm UTC](https://www.ruby-forum.com/t/file-received-problem/243413 "2015-10-19T14:31:15Z")
Hi, I am currently working on transmiting and receiving txt files and images using 2 USRPN200s. The flowgraphs are as follow: TX: File source --\> Packet encoder --\> GMSK Mod --\> multiply const–\> UHD sink. RX: UHD s… --- ## [pyBombs x Gnuradio](https://www.ruby-forum.com/t/pybombs-x-gnuradio/243412)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [October 16, 2015, 6:59pm UTC](https://www.ruby-forum.com/t/pybombs-x-gnuradio/243412 "2015-10-16T18:59:32Z")
Hello, guys, I was considering use pyBombs to see how it works and the advantages that it can provide. However, I have Gnuradio installed. Can I proceed with the installation of pyBombs without change my current Gnura… --- ## [Unknown install type error in Pybombs](https://www.ruby-forum.com/t/unknown-install-type-error-in-pybombs/243407)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [October 15, 2015, 6:17pm UTC](https://www.ruby-forum.com/t/unknown-install-type-error-in-pybombs/243407 "2015-10-15T18:17:59Z")
Hi All, Pybombs was working great until today when I installed gqrx (in Pybombs). I also ran ./jenkins.sh just to see what it did. After this, anytime I try to install something via Pybombs, I get an error that state… --- ## [Itemsize mismatch C++](https://www.ruby-forum.com/t/itemsize-mismatch-c/243405)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [October 15, 2015, 4:04pm UTC](https://www.ruby-forum.com/t/itemsize-mismatch-c/243405 "2015-10-15T16:04:46Z")
While trying to connect Signal Source block and a Noise block to an add block then to a usrp\_sink I get an itemsize mismatch error at runtime: what(): itemsize mismatch: sig\_source\_c0:0 using 8, add\_cc0:0 using 16 Con… --- ## [Save data to IQ file](https://www.ruby-forum.com/t/save-data-to-iq-file/243336)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [September 20, 2015, 6:36pm UTC](https://www.ruby-forum.com/t/save-data-to-iq-file/243336 "2015-09-20T18:36:44Z")
Hi I am using a signal source and want to save the data in file sink, but saved data is not recognizable. kindly help me --- ## [QPSK sample file](https://www.ruby-forum.com/t/qpsk-sample-file/243331)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [September 18, 2015, 4:45am UTC](https://www.ruby-forum.com/t/qpsk-sample-file/243331 "2015-09-18T04:45:23Z")
Hi everyone, I want to play with gnuradio QPSK decoding/analyzing capabilities. Can anybody point me to URL where I can download IQ samples file of a QPSK signal with reasonably strong real world signal for me to do m… [Previous page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=4) [Next page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=6)