2 meters seems like an incredibly short distance unless you have an attenuator
in series with the Tx antenna. You may be overdriving the receiver and causing
distortion errors.
@(^.^)@ Ed
Sent from my iPhone
> On May 12, 2023, at 8:10 PM, Hamed Al-Zubi wrote:
>
>
> Hello
“Any sufficiently advanced technology is indistinguishable from magic.”
— A. C. Clarke
@(^.^)@ Ed
Sent from my iPhone
> On Mar 28, 2022, at 9:25 AM, Robert McGwier wrote:
>
>
> GnuRadio is so good it can even do magic. 邏
>
>> On Mon, Mar 28, 2022, 2:01 AM Lo
be a stream of bits.
@(^.^)@ Ed
On 12/8/21 7:51 AM, via GNU Radio, the Free & Open-Source
Toolkit for Software Radio wrote:
Hi,
I created a flow graph as shown in the attachment. It was modified based
on gr-digital/examples/ofdm_tx.grc. I added LDPC encoding for error
correction,
Sorry, meant to send this to the list.
@(^.^)@ Ed
Sent from my iPhone
Begin forwarded message:
> From: Ed Criscuolo
> Date: September 21, 2021 at 11:23:24 AM EDT
> To: Marcus D Leech
> Subject: Re: why when i use gnuradio for USRP with UHD for high sample rate
> record f
Assuming you have room for an additional daughtercard, have you considered
using a Basic RF card instead of GPIO? May require some signal level
conditioning of the output, but should go plenty fast enough.
@(^.^)@ Ed
Sent from my iPhone
> On Sep 10, 2021, at 12:08 PM, Dobler, Anton wr
Did you account for the 0-180 phase ambiguity when demodulating BPSK?
This would produce an inverted bitstream which wouldn't be noticeable
when transmitting alternating 1s & 0s.
@(^.^)@ Ed
On 8/10/20 2:50 AM, Shruti Gupta wrote:
Hi all!
I am working on implementing BPSK communica
I too had the same immediate reaction, and did not look at the file.
For what its worth, I ran it through Jotti's Malware scanner, and
it found nothing suspicious.
@(^.^)@ Ed
On 6/26/20 4:12 AM, Johannes Demel wrote:
Hi Silvio,
please do not send docx Files. After reading Marcus answer, I
rotation of the phase constellation.
As a side note, this is essentially the same algorithm that is used
to acquire a spread-spectrum signal.
@(^.^)@ Ed
I've noticed that recent postings to the list are missing
the "[Discuss-gnuradio] prefix that was automatically
added to the subject line.
Was this a deliberate change? I hope not, as I find that
feature very useful in picking out the list messages
from amid all the spam.
@(^.^)@ Ed
I believe you want to use event_stream
@(^.^)@ Ed
Sent from my iPhone
> On Jul 27, 2019, at 1:08 PM, Ido Bronfeld wrote:
>
> Hi everyone! I am trying to generate an AX.25 Packet with the HDLC Framer, my
> issue is generating the preamble per the AX.25 spec (Repeating flags - 0
But this would only work well if there is enough gap time and/or preamble bits
and/or fill bytes between the packets. Otherwise, you will consume and discard
the beginning of the next packet.
@(^.^)@ Ed
Sent from my iPhone
> On Dec 31, 2018, at 4:52 AM, Daniel Estévez wrote:
>
If you just hit reply, it only goes back to the poster. You need to hit "reply
all" to get it to go back to the list.
@(^.^)@ Ed
Sent from my iPhone
> On May 11, 2018, at 1:40 PM, F salem <faha...@hotmail.com> wrote:
>
> Dear all
>
> I made alot of post but
to
1000. This will shut down after 1 millisecond.
@(^.^)@ Ed
On 3/27/18 7:41 AM, Priyanka Priyadarshini wrote:
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.
"THIS CAUSES A PROBLEM!". But that happened in 2013. I don't
think there was ever a way you could place your own marker via the
GUI. Do you remember anything more about the functionality you're
thinking of?
