# GNU Radio **URL:** https://www.ruby-forum.com/c/gnu-radio/15.md?page=79 [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:** 80 --- ## [Installing UHD and GR373 on Mint13](https://www.ruby-forum.com/t/installing-uhd-and-gr373-on-mint13/240365)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [April 10, 2014, 8:53pm UTC](https://www.ruby-forum.com/t/installing-uhd-and-gr373-on-mint13/240365 "2014-04-10T20:53:03Z")
Hi, I am trying to install UHD and GR373 on Linux Mint13. I follow http://code.ettus.com/redmine/ettus/projects/uhd/wiki/GNURadio\_Linux When I run: sudo apt-get install -t precise uhd I get an error: uhd : Depends:… --- ## [GnuRadio / Ettus Consultants?](https://www.ruby-forum.com/t/gnuradio-ettus-consultants/240378)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 0\ **Last updated:** [April 10, 2014, 7:23pm UTC](https://www.ruby-forum.com/t/gnuradio-ettus-consultants/240378 "2014-04-10T19:23:07Z")
I hope this isn’t bad form for the lists, but this skill set is proving difficult to find through other channels. Is there a good place to find people with GnuRadio / UHD / Ettus hardware experience? And if you are a… --- ## [Re: Mixing two signals for Radar application](https://www.ruby-forum.com/t/re-mixing-two-signals-for-radar-application/240377)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [April 10, 2014, 5:01pm UTC](https://www.ruby-forum.com/t/re-mixing-two-signals-for-radar-application/240377 "2014-04-10T17:01:12Z")
Thank you Marcus and the others for your inputs, I created the flow almost from scratch taking into consideration your words and I came up to this aspect. Here they are: http://imageshack.com/a/img855/7555/7qcr.png … --- ## [Fwd: Problem with getting clear FM signals using the usrp e110](https://www.ruby-forum.com/t/fwd-problem-with-getting-clear-fm-signals-using-the-usrp-e110/240356)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 4\ **Last updated:** [April 10, 2014, 4:02pm UTC](https://www.ruby-forum.com/t/fwd-problem-with-getting-clear-fm-signals-using-the-usrp-e110/240356 "2014-04-10T16:02:48Z")
Here are some pointers for you: Firstly, your screenshot shows the error message saying that the RX frequency is not valid. I’d recommend using a WBX daughterboard, however the BasicRX should still work with strong F… --- ## [GNURadio runtime not found? (Ubuntu 14.04)](https://www.ruby-forum.com/t/gnuradio-runtime-not-found-ubuntu-14-04/240371)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 7\ **Last updated:** [April 10, 2014, 10:41am UTC](https://www.ruby-forum.com/t/gnuradio-runtime-not-found-ubuntu-14-04/240371 "2014-04-10T10:41:34Z")
So, first thing’s first: GNR version: 3.7.2.1 (from apt) Ubuntu ver. 14.04 cmake ver: 2.8 …Now, I attempting to build gr-drm and it spits out this error on cmake …/ – checking for module ‘gnuradio-runtime’-- … --- ## [Arch Linux WXGUI Support (GNR3.7)](https://www.ruby-forum.com/t/arch-linux-wxgui-support-gnr3-7/240337)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 3\ **Last updated:** [April 10, 2014, 8:40am UTC](https://www.ruby-forum.com/t/arch-linux-wxgui-support-gnr3-7/240337 "2014-04-10T08:40:04Z")
There has been an issue for some months now in the latest build of gnuradio from the AUR. It does not build, nor can run the WX/QT GUI modules. I have had to downgrade some packages to make an older version of GNR wo… --- ## [The use of GNU radio](https://www.ruby-forum.com/t/the-use-of-gnu-radio/240372)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [April 10, 2014, 7:47am UTC](https://www.ruby-forum.com/t/the-use-of-gnu-radio/240372 "2014-04-10T07:47:36Z")
Hi all, I am new to GNU radio and currently conduct research on 802.11 wireless communication. I could like to make use of Software Defined Radio (SDR), to perform wireless transmission over radio frequency, as a mod… --- ## [Updated docs on the website](https://www.ruby-forum.com/t/updated-docs-on-the-website/240361)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [April 9, 2014, 5:08pm UTC](https://www.ruby-forum.com/t/updated-docs-on-the-website/240361 "2014-04-09T17:08:55Z")
