# GNU Radio **URL:** https://www.ruby-forum.com/c/gnu-radio/15.md?page=55 [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:** 56 --- ## [Summing members of a vector](https://www.ruby-forum.com/t/summing-members-of-a-vector/231664)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 2\ **Last updated:** [August 24, 2014, 12:47pm UTC](https://www.ruby-forum.com/t/summing-members-of-a-vector/231664 "2014-08-24T12:47:20Z")
I am trying to find a block in the gnuradio-companion 3.7.3 that will allow me to sum the members of a vector. The example wouldbe that I have a complex to mag block with a vector length of 64 output that is being con… --- ## [Power squelch with hysteresis thresholding](https://www.ruby-forum.com/t/power-squelch-with-hysteresis-thresholding/231700)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 24, 2014, 12:41pm UTC](https://www.ruby-forum.com/t/power-squelch-with-hysteresis-thresholding/231700 "2014-08-24T12:41:41Z")
Hello, This is a suggestion to modify the power squelch block to support hysteresis thresholding as it would be extremely useful in some applications. Best regards, Mzahermhz --- ## [Problem linking volk gnuradio3.7.4](https://www.ruby-forum.com/t/problem-linking-volk-gnuradio3-7-4/231697)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 24, 2014, 7:10am UTC](https://www.ruby-forum.com/t/problem-linking-volk-gnuradio3-7-4/231697 "2014-08-24T07:10:24Z")
Hi all, I have gnuradio-3.7.3 working fine with boost-1.50 on ubuntu 12.04, and I’m using USRP B200 with uhd3.7, all built from source. Now I’m moving to gnuradio-3.7.4, but I got the following error linking volk, at … --- ## [Simple\_ra/gr-ra\_blocks updated for GR3.7](https://www.ruby-forum.com/t/simple-ra-gr-ra-blocks-updated-for-gr3-7/240201)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [August 23, 2014, 4:41pm UTC](https://www.ruby-forum.com/t/simple-ra-gr-ra-blocks-updated-for-gr3-7/240201 "2014-08-23T16:41:50Z")
I’ve updated simple\_ra and gr-ra\_blocks for GR3.7. NOT extensively tested And when building gr-ra\_blocks, your PKG\_CONFIG\_PATH had better include /usr/local/lib:/usr/local/lib64 prior to doing the “cmake”. – Marcus… --- ## [Problem linking volk gnuradio-3.7.4](https://www.ruby-forum.com/t/problem-linking-volk-gnuradio-3-7-4/231693)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 23, 2014, 3:07pm UTC](https://www.ruby-forum.com/t/problem-linking-volk-gnuradio-3-7-4/231693 "2014-08-23T15:07:05Z")
Hi all, I have gnuradio-3.7.3 working fine with boost-1.50 on ubuntu 12.04, and I’m using USRP B200 with uhd3.7, all built from source. Now I’m moving to gnuradio-3.7.4, but I got the following error linking wolk, at … --- ## [Problem linking volk gnuradio3.7.4](https://www.ruby-forum.com/t/problem-linking-volk-gnuradio3-7-4/231689)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 23, 2014, 11:56am UTC](https://www.ruby-forum.com/t/problem-linking-volk-gnuradio3-7-4/231689 "2014-08-23T11:56:25Z")
Hi all, I have gnuradio-3.7.3 working fine with boost-1.50 on ubuntu 12.04, and I’m using USRP B200 with uhd3.7, all built from source. Now I’m moving to gnuradio-3.7.4, but I got the following error linking wolk, at … --- ## [Dropped stream tags with mm & pfb clock recovery/sync blocks](https://www.ruby-forum.com/t/dropped-stream-tags-with-mm-pfb-clock-recovery-sync-blocks/231666)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 5\ **Last updated:** [August 22, 2014, 10:46pm UTC](https://www.ruby-forum.com/t/dropped-stream-tags-with-mm-pfb-clock-recovery-sync-blocks/231666 "2014-08-22T22:46:34Z")
Hi, I’ve got some issues with two of the clock sync/recovery blocks shipped in the gr-digital package (maint) regarding stream tag propagation/non deterministic behavior. I use a file\_source block to read previously … --- ## [X310 firmware questions](https://www.ruby-forum.com/t/x310-firmware-questions/231678)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 3\ **Last updated:** [August 22, 2014, 7:01pm UTC](https://www.ruby-forum.com/t/x310-firmware-questions/231678 "2014-08-22T19:01:03Z")
Hi, I have two questions about X310 firmware, please. I want to use two 10GigE ports, so need the XGS image. When I download this with uhd\_images\_downloader.py, I get the error that indicates a firmware mismatch … --- ## [Re: Cmake error](https://www.ruby-forum.com/t/re-cmake-error/231674)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 22, 2014, 11:17am UTC](https://www.ruby-forum.com/t/re-cmake-error/231674 "2014-08-22T11:17:19Z")
Thanks for the comment. I updated my GNURadio to 3.7.4 and new module installation went well. Thanks once again. Sreena --- ## [Measurement toolbox: A few screenshots](https://www.ruby-forum.com/t/measurement-toolbox-a-few-screenshots/231670)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 22, 2014, 6:21am UTC](https://www.ruby-forum.com/t/measurement-toolbox-a-few-screenshots/231670 "2014-08-22T06:21:57Z")
