Hi,
Since we can get receive time of rx_stream's first sample via rx tags, I
have two questions about the time granularity. Given the internal clock
is 10Mhz, is the time granularity 0.1us? The fractional second is stored
double type. Does it mean the last digits of the fractional sec are invalid?
Hi Harry,
as far as I know, the granularity of a time stamp is the sample duration
at the downsampled side.
As for the 10MHz: The 10MHz clock is used to derive different other
clocks, especially the rx ADC and tx DAC clocks, which are an order of
magnitude higher; bear in mind that when you re
Dear Marcus,
Thank you for your reply.
I'm confused about two concepts. Referring to the file
time_spec.hpp in UHD, fractional sec is calculated according to the
parameter ticks and tick_rate. So I think the time granularity is
'1/tick_rate' which is 0.1us using 10Mhz clock. But for t
On Tue, Nov 26, 2013 at 8:57 AM, wrote:
> Hi all,
>
> I wrote my own block in C++, and used gr-modtool to do all the 'things'
> around it as described in the tutorial "Out-of-tree modules".
>
> I included 'fft/fft.h' in the C++ source code of the block, and used the
> class 'fft_complex'. Then af
On Mon, Nov 25, 2013 at 12:26 PM, Naceur wrote:
> Hello list,
>
> I got questions re the WX GUI Constellation Sink block:
>
> 1/ Could anyone give descriptions of what is
>
> * Theta ?
> * Loop bandwidth ?
> * Max Freq ?
> * Mu ?
> * Gain Mu ?
> * Symbol Rate ?
> * Omega Limit ?
This block basica
Thanks a lot Marcus, that helped a lot.
I mofified the gr_msg_queue.i as you told me in b) and it worked!
Regards,
Nada
Marcus Müller a écrit :
Hi Nada,
that's really hard to tell based on the information you gave.
I'm currently on the run, so I can't really look at the 3.6 branch
and give
We'll be making a 3.7.2.1 release this coming weekend as a bug-fix only
release of everything that has accumulated on the maint branch since 3.7.2.
If you have any pending bug fixes that haven't been pull requested, now
is the time to get them in.
--
Johnathan Corgan, Corgan Labs
SDR Training an
Hi all,
I'm trying to make a pulse repeater but i don't know how to make it with
GnuRadio Companion. I have no knowlodge on USRP and python, I can say i'm
really a noob, but I've been able to send and receive the signal but what i
want to do is to send the signal and then stop, after a while, send
Hi Harry -
Actually, the name `tick_rate
On Tue, Nov 26, 2013 at 5:49 AM, Harry Zhang wrote:
> Dear Marcus,
> Thank you for your reply.
> I'm confused about two concepts. Referring to the file time_spec.hpp
> in UHD, fractional sec is calculated according to the parameter ticks and
> t
Hi Harry -
Actually, the name `tick_rate` is somewhat confusing. The tick_rate refers
to the clock rate that the DSP chain runs at. Here is a bit of code
regarding the tick_rate from the USRP2 / N-Series implementation that might
make things a little more clear:
_tree->create(mb_path / "t
Hey everyone,
to continue (or revive) the discussion on future development of GRC
started during the GRCon13 I have scheduled a G+ Hangout on Thursday,
December 5 2013, 7pm CET. If you like to discuss/share (your)
ideas/visions (and ideally want to help coding) I invite you to join the
call.
Seba
The volk test is failing on my gnuradio build on a Beaglebone Black
(armv7h) running Arch Linux Arm.
Configuration that failed to enable:
gr-ctrlport *** disabled [do i need this?]
gr-comedi *** disabled [don't need]
gr-qtgui *** disabled [don't need]
gr-documentation *** disabled [don't need]
On Tue, Nov 26, 2013 at 10:38 AM, Ken Adams wrote:
> The volk test is failing on my gnuradio build on a Beaglebone Black (armv7h)
> running Arch Linux Arm.
>
> Configuration that failed to enable:
> gr-ctrlport *** disabled [do i need this?]