Just a quick FYI, I regenerated the 3.7.3 docs based on some updates from Martin B. to add a few new features to the manual. In particular, I wanted to point out the new search bar. This makes it really easy to just … --- ## [Tips for improving file transfer data loss](https://www.ruby-forum.com/t/tips-for-improving-file-transfer-data-loss/240332)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [April 9, 2014, 3:26pm UTC](https://www.ruby-forum.com/t/tips-for-improving-file-transfer-data-loss/240332 "2014-04-09T15:26:40Z")
I’m looking for some tips on how to improve file transfer using two USRP’s. I understand the method I’m using might be fairly crude, but I’m just starting out. Problem is I’m dropping a lot of data out of the file (r… --- ## [Problem with getting clear FM signals using the usrp e110](https://www.ruby-forum.com/t/problem-with-getting-clear-fm-signals-using-the-usrp-e110/240320)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [April 9, 2014, 11:49am UTC](https://www.ruby-forum.com/t/problem-with-getting-clear-fm-signals-using-the-usrp-e110/240320 "2014-04-09T11:49:58Z")
Hello, I followed this tutorial to build a simple FM receiver: How To Build an FM Receiver with the USRP in Less Than 10 Minutes - YouTube am using the USRP e110,my problem is I am only getting noise.I tried to change… --- ## [Smith Chart in GNU Radio](https://www.ruby-forum.com/t/smith-chart-in-gnu-radio/240316)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [April 9, 2014, 4:26am UTC](https://www.ruby-forum.com/t/smith-chart-in-gnu-radio/240316 "2014-04-09T04:26:04Z")
Hi I am trying to figure out how to use smith chart as a sink in GNU Radio. I made an OOT (GitHub - mitul93/gr-smithchart: pyQT based smith chart for GNU Radio) using pyQT by following Tim O’shea’s work. It is merely… --- ## [How to stop "usrp\_spectrum\_sense.py"?](https://www.ruby-forum.com/t/how-to-stop-usrp-spectrum-sense-py/240140)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [April 9, 2014, 2:02am UTC](https://www.ruby-forum.com/t/how-to-stop-usrp-spectrum-sense-py/240140 "2014-04-09T02:02:13Z")
Hi Everyone, The “usrp\_spectrum\_sense.py” program is used to sense the defined spectrum range. Now, I want to stop it for a period of five second time (e.g. from 55 to 59 seconds). For that purpose, I wrote the foll… --- ## [FSK Demodulation trouble](https://www.ruby-forum.com/t/fsk-demodulation-trouble/240336)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [April 9, 2014, 12:36am UTC](https://www.ruby-forum.com/t/fsk-demodulation-trouble/240336 "2014-04-09T00:36:22Z")
Hello All, I am working on learning gnuradio and getting a grip on demodulating digital communications. I’ve been a ham for a long time, and this seems far from my days as a kid running 1200 baud half duplex AFSK. … --- ## [Using GRC without UHD](https://www.ruby-forum.com/t/using-grc-without-uhd/240325)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 5\ **Last updated:** [April 8, 2014, 7:19pm UTC](https://www.ruby-forum.com/t/using-grc-without-uhd/240325 "2014-04-08T19:19:14Z")
Hello GR, Are there any fake sink and source blocks which simulates the uhd sink and source. I would like to test some flow graphs but for the moment I don’t have access to the radios. Or is there any other option… --- ## [Re: Latest Hackfest (discussion on trellis and RA codes)](https://www.ruby-forum.com/t/re-latest-hackfest-discussion-on-trellis-and-ra-codes/240329)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [April 8, 2014, 6:33pm UTC](https://www.ruby-forum.com/t/re-latest-hackfest-discussion-on-trellis-and-ra-codes/240329 "2014-04-08T18:33:39Z")
