/ 7) * 4 for DVB-T2
>> applications.
>>
>> Ron
>>
>>
>> On 04/13/2016 08:32 AM, Alexander Levedahl wrote:
>>
>> So, it can be set to say 50.3+pi/10MHz?
>>
>>
>> On Wed, Apr 13, 2016 at 10:55 AM, Ron Economos wrote:
>>
>
>
>> The B2X0 series has a programmable master clock. You can set it to
>> anything from 200 kHz to 56 MHz.
>>
>> Ron
>>
>> On 04/13/2016 05:55 AM, Alexander Levedahl wrote:
>>
>>> Hello,
>>>
>>> Is there a list of sample rates
Hello,
Is there a list of sample rates and associated bandwidths supported by the
B2xx series or a way to generate the list? E.g., the list for the X310 is
to take 120MHz, 184.32MHz, and 200MHz and divide by an integer.
Thanks,
Alex
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Discuss-gnuradi
hange
> with the direction of the log-periodic antenna. I feel I should have
> bought 3 independent N210's instead of this expensive X310.
> --
> From: Alexander Levedahl
> Sent: 4/3/2016 11:23 PM
> To: engineer1...@cox.net
> Cc: usrp-users
>
gain: 45dBi
>
> Dipole gain: 2.15dBi
>
> 45 - 2.15 = 42.85dB(antenna)
>
> Almost 20,000 simple half-wave dipole antenna required, and they'd all
> need to be phase-coherent.
>
> If I've botched the math, please correct me.
>
>
>
>
> On 2016-04-01 1
There are 3 options that I can think of:
1) Use multiple SDRs at each location.
2) Run an optimization algorithm as a post processing step to figure out
what the phase synchronization should be.
3) If there is a transmitting satellite near there in frequency, use that
to determine what the phase
bandwidth at the moment.
Alex
On Thu, Mar 31, 2016 at 12:07 PM, Tom Rondeau wrote:
> On Thu, Mar 31, 2016 at 12:00 PM, Alexander Levedahl <
> alexanderleved...@gmail.com> wrote:
>
>> Hello,
>>
>> The OS is RHEL6.5. I have to download and install packages manually.
&
gt;>
>
> Yes, QWT is required, but PyQWT is no longer necessary. What version of
> GNU Radio are you trying to build?
>
> The gr_filter_design tool still uses PyQWT, so you won't be able to run
> that, but gr-qtgui can be built and run fine without it.
>
> Tom
>
Hello,
I was able to install PyQt. When I attempted to build gnuradio, it
complained that it could not find PyQwt and refused to build the gr-qtgui
component. The gnuradio website gives the impression it is not necessary.
When I attempted to install Qwt, I got an error QT_STATIC_CONST. I believ
ave an idea about what SIMD is, although I could not find any SIMD
> preprocessor defines.
> Am I missing something here?
>
> Abhinav PS Jadon
> 2012122
> Electronics and Communication Engineering Undergraduate
> IIIT - Delhi
> IASc Summer Research Fellow 2015
> *E*: j
Abhinav,
When you run the flowgraph, can you look at system monitor? This will give
some indication whether the problem is that all the cores are pegged or if
RAM is filling up.
A couple of other things to look at:
1) Is there any text being printed to the console?
2) What happens if you disable
Two questions:
1) Have you been able to run any that do not require a GUI? There error
appears to be related to a GUI.
2) What happens when you run volk_profile? There is a warning or error
associated with VOLK.
VOLK is a component of GnuRadio that speeds up math computations by using
the proces
The problem looked like the cmake process could not find swig. SWIG 2.0.12
could be found. According to the gnuradio dependencies (
http://gnuradio.org/doc/doxygen/build_guide.html), it should need at least
1.3.31.
Royce,
To confirm, can you go to the top of /home/[username]/user/gnuradio and
e
Can you run gdb --args python [your flowgraph with its arguments]?
At some point I had an issue that I traced to an FFT block and it turned
out to be one of the volk instructions had a bug in it that was later fixed.
Alex
On Thu, Mar 24, 2016 at 8:29 AM, Marcus D. Leech wrote:
> On 03/24/2016
Hello,
I am using an X310. Recently, I upgraded both gnuradio and uhd versions.
For gnuradio, running gnuradio-config-info -v returns 33110293.
The most recent change number listed in the UHD changelog is 3.9.2
I recently upgraded the firmware version from 9 to 20 using:
uhd_image_loader --arg
calls "set_time_now", "set_time_next_pps" or
> "set_time_unknown_pps".
>
> Which version of UHD are you currently using? Is your USRP equipped with a
> GPSDO?
>
> Best regards,
> Marcus
>
>
> On 22.11.2015 19:56, Alexander Levedahl wrot
Hello,
I have an application that is spewing up 'L's indicating late packet
arrival at the destination. How can I go about investigating this problem
(e.g., how do I determine what the time of transmission is in the packet
and the time it is received by the ettus box)?
I have not done much work
The person who installed the package on my computer said that he followed
whatever instructions came on the website, so I assume he installed whatever
is the most recent.
Alex
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Discuss-gnuradio@gnu.org
http://lists.gnu.or
Thank you for the guide. But I already have GNU radio installed, it is GNU
radio companion that is causing the problems, I have an older version, but I
am not sure if I can upgrade to the new one because I can't find any
instructions on how to do it online. Whatever version I have was installed
a
I might have made an error here by assuming that since the latest version of
grc doesn't come with the build for Fedora 13, it doesn't work with Fedora
13. When I have used the add/remove software tool, it tells me that
0.70-6.fc12 is the most up to date version around, and I can't find
instructio
This is the third time I have asked for help, each time I have tried to be
civil, but I get responses back telling me to learn linux, not help with
GNU-Radio/USRP2. Or if they are help with GNURadio/USRP2, it is with GRC,
which doesn't work with whatever version of Fedora I happen to have.
My ini
Looking through those instructions I realized why Microsoft makes so much
money, when you install programs on a windows machine the OS does it for
you, whereas with linux it requires knowing what a tarball is, what cloning
a repository means, what a git viewer is, what this sentence means "It will
On Sun, Nov 7, 2010 at 2:05 PM, Marcus D. Leech wrote:
> On 11/07/2010 02:00 PM, alexander levedahl wrote:
> > I have tried transmitting an analog signal from one USRP2 to another,
> > but when I run usrp2_fft.py on the rx computer, there is no receive
> > signal. The anal
I have tried transmitting an analog signal from one USRP2 to another, but
when I run usrp2_fft.py on the rx computer, there is no receive signal. The
analog signal is supposed to be two tones at 350 and 440 HZ transmitted at
2.6GHz. Can anyone help me figure out what I am doing wrong?
I have tri
I am having difficulty transmitting anything at all. When I run the below
script on one USRP2, and then run usrp2_fft.py on another computer with
another USRP2 hooked up to it, that shows nothing. I have the appropriate
daughterboards to transmit in that frequency range. When I run a transmit
sc
I have tried transmitting an analog signal from one USRP2 to another, but
when I run usrp2_fft.py on the rx computer, there is no receive signal. The
analog signal is supposed to be two tones at 350 and 440 HZ transmitted at
2.6GHz. Can anyone help me figure out what I am doing wrong?
#!/usr/bin/
I just started using the USRP2 with GNURadio. I have made a script that
uses the gnuradio library, but it does not try and interface with the USRP2.
How do you do this? Or alternatively is there a list of gnuradio functions
that I can look at that has how to set this up? I have tried doing a go
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