On Tue, Dec 17, 2013 at 12:01 PM, Marcus D. Leech wrote:
> On 12/16/2013 10:52 PM, Activecat wrote:
>
> Dear Sir,
>
> "bool set_mux( int mux );"
>
> This command is supported by GNU Radio 3.4.2 C++ API
> but not GNU Radio 3.7.
>
> In this case, how to control the MUX using GNU Radio 3.7 C++
Yes, I mean, what is teh equivalent command in UHD API ..?
How to control the MUX in the UHD API ?
"set_mux()"
On Tue, Dec 17, 2013 at 12:01 PM, Marcus D. Leech wrote:
> On 12/16/2013 10:52 PM, Activecat wrote:
>
> Dear Sir,
>
> "bool set_mux( int mux );"
>
> This command is supported by
I'd like to report some signal metrics for satellite downlinks. SNR would
seem to be one example, but most algorithms I see for SNR assume that you
are generating a signal from a separate clean signal and noise source, each
with known power. What I have are recordings of real, narrow-band, digita
On 12/16/2013 10:52 PM, Activecat wrote:
Dear Sir,
"bool set_mux( int mux );"
This command is supported by GNU Radio 3.4.2 C++ API
but not GNU Radio 3.7.
In this case, how to control the MUX using GNU Radio 3.7 C++ API ?
http://gnuradio.org/doc/doxygen-3.4/classusrp__standard__rx.html
http:/
Dear Sir,
"bool set_mux( int mux );"
This command is supported by GNU Radio 3.4.2 C++ API
but not GNU Radio 3.7.
In this case, how to control the MUX using GNU Radio 3.7 C++ API ?
http://gnuradio.org/doc/doxygen-3.4/classusrp__standard__rx.html
http://gnuradio.org/doc/doxygen-3.4/classusrp__st
On 12/16/2013 12:30 PM, Monahan-Mitchell, Tim wrote:
> My "hardware" is a 12.04 Ubuntu on top of VMWare:
Some hypervisors (not necessarily VMware) have been known to advertise
capabilities in the cpuid that they didn't then go on to actually
virtualize. Not saying that is the case here, but it i
I'm trying to learn the message passing API by reviewing the examples in
gr-blocks/examples/msg_passing. Message ports are not connected upon opening
GRC (this seems to be a gnuradio-wide problem - same thing happens with
gr-ieee802-11). I know the workaround is to open each hier block and build
On Mon, Dec 16, 2013 at 2:30 PM, Monahan-Mitchell, Tim
wrote:
> Hi, Nathan,
>
>> I think this is a known bug we're currently trying to squash
>> (http://gnuradio.org/redmine/issues/582).
>
>> I think this is the first report of a problem on x86 hardware; if we can't
>> duplicate it on our machin
Hi, Nathan,
> I think this is a known bug we're currently trying to squash
> (http://gnuradio.org/redmine/issues/582).
> I think this is the first report of a problem on x86 hardware; if we can't
> duplicate it on our machines would you mind if we bug you about testing out
> code in the follow
I think this is a known bug we're currently trying to squash
(http://gnuradio.org/redmine/issues/582). I don't think this is fatal
for you (unless you're trying to do development with VOLK) since VOLK
shouldn't try to use the ORC kernel that's broken.
Would you be able to add your processor inform
Hi Tom,
On Mon, Dec 16, 2013 at 7:27 PM, Tom Rondeau wrote:
> On Mon, Dec 16, 2013 at 1:08 PM, Miklos Maroti
> wrote:
>> Hi Guys,
>>
>> Ok, I have sent a pull request.
>>
>> On a related note: I do not understand the scaling performed in the
>> constellation constructor. Why are the constellati
On Mon, Dec 16, 2013 at 1:08 PM, Miklos Maroti wrote:
> Hi Guys,
>
> Ok, I have sent a pull request.
>
> On a related note: I do not understand the scaling performed in the
> constellation constructor. Why are the constellation points scaled to
> have average 1.0 amplitude? It prevents me to do in
Hi Guys,
Ok, I have sent a pull request.
On a related note: I do not understand the scaling performed in the
constellation constructor. Why are the constellation points scaled to
have average 1.0 amplitude? It prevents me to do interesting stuff
with constellations. Why cannot I set the d_scalefa
I would like to do spectrum sensing with GNU radio. Is there a good way to
get the raw output from uhd_fft.py (the value for each frequency)? I would
like to do this programatically (with code), rather than through a GUI.
I have tried doing spectrum sensing with usrp_spectrum_sense.py, and this
sc
Yes I would really like to know not to guess, in that case I could probably
be able to solve it. It is pretty like this: by disconnecting 10.7 MHz
cable the spike disappeared so I said ok it doesn't come from inside USRP,
but rather through coax cable. Since cable is shielded I assume it even
goes
First of all you need to _know_ (not _guess_), where it comes from, where it
goes to…
Ralph.
From: Nemanja Savic [mailto:vlasi...@gmail.com]
Sent: Monday, 16 December, 2013 16:48
To: Ralph A. Schmid, dk5ras
Cc: Patrik Tast; usrp-us...@lists.ettus.com; GNURadio Discussion List
Subject: Re:
On Mon, Dec 16, 2013 at 11:21 AM, bob wole wrote:
> I installed a fresh verison of gnuradio 3.7.2.1 and was testing some of the
> new features including the "correlate and sync"- A must from burst modems. I
> am using the "test_corr_and_sync.grc" example. Constellation and rest of the
> output loo
I proceed with source installation because I need to patch the code of
GNURadio, but I want to do this after trying the software, for this reason i
simply get the sources.
