# GNU Radio **URL:** https://www.ruby-forum.com/c/gnu-radio/15.md?page=70 [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:** 71 --- ## [Cmake problem](https://www.ruby-forum.com/t/cmake-problem/229969)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 3\ **Last updated:** [May 26, 2014, 2:12am UTC](https://www.ruby-forum.com/t/cmake-problem/229969 "2014-05-26T02:12:52Z")
Hi, I want to ask these questions about how to write cmake lists when we making gr-xxx projects (modules) with gr\_modtool: 1- How could I add dependencies of my project! For example I’m using a c++ library in one o… --- ## [GRC not working with B200, cannot locate firmware](https://www.ruby-forum.com/t/grc-not-working-with-b200-cannot-locate-firmware/229978)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 1\ **Last updated:** [May 25, 2014, 8:50pm UTC](https://www.ruby-forum.com/t/grc-not-working-with-b200-cannot-locate-firmware/229978 "2014-05-25T20:50:25Z")
I cannot get GRC to work with my B200. I have performed the steps here: http://code.ettus.com/redmine/ettus/projects/uhd/wiki/UHD\_Build Any suggestions? Thanks Using Volk machine: sse4\_2\_64 UHD Warning: Could not… --- ## [Checksum error installing from 'port install gnuradio +all'](https://www.ruby-forum.com/t/checksum-error-installing-from-port-install-gnuradio-all/229979)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 2\ **Last updated:** [May 25, 2014, 7:18pm UTC](https://www.ruby-forum.com/t/checksum-error-installing-from-port-install-gnuradio-all/229979 "2014-05-25T19:18:03Z")
Discuss-gnuradio mailing list removed\_email\_address@domain.invalid https://lists.gnu.org/mailman/listinfo/discuss-gnuradio --- ## [Avoid SSS printing](https://www.ruby-forum.com/t/avoid-sss-printing/229985)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 1\ **Last updated:** [May 25, 2014, 4:51pm UTC](https://www.ruby-forum.com/t/avoid-sss-printing/229985 "2014-05-25T16:51:36Z")
Hi All, I am running a program that prints information in console. In one machine I am getting a lot of ‘SSSSSSS’ and gets pretty annoying sometimes. I have read that this is related with overrun problem, however the … --- ## [Noutput\_items](https://www.ruby-forum.com/t/noutput-items/229981)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 2\ **Last updated:** [May 25, 2014, 10:55am UTC](https://www.ruby-forum.com/t/noutput-items/229981 "2014-05-25T10:55:08Z")
Hi, I’m confused about what is the return value of the work function if I have multiple output ports? I use produce() method to determine how many items produced on each port, so what does it mean to return again a… --- ## [Nagoya NA-773 Whip Wide-Band Mod for SDR](https://www.ruby-forum.com/t/nagoya-na-773-whip-wide-band-mod-for-sdr/229980)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 0\ **Last updated:** [May 25, 2014, 3:33am UTC](https://www.ruby-forum.com/t/nagoya-na-773-whip-wide-band-mod-for-sdr/229980 "2014-05-25T03:33:31Z")
I have seen a few messages asking about small, cheap antennas to use for portable SDRs, considering the RF bandwidths can span two decades. I found an SMA female, 12 telescoping whip and made a video showing how to r… --- ## [FS: bladeRF x40](https://www.ruby-forum.com/t/fs-bladerf-x40/229977)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 0\ **Last updated:** [May 25, 2014, 2:07am UTC](https://www.ruby-forum.com/t/fs-bladerf-x40/229977 "2014-05-25T02:07:57Z")
Hello all, Up for sale is a bladeRFx40 in excellent working condition, purchased last October. 1 x bladeRF x40 (bladeRF x40 - Nuand) 1 x USB 3.0 SS cable 1 x SMA cable 1 x Acrylic cover kit by SK Pang ( http://skp… --- ## [Maximum supported frequency](https://www.ruby-forum.com/t/maximum-supported-frequency/241275)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 5\ **Last updated:** [May 24, 2014, 10:51pm UTC](https://www.ruby-forum.com/t/maximum-supported-frequency/241275 "2014-05-24T22:51:28Z")
