I picked up a Odroid XU4 running Ubuntu 15.10 with a HDMI interface and
installed gnuradio from source.
I logged in using SSH and X11.
Then I ran a python script generated on the netbook from same gnuradio
source.
When I transmit a music WAV file using the Odroid and HackRF One, I
can't hear an
Sorry - that is a typo. That should be in0, like you said, and the next
line should be in1. I made a mistake copying over. Thanks for pointing that
out!
On Tue, Jun 7, 2016 at 5:05 PM, wrote:
>
> >>> out0[:] = [x * 1 for x in in1]
> ?? IS THIS A TYPO - meaning "in0"
> out1[:] = [x *
Ah yet another thing: make sure you don't see any "U"s on the output;
those would be underruns, which might be triggered by your block not
being fast enough to keep up with 30.72 million samples per second.
Best regards,
Marcus
On 08.06.2016 01:39, Pavan Yedavalli wrote:
> Sorry, and just as an a
>>> out0[:] = [x * 1 for x in in1]
?? IS THIS A TYPO - meaning "in0"
out1[:] = [x * 1 for x in in1]
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Hi Pavan,
you put in1 to both outputs:
On 08.06.2016 01:39, Pavan Yedavalli wrote:
>out0[:] = [x * 1 for x in in1]
> out1[:] = [x * 1 for x in in1]
Is that intentional?
Best regards,
Marcus
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Sorry, and just as an addition, obviously I could use the "Multiply by"
blocks in GRC, but I am trying to do a much more complex loop involving
this block, so multiplying is only part of the process, and I'm running
into issues there already. Thanks.
On Tue, Jun 7, 2016 at 4:30 PM, Pavan Yedav
Hi,
I created my own block because I wanted to multiply the source sinusoids by
weights before transmitting them out, as shown in the attached GRC diagram
(my_block.png).
However, in my work() function for the block created, I am seeing that
simply multiplying the inputs by anything (first test w
I would like to make some unit tests for a PMT only block I created, but I
haven't been able to find any good examples aside from a StackOverflow post
(
http://stackoverflow.com/questions/36342285/testing-a-gnu-radio-message-accepting-block-with-post).
The hope was that I could simply access the me
Hi Rahul,
ah! With that information (wrong frequency for daughterboard) it all
makes sense. However, UHD will usually print a warning about not being
able to tune to the frequency.
Now, is it possible that you only copy and pasted a part of your
program's output? Otherwise, we'll have to look into
Yes, you can use the BCH and LDPC blocks stand alone. However, the size
of the input data block will be determined by the code rate and frame
size. For example with the LDPC block, a code rate of 2/3 with normal
frame size (64800 bits) would require input blocks of 43200 bits (5400
bytes). In t
Hello all,
I was wondering if in order to use the DVB-S2 BCH and LDPC encoder I
would have to use the header, scrambler, DVB-S2X modulator and physical
layer frame blocks in my Tx side. In other words, can I use the FEC
encoders from DVB-S2 stand alone? Also, is the data coming out from the
DVB
Hello Rahul,
Thank you for working through the setup with me. The XCVR2450 daughterboard
can only tune as low as 2.4GHz so is unable to receive broadcast FM, which
would use the Wide Band FM Receive block, at 98 MHz. You can try observing
WiFi signals at 2.437 MHz as a pretty reliable test signal.
Hi all -
The hotel informed me that they have run out of rooms that fall under our
negotiated discount. I'm working with them on alternatives, and will send
out another update as soon as I have one.
In other news, we have sold about 1/3 of our available capacity!
Cheers,
Ben
Block Diagram image is ATTACHED.
But I am actually not confident whether the device is transmitting the
desired input and then receiving it as it is. What i want to tell i have
used GNU Radio Companion for constructing the FM receiver but shows
following error:
Loading: "/home/rahul/fm_rx.grc"
Hi all,
I've written a packet alignment block whose purpose is to detect packet
drops and insert garbage items into the stream to keep the known data
stream aligned with the received data stream. I'm testing this with no
hardware in the loop at the moment, full simulation.
After a while of workin
Hi all,
I've been getting an intermittent core dump when my gnuradio script closes. It
doesn't seem to be a very critical error, but I ran across this:
https://lists.gnu.org/archive/html/commit-gnuradio/2015-04/msg00327.html
Which shows a bt different from the one I'm getting, and says to repor
Hi Ben & Martin,
Thanks for your replies.
I've just uploaded my flow graphs to -
https://github.com/chrisruk/flowgraphs
Along with the Python module I am working on at -
https://github.com/chrisruk/sigint
I'm going to discuss with my mentor on Thursday, the direction to go, it is
likely I will
I would like to echo this statement, for all summer of code
participants. Please post, publish and submit anything you're working
on. We understand the sentiment of not wanting to show your dirty
laundry, but if we haven't seen any code, we haven't seen anything.
Cheers,
M
On 06/07/2016 09:34 AM,
Hi Chris -
Congratulations, again, on the SOCIS grant, and we are excited to have you
working on GNU Radio!
Great blog post. Can you share a bit about what your final goal is for your
SOCIS work?
It would also be good if you posted the flowgraphs you used somewhere
(Github?) and link to them so
Dear Marcus,
On Tue, Jun 7, 2016 at 6:05 AM, Marcus Müller
wrote:
> Hi Abhinav,
>
> Cool research, with lots of security implications :) !
> Out of curiosity: as there are a lot of different power supply
> topographies, which one are you concentrating on? What does one find in
> "normal" laptop
Hi Abhinav,
On 07.06.2016 17:08, abhinav narain wrote:
> Dear Marcus,
>
> On Tue, Jun 7, 2016 at 6:05 AM, Marcus Müller
> mailto:marcus.muel...@ettus.com>> wrote:
>
> Hi Abhinav,
>
> Cool research, with lots of security implications :) !
> Out of curiosity: as there are a lot of differ
Dear Chris,
RF actually!
Thanks,
Abhinav
On Tue, Jun 7, 2016 at 10:11 AM, Christopher Richardson <
chrisrichardso...@gmail.com> wrote:
> Hi Abhinav,
>
> This sounds really interesting!
>
> Are you using RF or ultrasound out of interest, to grab emissions from the
> SMPS?
>
> cheers
>
> Chris
>
Hi Abhinav,
This sounds really interesting!
Are you using RF or ultrasound out of interest, to grab emissions from the
SMPS?
cheers
Chris
On Tue, Jun 7, 2016 at 6:35 AM, abhinav narain
wrote:
> Hi all,
> I am trying to make a covert communication channel using SMPS noise
> generated by the p
W dniu 01.10.2015 o 14:46, Piotr Krysik pisze:
> W dniu 25.09.2015 o 23:23, Tom Rondeau pisze:
>
>
>
> Looking at the block, I was hoping it was as easy as putting a
> set_relative_rate call in the set_resamp_rate to adjust how the tags
> are being propagated. But it's not that simple. See Issue #8
Hi Abhinav,
Cool research, with lots of security implications :) !
Out of curiosity: as there are a lot of different power supply
topographies, which one are you concentrating on? What does one find in
"normal" laptop power supply "bricks"? Is it the "classical"
fixed-frequency PWM buck, where the
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