Miklos and Tom, one option may be to merge the work that Miklos described with gr-trellis (or the other way around :-)) Recall there was a discussion in the recent past of volk-ing the basic trellis algorithms such … --- ## [Gr-air-modes broken in recent update?](https://www.ruby-forum.com/t/gr-air-modes-broken-in-recent-update/240306)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 5\ **Last updated:** [April 8, 2014, 3:50pm UTC](https://www.ruby-forum.com/t/gr-air-modes-broken-in-recent-update/240306 "2014-04-08T15:50:42Z")
Since a couple of days I cannot run gr-air-modes anymore (it used to work before). I am running gnuradio in an isolated build environment on XUbuntu 12.04 64bit. Here is the blurp from the crash: mark@aurora:~/apps/g… --- ## [BER and OFDM](https://www.ruby-forum.com/t/ber-and-ofdm/240307)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 6\ **Last updated:** [April 8, 2014, 2:44pm UTC](https://www.ruby-forum.com/t/ber-and-ofdm/240307 "2014-04-08T14:44:41Z")
Hello guys, I’m getting some problems to use the error rate on a ofdm system, i used the example ofdm\_loopback as base and add the error rate and number sink but there’s not any response, it doesn’t bring me any erro… --- ## [Re: Occasional choppiness/underruns (aUaU) with FCDPP-\>GRC-\>Pulse](https://www.ruby-forum.com/t/re-occasional-choppiness-underruns-auau-with-fcdpp-grc-pulse/240314)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [April 8, 2014, 12:35pm UTC](https://www.ruby-forum.com/t/re-occasional-choppiness-underruns-auau-with-fcdpp-grc-pulse/240314 "2014-04-08T12:35:01Z")
There doesn’t seem to be a system in place in gmail/mailman for replying to a list digest entry. Hope this works… Switching from ‘pulse’ to ‘sysdefault’ or leaving it blank appears to fix the issue but breaks pulsea… --- ## [Terminology Translation](https://www.ruby-forum.com/t/terminology-translation/240303)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 3\ **Last updated:** [April 8, 2014, 11:26am UTC](https://www.ruby-forum.com/t/terminology-translation/240303 "2014-04-08T11:26:06Z")
Being more of an implementer than a mathematical theorist, I’m having trouble “translating” the “language” spoken by our local Matlab/Simulink boffins. What’s the proper way to implement an “Integrate and Dump” opera… --- ## [OpenBTS internal clock (Ettus USRP B100)](https://www.ruby-forum.com/t/openbts-internal-clock-ettus-usrp-b100/240315)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [April 8, 2014, 10:16am UTC](https://www.ruby-forum.com/t/openbts-internal-clock-ettus-usrp-b100/240315 "2014-04-08T10:16:44Z")
Hi, I’ve got an Ettus USRP B100 device which can be configured to use an internal 52MHz clock to operate. However after compiling and testing OpenBTS, it uses 64MHz clockrate. Can anyone explain why that’s the case? … --- ## [Reminder: Call for Proposals for GRCon14](https://www.ruby-forum.com/t/reminder-call-for-proposals-for-grcon14/239488)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [April 8, 2014, 2:35am UTC](https://www.ruby-forum.com/t/reminder-call-for-proposals-for-grcon14/239488 "2014-04-08T02:35:16Z")
Greetings GNU Radio and USRP Communities, It has been a couple of weeks since the first announcement of GNU Radio Conference 2014 (GRCon14 \[0\]) \[1\], so I’m sending this email as a reminder for everyone interested in p… --- ## [Sheduler: do not consume all "input items" and return 0 "output items"](https://www.ruby-forum.com/t/sheduler-do-not-consume-all-input-items-and-return-0-output-items/240242)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 3\ **Last updated:** [April 7, 2014, 8:39pm UTC](https://www.ruby-forum.com/t/sheduler-do-not-consume-all-input-items-and-return-0-output-items/240242 "2014-04-07T20:39:32Z")
Discuss-gnuradio mailing list removed\_email\_address@domain.invalid https://lists.gnu.org/mailman/listinfo/discuss-gnuradio --- ## [Error in installing GNU Radio v3.7](https://www.ruby-forum.com/t/error-in-installing-gnu-radio-v3-7/240266)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 6\ **Last updated:** [April 7, 2014, 8:27pm UTC](https://www.ruby-forum.com/t/error-in-installing-gnu-radio-v3-7/240266 "2014-04-07T20:27:51Z")