Hi everyone, I’m wondering about the maximum supported frequency in gnuradio, in fact, I want to model a UHF transmission chain, where the model concludes a simulation of the radio front end. Can I do it without wor… --- ## [(no subject)](https://www.ruby-forum.com/t/no-subject/229971)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 2\ **Last updated:** [May 24, 2014, 10:29pm UTC](https://www.ruby-forum.com/t/no-subject/229971 "2014-05-24T22:29:59Z")
Hi I am trying to establish a simple link between two USRPs. My flow graph is File\_Source-\>PSK\_MOD(BPSK)-\>USRP\_sink USRP\_Source-\>PSK\_Demod-\>pack\_k\_bits-\>File\_Sink. The received data is not matching with the source d… --- ## [Announcing NEWSDR Event in Boston on Friday June 6](https://www.ruby-forum.com/t/announcing-newsdr-event-in-boston-on-friday-june-6/229975)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 0\ **Last updated:** [May 24, 2014, 9:22pm UTC](https://www.ruby-forum.com/t/announcing-newsdr-event-in-boston-on-friday-june-6/229975 "2014-05-24T21:22:22Z")
Fourth-Annual \* \* New England Workshop on Software-Defined Radio \* NEWSDR 2014 \* … --- ## [Post Binary Slicer question](https://www.ruby-forum.com/t/post-binary-slicer-question/240727)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 14\ **Last updated:** [May 24, 2014, 6:27pm UTC](https://www.ruby-forum.com/t/post-binary-slicer-question/240727 "2014-05-24T18:27:07Z")
I have a question about handling data after binary slicing in the demodulation portion of handling a signal. Currently I am taking that data and pushing it through the Correlate Access Code block then into a file sin… --- ## [How to change a master clock rate on USRP B210](https://www.ruby-forum.com/t/how-to-change-a-master-clock-rate-on-usrp-b210/229956)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 1\ **Last updated:** [May 24, 2014, 9:26am UTC](https://www.ruby-forum.com/t/how-to-change-a-master-clock-rate-on-usrp-b210/229956 "2014-05-24T09:26:27Z")
Hello All Gnu Radio user, To use a 2 TX, I want to change a clock rate to an accepted one, under 30.72 MHz. I use the API with uhd\_usrp\_probe and it works only for this command. Can you give me the idea or python code… --- ## [Removing the old version and Installing gnuradio 3.7 on USRP E 110](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 8\ **Last updated:** [May 24, 2014, 6:58am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108 "2014-05-24T06:58:58Z")
Hi, I’m working on USRP E 110 card in order to implement OFDM channel on it. In fact, I would like to remove the old version of gnuradio installed in USRP E 110. Then, I would like to install gnuradio 3.7.4 on USRP E… --- ## [Window-close not killing everything](https://www.ruby-forum.com/t/window-close-not-killing-everything/234773)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [May 23, 2014, 7:15pm UTC](https://www.ruby-forum.com/t/window-close-not-killing-everything/234773 "2014-05-23T19:15:29Z")
I have a user of “simple\_ra” that has an issue with pieces of it still running after they use the “window close” button. In particular, there’s an XMLRPC server thread that gets left behind. On my own, Fedora 14, sy… --- ## [Problem of frame synchronization](https://www.ruby-forum.com/t/problem-of-frame-synchronization/229957)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 0\ **Last updated:** [May 23, 2014, 6:03pm UTC](https://www.ruby-forum.com/t/problem-of-frame-synchronization/229957 "2014-05-23T18:03:23Z")
