On 01/25/2014 09:30 PM, chris 0 wrote:
Tag Debug: Rx Bytes
Input Stream: 00
Offset: 0 Source: n/a Key: packet_len Value: 14
Offset: 0 Source: n/a Key: packet_num Value: 0
Offset: 1 Source: n/a Key: packet_num Value: 1
Offset: 1 Source: n/a Key: packet_len
Hi Nick,
Thanks for your quick reply!
I have to use a 10M sampling rate in my case, but due to computer
constrain, modes_rx will cause overflow when used directly with -r
1000. I gauss it's because it's sampling data in float? I am using a
GPSDO with USRP.
So I record data in short at 10M
Mode a packets don't contain time stamp but that should not stop you te
stamping them from the PC time
Are you Mlat processing. ?
Sent from my iPhone
On 27 Jan 2014, at 5:48 pm, Cheng Chi ch000...@e.ntu.edu.sg wrote:
Hi,
I am using gr-air-modes for decoding the air plane signal with
On Mon, Jan 27, 2014 at 12:23 AM, Cheng Chi ch000...@e.ntu.edu.sg wrote:
Hi Nick,
Thanks for your quick reply!
I have to use a 10M sampling rate in my case, but due to computer
constrain, modes_rx will cause overflow when used directly with -r
1000. I gauss it's because it's sampling
Hi Nick,
The command line:
{{{
modes_rx -T 0 -r 1000 -s packet_float.dat
}}}
The setup:
USRP + WBX + VERT900 Antenna, gain is set at 19 when recording the data.
The output:
{{{
usrp@ubuntu:~/gr-air-modes/apps$ modes_rx -T 0 -r 1000 -s
packet_float.dat
Using file source packet_float.dat
The reason you're seeing lots of false packets is the use of a zero
threshold. Leave the -T 0 part out of the command line. Your other settings
are fine, although if you're indoors you probably aren't going to see much
data at all.
I'll look into the timestamp issue and see if I can replicate it
Hi Martin,
Thanks a lot for all your help! I just added the CRC checker, and it works
perfectly!
I'd never have been able to figure that out by myself.
Kind Regards
Chris
On Mon, Jan 27, 2014 at 8:12 AM, Martin Braun martin.br...@ettus.comwrote:
On 01/25/2014 09:30 PM, chris 0 wrote:
When having no clue about the data I should expect - how can I find out
about the real data, and how can I see what is decoded noise? I am using the
bladeRF, and to me most data looks wrong, too :)
Ralph-
From: discuss-gnuradio-bounces+ralph=schmid@gnu.org
On Mon, Jan 27, 2014 at 2:08 AM, Volker Schroer dl1...@gmx.de wrote:
Hi Michael,
just for clarification:
My CMAKE_INSTALL_PREFIX points to a non existing directory at build and test
time. The libraries used depend on the LD_LIBRARY_PATH settings that point
to an existing installation.
In
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Hi Tom,
that script is certainly somewhat useful, though outdated and does not
really fit the 3.7 architecture.
If you still have it, look for a file called install_manifest.txt, it
lists all modified files.
you can delete all the files using:
I installed using the build gnuradio script, how do I uninstall? Because I
want to install another version. I'm new and I'm still a little lost.
Thank you
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
On 01/27/2014 03:16 PM, Rita de Cassia Negromonte Pessoa wrote:
I installed using the build gnuradio script, how do I uninstall? Because
I want to install another version. I'm new and I'm still a little lost.
Thank you
If you're updating say 3.7.0 - 3.7.2 you can just install one over the
On 01/27/2014 03:48 PM, Rita de Cassia Negromonte Pessoa wrote:
Martin,
thanks for your help. I want to go from version 3.7 to version 3.5. Best
uninstall it manually?
Yes, but are you sure about this? 3.5 is old and unsupported.
MB
___
Attached is a bash script to remove most of gnuradio.
It proved useful doing a 3.6 to 3.7 upgrade a few months back.
Most of it comes from a posting a few years back by (I think) Jonathan Corrigan.
Run with sudo if needed.
-- Tom McDermott
From: Martin
On Tue, Jan 21, 2014 at 2:24 PM, Ben Z en de rest
hoofdeigenw...@gmail.com wrote:
Hi, I am having a basic question about the WX GUI Slider
I am wondering why the Num Steps in WX GUI Slider have to be double the
value than I calculate.
For example, if I have minimum set at 86 MHz and maximum
Tom,
you are right. I'll use github.
I looked at the issue tracker but may be I'm blind. How to log in ?
-- Volker
Am 27.01.2014 14:59, schrieb Tom Rondeau:
On Mon, Jan 27, 2014 at 2:08 AM, Volker Schroer dl1...@gmx.de wrote:
Hi Michael,
just for clarification:
My CMAKE_INSTALL_PREFIX
Haven't used bladeRF, but I have used other LMS6002D-based radios with
gr-air-modes, with some success. The problem is Mode S has a weak CRC and
is thus vulnerable to spurious packets. That said, in practice spurious
replies should be under 1% of your total. Experiment with gain and
threshold
Please go to this URL and request an invitation:
https://plus.google.com/events/ch09l1b628cbvtraspr9rmjt42s
Sorry for the delay getting this info around, I am trying to improve my
hangout skillz. We'll try and do it as an on the aire hangout, so if you
can't get in, there should be a recording.
Long time reader, first time poster so hopefully I'm doing this whole
mailing list thing right.
I was hoping someone could point me in a direction towards fixing this odd
problem I am having. I have a GRC graph which outputs complex samples. I
would like to write these samples specifically to a
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Hi Jordan,
you have to be aware that WAVs are only meant to hold real-valued
data. So the question stands: how to store complex signals in WAVs?
Usually, this is done by mapping the real and imaginary parts to the
two stereo channels. Since I don't
Well it indeed appears to be my graph. Tried using a simple graph.
Signal Source (32k) Complex - Float WAV
Dream decoded it, SDR# read it, and it was fine.
My graph of interest must have a sample-rate no lower than 360k. It appears
to be recording something, but its almost as if it is
Well it indeed appears to be my graph. Tried using a simple graph.
Signal Source (32k) Complex - Float WAV
Dream decoded it, SDR# read it, and it was fine.
My graph of interest must have a sample-rate no lower than 360k. It appears
to be recording something, but its almost as if it is
Well it indeed appears to be my graph. Tried using a simple graph.
Signal Source (32k) Complex - Float WAV
Dream decoded it, SDR# read it, and it was fine.
My graph of interest must have a sample-rate no lower than 360k. It appears
to be recording something, but its almost as if it is
Hi all!
I have a simple flowgraph: a signal source, a throttle and a waterfall plot.
I'd like to change the frequency of the signal source during runtime using the
output of a python script. The output of the python script is time-varying,
then I should see some variations in the plot during
On 01/27/2014 11:19 PM, Marco Bosco wrote:
Hi all!
I have a simple flowgraph: a signal source, a throttle and a
waterfall plot. I'd like to change the frequency of the signal source
during runtime using the output of a python script. The output of the
python script is time-varying, then I
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