Yet another probably 80% solution is rtl_power which emits a CSV of power
and rtl_heatmap which generates images.
On Tue, Mar 27, 2018 at 8:10 PM, Kevin Reid wrote:
> On Tue, Mar 27, 2018 at 6:19 PM, Balthasar Indermuehle
> wrote:
>>
>> Is anyone aware of a wide band scanner software (that may
On Tue, Mar 27, 2018 at 6:19 PM, Balthasar Indermuehle
wrote:
>
> Is anyone aware of a wide band scanner software (that may or may not be
> GNUradio based) that works with RTL-SDR dongles and with UHD drivers and
> would allow to create a wide band spectrum sweep?
>
I know that https://github.com
At my work we're using R&S EB500s for continuous spectrum monitoring at our
sites of interest. These machines step through the frequencies 70 - 3000
MHz in about 3 minutes in chunks of 50 MHz (from memory), and then assemble
the fragments into a contiguous waterfall display.
Is anyone aware of a w
Michael that provides insight into the error, unfortunately it does not explain
the behavior of the example. The example uses the tx_packet and rx_packet
hierarchical blocks. The output of the tx is routed to the input of the rx. I
bypassed the example channel model and I’m not using hardware at
Hi Alex - The OFDM "#f" printouts means that the header didn't decode
correctly, which in turn means its Rx-computed CRC8 didn't equal the embedded
CRC8 from the header generation. This in turn generally means that OFDM sync
has been lost, which in turn generally means that the Rx "SNR" isn't hi
I'm playing around with some of the packet and ofdm examples with the eventual
goal of streaming udp packets generated by gsrteamer encoding a webcamera.
Unfortunately, I've been having some difficulty with the examples that I can't
understand. For example, running the packet_loopback_hier examp
Hi Piotr - Yes, those are the correct lines to comment out. Remember
that you'll need to "rm -rf" the build directory and start from scratch
with the cmake command to get these changes to take ... cmake handles a
lot of changes very robustly, but tweaks like this not so much so. I
can't help with t
On 03/27/2018 05:47 PM, Firdavs Pulat wrote:
Hi Marcus,
I tried to use the set_agc_mode the same way, but I get an error
during the build process that says: 'class uhd::usrp::multi_usrp' has
no member named 'set_agc_mode.' This API is in the ad9361_ctrl, but it
seems to be looking for it in m
Hi Marcus,
I tried to use the set_agc_mode the same way, but I get an error during the
build process that says: 'class uhd::usrp::multi_usrp' has no member named
'set_agc_mode.' This API is in the ad9361_ctrl, but it seems to be looking
for it in multi_usrp. How would I include the ad9361_ctrl?
A
Hello Michael,
yes, this is true:
# pacman -Ss libuhd
community/libuhd 3.10.2.0-3 [installed]
Universal Software Radio Peripheral (USRP) userspace driver
So, apparently I had it installed. So, I did what you suggested (I think!):
git diff host/CMakeLists.txt
diff --git a/host/CMakeLists.txt
Thanks Ron ,you are the best
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Ron
On 03/27/2018 06:14 AM, Juan Antonio wrote:
Hello, someone would be so kind to tell me how to download the examples of
dtv-utils?
http://www.w6rz.net/adv8dvbt12.ts
http://www.w6rz.net/adv8dvbt23.ts
etc...
No matter how hard I try it al
Hi guys,
I don't know if the RHEL packager is reading this list, but I want to
report that I tried to use GNU radio Centos 7 packages at work and
they are missing libgnuradio-fec and the corresponding headers. I'd
imagine RHEL and Fedora have the same problem.
Best regards,
Adrian
__
Jep, you'd just wrap around and overwrite unconsumed data (maybe even
your own current data).
set_min_output_buffer() should do the trick – after all, items and
buffer size is invariably linked through the itemsize :)
Best regards,
Marcus
On Tue, 2018-03-27 at 11:32 -0400, Jason Hein wrote:
> Ma
Marcus,
You're correct, I probably want to set the minimum. I'm writing a
GRPC source block to accept a data stream over the network. Each read
over GRPC is about 64k bytes or 32k shorts (noutput_items), so I'd
like to increase this number so I don't have to worry about queueing.
I see a set_min
Hi Priyanka,
GRC will generate python code for free when you create the flow graph. After
that its like any python coding adding delay. timer etc.
Modify the python code for your need.
-ben
From: Discuss-gnuradio
on behalf of Priyanka
Sent: Tuesday, March 27,
You set a maximum, and what you got is a value below. Did you plan to
set a minimum instead? What is it that you want to achieve?