On Fri, Jan 19, 2018 at 2:46 PM, Ed Troy <et...@aeroconsult.com
<mailto:et...
I have an fft plot and I want to put a marker on the peak signal. I
don't see any way to do this, but I'm sure it can be done. How is this
done? I have tried both WX and QT Gui.
Ed
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. But, it
should work. I was able to get an RTL to "sort of" work a while ago,
although the audio quality was very poor with a lot of noise and breakup.
Regards,
Ed
On 12/18/2017 3:07 PM, Kyeong Su Shin wrote:
Dear Ed Troy:
Update: I was able to reproduce (..or maybe create a simila
, perhaps they could publish the grc file?
Regards,
Ed
On 12/15/2017 8:33 PM, Kyeong Su Shin wrote:
Dear Ed Troy:
I don't have the PlutoSDR with me right now, so I cannot test it now,
but a few things to check:
-Make sure that your Pluto can go down to 90MHz alright; it is only
rated to operate
, and the results indicated that the changes worked. And, I have
tried using the Pluto at higher frequencies to detect a WBFM signal, and
it still does not work properly. So, I know it has to be something with
my grc file.
What am I doing wrong?
Ed
Thu Nov 20 18:01:12 2014
options
, and the results indicated that the changes worked. And, I have
tried using the Pluto at higher frequencies to detect a WBFM signal, and
it still does not work properly. So, I know it has to be something with
my grc file.
What am I doing wrong?
Ed
Thu Nov 20 18:01:12 2014
options
I could never get the Pluto modules to work with gnuradio under Ubuntu
17.04. So, I scrapped that and installed Ubuntu 16.04.3 LTS. Now, when I
try to install gnuradio, the following happens with the following
errors., primarily Internal compiler error
edtroy@ubuntu:~$ pybombs prefix init -a
/blog/pybombs-the-what-the-how-and-the-why/
But, that did not work.
I would prefer to use Pybombs, but don't really care as long as I get a
working system.
Thanks,
Ed
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should find it! :)
Sent from my iPhone
On Nov 21, 2017, at 4:40 PM, Ed Troy <et...@aeroconsult.com
<mailto:et...@aeroconsult.com>> wrote:
I did find a gr-iio.lwr file in home/.pybombs/recipes/gr-recipes/
along with many, many other *.lwr files in the notebook
On 11/21/
?
I’m not sure what to say at this point.
Start from absolute scratch?
I can delete and install gnuradio, and gr-iio on my Ubuntu 16.10
Desktop and VM, using PyBombs. Pluto gets installed.
Sent from my iPhone
On Nov 21, 2017, at 3:32 PM, Ed Troy <et...@aeroconsult.com
<mai
What could cause that? I just confirmed that the notebook has internet
connectivity.
On 11/21/2017 2:41 PM, Brashendeavours wrote:
It looks like that error occurred because your PyBombs doesn’t a
connection to download gr-iio? “Unable to fetch”
On Nov 21, 2017, at 2:36 PM, Ed Troy <
these instructions and if any give you an error, post that.
gnuradio-companion gives me:
Inline image 1
Blake
On Tue, Nov 21, 2017 at 1:18 PM, Ed Troy <et...@aeroconsult.com
<mailto:et...@aeroconsult.com>> wrote:
My setup is under ~/prefix/default
Actually,
give you an error, post that.
gnuradio-companion gives me:
Inline image 1
Blake
On Tue, Nov 21, 2017 at 1:18 PM, Ed Troy <et...@aeroconsult.com
<mailto:et...@aeroconsult.com>> wrote:
My setup is under ~/prefix/default
Actually, I had tried that earlier and it did not wor
Forwarded Message
Subject: Re: [Discuss-gnuradio] How to get PlutoSDR Sink and Source
into Gnuradio in Linux Ubuntu 17.04
Date: Tue, 21 Nov 2017 13:18:42 -0500
From: Ed Troy <et...@aeroconsult.com>
To: Brashendeavours <brashendeavo...@gmail.com>
Hi Blake,
I saw that, and some other things, but I am wondering if that will work
in my case since I installed Gnuradio-companion using PYBOMBS. I believe
that results in a totally different directory structure, but I am not sure.
