The osmocom guys are using a 20$ USB catv tuner as a RF source in gnuradio.
3.2MS/s !
http://sdr.osmocom.org/trac/wiki/rtl-sdr
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HI Marcus,
Found the problem, had some issues with the installation, so I used the script
from http://www.sbrac.org/files/build-gnuradio that removed the old
installation and installed a clean GR. Now everything seems to work properly.
Thanks a lot everyone,
BR,
Farhad
>
Hi,
I have bought two gpsdos and install them to my usrp n210. Then I congfiured
them step by step according to the following link provided by ettus LLC
http://files.ettus.com/uhd_docs/manual/html/gpsdo.html.
After all the things had done, I tried to retrieve
the current GPS time by the "gps_time
On Wed, 21 Mar 2012 21:23:39 +0800 (CST), Fengzhu FengzhuYe wrote:
> Hi,
> I have bought two gpsdos and install them to my usrp n210.
Then I congfiured them step by step according to the following link
provided by ettus LLC
http://files.ettus.com/uhd_docs/manual/html/gpsdo.html.
> After all
I'm seeing a segfault in volk_32fc_x2_multiply_32fc_a_sse3 and am
using the current master branch.
It occurs when I connect a gr.multiply_cc to a running flowgraph
(using tb.lock() and tb.unlock()). If the multiply_cc block is
connected before the flowgraph starts running then I don't see a
segfa
On Wed, Mar 21, 2012 at 10:57 AM, Ben Reynwar wrote:
> I'm seeing a segfault in volk_32fc_x2_multiply_32fc_a_sse3 and am
> using the current master branch.
>
> It occurs when I connect a gr.multiply_cc to a running flowgraph
> (using tb.lock() and tb.unlock()). If the multiply_cc block is
> conn
HI fellows,
I was wondering if anybody has been trying to reach 8 Complex Msps over the
USB 2.0 on the Tx path.
While this has always been OK with old libusrp (and USRP 1) it appears to
be no longer possible by means of UHD
neither when trying to do that on USRP1 (a few underruns) nor on B100 (lot
On Wed, Mar 21, 2012 at 11:42 AM, Vincenzo Pellegrini wrote:
> HI fellows,
>
> I was wondering if anybody has been trying to reach 8 Complex Msps over
> the USB 2.0 on the Tx path.
> While this has always been OK with old libusrp (and USRP 1) it appears to
> be no longer possible by means of UHD
>
My sense is that a couple of things are "in play" in these
scenarios:
o UHD seems a little better at reporting under/overflow
than "classic"
o UHD consumes a slightly-larger amount of CPU in some
critical parts of the USB processing than in "classic". Which means that
situations that may
Hi Nick, thanks for the suggestions.
I will test the args. What is the best (maximum?) possible value for
the send_frame_size in order to minimize the overhead yielded by UHD?
Would it be correct to assume that the over-the-wire overhead yielded by
UHD is larger than what the classic libusrp used
On 03/21/2012 05:45 PM, Vincenzo Pellegrini wrote:
Hi Nick, thanks for the suggestions.
I will test the args. What is the best (maximum?) possible value for
the send_frame_size in order to minimize the overhead yielded by UHD?
Would it be correct to assume that the over-the-wire overhead yield
2012/3/19 Alexander List
> **
> On 01/-9/-28163 03:59 AM, Abdelrahman Ahmed wrote:
>
> i'm new to this ,i need your help on how to start detecting spectrum in TV
> band and holes in this spectrum.
>
>
> Ahmed,
>
> though others will probable be able to give you more in-depth directions
> wrt spec
Saw it on Reddit a couple days ago, already have one on order. Then I
might work on making a GnuRadio driver or something for real-time use.
On Wed, Mar 21, 2012 at 3:17 AM, David Kierzkowski wrote:
> The osmocom guys are using a 20$ USB catv tuner as a RF source in gnuradio.
> 3.2MS/s !
>
> htt
I have had enough about this. What the heck is a spectrum hole.
I am pretty sure this is probably a term brought up by some
There are NO spectrum holes. Learn about black body radiation
and KTB
Sorry folks. the term has always erked me.
We can talk about white space.that I c
On 21/03/12 11:25 PM, John Ewan wrote:
> I have had enough about this. What the heck is a spectrum hole.
> I am pretty sure this is probably a term brought up by some
>
>
> There are NO spectrum holes. Learn about black body radiation
> and KTB
>
> Sorry folks. the term has always e
Hi mleech, thanks for your help.
I have done the post-installation task by using the command :sudo
./usrp_burn_mb_eeprom --args=addr=192.168.10.2 --key=gpsdo --val=internal
The terminal return:
Creating USRP device from address: addr=192.168.10.2
-- Opening a USRP2/N-Series device...
-- Current
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