Also, noutput_items is not _necessarily_ the full buffer. Typically, on
the first call, you'd get offered half the buffer "to keep the spice
flowing", if I remember cor
I'm having issues increasing the global noutput_items value on my
flowgraph. I'm setting the value in the python flowgraph to be global
for all blocks. The code is below. However, when I print the value
of noutput_items in my general_work() function within one of my
blocks, it's still the defaul
I used costas loop for each synchronization and it workedMy thinking was wrong I thought the signals from different usrps are synchronized together without controlling the offset of usrpsI use usrp N210Now i need to know frequency offset of each usrpAnd my professor and our team read a thesis about
Hello, someone would be so kind to tell me how to download the examples of
dtv-utils?
http://www.w6rz.net/adv8dvbt12.ts
http://www.w6rz.net/adv8dvbt23.ts
etc...
No matter how hard I try it alone: 404 error or a page with many symbols
that I do not know how to transform into a ts file
Best regar
Within the gnuradio source tree, https://github.com/gnuradio/gnuradio .
Where they've been installed depends on your system, but you'd
typically look in places like
/usr/[local/]lib[64]/python2.7/{site,dist}-packages/gnuradio
Note that most of the blocks that come with GNU Radio aren't written in
thank you.
One more question: Where can i find the python code files of GNUradio
blocks?
Thank you
On Tue, Mar 27, 2018 at 2:01 PM, Müller, Marcus (CEL)
wrote:
> Wherever you like, as you know (or can easily infer) the sampling rate
> at every step in your signal chain.
>
> I'd recommend you s
Priyanka,
Based on what you've described so far, it sounds like the most
likely place for it is right after the signal source (UHD, Osmocom,
FCD, etc).
For example, if your source is sampling at a rate of 1e6 (one million)
samples per second, put the head block after it and set the count to
1000
Wherever you like, as you know (or can easily infer) the sampling rate
at every step in your signal chain.
I'd recommend you start by reading the chapter 0 and 1 of https://tutor
ials.gnuradio.org ; afterwards, a lot of things will be clearer to you
and you might be able to answer such question mu
Thanks for your reply. But where should I connect the input and output port
of this head block?
Thanks
On Tue, Mar 27, 2018 at 1:26 PM, Gilad Beeri (ApolloShield) <
gi...@apolloshield.com> wrote:
> Check out the Head block, which takes N as input, and stops (the whole
> flowgraph as a result of
Check out the Head block, which takes N as input, and stops (the whole
flowgraph as a result of how GNU Radio works) after N samples.
N = sample_rate * desired_duration
On Tue, Mar 27, 2018 at 2:08 PM Priyanka Priyadarshini <
ppriyadarshin...@gmail.com> wrote:
> Hello,
>
> I am very new to GNURa
Hello,
I am very new to GNURadio and I have made a FM radio receiver in which I am
recording the data in a file sink.
But, I want to record the data for one millisecond(means i want to stop the
flow graph after 1 millisecond). How can I run the execution of the flow
graph for this specified time?
Hello,
I am very new to GNURadio and I have made a FM radio receiver in which I
am recording the data in a file sink.
But, I want to record the data for one millisecond(means i want to stop
the flow graph after 1 millisecond). How can I run the execution of the
flow graph for this specified
Yes, I think the whitener does the trick. If you plot the PAPR of band
limited white noise, it's pretty much the same curve.
Ron
On 03/27/2018 02:36 AM, Müller, Marcus (CEL) wrote:
Oooh, that's a nice plot!
This is way better than I would have anticipated. Can I attribute that
to awesome white
Oooh, that's a nice plot!
This is way better than I would have anticipated. Can I attribute that
to awesome whitening properties of the code itself and following
scramblers/interleavers?
Marcus
On Tue, 2018-03-27 at 02:31 -0700, Ron Economos wrote:
> CCDF (Complementary Cumulative Distribution Fun
Hi!
On Tue, 2018-03-27 at 16:28 +0900, 김무연 wrote:
> As you mentioned I used costas loop block connected to usrp sources but it
> didn't work as i expected
What does that mean? What did you expect, what did it do instead, how
did you parameterize your costas loop? Plots/Graphs!
> I want to the
On Fri, 2018-03-23 at 14:21 -0700, Martin Braun wrote:
> If you've
> increased the number of carriers, PAPR also goes up (a bit).
Yep, by the same factor as you increase the number of carriers (proof
idea: time-symbol with worst PAPR is the discrete dirac over the vector
of FFT length N. That has
Dear Bakshi,
again, we'd need to get a holistic view of what you're doing. All we
can do is speculate wildly based on your description.
> Is it just that the block I've written is not efficient enough? I
would expect higher CPU utilization in that case.
Possibly. Don't know. You tell us nothing a
It's worth noting that Nathan really did wonders here to make these
releases possible on short notice – so, this is a big "thank you" in
his direction.
I think once in a while it's worth introducing the fauna of our SDR
ecosystem:
VOLK is the "Vector Optimized Library of Kernels"[1].
GNU Radio ha
As you mentioned I used costas loop block connected to usrp sources but it didn't work as i expected I want to the receiver to get cosine wave form that the transmitters senMy professor said to me that because it is not synchronized, the received signal looks like a barcodeI discribe my experiment
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