Hi Josh,
Thanks for the response!
>Do you have a screencap of the problem spectrum? Maybe from the
>perspective of the receiver.
I'll generate a screencap tomorrow morning when I get back to the equipment.
>Well XCVR2450 has a dual band. I think you are seeing some weirdness
>with the code ei
Hai all,
I'm doing my M.Tech project in GNU Radio and I need to
implement an underwater acoustic channel using gnuradio.Had anyone
previously tried this?? please help me.
--
*ANJU BABU*
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On 05/02/2012 07:42 PM, jasonatran wrote:
>
> Hi All,
>
> I have a pair of USRP N200s with XCVR2450 daughterboards running the latest
> GNU Radio version with UHD. This is an odd problem, but I'm wondering if
> anyone has seen this before.
>
> When I run the benchmark_rx.py/benchmark_tx.py spe
On 03/05/12 12:07 AM, Josh Blum wrote:
>
> Just another free weekend, and I will have VOLK capable of generating
> code to handle head and tail cases.
>
>
>
I once heard tell of this mythical "free weekend". I don't believe in
it. It must be some kind of
fairy tale.
--
Principal Investiga
It sounds like gnuradio is going to finally become completed. cool!
> * gnuradio-runtime - top block and friends and runtime scheduler, very
> small number of blocks for QA testing of runtime (vector source/sink,
> null source/sink, etc.)
>
This will be awesome. That way someone could easily sw
Hi All,
I have a pair of USRP N200s with XCVR2450 daughterboards running the latest
GNU Radio version with UHD. This is an odd problem, but I'm wondering if
anyone has seen this before.
When I run the benchmark_rx.py/benchmark_tx.py specified at 2.4GHz, the
transmitter is transmitting images of
Some of you may have noticed recent check-ins that have added new
top-level components (like gr-fft), or duplication of blocks (such as
into gr-digital.) I'd like to explain the master plan Tom and I are
working from and what to expect over the next few weeks.
Essentially, we are making two thing
All-
I'm looking for advanced developers who are interested in taking our OpenMP
accelerator and creating a demo GNU radio
application.
The accelerator is a 2.5 Teraflop (32-core) PCIe card with a 1 GBe port and is
programmed via OpenMP. The objectives
are twofold:
-fast response / low late
Dear List,
Can we capture two or more frequency simultaneously by using USRP ?
regards
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You can capture two signals within the bandwidth of the baseband
signal. Or you can use a TVRX2, LFRX, or BasicRX for two analog
channels. Or you can use a USRP1.
-John
On 05/02/2012 03:04 PM, Nikhil Agnihotri wrote:
Dear List,
Can we capture two or more frequency simultaneously by using
On 05/02/2012 05:59 PM, Nick Foster wrote:
Complex * complex multiplies are more computationally expensive than
complex * real. For edification and titillation you can read the
volk_32fc_x2_multiply_32fc source. There's an Orc version too which is
easier to read. The moral of the story is you
On Wed, May 2, 2012 at 2:55 PM, Marcus D. Leech wrote:
> I have been in the habit of using complex-bandpass filters even when I'm
> just looking for a symmetric response. I did some measurements
> today and found a 40-45% performance advantage to using a low-pass real
> filter when a symmetric
I have been in the habit of using complex-bandpass filters even when I'm
just looking for a symmetric response. I did some measurements
today and found a 40-45% performance advantage to using a low-pass
real filter when a symmetric response is desired. What's the "crux"
of the performance
On Wed, May 2, 2012 at 8:18 AM, Ben Wojtowicz wrote:
> Thomas,
>
> Thanks for giving it a try!! If you get me your VZW recording, I can
> take a closer look to see what is going wrong with the SIB decoding.
I'll try to post some captures by the end of the week. I should
mention that I used some
On Wed, May 2, 2012 at 3:20 AM, Vanessa Quaranta
wrote:
> transceiver: usrp_standard.cc:1024: virtual bool
> usrp_standard_tx::set_tx_freq(int, double): Assertion `dac_rate () ==
> 12800' failed.
> 1335942873.3055 WARN 3078358736 TRXManager.cpp:254:sendCommandPacket: TRX
> link timeout on atte
RFMD has several interesting GaN devices appropriate for your application,
depending on what third-order-intercept (IIP3) you need.