\-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello fellow GNU Radio enthusiasts, it was long due I finally shared a few screenshots of the user interface part of my GSoC project: http://gsoc.hostalia.de/posts/runni… --- ## [Parsing extra metadata](https://www.ruby-forum.com/t/parsing-extra-metadata/231623)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 3\ **Last updated:** [August 22, 2014, 1:19am UTC](https://www.ruby-forum.com/t/parsing-extra-metadata/231623 "2014-08-22T01:19:53Z")
Hello, I am trying to add some extra information to the standard metadata file header. Following the information posted on http://gnuradio.org/doc/doxygen/page\_metadata.html , I am able to write and read the standar… --- ## [Interesting Discussion on SDR](https://www.ruby-forum.com/t/interesting-discussion-on-sdr/231660)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 21, 2014, 9:48pm UTC](https://www.ruby-forum.com/t/interesting-discussion-on-sdr/231660 "2014-08-21T21:48:30Z")
http://www.altera.com/technology/system-design/articles/2014/software-define d-radio-openradio.html?utm\_source=altera&utm\_medium=email&utm\_campaign=syste m\_design\_journal&utm\_content=&elq=9da82267f3ce42d08181e5a21f8ec5… --- ## [GR Con 14 "Sold Out" - Use Waitlist to Get Ticket](https://www.ruby-forum.com/t/gr-con-14-sold-out-use-waitlist-to-get-ticket/231658)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 21, 2014, 7:25pm UTC](https://www.ruby-forum.com/t/gr-con-14-sold-out-use-waitlist-to-get-ticket/231658 "2014-08-21T19:25:08Z")
Eventbrite is showing the the GNU Radio Developer’s Conference has sold out. However, if you get on the waiting list early (in the next couple of days) there is high probability you will get a ticket as we de-duplica… --- ## [GR Dev Call August](https://www.ruby-forum.com/t/gr-dev-call-august/231657)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 21, 2014, 7:10pm UTC](https://www.ruby-forum.com/t/gr-dev-call-august/231657 "2014-08-21T19:10:29Z")
The dev call for August is on now, watch it live at: or join us on hangout or IRC. See ya, M --- ## [Noisy constellation Output](https://www.ruby-forum.com/t/noisy-constellation-output/231656)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 21, 2014, 5:21pm UTC](https://www.ruby-forum.com/t/noisy-constellation-output/231656 "2014-08-21T17:21:58Z")
Hi, I am new to GNU Radio but have noticed something… When I create a PSK modulated signal and output that to a constellation sink, why is the signal so noisy? Why is the signal not in four perfect constellation poin… --- ## [Compilation error gr-uhd](https://www.ruby-forum.com/t/compilation-error-gr-uhd/231636)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 2\ **Last updated:** [August 21, 2014, 2:19pm UTC](https://www.ruby-forum.com/t/compilation-error-gr-uhd/231636 "2014-08-21T14:19:16Z")
Hey All, I’ve run into some issues building gr-uhd. I have the UHD software from here: http://code.ettus.com/redmine/ettus/projects/uhd/wiki/UHD\_Linux And, can run basic tests like “uhd\_usrp\_probe” and “uhd\_find\_devic… --- ## [Cmake error](https://www.ruby-forum.com/t/cmake-error/231649)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 21, 2014, 11:37am UTC](https://www.ruby-forum.com/t/cmake-error/231649 "2014-08-21T11:37:47Z")
Hi I tried to implement python OOT module as given in the new tutorial. Everything was fine till I reached the installation step. cmake command made the following error… – Build type not specified: defaulting to rele… --- ## [Re: compilation error gr-uhd](https://www.ruby-forum.com/t/re-compilation-error-gr-uhd/231643)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 20, 2014, 7:33pm UTC](https://www.ruby-forum.com/t/re-compilation-error-gr-uhd/231643 "2014-08-20T19:33:59Z")
Hey Marcus, and anyone else, I tried that clean and then remaking, and nothing changed. Any other suggestions? Thanks, Ryan M. (sorry to resend, forgot to get the correct subject in there) --- ## [(no subject)](https://www.ruby-forum.com/t/no-subject/231644)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 20, 2014, 7:17pm UTC](https://www.ruby-forum.com/t/no-subject/231644 "2014-08-20T19:17:32Z")
Hey Marcus, and anyone else, I tried that clean and then remaking, and nothing changed. Any other suggestions? Thanks, Ryan M. Hi Ryan, I think this is a swig issue. I don’t really know why, but often a make clea… --- ## [Problem in boost in Windows 8 OS](https://www.ruby-forum.com/t/problem-in-boost-in-windows-8-os/231566)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 20, 2014, 3:34pm UTC](https://www.ruby-forum.com/t/problem-in-boost-in-windows-8-os/231566 "2014-08-20T15:34:28Z")
Dear all I have tried to install the out of tree module “howto” (the code is attached) in the Gnuradio. However, it seems that “boost” software is not working correctly (I DO NOT KNOW WHY?). http://gnuradio.org/redmi… --- ## [Mp\_sched example problems](https://www.ruby-forum.com/t/mp-sched-example-problems/231635)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 20, 2014, 3:09pm UTC](https://www.ruby-forum.com/t/mp-sched-example-problems/231635 "2014-08-20T15:09:27Z")