Hi all, I am designing a QPSK transceiver using chunks to symbols and constellation decoder I have done the timing synchronization and carrier phase synchronization at receiver but I have some delay in my received da… --- ## [Gr-specest dependencies](https://www.ruby-forum.com/t/gr-specest-dependencies/229955)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 0\ **Last updated:** [May 23, 2014, 5:43pm UTC](https://www.ruby-forum.com/t/gr-specest-dependencies/229955 "2014-05-23T17:43:05Z")
There are several dependencies for gr-specest not included in the recipe for pybombs and some not listed in the gr-specest list of dependencies but implied by the text. The recipe for gr-specest in pybombs doesn’t i… --- ## [Error while building 3.7.3 on RHEL6](https://www.ruby-forum.com/t/error-while-building-3-7-3-on-rhel6/241017)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 17\ **Last updated:** [May 23, 2014, 5:12pm UTC](https://www.ruby-forum.com/t/error-while-building-3-7-3-on-rhel6/241017 "2014-05-23T17:12:17Z")
Hi all guys, I have again prob;lem building new version of gnuradio on my RHEL6 machine. The error is following: \[ 26%\] Building CXX object gr-blocks/lib/CMakeFiles/gnuradio-blocks.dir/message\_strobe\_random\_impl.cc.… --- ## [Tx\_ofdm](https://www.ruby-forum.com/t/tx-ofdm/241305)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 6\ **Last updated:** [May 23, 2014, 12:09pm UTC](https://www.ruby-forum.com/t/tx-ofdm/241305 "2014-05-23T12:09:02Z")
Hi everyone: I have already understand most part of the tx\_ofdm.grc.But the some digital i can’t calculate accurately. 1.stream\_to\_tagged\_stream: Packet length=96 bytes.? 2.And ofdm\_carrier\_allocator:FFT\_length=64(… --- ## [Cannot import gnuradio!](https://www.ruby-forum.com/t/cannot-import-gnuradio/241300)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 3\ **Last updated:** [May 23, 2014, 11:00am UTC](https://www.ruby-forum.com/t/cannot-import-gnuradio/241300 "2014-05-23T11:00:28Z")
Hi everyone, Finally, I’ve succeded to install the gnuradio 3.7.3 on fedora 20, even if it was my second time that I build it on fedora 20 ! However, I’ve one more issue which concerns the importation of gnuradio, I … --- ## [How can we adjust the ADC rate in usrp2 in ofdm benchmark example?](https://www.ruby-forum.com/t/how-can-we-adjust-the-adc-rate-in-usrp2-in-ofdm-benchmark-example/229943)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 1\ **Last updated:** [May 23, 2014, 10:45am UTC](https://www.ruby-forum.com/t/how-can-we-adjust-the-adc-rate-in-usrp2-in-ofdm-benchmark-example/229943 "2014-05-23T10:45:37Z")
Hi guy, Thanks in advance. I am a new comer to gnuradio. Now I am handling the project based on ofdm benchmark. I want to down-sample ADC to 2M/s(default is 100M/s) to capture the low frequency signal, 1Mhz in our ca… --- ## [Howto example error](https://www.ruby-forum.com/t/howto-example-error/229945)
**Author:** [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Replies:** 2\ **Last updated:** [May 23, 2014, 3:27am UTC](https://www.ruby-forum.com/t/howto-example-error/229945 "2014-05-23T03:27:20Z")
Hi, I’m playing with the howto example as shown by the following link on a Macbook Pro machine. http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModules I can go until $make. When I run $make test, an erro… --- ## [Decoding TDF's Phase Modulated Time Signal](https://www.ruby-forum.com/t/decoding-tdfs-phase-modulated-time-signal/241309)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [May 22, 2014, 9:32pm UTC](https://www.ruby-forum.com/t/decoding-tdfs-phase-modulated-time-signal/241309 "2014-05-22T21:32:54Z")
Hi Folks, I am continuing with developing my SDR radio clocks. TDF uses Phase Modulation (Details Here\[1\] and Here \[2\]), and I’m coming up against my limits of understanding, so am after some pointers or at least con… --- ## [Error building with new ZMQ](https://www.ruby-forum.com/t/error-building-with-new-zmq/241218)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 6\ **Last updated:** [May 22, 2014, 3:33pm UTC](https://www.ruby-forum.com/t/error-building-with-new-zmq/241218 "2014-05-22T15:33:52Z")
