Re: [Discuss-gnuradio] dvb-t project with two USRPN200 devices failure

2014-04-17 Thread Ron Economos
Yes, it's possible. The use of the rational re-sampler is to be compatible with commercial DVB-T receivers. If you're just interested in USRP to USRP, then it's okay to use a 10 Msps sample rate. The signal will be slightly wider than a standard 8 MHz signal at 9.142857 Msps. You can modify my DV

[Discuss-gnuradio] April Developer Call Video online

2014-04-17 Thread Philip Balister
Enjoy, http://youtu.be/fbcYt0UGX9k Philip ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] How to Access Received Data for Use In Changing RX Parameters

2014-04-17 Thread madengr
Jonathan Fox wrote > Hey List, > > I have two scripts I am running, the ofdm_v1_tx_freq_test.py and the RX > version of it (see flow graph images and attached transmitter Python > script). I am transmitting a sinusoid using OFDM modulation over the USRP, > it works perfectly. > > I have made an a

Re: [Discuss-gnuradio] help on exception on using the uhd.dll i think...

2014-04-17 Thread Marcus Müller
> (this=0xaca2e0) at > /usr/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp:146 > > #16 0x7f0317585e91 in boost::detail::shared_count::~shared_count > (this=0xadb1a0, __in_chrg=) at > /usr/include/boost/smart_ptr/detail/shared_count.hpp:371 #17 > 0x7f0317591d0a in

[Discuss-gnuradio] Developer Call today at 1700 UTC

2014-04-17 Thread Philip Balister
I'll be starting the hangout promptly at 1700 UTC. (That's 1 PM EDT) I am 99.9% certain I will start the hangout by inviting one person, then posting a link in the #gnuradio irc channel. This worked an hour ago, so I expect things to go smoothly today. Philip

Re: [Discuss-gnuradio] "Error rate" block with USRP

2014-04-17 Thread Tom Rondeau
On Wed, Apr 16, 2014 at 3:38 PM, Azza wrote: > Tom Rondeau-2 wrote > > On Wed, Apr 16, 2014 at 2:06 PM, Azza < > > > azza.ben.mosbah@ > > > > wrote: > > > >> Tom Rondeau-2 wrote > >> > On Wed, Apr 16, 2014 at 10:57 AM, Azza < > >> > >> > azza.ben.mosbah@ > >> > >> > > wrote: > >> > > >> >> Thank

Re: [Discuss-gnuradio] Digital voice encryption block

2014-04-17 Thread Marcus Müller
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Also, if using encryption over a wireless link, you'll need some way to ensure that damaged data gets resent, or to ensure a damaged block does not affect the decryptability of following data. So I think your flowgraphs should read Mic/Soundcard -> l

Re: [Discuss-gnuradio] Digital voice encryption block

2014-04-17 Thread Nowlan, Sean
There is no crypto in the main GNU Radio installation. I am not aware of any public out-of-tree modules that implement crypto. Your best bet would probably be handling crypto at the data socket layer and pushing to a GNU Radio PDU-to-tagged-stream or using GR's message passing interface to pass

Re: [Discuss-gnuradio] Digital voice encryption block

2014-04-17 Thread Ralph A. Schmid, dk5ras
Question 3: AES is indeed a common system for voice encryption, widely used for example in US police / public safety radios (APCO25 standard). Older systems used often DES, but not with a neat linear predictive voice codec, but just a CVSD digitizer, DES box and FSK radio link (Motorola SECURENET).

Re: [Discuss-gnuradio] help on exception on using the uhd.dll i think...

2014-04-17 Thread Marcus Müller
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Iftah, usually you'd run it with a debugger, and try to find out where exactly the access violation happens. Greetings, Marcus On 17.04.2014 16:12, iftah giladi wrote: > Hey, > > > > In order to start my on application code using the uhd code,

[Discuss-gnuradio] help on exception on using the uhd.dll i think...

2014-04-17 Thread iftah giladi
Hey, In order to start my on application code using the uhd code, I tried creating a new blank project ,and did all The necessary includes, and library include in the linker an compiler and so on.. As a starter I copied the uhd_find_devices.cpp to my project lib and build it. It's run o.k

[Discuss-gnuradio] Digital voice encryption block

2014-04-17 Thread Tigor Christian
Hi all, I want to simulate a voice transmission system in GNURadio Companion (GRC) before I build a real one. My system configuration is as follows. TX: mic --> encoder --> encryption --> modulator --> RF Rx: speaker <-- decoder <-- decryption <-- demodulator <-- RF I have succeed in simulati

Re: [Discuss-gnuradio] dvb-t project with two USRPN200 devices failure

2014-04-17 Thread Nasi
Can I trans/receive without Rational Resampler? It distorts the signal too much :( Mon, 31 Mar 2014 20:12:27 +0400 от Nasi : >Thanks a lot! I will try them too... > > >Mon, 31 Mar 2014 09:08:04 -0700 (PDT) от Bogdan Diaconescu >: >> >>One thing I did once and worked are: >> >>1. Use a file sink

[Discuss-gnuradio] Digital voice encryption block

2014-04-17 Thread Tigor Christian
Hi all, I want to simulate a voice transmission system in GNURadio Companion (GRC) before I build a real one. My system configuration is as follows. TX: mic --> encoder --> encryption --> modulator --> RF Rx: speaker <-- decoder <-- decryption <-- demodulator <-- RF I have succeed in simulati

[Discuss-gnuradio] Digital voice encryption block

2014-04-17 Thread Tigor Christian
Hi all, I want to simulate a voice transmission system in GNURadio Companion (GRC) before I build a real one. My system configuration is as follows. TX: mic --> encoder --> encryption --> modulator --> RF Rx: speaker <-- decoder <-- decryption <-- demodulator <-- RF I have succeed in simulatin

Re: [Discuss-gnuradio] ctest -V segfault, coredump reveals nothing

2014-04-17 Thread Kiran Karra
>>> Sounds plausible. Ctest is actually just running a shell script. You can try running that script through gdb. The name of the script will be printed near the top of ctest -V. Alternatively you should be able to find it in $build/modname/python/namespace/qa_whatever_your_test_is_called.sh; a