Francesco.
--
View this message in context:
http://gnuradio.4.n7.nabble.com/GNURadio-3-7-2-1-Installation-Problem-tp45364p4
I installed a fresh verison of gnuradio 3.7.2.1 and was testing some of the
new features including the "correlate and sync"- A must from burst modems.
I am using the "test_corr_and_sync.grc" example. Constellation and rest of
the output looks fine. However, when I plot the "phase" output of
"polyph
Hi Marcus,
> Anyway, I think Miklos is right: There is an error in calc_soft_dec in
> using the pre_diff_code even in the case that it is not set or its
> application disabled.
>
> Miklos, would you be as nice as to file a bug for that? You're the one
> who successfully diagnosed that.
Can you gu
Hi,
Try a 1/4 shorted stub at 434 MHz (at the antenna).
Patrik (who said many times *not my fault* but usually is...)
On Mon, 2013-12-16 at 16:26 +0100, Nemanja Savic wrote:
> Hi,
>
>
> i don't understand what can I do in this way with balun. Antenna is
> matched very well I think, since I cop
> What's your processor?
My processor is
Intel Core2 CPU T5500 @ 1.66GHz
>
> Can you send the full output of "ctest -V -R volk"? The fir filter
> failures are likely a result of the VOLK issues. And don't worry about
> the codec2 failures (unless you're trying to use it).
Typing ctest -V -R vo
Well, maybe I can use spectrum analyser with proper antenna, but what can I
achieve with that. If I see peak, I still have a problem to attenuate it.
On Mon, Dec 16, 2013 at 4:36 PM, Ralph A. Schmid, dk5ras
wrote:
> Take a handheld scanner or a UHF walkie talkie, tune it to the LO
> frequency, u
Take a handheld scanner or a UHF walkie talkie, tune it to the LO frequency,
use a paperclip or some similar 2cm piece of wire as antenna, and start
sniffing with this improvised probe for the leakage.
Ralph.
From: USRP-users [mailto:usrp-users-boun...@lists.ettus.com] On Behalf Of
Nem
Hi,
i don't understand what can I do in this way with balun. Antenna is matched
very well I think, since I copied reference design from TI.
I am sure that spike comes from WBX LO because when I change center
frequency the spike also shifts. I'll remind about the configuration again:
USRP1 with WBX
Hi,
Try finding ferrites for your frequency (11 MHz) and google on BalUn
(balanced to unbalanced), http://en.wikipedia.org/wiki/Balun
You could also do it with COAX, impedance match using the Smith Chart,
if your antenna impedance is known eg
http://en.wikipedia.org/wiki/Smith_chart
Very usual i
On Sun, Dec 15, 2013 at 10:58 PM, Maria Stevens
wrote:
> On Fri, Dec 13, 2013 at 3:58 PM, Maria Stevens
> wrote:
>>
>>
>>> > So, Only case 1 is working for me. I am not using any custom
>>> > gnuradio-block in
>>> > my receiver. Major blocks in my demodulator chain consists of FIR
>>> > filters,
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Hi Phil, hi Miklos,
as far as I can tell, the default constructor of constellation doesn't
initialize d_pre_diff_code, which is correct (well, kind of correct)
considering that it does not set any constellation points, either.
So I guess both members
On Mon, Dec 16, 2013 at 8:16 AM, Miklos Maroti wrote:
> Hi Marcus,
>
> Ok, that makes sense. It does not crash with QPSK, but it does with
> BPSK and 8PSK, and BPSK and 8PSK do not set the pre_diff_code. This
> explains why there is crash in one case and not the other. Although
> neither sets the
I have a following doubt here: there are two cables, one that brings 10.7
MHz if signal from external rf frontend to the usrp, and utp cable that
provides power and control signals for rf frontend. My first doubt was that
WBX LO signal is directly induced in the lines on LFRX board, but as soon
as
On 12/16/2013 08:16 AM, Miklos Maroti wrote:
> Hi Marcus,
>
> Ok, that makes sense. It does not crash with QPSK, but it does with
> BPSK and 8PSK, and BPSK and 8PSK do not set the pre_diff_code. This
> explains why there is crash in one case and not the other. Although
> neither sets the apply_pre
Hi Marcus,
Ok, that makes sense. It does not crash with QPSK, but it does with
BPSK and 8PSK, and BPSK and 8PSK do not set the pre_diff_code. This
explains why there is crash in one case and not the other. Although
neither sets the apply_pre_diff_code, so even QPSK should not set
pre_diff_code.
I
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Well, after having a debug build and then adding a lot of "volatile"s
into the code at the crashing function, it looks as if the
d_pre_diff_code of the constellation has size 0; and thus, you can't
access the 0. (read: first) element. How this could ha
Ha, that exactly is my impression, regarding the pybombs thing – but it is a
time ago when I have tried it, I guess things work out much nicer now, but I
must admit, I use pybombs only as a source of information, to find out what
interesting gr stuff may be available. Then I simply install and c
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This is almost always caused by network-manager "managing" your device.
A simple solution is to first stop NM:
service network-manager stop
and then configuring your device as you did.
Also, you can try to configure network-manager to assign a static
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