On Tue, 17 Apr 2018 at 14:32:17 -0300, Ivo Carlson wrote:
> […]
> The file sink saves the data in a binary format, but I don't know what
> this data represents. How do I interpret this data? What does this data
> represent?
This question can not be answered as we don’t know how your flowgraph
This is a reminder that tomorrow is our monthly project call. As always, we
meet on Google Hangouts at 10 am Pacific time, 1pm Eastern, 19:00 Central
European. Check irc or slack for the link announcement.
Martin
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Thank you JM and Sakthi,
To Jean- I tried taking the absolute square of the collected complex signal
and got the peaks in range of e-3(1/1000). Also to add to your notice the
signal that I am collecting from the RTL-SDR dongle has amplitude in range
of 0.04(peak to peak). Can we be sure of having
I can use scientific notation, such as 2.4e6, in GNU Radio blocks. When I
try 2.4M I get an error ("Value cannot be evaluated"). The examples use
these letter suffixes. Why isn't it working here?
Thank you
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I have tried to install with pybombs prefix init ~/prefix -a myprefix -R
gnuradio-stable, where I read 'gnuradio-stable' refers to the maint
branch. I had the same error. If I'm not running it correctly to get to
the branch you'd like, let me know, and I'll try your way.
Thanks
On Wed, Apr
Sorry for the confusion, I used karel’s fixed branch for my testing.
Under 3.7.12 I get the exact same error on the gr-inspector master branch.
I will try to have a look soon but won’t be available in the next days.
Regards,
Sebastian Müller
gse...@gmail.com
PGP ID DC2AA3EE
Hm, it's surprising it works for Sebastian but not for you, but:
This might be a bug we've introduced in 3.7.12.0. I have a commit on
GNU Radio maint-3.7 (and I think master) that's supposed to fix that.
If someone could try whether the issue is fixed at the current head of
maint-3.7, I'd be
Using Fedora25 and GNU Radio 3.7.12, installing from PyBombs. Now I get a
new error in the Docker container, is this one known?
Generating: '/tmp/gr-inspector/examples/live_signal_detection.py'
Executing: /usr/bin/python2 -u
/tmp/gr-inspector/examples/live_signal_detection.py
File
Hi Paul!
Just like in the analog world, frequency dividers are harder to
implement, since you can't simply use trigonometric formulas as you can
to double frequencies.
In hardware, you'd, typically, you'd do something like a PLL to
discipline your own oscillator to run at a fraction of the rate
a. Sounds reasonable.
b. I haven't checked the chunks_to_symbols_bc source code, but it's
quite possible that whoever added that message port simply didn't add
the GUI definition to the XML file. A pull request that changes that
would be utmost welcome!
Thanks,
Marcus
On Mon, 2018-04-16 at
If you want to make sure that your collected data include GPS signals, get
rid of the BPSK modulation by squaring the complex signal, see
http://jmfriedt.free.fr/trans_num_l3_1_eng.pdf
slides 37-38.
I tried to do my best to describe the demodulation process in
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