Hi all --
For the last several months, I've been working, as a TAPR project, to
develop an open-source-like license for hardware projects. We've
recently posted a 0.9 version for public comment, and welcome your input.
The license is aimed at real hardware (the stuff you solder on) rather
I have been playing around with the GRC (amazing tool - really love
it!) and I was just taking a look at the GMSK Modulator with some
random data.
I couldn't get the random data block to work properly, so I used a
file source that is just some ascii text. I didn't think this would
matter since
I haven't done much reading on Open Hardware licenses, but I am aware
of one other effort to develop an open hardware license.
http://balloonboard.org/balloonwiki/OpenHardwareLicense
Philip
On 2/12/07, John Ackermann N8UR [EMAIL PROTECTED] wrote:
Hi all --
For the last several months, I've
Hi,
it would be very useful to have a
wx sink that displays the value of its input.
This way we can check in real time values
that change slowly (eg, snr, bit error rate, etc.)
Unfortunately there is no how_to_write_a_wx_block
so I have no idea how to go about it.
If someone can help me by
Thanks for pointing that out! It looks like they were going in parallel
with our process; we first publicly mentioned the OHL at the Digital
Communications Conference in September.
After taking a quick read, though, it seems to be quite different from
what we are trying to accomplish. In
Has anyone successfully collected any GPS L1 data with the DBSRX
daughterboard. If so what decimation, gain, and filter values did you
use to do so? Thanks!
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[ My first post, new to radio ]
I saw on the list the suggestion that the PCR1-100 could make a good
frontend for the USRP. Well, what the heck, 75$ is not much. The radio
works just fine with its windows software, and I can get basic control
of it via hamlib. I searched the net for PCR-100
Gregory W Heckler wrote:
Has anyone successfully collected any GPS L1 data with the DBSRX
Yes, I think this guy(*) used the DBSRX. He includes the collection
scripts on his site as well:
http://www.kd7lmo.net/ground_gnuradio_ota.html
(*) I hate to call him this guy but he keeps his true
Based on his Ham callsign, his name is Michael Gram. (However, based on
the whois for kd7lmo.net, his name is Michael Gray.)
-Roshan
Chris Stankevitz wrote:
Gregory W Heckler wrote:
Has anyone successfully collected any GPS L1 data with the DBSRX
Yes, I think this guy(*) used the DBSRX.
I'm using the 'file_source' module to simulate a data stream. At the end
of a sequence of blocks,
I have a 'message_sink'. However, I don't seem to get any indication of
the end of file condition
when the file_source module detects that state.
Basically the message handler just hangs waiting
Hey all,
I've seen two different methods for setting up USB permissions
correctly, and I can't seem to get either to work. The first way is
udev, the other method is hotplug.
So I tried udev first, and created /etc/udev/rules.d/60-usrp.rules:
# USRP without loaded firmware (FX2)
BUS==usb,
Achilleas Anastasopoulos wrote:
Hi,
it would be very useful to have a
wx sink that displays the value of its input.
This way we can check in real time values
that change slowly (eg, snr, bit error rate, etc.)
Your widh is my command:
Attached is a patch which adds a number_sink_f and
I am new to USRP. I am using usrp_rx_cfile.py to
capture FM stations and using wfm_rcv_file.py to play
them. Say I want to capture FM at 95.8Mhz. What
parameters should I use when calling usrp_rx_cfile.py?
I also want to play the captured data using only the
default parameters to
George Barrinuevo wrote:
When I tried it, the playback sounds like the sound is
playing in slow motion.
This means you are playing it back with a different sample rate than the
one you used to record it.
The recording and playback script should have parameters for sample
rate. Make sure
Johnathan Corgan wrote:
We are preparing to do a new stable branch release this weekend, which
will eventually become release 3.0.3.