Hi All, I am trying to install GNU Radio v3.7, but at 10% of my “make”, it shows the following error: Traceback (most recent call last): File “/raid/anb10/gnuradio\_3.7/build/python\_compile\_helper.py”, line 6, in … --- ## [Latest Hackfest](https://www.ruby-forum.com/t/latest-hackfest/240243)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 4\ **Last updated:** [April 7, 2014, 5:53pm UTC](https://www.ruby-forum.com/t/latest-hackfest/240243 "2014-04-07T17:53:38Z")
We had our latest GNU Radio Hackfest last week at Ettus R… It was a fantastic week with a lot of good work getting done. If you’re interested in what we are working on and to get a glimpse of some of the new things … --- ## [Error while running transceiver.py in 802.15.4 on GR 3.7](https://www.ruby-forum.com/t/error-while-running-transceiver-py-in-802-15-4-on-gr-3-7/240271)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 5\ **Last updated:** [April 7, 2014, 5:52pm UTC](https://www.ruby-forum.com/t/error-while-running-transceiver-py-in-802-15-4-on-gr-3-7/240271 "2014-04-07T17:52:27Z")
Hello GR, Did anyone encountered such an error while running the transceiver.py script of 802.15.4 on GR 3.7 thread\[thread-per-block\[20\]: \\]: tagged stream does not contain a pdu\_leng… --- ## [Clock recovery in HRPT receiver](https://www.ruby-forum.com/t/clock-recovery-in-hrpt-receiver/240298)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [April 7, 2014, 4:57pm UTC](https://www.ruby-forum.com/t/clock-recovery-in-hrpt-receiver/240298 "2014-04-07T16:57:30Z")
Hi, I am checking the HRPT receiver available in gr-noaa repository and I don’t understand the parameters of the Clock Recovery block with the information available about the HRPT format. I roughly know how that blo… --- ## [Occasional choppiness/underruns (aUaU) with FCDPP-\>GRC-\>Pulse](https://www.ruby-forum.com/t/occasional-choppiness-underruns-auau-with-fcdpp-grc-pulse/240284)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [April 7, 2014, 1:57pm UTC](https://www.ruby-forum.com/t/occasional-choppiness-underruns-auau-with-fcdpp-grc-pulse/240284 "2014-04-07T13:57:37Z")
Hello list, I need some help. When running GRC 3.6.1 I am getting a problem with occasional choppiness in my audio output. Details: The choppiness sounds like only part of the buffer is filling, similar to the sou… --- ## [Occasional choppiness/underruns (aUaU) with FCDPP-\>GRC-\>Pulse](https://www.ruby-forum.com/t/occasional-choppiness-underruns-auau-with-fcdpp-grc-pulse/240297)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 0\ **Last updated:** [April 7, 2014, 1:31pm UTC](https://www.ruby-forum.com/t/occasional-choppiness-underruns-auau-with-fcdpp-grc-pulse/240297 "2014-04-07T13:31:55Z")
Chuck, In most cases the problem comes from ALSA. If you’re able to change ALSA to something else, try to change it. If you can’t change your default sound driver then you may try using “-Dplug:default” option for a… --- ## [Installing via PyBombs](https://www.ruby-forum.com/t/installing-via-pybombs/240286)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [April 6, 2014, 8:37pm UTC](https://www.ruby-forum.com/t/installing-via-pybombs/240286 "2014-04-06T20:37:19Z")
Hello… new user here. I need to know what do next. There is no GRC icon after the install. Any help would be great. Thanks. I ran the following on a very fresh install of Ubuntu LTS. sudo apt-get install git git… --- ## [Dealing with TX/RX cross-talk on USRP](https://www.ruby-forum.com/t/dealing-with-tx-rx-cross-talk-on-usrp/240281)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [April 6, 2014, 1:14am UTC](https://www.ruby-forum.com/t/dealing-with-tx-rx-cross-talk-on-usrp/240281 "2014-04-06T01:14:27Z")
I’m looking for tips on how to deal with the USRP TX/RX leakage. I’m transmitting with 30db (max) gain while trying to measure RSSI on the RX2 channel and experiencing about 40db of energy leakage from the TX/RX. My … [Previous page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=78) [Next page](https://www.ruby-forum.com/c/gnu-radio/15.md?page=80)