[Discuss-gnuradio] GRCon15 Videos are Live!

For those of you who couldn't make it to GRCo15, we recorded the videos this year. And thanks to Jose Loera, we've got them ready and available in a timely manner. You can use the Agenda page to find any talk you're interested in and click to get more information. There is a "Presentations" link

Re: [Discuss-gnuradio] audio underrun when bad signal quality

Hi Marcus, I have been reading from you more frequently on this list than you've been reading from me :-) I have my setup in my office computer, so I will send the setup to this list tomorrow. Thanks ahead! vy73 markus dl8rds Am Dienstag, den 22.09.2015, 19:56 +0200 schrieb Marcus Müller: >

Re: [Discuss-gnuradio] audio underrun when bad signal quality

no, there is no squelch 73s markus Am Dienstag, den 22.09.2015, 10:56 -0700 schrieb Martin Braun: > Do you have a sqelch anywhere in your flow graph? > > M > > On 22.09.2015 09:34, Markus Heller wrote: > > Hi, > > > > playing around with my RTLSDR stick (RTL2832U / Rafael Micro R820T > >

Re: [Discuss-gnuradio] Fwd: Re: Transmission error

Ok, > This is because I have changed my folder to /digital/ofdm, I have > started to receive packets. this means that you're using something *completely* different than before. It's simply a completely different transceiver system. > kindly advise if I need to figure out the combination settings

Re: [Discuss-gnuradio] Chips from Nooelec R820T2

There will be an RTL2832U, made by RealTek. Its job is to digitize the output from the tuner, and down-sample, and put it on the USB bus. There's also an R820T2, which is the downconverter/tuner that converts to a real IF around (AFIR) 3.57MHz. There'll also be a voltage regulator or two,

Re: [Discuss-gnuradio] GNU Radio installation script

Actually I just checked and it is in the build-gnuradio script now. It wasn't there at the end of July or beginning of August when I ran into the problem and it prevented the script from installing UHD and thus the actual GNU Radio installation. -Peter- On 9/22/2015 10:19 AM,

[Discuss-gnuradio] audio underrun when bad signal quality

Hi, playing around with my RTLSDR stick (RTL2832U / Rafael Micro R820T tuner) I observed that whenever the reception (signal quality) is bad, I am getting Audio Underruns and glitches in the accoustics. How can that happen? I always thought the sample rate was constant? When designing the

Re: [Discuss-gnuradio] audio underrun when bad signal quality

Hi Markus, nice to be hearing from you! I'm making assumptions about your RX flow graph here: osmocom source --> squelch of some sort --> FM demod/ AM demod of sorts --> Audio sink If the squelch is set to stop the flow of samples as long as there's not enough signal, then downstream, the

[Discuss-gnuradio] GNU Radio Conference 2015, RF Network-on-a-Chip, and New Public Courses

View this email in your browser GNU Radio Conference 2015 Recap Corgan Labs and the rest of the GNU Radio Conference 2015 team are extremely proud to report that GRCon15 was a major success. Compared to 2014, attendance

Re: [Discuss-gnuradio] audio underrun when bad signal quality

Do you have a sqelch anywhere in your flow graph? M On 22.09.2015 09:34, Markus Heller wrote: > Hi, > > playing around with my RTLSDR stick (RTL2832U / Rafael Micro R820T > tuner) I observed that whenever the reception (signal quality) is bad, I > am getting Audio Underruns and glitches in the

[Discuss-gnuradio] Chips from Nooelec R820T2

Dear all, I have a Nooelec R820T2 and inside of it there are two chips: 2838 and 2832U. I'd like to know what is the function of each one. I've looking for this, but I'd like to hear from you in general terms. Thank you. -- Cheers, Pedro Gabriel Adami

Re: [Discuss-gnuradio] AGC_FF Code Implementation

Thank you for that. Clear now. Rich On Tue, Sep 22, 2015 at 7:05 AM, Tom Rondeau wrote: > On Mon, Sep 21, 2015 at 9:03 PM, Richard Bell > wrote: > >> Hello all, >> >> I would like to see how agc_ff is implemented, but there is some gnuradio >> magic

Re: [Discuss-gnuradio] RFNoc and data rates

On 09/22/2015 06:07 PM, Simon Olvhammar wrote: Hello, I have a question regarding RFnoc and the USRP x310 FPGA capabilities. We currently have a working GnuRadio application used for astronomy observations and are looking to get several more devices for integration in other systems. However

[Discuss-gnuradio] Convert raw I/Q to dB

Hello, Everyone i am new to gnuradio and I am creating a block to "Convert raw I / Q to dBm" I have: USRP Source -> Stream_to_vector-> FFT-> Complex_to_MAg * 2-> NEW_BLOCK, so is the sequence ?? Thanks, Mathias ___ Discuss-gnuradio mailing list