The question is: who sells modules using those devices.
On Wed, May 2, 2012 at 2:06 AM, Luca Pascale wrote:
> Hi all,
>
> Can someone suggest me a power amplifier to
On 05/01/2012 06:44 PM, Nowlan, Sean wrote:
> Is there a good way to catch UHD errors in Python? I will look into
> gr_async_msg_source for handling L's, O's, U's, and S's, but how does
> one catch UHD runtime errors such as if the Ethernet cable gets
> disconnected from an N200? UHD docs describ
On Wed, May 2, 2012 at 7:26 AM, Evan Merewether wrote:
> For a general purpose linear amplifier, it is hard to beat minicircuits.
> Just be careful not to overdrive it, they get toasted easily.
>
> http://www.minicircuits.com/pdfs/ZHL-1-2W.pdf
I have used the 5W version of the above with success
On Wed, May 2, 2012 at 12:49 AM, Colby Boyer wrote:
> Just saw this on the blogosphere, but no mention on the list I think. May be
> an interesting addition to GNURadio?
>
> http://www.pervices.com/about.html
>
> --Colby
Colby,
Yes, I saw this come through in one of Y Combinator's funding pages.
Will try "try" "catch"... this very well may have been a dumb question. I blame
it on lack of sleep.
From: discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org
[discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org] on behalf of
Nowlan, Sean [sean.
For a general purpose linear amplifier, it is hard to beat minicircuits.
Just be careful not to overdrive it, they get toasted easily.
http://www.minicircuits.com/pdfs/ZHL-1-2W.pdf
Evan Merewether
-Original Message-
From: discuss-gnuradio-bounces+evan=syndetix@gnu.org
[mailto:discus
On 05/02/2012 08:16 AM, Sameh Yassin wrote:
> Dear P. Balister,
> I found that tutorial which explains very well how to create a GPIO folder
> and set its direction
> http://www.avrfreaks.net/wiki/index.php/Documentation:Linux/GPIO#gpio-sysfs
>
>
> I searched for the misc GPIOs to make sure they
On Wed, May 02, 2012 at 11:06:35AM +0200, Luca Pascale wrote:
> Hi all,
>
> Can someone suggest me a power amplifier to use with usrp+wbx on the
> 434 MHz band ? (I need a small output power...from 2 to 5 W).
I had exactly the same need as you, although I did want a bit more power,
but couldn't f
Thomas,
Thanks for giving it a try!! If you get me your VZW recording, I can
take a closer look to see what is going wrong with the SIB decoding.
Thanks,
Ben
On Tue, May 1, 2012 at 7:46 PM, Thomas Tsou wrote:
> On Sat, Apr 28, 2012 at 9:26 PM, Ben Wojtowicz wrote:
>> I am pleased to announce
Dear P. Balister,
I found that tutorial which explains very well how to create a GPIO folder and
set its direction
http://www.avrfreaks.net/wiki/index.php/Documentation:Linux/GPIO#gpio-sysfs
I searched for the misc GPIOs to make sure they are free and I'm pretty sure
that over_gpio0 and overo_g
On 05/01/2012 04:28 AM, Sameh Yassin wrote:
> Hello Dear ,
>
> I used the first link to use overo GPIOs on the E100 to communicate with the
> SPARTN3AN FPGA.
>
> I'm doing the following:
> 1- I chose an empty GPIO input to the FPGA (for example overo_gpio22).
> 2- I modified the FPGA image so
Hi all,
Can someone suggest me a power amplifier to use with usrp+wbx on the
434 MHz band ? (I need a small output power...from 2 to 5 W).
Thanks in advance,
Luca
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mmmh the problem probably comes from
transceiver: usrp_standard.cc:1024: virtual bool
usrp_standard_tx::set_tx_freq(int, double): Assertion `dac_rate () ==
12800' failed.
For patching GNU Radio to 52 MHz, I need to comment the line assert
(dac_rate() == 12800); at line 1024. How can I modi
I think that your solution is almost functional!
I installed like this :
Ubuntu 10.10 (French version)
GNU Radio + UHD from git (GNU Radio 3.6.0)
libusrp-dev from apt-get install tool
openbts 2.6.0mamou
My USRP1 is patched to 52MHz. So I think it's the problem now.
If I run OpenBTS without usin
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