Hello,
I'm working on a Gps software in conjunction with a usrp and dbsrx.
Unfortunately my dbsrx has an hardware problem and I can't acquire Gps
samples. Can someone record samples in L1 frequency (1.57542 Ghz) for me in
6.4msps/complex or 6.4msps/shorts and make it available for download or
Hi,
I am hooked up to the BasicRx Daughterboard and wrote a simple applicate
using the GRC to survey the spectrum from 1MHz to 250MHz and run the user
tunable output through the WFM Demodulator. I can get FM radio stations in
the 88-108MHz region just find. However, I am also getting copies
Hello,
I am new in SDR so maybe the question might seem childish...
I want to transmit some data at 24 Kbps using CPM modulation and USRP :).
In the gnuradio-3.1.2/gnuradio-examples/python/digital i found the
tx_voice.py example.
Following the example I did my own setup but the problem is that
isaacgerg wrote:
Hi,
I am hooked up to the BasicRx Daughterboard and wrote a simple applicate
using the GRC to survey the spectrum from 1MHz to 250MHz and run the user
tunable output through the WFM Demodulator. I can get FM radio stations in
the 88-108MHz region just find. However, I am
I have a 60 second sample of GPS at 4msps here:
http://www.kd7lmo.net/ground_gnuradio_ota.html
On Thu, 22 May 2008, ALeX wrote:
Hello,
I'm working on a Gps software in conjunction with a usrp and dbsrx.
Unfortunately my dbsrx has an hardware problem and I can't acquire Gps
samples. Can
Hi,
what is the simplest way to caluclate the average of a stream?
I generate a stream of fixed length using head(). I would like to
calculate the linear average (i.e.
sum_of_all_samples/number_of_samples).
Thanks
Wolfgang
___
isaacgerg wrote:
Hi,
I am hooked up to the BasicRx Daughterboard and wrote a simple applicate
using the GRC to survey the spectrum from 1MHz to 250MHz and run the user
tunable output through the WFM Demodulator. I can get FM radio stations in
the 88-108MHz region just find. However, I am
In the short term, how do i fix this problem? Do I just low pass filter my
incoming signal?
Isaac
Ed Criscuolo-2 wrote:
isaacgerg wrote:
Hi,
I am hooked up to the BasicRx Daughterboard and wrote a simple
applicate
using the GRC to survey the spectrum from 1MHz to 250MHz and run the
The mapping you ask describing isnt what I am getting. According to your
scheme, with the Basic RX board, I shouldnt be able to get any FM radio
stations, but I am able to get them. Why is this?
Isaac
--
View this message in context:
Chuck,
Isn't this line
gr_complex filtered_IQ = afc.filter(gr_complex(I,Q));
supposed to be
gr_complex filtered_IQ = afc.filter(IQ);
instead?
Achilleas
Almost working:
gr_complex input = agc.scale(in[k]);
gr_sincosf(d_phase,a_sin,a_cos);
gr_complex IQ = input *
Steven Clark-2 wrote:
hex 00 and 01 are not visible characters, which is why you aren't
seeing anything. Looking at the data, it looks like unpacked data (ie
only the bottom bit of each byte is being used). If you convert it
back to packed data, it may be you'll get your original message
isaacgerg wrote:
The mapping you ask describing isnt what I am getting. According to your
scheme, with the Basic RX board, I shouldnt be able to get any FM radio
stations, but I am able to get them. Why is this?
The daughterboard software knows about aliasing, and maps accordingly
when you
ALeX wrote:
Hello,
I'm working on a Gps software in conjunction with a usrp and dbsrx.
Unfortunately my dbsrx has an hardware problem and I can't acquire Gps
samples. Can someone record samples in L1 frequency (1.57542 Ghz) for
me in 6.4msps/complex or 6.4msps/shorts and make it available for
On Thu, May 22, 2008 at 04:43:23PM +0200, Wolfgang Buesser wrote:
Hi,
what is the simplest way to caluclate the average of a stream?
I generate a stream of fixed length using head(). I would like to
calculate the linear average (i.e.
sum_of_all_samples/number_of_samples).
Thanks
Does anyone know of a GPS antenna that they have had good experiences
with and would recommend?
Thanks
Quoting Gregory W Heckler [EMAIL PROTECTED]:
Bryan:
The DBS-RX is the way to go. I use the +5V bias on the DBS-RX, and
it works fine, with the added benefit of not adding another AC-DC
It looks like i need to get an RF front end to pre-filter all that stuff out
of there.
--
View this message in context:
http://www.nabble.com/BasicRx-Daugterboard-Frequency-Wrapping-tp17375343p17408282.html
Sent from the GnuRadio mailing list archive at Nabble.com.
On Thu, May 22, 2008 at 09:34:43AM -0700, isaacgerg wrote:
It looks like i need to get an RF front end to pre-filter all that stuff out
of there.
There's a reason Matt offers all those daughterboards ;-)
You may want to consider the TVRX d'board. It covers 50 MHz to 870 MHz.
If your main use for this board is going to be broadcast FM, I would
strongly urge you to use a fixed oscillator and a simple mixer to
downconvert the received signal into a range that avoids alias. The fact
that FM broadcast band is split by a fold when used for direct conversion
makes it a bit
Eric Blossom wrote:
On Thu, May 22, 2008 at 04:43:23PM +0200, Wolfgang Buesser wrote:
Hi,
what is the simplest way to caluclate the average of a stream?
I generate a stream of fixed length using head(). I would like to
calculate the linear average (i.e.
After reading a bunch of questions about GPS antennas I am making myself
the guinea pig. I just ordered the Mighty Mouse 3 active GPS antenna.
The spec sheet quotes +5dBi gain at zenith and -1dBi at 10 degrees. I
ordered the antenna from:
http://www.gpszone.ca/accessories/antennas/mm3.php
Hi,
I 'd like to connect two daughterboards (on two separate USRP boxes)
with a coax cable. The cable will replace the two RFX2400 antenna.
What kind of coax cable do I need to buy? Anyone has any experience?
Thanks.
David
___
Discuss-gnuradio
Hi
I will be trying to connect a usrp to a virtual machine this weekend, I
will let you know what happened.
I do know from previous experience that the usrp can send data at a
higher data rate than a virtual machine can handle, so there is a lot of
over run errors.
I only use vm's for testing.
By
Chuck,
I have a question regarding the comment you made in an earlier email on
the subject:
You said:
-
Now my question: Is it possible to tune the usrp so the carrier is at
+.31 Mhz ? (band center at 3, from -.2 to 6.2Mhz?) Then we could run
the cpll at 6.4 or 8Msps and get
On Thu, May 22, 2008 at 10:53:12PM -0400, Achilleas Anastasopoulos wrote:
So the signal u(t) needs to be sampled at 6 Complex-Msps, which is what you
do (sampling it at 6.4 Complex-Msps, or as Eric wants at 8 complex-Msps).
I'm worried about the roll off at the edges of the passband at 6.4
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