Regards,
Ed
On 11/21/2017 12:21 PM, Brashendeavours wrote
to get from the
above-mentioned web site.
Thanks,
Ed
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. But, they should be back on the market soon. And, as a student
you can probably get one for $99. The worst case would be $150.
Ed
On 9/29/2017 4:18 AM, w xd wrote:
Hello guys,
Have some suggestion on the cheaper SDR platform for
us to use with the GNURADIO software
Micro R820T tuner
[R82XX] PLL not locked!
[R82XX] PLL not locked!
Ed
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"usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="4014",
GROUP="adm", MODE="0666", SYMLINK+="rtl_sdr"
Ed
On 9/28/2017 4:20 PM, Federico 'Larroca' La Rocca wrote:
Hi,
I think you've forgotten to blacklist the dvbt driver. In Ubuntu, you
hav
t;usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2838",
GROUP="adm", MODE="0666", SYMLINK+="rtl_sdr"
But, when I try to run the example, I still get the above error. Any
ideas what I am do
ing that I installed using pybombs. How
do I get this into my setup without messing it all up? Using pybombs I
installed everything into ~/prefix/default
Ed
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know I installed usrp and also rtl-sdr files, but apparently not in
the correct place.
My directory structure is:
Any ideas where I went wrong, or how to fix this?
Ed
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of Ubuntu that time, but I am not sure.
ED
|
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, but definitely makes its analysis more complicated.
Hope this is still useful to you. Cheers,
Ed
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What about an RFNoC solution?
@(^.^)@ Ed
Sent from my iPhone
> On Sep 26, 2016, at 7:16 PM, Sylvain Munaut <246...@gmail.com> wrote:
>
> Hi,
>
>
>> It seems like a perfect fit for a poly phase filter - however this is
>> something that I believe needs to
On 9/6/16 10:56 PM, Cinaed Simson wrote:
On 09/06/2016 02:05 PM, Ed Criscuolo wrote:
I've just ordered one of these SDR standalone radios,
It appears to be a radio - not a SDR.
No, it is an SDR internally, with a self-contained User interface
and sound output that makes it a complete stand
-reference/
@(^.^)@ Ed
Sent from my iPhone
> On Sep 6, 2016, at 4:34 AM, Marcus Müller <marcus.muel...@ettus.com> wrote:
>
> Yes, you can :) Offering synchronization using external 10MHz and PPS signals
> is the purpose of the Octoclock-G !
>
> However, the B210's LOs
On 8/16/16 11:28 PM, Inspire Me wrote:
Hi Ed
Much appreciated. You mentioned latency due to queued flags. This has
potential to cause us issues. I was wondering if it is possible to build
a block as a sort of switch that takes input from the standard HDLC
Framer but executues continuously, ie
ing_packet();
}
// If bit_buf fifo is still empty, push a FLAG into it
if(d_fifo.empty())
{
push_flag();
}
// Output a bit from the bitbuf in the low-order bit of the output byte
outbuf[i] = d_fifo.pop();
}
return noutput_items;
}
@(^.^)@ Ed
On 8/16/16 8:12 PM, Inspire Me
Thank you Marcus. I was overlooking the input fields in the property
settings for the hier block. As usual the answer seems simple once it is
explained.
-Ed
On Mon, Jul 25, 2016 at 4:36 PM, Marcus Müller <marcus.muel...@ettus.com>
wrote:
> For lazy people: This is about generating hi
I 'thought' that my reply would appear threaded within the discussion I was
reading (
https://lists.gnu.org/archive/html/discuss-gnuradio/2013-02/msg00336.html)
my apologies for any confusion
On Mon, Jul 25, 2016 at 3:35 PM, Ed Coleman <ed.coleman...@gmail.com> wrote:
> This was a ver
.