> gr-comedi *** disabled [don't need]
> gr-qtgui *** di
On 11/25/2013 06:26 PM, nesimi eldarov wrote:
~/gr-ieee802-11/examples$ sudo ./ofdm_tx.py
~/gr-ieee802-11/examples$ sudo ./ofdm_rx.py
But there is nothing noticable.
Am I doing all correctly?
I just pushed the flow graphs with parameters that work out of the box
for me. Maybe you want
With the increased interest in the GNU Radio ecosystem we've been
seeing over the past few years, the project is growing nicely and
development work, including external contributions, has become a
bigger part of the our work load. To help us keep up with the growing
project and increased demands on
okay,
ofdm_tx.grc should transmit when I am Executing it with 'F6', isn't it?
That is very weird.
I try gr-digital/examples/ofdm$ sudo ./benchmark_tx.py, and works, but ofdm_tx
one fails.
May be I did not get correctly what you mean with 'pushing with parameters '.
Do you set parameters ins
On 11/26/2013 06:48 PM, nesimi eldarov wrote:
okay,
ofdm_tx.grc should transmit when I am Executing it with 'F6', isn't it?
That is very weird.
I try gr-digital/examples/ofdm$ sudo ./benchmark_tx.py, and works, but
ofdm_tx one fails.
May be I did not get correctly what you mean with 'pushing wi
Greetings,
The next VOLK / GPP optimization call will be Dec 12th, same time as
most other calls. The Google+ event is here:
https://plus.google.com/events/cc0em2d25sbf5hrufpoa6eo6at8
I'll send out a rough agenda before the call.
-Nathan
___
Discuss-g
Hi,
I am using GRC3.6.3 and my program is dying with no verbose. so now i
have my core file in my home folder and i cant find the path to the
executable. Can someone please tell me the path?
Thanks!
--
--
Matt D
___
Discuss-gnuradio
nevermind, found it. Thanks!
On 11/26/2013 04:31 PM, Matt D wrote:
> Hi,
> I am using GRC3.6.3 and my program is dying with no verbose. so now i
> have my core file in my home folder and i cant find the path to the
> executable. Can someone please tell me the path?
> Thanks!
>
_
you should be able to run 'gdb python --core=corefilename'
you may want to make sure you have compiled gnuradio with
-DCMAKE_BUILD_TYPE=RelWithDebInfo for useful symbol tables
On 11/26/2013 04:31 PM, Matt D wrote:
> Hi,
> I am using GRC3.6.3 and my program is dying with no verbose. so now i
> hav
Hello,
I have noticed that if I run the ofdm benchmark_tx.py and benchmark_rx.py
programs on both 3.6 and 3.7 versions of gnuradio, I get drastically
different performance. I have been using the 3.7 live dvd to evaluate the
newer version.
When running on 3.6 I can use a bandwidth of 5MHz and the
Given the availability of SDR hardware (USRPs, BladeRF, HackRF, etc) covering
VHF through S/C bands, is there any interest in a wide band power amp to
complement this hardware? GaN seems to be ubiquitous now, and there are medium
power, 48 VDC parts available in low cost SMT packages. So I thi
Hi everyone ,
Can anyone tell me where i can find examples to work with GPSDO
kit from Ettus.
Thanks in advance
Sandhya
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Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
On Tue, Nov 26, 2013 at 9:37 PM, Louis Brown wrote:
> Given the availability of SDR hardware (USRPs, BladeRF, HackRF, etc) covering
> VHF through S/C bands, is there any interest in a wide band power amp to
> complement this hardware? GaN seems to be ubiquitous now, and there are
> medium powe
Hi,
> 50 MHz - 3 GHz bandwidth
> Class AB
> 5 - 30 VDC supply (high efficiency, high frequency boost supply)
> 10 dBm drive
> 37 dBm Psat
> Robust to full mismatch (open/short)
> Logic level enable
> ALC with VSWR monitoring (serial, I2C, etc)
> Small (cigarette pack or smaller)
> Low cost
> Open
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