In MacPorts, the header is installed as “zmq.h”, not “zmq.hpp”. I can easily fix this if somebody else doesn’t want to / if I need to, but I have a lot on my queue right now. I’m just disabling ZMQ in the MacPorts i… --- ## [Control Port: Usage](https://www.ruby-forum.com/t/control-port-usage/241294)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [May 22, 2014, 3:25pm UTC](https://www.ruby-forum.com/t/control-port-usage/241294 "2014-05-22T15:25:12Z")
Hi to all. I am a bit new to the usage of GNU Radio. I was trying to get Control Port working for my setup but faced an issue. While using Control Port, we have to provide an IP address and port as an argument. I ha… --- ## [GNU Radio discussion in Poland](https://www.ruby-forum.com/t/gnu-radio-discussion-in-poland/241296)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [May 22, 2014, 3:22pm UTC](https://www.ruby-forum.com/t/gnu-radio-discussion-in-poland/241296 "2014-05-22T15:22:39Z")
I’m going to be in Krakow on Friday and Saturday. If anyone is interested in getting together to discuss USRPs or GNU Radio over food and/or drinks, send me an email. I’m also giving a talk on Friday morning at AGH… --- ## [Acquisition of datas from usrp e110](https://www.ruby-forum.com/t/acquisition-of-datas-from-usrp-e110/241295)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [May 22, 2014, 1:20pm UTC](https://www.ruby-forum.com/t/acquisition-of-datas-from-usrp-e110/241295 "2014-05-22T13:20:00Z")
Hi for everybody, What is the recommended tool for acquisition of datas from usrp e 110 ? Best regards, Wafa HAJ HMIDA --- ## [PyBOMBS installed gnuradio: uhd\_usrp\_sink not found](https://www.ruby-forum.com/t/pybombs-installed-gnuradio-uhd-usrp-sink-not-found/241263)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 5\ **Last updated:** [May 22, 2014, 11:58am UTC](https://www.ruby-forum.com/t/pybombs-installed-gnuradio-uhd-usrp-sink-not-found/241263 "2014-05-22T11:58:05Z")
After installing gnuradio using PyBOMBS, the USRP Sink and Source blocks are unavailable. Below is the message: 1). To verify uhd has been installed: \[03:25pm\] activecat@rs: ~/download/gnuradio/pybombs $ ./pybombs i… --- ## [PyBOMBS install gnuradio 3.7.4](https://www.ruby-forum.com/t/pybombs-install-gnuradio-3-7-4/241237)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 6\ **Last updated:** [May 22, 2014, 11:24am UTC](https://www.ruby-forum.com/t/pybombs-install-gnuradio-3-7-4/241237 "2014-05-22T11:24:11Z")
I’ve just reinstalled gnuradio yesterday, using PyBOMBS. The newly installed version is gnuradio 3.7.4. The installation succeeded, but it then failed to compile my custom module which worked flawlessly with previou… --- ## [Announcing NEWSDR in Boston on Friday June 6](https://www.ruby-forum.com/t/announcing-newsdr-in-boston-on-friday-june-6/241278)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [May 22, 2014, 6:46am UTC](https://www.ruby-forum.com/t/announcing-newsdr-in-boston-on-friday-june-6/241278 "2014-05-22T06:46:05Z")
Fourth-Annual \* \* New England Workshop on Software-Defined Radio \* NEWSDR 2014 \* … --- ## [gr-LTE freq sync and constellation plot](https://www.ruby-forum.com/t/gr-lte-freq-sync-and-constellation-plot/241285)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 0\ **Last updated:** [May 22, 2014, 6:36am UTC](https://www.ruby-forum.com/t/gr-lte-freq-sync-and-constellation-plot/241285 "2014-05-22T06:36:06Z")
Hello, I have captured IQ samples using USRP N210 and saved it as .dat file but when i gave it as input to gr-lte its not decoding.It shows like sync\_ffofrac\_lte\_sync\_frequency\_c\_0 ASYNC! new offset = 3426 old off… [Previous page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=69) [Next page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=71)