We are still pending a fix on the lib vs. lib64 issue (ticket:39) with
FC5 and FC6. Eric will be checking that into a developer branch for
testing on those
[EMAIL PROTECTED] wrote:
I'm pretty new to gnu radio and I want to transmit an OFDM signal
using different modulation types (BPSK, QPSK, and 64-QAM). The
concept is pretty simple: read data, map it to a specified
constellation map, and then send it through an IFFT. I don't know if
this
On Mon, Feb 12, 2007 at 11:59:07AM -0500, George Nychis wrote:
Hey all,
I've seen two different methods for setting up USB permissions
correctly, and I can't seem to get either to work. The first way is
udev, the other method is hotplug.
So I tried udev first, and created
Is there a square wave source? And can sig_source_* be expanded to produce
square waves, triangle, sawtooth..?
-Josh
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flawless victory
but now i have another problem, that i some how created using those two
methods below... I searched the mailing list and google for this but
couldn't find a solution.
[EMAIL PROTECTED] ~/school/SDR/gnuradio/gnuradio-examples/python/usrp $
./usrp_wfm_rcv.py
write_internal_ram
Josh Blum wrote on 2007-02-13 00:56:
Is there a square wave source? And can sig_source_* be expanded to
produce square waves, triangle, sawtooth..?
There is a simple switch on the waveform in the code[0], with some code
for each case to create the waveform. Should be no problem at all.
What
I just bought one of these as well. Right now there is a guy on eBay
selling a load of them (with no accessories) for $50 each plus $5
shipping. Here is the only mod info that I've found on the 10.7 MHz IF:
The buffered 10.7 MHz IF Output is available at the emitter of
transistor of Q85.
I have a PCR-1000 (similar to PCR-100). Where can I
find the instructions to tap the 10.7 Mhz IF for this
receiver? The Data Jack output is the FM
Discriminator which is not as good as the 10.7 Mhz IF.
Also, once you tap the 10.7 Mhz IF, where does it
connect on the Basic RX board? If it
On 2/12/07, Josh Blum [EMAIL PROTECTED] wrote:
I tried it with the samples.txt and the random source doing 1's and 0's.
The constellation doesnt seem to be showing a discontinuity. I attached
the screenshot. Maybe this is a bug in the newer version of the GMSK
code? I am running whatever I
Johnathan Corgan wrote:
[EMAIL PROTECTED] wrote:
I'm pretty new to gnu radio and I want to transmit an OFDM signal
using different modulation types (BPSK, QPSK, and 64-QAM). The
concept is pretty simple: read data, map it to a specified
constellation map, and then send it through an IFFT.
Hello,
I'm still new at this. Please be patient with me.
I'm getting confused by the variances in docs and articles I can find on the
internet. I'm confused about the exact capabilities of the usrp, and the Basic
RXs that I have. I have a usrp rev 4.1 and two basic RX boards (not sure about
Martin,
thanks for the block.
Indeed it is exactly what I wanted (and even more)!!!
One question: since a throttle is not attached to this block,
why do we need separate sample_rate and number_rate parameters?
The only place I saw them used is
one_in_n = gr.keep_one_in_n(gr.sizeof_float,
On Mon, Feb 12, 2007 at 06:56:28PM -0500, Josh Blum wrote:
Is there a square wave source? And can sig_source_* be expanded to produce
square waves, triangle, sawtooth..?
-Josh
You can generate a lot of this stuff with gr.vector_source_f((...), True)
We'd welcome a patch to sig_source_* that
On Mon, Feb 12, 2007 at 05:52:43PM -0800, Hans Glitsch wrote:
Hello,
I'm still new at this. Please be patient with me.
No problem ;)
I'm getting confused by the variances in docs and articles I can
find on the internet.
Best bet is the list, the wiki, the doxygen documents, and the .h
Hello,
I managed to blow the smd fuse on my USRP. It seems to be a 1 Amp 603
fuse. Is there a certain one I need to buy? I would like to order one
from Mouser.
I got the enclosure recently. Where do I plug the fan in? Should the
fan exhaust the air from the enclosure?
73 Eric.
Achilleas Anastasopoulos wrote:
I commited some changes that I made over the last couple of days to
gr-trellis (make distcheck works fine).
I realized that some files in gr-trellis/src/lib are still under version
control, while they are not supposed to be since they are
automatically
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