Within the hier block I have a parameter block with the ID 'avgLength' and
the moving average block has a length of 'avgLength' and a scale of
'1.0/avgLength'. How do I pass the value of avgLength from the top block
into the parameter of the hier block?
Thanks in advance for any replies.
-Ed
Your flowgraph intrinsically has one symbol per sample in the data generation
portion. You need a resampler just ahead of the throttle to interpolate in
order to increase the number of samples per symbol.
@(^.^)@ Ed
Sent from my iPhone
> On Jul 21, 2016, at 3:15 PM, Olivier Goye
orkload at once; so possibly
> this isn't even a problem, because the program you want to use to work on
> that data might be expecting buffers of samples, too.
>
> Best regards,
>
> Marcus
> On 19.07.2016 22:11, Ed Coleman wrote:
>
> Hello Marcus:
>
> Thank y
Kevin:
Thank you for the quick and complete reply, I appreciate the help!
-Ed
On Wed, Jun 29, 2016 at 11:04 AM, Kevin Reid <kpr...@switchb.org> wrote:
> On Jun 29, 2016, at 07:50, Ed Coleman <ed.coleman...@gmail.com> wrote:
> > if __name__ == '__main__':
>
've missed something fairly basic, any help would be appreciated.
Thanks.
-Ed
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Do you have four unique IP addresses assigned to the four USRPs?
If they all have the same default address, this could cause the four
packet streams to look like one stream, but the sequence numbers
wouldn't track, hence the ""s.
@(^.^)@ Ed
On 6/23/16 10:24 PM, Pavan Yedav
n the spectrum. Its up to you.
But you'll be REALLY unpopular if you plop a 6 MHZ wide channel right
in the middle of the voice VHF band! Not to mention earning a visit
from the FCC (if you're in the US)!
@(^.^)@ Ed
On 11/17/15 5:07 PM, Rama V wrote:
Thanks for the reply Marcus. So this channel
wave should have a single peak on the spectrum.
@(^.^)@ Ed
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not found
:info:build # include iosfwd
:info:build^
...
Help!
@(^.^)@ Ed
On 7/2/15, 12:43 PM, Michael Dickens wrote:
Hi Ed - Sorry to hear of your troubles migrating / upgrading MacPorts.
Yes, it can be a real pain. If you stick with default variants, then
most of the ports
file to omit all but the most recent
versions of each port and try again. Failing that, the only course
I see is to wipe everything again and start installing them one by one,
by hand. :((
Any suggestions would be welcome.
@(^.^)@ Ed
On 7/1/15, 8:58 AM, Michael Dickens wrote:
Hi Ed - When
/local/include/sys/Conf.h:28:12: fatal error: 'iosfwd'
file not found
:info:build # include iosfwd
:info:build^
...
Is this a known problem?
@(^.^)@ Ed
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My blood pressure spiked for the first sentence and a half! (then I
remembered the date)
@(^.^)@ Ed
On 4/1/15, 3:30 PM, Martin Braun wrote:
*Move to .NET*: This is probably the biggest change for now. Because of
our continuing troubles with SWIG, we decided to move to a different
platform
of the flowgraph that are dealing with packed or
unpacked data bits, as these are at a MUCH lower rate than the I/Q
samples going into the demodulator.
@(^.^)@ Ed
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Thanks Kai.
Which OSX are you using: Mountain Lion, Mavericks, or Yosemite?
@(^.^)@ Ed
Sent from my iPod
On Dec 29, 2014, at 6:44 AM, Kai Garrels kai.garr...@gmx.de wrote:
Dear all,
not sure if this is still interesting: I managed to install gnuradio without
X11 on Mac OS X using
On 11/14/14 4:49 PM, Tom Rondeau wrote:
On Fri, Nov 14, 2014 at 3:14 PM, Ed Criscuolo
edward.l.criscu...@nasa.gov mailto:edward.l.criscu...@nasa.gov wrote:
I'm trying to use the Packet Header Generator block
(not the Default one) from within GRC to generate a
packet header formatted
it or is there no generic header formatter capability?
