Thank you very much for your informative responses. Now things are clearer
to me: the possibility of building an antenna array combining two or more
USRPs is just exciting! I'm also delighted with the option of using an
external reference clock. I definitely will buy at least one USRP for the
first
I am also interested in beam forming from a different angle.
I have a 4-element DX Engineering Phased array set up primarily for
the 1.8 MHz and 3.5 MHz
ham bands that I want to convert to a more flexible digitally
controlled array using the USRP. Does anyone
have any phased array software ru
Pavol Ďuriš wrote:
> Hi all,
>
> I have an interest in radioastronomy. I plan to make simple beamforming
> phase array (primary with 4 and later with 8 antennas) with USRP (later
> with 2) and GNU Radio. I am inspired by LOFAR radiotelescope.
> Now I collect all available information about using G
On Jan 31, 2008 12:52 PM, Jeff Brower <[EMAIL PROTECTED]> wrote:
> Maybe you're right, it's inevitable. But I don't think it helps the cause
> of GNU
> radio at government agencies...
I for one would be far more interested in using gnuradio to *spoof* the
surveillance. That would really endear
Carles Fernandez wrote:
Hi everybody,
I discovered GNU Radio few months ago, in a before-go-to-bed surfing.
I found it very interesting, but complicated because of my poor skills
in programming Python or C++. I'm doing research on Global Navigation
Satellite Systems (GNSS) receivers, and I'm
George Nychis wrote:
Hi all,
I'm attempting to generate frequency offset in a script that is adding
some channel features:
http://cyprus.cmcl.cs.cmu.edu/matched_filter/gen_noise_samples.py
The frequency offset is specified, for which the original signal is
mixed and then the offset signal
Hi all,
I'm attempting to generate frequency offset in a script that is adding
some channel features:
http://cyprus.cmcl.cs.cmu.edu/matched_filter/gen_noise_samples.py
The frequency offset is specified, for which the original signal is
mixed and then the offset signal is added with the nois
On Thu, 2008-01-31 at 11:33 -0800, Matt Ettus wrote:
> Kshitij Kumar Singh wrote:
> > Hi,
> >
> > I tried out a simple script to get the gain range of the USRP (I had read
> > in earlier mail archive
> > that we were provided a single gain knob to tune over the entire range of 0
> > to 90 dB):
On 1/31/08, Patel, Tushar P <[EMAIL PROTECTED]> wrote:
> The question that I have is that when I send the signal is there a default
> modulation taking place. If yes then what is it? If not then what options do
> I have for sending the signal and receiving the signal?
Are you using the usrp_sigge
I am attempting to transmit a simple sinusoidal signal generated by GNU radio.
The signal would be transmitted by RFX 2400 connected to one computer and the
transmitted signal would be received by RFX2400 connected to another computer.
Basically the signal would be sent wirelessly from one compu
Kshitij Kumar Singh wrote:
Hi,
I tried out a simple script to get the gain range of the USRP (I had read in earlier mail archive
that we were provided a single gain knob to tune over the entire range of 0 to 90 dB):
There is no gain control on transmit with the RFX boards. There is 90d
Hi,
I tried out a simple script to get the gain range of the USRP (I had read in
earlier mail archive
that we were provided a single gain knob to tune over the entire range of 0 to
90 dB):
-
from gnuradio import gr, usrp
u = usrp.sink_c(0)
subdev = usrp.selected_s
On Thu, Jan 31, 2008 at 10:49:50AM -0500, Steven Clark wrote:
> Pardon the bump. Maybe I should simplify the question:
>
> With the packet modulator, is it possible to run the packet payload
> bits through any kind of flow-graph/block during the rx_callback?
Yes. You could push the bits back int
Eric-
> On Thu, Jan 31, 2008 at 09:13:48AM -0600, Jeff Brower wrote:
> > Toby-
> >
> > > I hope no one minds me putting this up here:
> >
> > I took a look at the Path Intelligence website. It's actually the case
> > that you
> > would track individuals to within a few meters using their cellpho
On Thu, Jan 31, 2008 at 09:13:48AM -0600, Jeff Brower wrote:
> Toby-
>
> > I hope no one minds me putting this up here:
>
> I took a look at the Path Intelligence website. It's actually the case that
> you
> would track individuals to within a few meters using their cellphones without
> their
Martin Dvh wrote:
>
>
> It might pick it up on the 6V power cable.
> You could try putting ferrite beads around the power cable to reduce this.
>
> greetings,
> Martin
>
>
Thanks for your suggestion. I removed a ferrite bead from my USB cable and
put it on the power cable. Tested it again.
Pardon the bump. Maybe I should simplify the question:
With the packet modulator, is it possible to run the packet payload
bits through any kind of flow-graph/block during the rx_callback?
On Jan 27, 2008 6:39 PM, Steven Clark <[EMAIL PROTECTED]> wrote:
> 'lo all.
>
> I would like to place code i
Toby-
> I hope no one minds me putting this up here:
I took a look at the Path Intelligence website. It's actually the case that you
would track individuals to within a few meters using their cellphones without
their
knowledge? What about privacy concerns? It's one thing to be monitored by
s
Hello,
I am reading the Clocking Notes in order to set up a coherent 2 antenna
system.
My setup is a USRP Rev 4.5 and two RFX900 daughterboards dated 3-10-2006
Step1: I want to disable the RFX900 clocks so I need to
Move R64 to R84, Move R142 to R153
which looks straight forward.
Step 2: To
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