[Discuss-gnuradio] RFNoc and data rates

Hello, I have a question regarding RFnoc and the USRP x310 FPGA capabilities. We currently have a working GnuRadio application used for astronomy observations and are looking to get several more devices for integration in other systems. However the data rates are high and CPU loads as well,

Re: [Discuss-gnuradio] GNU Radio installation script

I ran the mako template as suggested and the output indicated it was already up-to-date. I'm still looking back through this chain since it seem there are a lot of options Mike On Sep 22, 2015 11:35 AM, "Peter Mathys" wrote: > As noted elsewhere the failure to find

Re: [Discuss-gnuradio] GNU Radio installation script

Hrrrm, I was pretty-sure that I'd made that update some time ago. I'll have to check my master copy when I get home. On 2015-09-22 11:08, Peter Mathys wrote: > As noted elsewhere the failure to find libzmq1-dev is expected (what is > needed is libzmq-dev) and does not affect the outcome

Re: [Discuss-gnuradio] On the convolutional code performance of gr-ieee802-11

The polynomial in gr-dtv is G1 = 171 and G2 = 133. It is a 1/2 rate code with puncturing to 2/3, 3/4, 5/6 and 7/8. Ron On 09/21/2015 10:52 PM, Jeon wrote: Thanks for your answers, Ron and Marcus. I posted this question since my module is using both Reed Solomon

Re: [Discuss-gnuradio] On the convolutional code performance of gr-ieee802-11

On Tue, Sep 22, 2015 at 1:52 AM, Jeon wrote: > Thanks for your answers, Ron and Marcus. > > I posted this question since my module is using both Reed Solomon ( > https://github.com/pjkundert/ezpwd-reed-solomon) and Convolutional Code > (IT++). > And I saw that CC is

Re: [Discuss-gnuradio] 2Rx 1Tx overflow error

Good day Marcus I am using the most recent version of UHD. The problem I was encountering was due to the USB buffer not clearing before the next data being loaded. This was solved by adding a pause after running the GNURadio program. This however meant I could not run my program in "real time"

Re: [Discuss-gnuradio] GNU Radio installation script

You can try to run again as: ./build-gnuradio -v That will output a bunch of extra info. Hopefully it will show error why build failed. As an alternative, you could try pybombs. http://gnuradio.org/redmine/projects/pybombs/wiki/QuickStart Just run these commands: git clone

Re: [Discuss-gnuradio] 2Rx 1Tx overflow error

I would load it at the time the block is instantiated, in its "make" method, and load it into instance-specific data. On 2015-09-22 06:27, Chad R wrote: > Good day Marcus > > I am using the most recent version of UHD. The problem I was encountering was > due to the USB buffer not clearing

Re: [Discuss-gnuradio] GNU Radio installation script

Yes, although, that will get you a not-terribly-recent GR and UHD... On 2015-09-22 10:45, West, Nathan wrote: > On Mon, Sep 21, 2015 at 11:13 PM, Mike Gilmer wrote: > >> All, >> I recently asked the list some questions about getting GNU Radio up >> and running on a

Re: [Discuss-gnuradio] GNU Radio installation script

I've gotten further along but it still failed. Here's the output +++ Failed to find package 'libzmq1-dev' in known package repositories <-- I noted this in my previous post SOME THINGS MAY NOT BUILD AS A RESULT Checking for package libzmq Checking for package

Re: [Discuss-gnuradio] AGC_FF Code Implementation

On Mon, Sep 21, 2015 at 9:03 PM, Richard Bell wrote: > Hello all, > > I would like to see how agc_ff is implemented, but there is some gnuradio > magic going on that's beyond me. The agc_ff_impl.cc in analog/lib doesn't > do anything but call scaleN. How do I find the

Re: [Discuss-gnuradio] GNU Radio installation script

On Mon, Sep 21, 2015 at 11:13 PM, Mike Gilmer wrote: > All, > I recently asked the list some questions about getting GNU Radio up > and running on a Windows machine (using cygwin). It became obvious > there would be a lot of hurdles, for which the community would not be >

Re: [Discuss-gnuradio] GNU Radio installation script

The failure in libzmq1 is expected--Ubuntu changed package names mid-stream, so there's no way to tell which of two possible package-names to use, so it tries for both. The UHD failure is unexpected, so running: build-gnuradio -v Will give more details about errors as it builds. On

Re: [Discuss-gnuradio] GNU Radio installation script

As noted elsewhere the failure to find libzmq1-dev is expected (what is needed is libzmq-dev) and does not affect the outcome of the installation. However, the UHD installation most likely fails because of the switch from the cheetah to the mako template engine which has not (yet?) made its

Re: [Discuss-gnuradio] GNU Radio installation script

Ubuntu 14.04 has 3.7.2.1 + some extra patches. Newer versions of Ubuntu have newer versions of GNU Radio... Anyway, the easiest way to get all of the dependencies on a fresh Ubuntu/Debian-based install is sudo apt-get build-dep gnuradio, then run whatever install script you want if you *really*