@(^.^)@ Ed
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up a timestamp value for the header?
@(^.^)@ Ed
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-video-sdl/lib/CMakeFiles/gnuradio-video-sdl.dir/all] Error 2
make[1]: /usr/local/Cellar/cmake/3.0.2/bin/c
Anybody have any ideas on how to solve this problem?
Thanks,
Ed
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Yep, that was me. I was getting to pipe-in with the same suggestion.
@(^.^)@ Ed
On 10/10/14 8:20 PM, Vanush Vaswani wrote:
I ran into this problem when doing 57.6kbps BPSK decoding, AX.25. The
only way I was able to fix it was to reduce GR_FIXED_BUFFER_SIZE in
flat_flowgraph.cc
for our application we were able to strike that balance.
Your mileage may vary.
@(^.^)@ Ed
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Michael,
Thanks for the rapid response!
Did a sync and tried installing it, and got the following
error while it was working off the dependencies:
[eds-mac:edwardc] edwardc% sudo port
MacPorts 2.2.1
Entering interactive mode... (help for help, quit to quit)
[edwardc] install gr-mac
---
of the QT stuff that I need.
Any Ideas on what I did wrong in the installation or configuration?
Thanks,
Ed
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Hi:
I am having problems building gnuradio on armV7 that I cannot figure out. I am
using pybombs.
Here is a snapshot of the errors during the build:
Built target pygen_gr_vocoder_examples_6232c
[ 23%] Built target fcd_swig_swig_doc
[ 24%] Built target pygen_gr_fcd_python_fcd_2e9af
[ 24%] Built
to interactively manipulate large quantities of logged data.
http://www.visualdatatools.com/DataGraph/
@(^.^)@ Ed
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.
@(^.^)@ Ed
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through
to make this accessor available from python?
@(^.^)@ Ed
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On 6/6/14 1:50 PM, Martin Braun wrote:
You also need to add the accessor in the include/*.h file as a virtual
member function.
Thanks Martin. That did it, although I had to rerun cmake to get it
to propagate into the swig files.
@(^.^)@ Ed
On 6/6/14 2:30 PM, Ed Criscuolo wrote:
On 6/6/14 1:50 PM, Martin Braun wrote:
You also need to add the accessor in the include/*.h file as a virtual
member function.
Thanks Martin. That did it, although I had to rerun cmake to get it
to propagate into the swig files.
Guess I spoke too
On 6/6/14 3:20 PM, Tom Rondeau wrote:
On Fri, Jun 6, 2014 at 3:02 PM, Ed Criscuolo
edward.l.criscu...@nasa.gov mailto:edward.l.criscu...@nasa.gov wrote:
On 6/6/14 2:30 PM, Ed Criscuolo wrote:
On 6/6/14 1:50 PM, Martin Braun wrote:
You also need to add the accessor
to it? Or will this cause a confusion
at link time, by creating two libraries with the same name?
@(^.^)@ Ed
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streams. Stream 0 will contain the index value in the vector where the
maximum value occurred.
I checked the code template for max (GR v3.7.3), and it doesn't even
seem to retain the index of the max it reports.
@(^.^)@ Ed
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When using a Freq. Xlating FIR filter with decimation and taps
both set to 1, what determines the practical lower limit
for the resolution of the freq change?
@(^.^)@ Ed
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to confirm or cancel the enter, because you may want to
deliberately enter something that's wrong now but will be
fixed later (for instance a variable name that you haven't
created yet).
@(^.^)@ Ed
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Connect up a null sink and null source in parallel with the uhd blocks. Then
right- mouse on the uhd blocks and select disable. This will gray-out the
blocks and not compile them, but will leave them there preserving all your
parameters.
@(^.^)@ Ed
Sent from my iPod
On Apr 8, 2014, at 11
.
@(^.^)@ Ed
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shows me as
having boost 1.55.0 installed.
The same exact module makes fine on a different system
running 3.7.2.1 under Ubuntu 12.04lts.