Hi everybody, I’m having some problems with benachmark testing (MP\_Sched) in Gnuradio 3.7.2.1 running on Ubuntu 14.04. So, two questions: When I try to plot the example in /usr/share/gnuradio/examples/mp-sched there… --- ## [Post for mailing list](https://www.ruby-forum.com/t/post-for-mailing-list/231629)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 20, 2014, 10:17am UTC](https://www.ruby-forum.com/t/post-for-mailing-list/231629 "2014-08-20T10:17:50Z")
hey. I am trying to synchronize transmissions from multiply relays using gnuradio and usrp b200 radios. I would prefer to achieve this in GRC but i cannot figure out how to to do this. If it is not possible in GRC, th… --- ## [Difference between general block and sync block](https://www.ruby-forum.com/t/difference-between-general-block-and-sync-block/231625)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 20, 2014, 10:09am UTC](https://www.ruby-forum.com/t/difference-between-general-block-and-sync-block/231625 "2014-08-20T10:09:57Z")
Hello! What is the difference between a general block 1: 1 and a sync block? --- ## [\[GSoC\] Co-Processors Update #10](https://www.ruby-forum.com/t/gsoc-co-processors-update-10/231607)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 20, 2014, 9:46am UTC](https://www.ruby-forum.com/t/gsoc-co-processors-update-10/231607 "2014-08-20T09:46:50Z")
Hello all, Logistical: Pencils down is upon us so the rest of the week will be spent on getting all my documentation in order. This includes cleaning the code on github, keystone2 wiki page http://gnuradio.org/re… --- ## [USRP configuration and setup requirment for 2.6Ghz Dynamic spectrum allocation](https://www.ruby-forum.com/t/usrp-configuration-and-setup-requirment-for-2-6ghz-dynamic-spectrum-allocation/231558)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 2\ **Last updated:** [August 20, 2014, 1:53am UTC](https://www.ruby-forum.com/t/usrp-configuration-and-setup-requirment-for-2-6ghz-dynamic-spectrum-allocation/231558 "2014-08-20T01:53:29Z")
Hi, I am planning to buy 2 sets of USRP for my research ( Dynamic spectrum allocation for 2.6Ghz LTE-A ). what will be the specification of USRP for this research ? Please help me regarding USRP specification inclu… --- ## [Data type in the output of the source](https://www.ruby-forum.com/t/data-type-in-the-output-of-the-source/231622)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 19, 2014, 9:58pm UTC](https://www.ruby-forum.com/t/data-type-in-the-output-of-the-source/231622 "2014-08-19T21:58:02Z")
Hi Guys, I have a new question about the type of the data in the output of the source (RTL2832). The signal is represented with complex numbers! why? What do this complex numbers means physically? In my head the dat… --- ## [Tracking PLL phase error](https://www.ruby-forum.com/t/tracking-pll-phase-error/231603)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 19, 2014, 7:24pm UTC](https://www.ruby-forum.com/t/tracking-pll-phase-error/231603 "2014-08-19T19:24:53Z")
Hello, I’m using the gr::analog::pll\_carriertracking\_cc() block to track a very stable signal of which I don’t know the exact frequency and of which I want to detect (small!) phase oscillations. In my tests I discove… --- ## [Other block as parameter in GRC](https://www.ruby-forum.com/t/other-block-as-parameter-in-grc/231616)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 6\ **Last updated:** [August 19, 2014, 5:53pm UTC](https://www.ruby-forum.com/t/other-block-as-parameter-in-grc/231616 "2014-08-19T17:53:16Z")
Hi, how can I pass an other block from my flowgraph to a self written block in the gnuradio-companion? What I want to do is invoking a method of that passed block in my own one (or maybe there’s an other way to do th… --- ## [Branch for Testing Parallel Build Issue](https://www.ruby-forum.com/t/branch-for-testing-parallel-build-issue/231608)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [August 19, 2014, 5:48pm UTC](https://www.ruby-forum.com/t/branch-for-testing-parallel-build-issue/231608 "2014-08-19T17:48:24Z")
\< https://github.com/jmcorgan/gnuradio/tree/fix-parallel-build \> The goal of this branch is to fix the parallel build issue that’s been plaguing GNU Radio’s CMake build system pretty much since day 1. The shortest ex… --- ## [Fcdproplus (Funcube Pro Plus) Module?](https://www.ruby-forum.com/t/fcdproplus-funcube-pro-plus-module/231610)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [August 19, 2014, 12:27am UTC](https://www.ruby-forum.com/t/fcdproplus-funcube-pro-plus-module/231610 "2014-08-19T00:27:17Z")
Greetings Marcus, Thank you for your prompt response and assistance! Once I knew that it was looking for a software module I realized I probably specified the wrong location for the fcdproplus module installation.… [Previous page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=54) [Next page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=56)