Any ideas? Thanks!
@(^.^)@ Ed
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I've seen it stated here on the list that the MPSK receiver
block will work for either QPSK or OQPSK (Offset QPSK).
Anyone know if it will work with Shaped Offset QPSK
(SOQPSK) or the ARTM defined SOQPSK-TG?
@(^.^)@ Ed
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N210. You should probably rerun make and
make install on gnuradio as well to insure you are linked
to the new UHD libraries.
@(^.^)@ Ed
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:
===
Executing: /Users/edwardc/Work/gnu_radio/DAS_Test_01.py
Warning: failed to XInitThreads()
Using Volk machine: sse4_1_64_orc
===
Are either of these significant?
@(^.^)@ Ed
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.
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Outstanding! Thanks for putting in the time to make this happen!
What version of gnuRadio was it built against?
@(^.^)@ Ed
On 11/20/13 4:05 PM, Achilleas Anastasopoulos wrote:
I have been working on a DSSS system for some time now.
You can find our work-in-progress here:
https
radio?
Thanks,
Ed
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Discuss
Thanks Jonathan! That tidbit probably saved me an hour of
troubleshooting right there! :)
@(^.^)@ Ed
On 2/12/13 10:16 AM, Johnathan Corgan wrote:
On Sat, Feb 9, 2013 at 10:24 AM, Ed Criscuolo
edward.l.criscu...@nasa.gov mailto:edward.l.criscu...@nasa.gov wrote:
My question
into a corner here.
@(^.^)@ Ed
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got no error messages during the builds.
@(^.^)@ Ed
STEP 1. Downgrade Boost
--
bash-3.2$ mkdir tmpboost
bash-3.2$ cd tmpboost/
bash-3.2$ svn co -r 98466 http://svn.macports.org/repository/macports
... svn messages...
bash-3.2$ cd boost
bash-3.2$ sudo port build
... port messages
Has anyone been using Gnu Radio on a Raspberry Pi lately? (just got one for
Xmas :) ) Any special build procedures for 3.6.3?
@(^.^)@ Ed
Sent from my iPod
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On 1/17/13 10:35 AM, Philip Balister wrote:
On 01/17/2013 08:57 AM, Ed Criscuolo wrote:
Has anyone been using Gnu Radio on a Raspberry Pi lately? (just got one for
Xmas :) ) Any special build procedures for 3.6.3?
Please remember the R-pi is an armv6 based processor with a vfp unit
the Beagle Bone would be a better choice.
@(^.^)@ Ed
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++ overloading to determine which constructor
or set method to use.
@(^.^)@ Ed
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values that
the MPSK Receiver Class's loop(s) are locked to? I've looked
through the 3.6.1 Doxygen docs for this class, but didn't find any
accessor methods for these values.
@(^.^)@ Ed
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https
,
about 4 minutes later.
4. Is there any good tutorial or example information on
the use of stream tags? (I'm using GR 3.6.1)
5. Does all this sound like I'm headed in the right direction,
or is there something fundamental that I'm missing?
Thanks in advance for any help!
@(^.^)@ Ed
in the daughtercard driver sw that hard limits
the WBX to 2200 MHz?
TIA.
@(^.^)@ Ed
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, a decimation factor
of 64 would yield baseband complex samples at 1 MSamples/sec.
@(^.^)@ Ed
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interface, you directly set
the decimation factor, so you had to know the hardware sample rate in order to
know what sample rate you would end up with.
@(^.^)@ Ed
Sent from my iPod
On Jul 11, 2012, at 8:36 AM, Jamie Wo weijunming2...@gmail.com wrote:
Hi Nick,
Thanks for your reply
on the wiki. The build
page on the wiki simply has a link that takes you back to the
3.6.1 README!
Any suggestions or help would be appreciated.
@(^.^)@ Ed
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applications when this
Nyquist theory is not respected. How come?
GnuRadio uses complex (I Q) samples. This results in twice the data
per sample, satisfying the Nyquest criterion.
@(^.^)@ Ed
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