Bob McGwier wrote:
And GPU's are going to become commodity priced quickly and possibly even move
into the GPP and replace older ways of doing floating point. With Nvidia CUDA,
you can write code for your GPP, call GPU with intrinsics to get pretty quick
payback while a better longer term stra
Philip Balister wrote:
Bottom line: companies are still "funny" about doucmentation for high
end products, but attitudes are changing very slowly.
Philip
Hello,
Sometimes it seems the chip makers are really in the documentation business.
I was interested in the Marvell 88F5182 SoC as it wa
John Ackermann N8UR wrote:
Hi Matt --
Got things built and usrp2_fft.py working (more or less).
Just FYI, on my 3 year old Thinkpad T42 laptop with 1.6 GHz Pentium M, I
can display about 4MHz of spectrum (decimate 25) with good results.
Trying to show 5 MHz works, but occasional flakiness resul
Eric A. Cottrell wrote:
There does not seem to be a debian package for mb-gcc but I have not
really searched.
Hello,
I found the USRP2 faq was updated with firmware compile information.
The AEMB soft processor (Microblaze clone) uses the Microblaze gcc tools
and scripts provided by Xilinx
Matt Ettus wrote:
John Ackermann N8UR wrote:
Hi Matt --
Any hints for getting started? In particular, what needs to be done to
talk to the usrp2 via the ethernet?
The first step is to update to the latest svn for the entire gnuradio
tree, and get it all installed. Then, run find_usrps i
teka yemane wrote:
Hi guys,
Does any body has the source code and/or the algorithm for IMBE
vocoder to decode P25 signals?
I am doing a project on P25 software radio receiver and I need the
IMBE vocoder source code.
Thanks,
Teka Yemane
Tobias Gresch wrote:
P.S. I had to install sdcc-nf packet instead of sdcc to make the
configure script
pass.
Hello,
I found the same on Debian Lenny as well. The USRP component needs
asx8051 and 8051 tools are only in the sdcc-nf package. GNURadio built
on new Debian-based distributions wi
Hello,
I am planning on going and bringing my USRP and a few radios and like
stuff, like FT-817, 2 or 3 scanners, Icom 2500 with DStar/P25, WinRadio,
antennas, cables, and splitters.
I do not have any projects to show in the project room but would be
willing to help show off GNURadio. I am
Johnathan Corgan wrote:
Eric Cottrell wrote:
I was able to compile GNURadio on Debian Lenny. Here are some rough
notes as to the packages needed to compile GNURadio with ALSA and
USRP support. I used a recent GNURadio version from the subversion
repository trunk.
Just FYI--the Ubunt
Philip Balister wrote:
On Fri, Aug 1, 2008 at 6:31 PM, Eric Brombaugh <[EMAIL PROTECTED]> wrote:
On Aug 1, 2008, at 1:58 PM, Philip Balister wrote:
I've been talking to a friend (he knows FPGA stuff much better than
me) about using the expansion port to communicate with an FPGA via a
SD
Eric Blossom wrote:
On Mon, Jun 16, 2008 at 03:00:31PM -0400, Eric Cottrell wrote:
Hello,
I occasionally travel and want to take GNURadio with me. I wonder
what laptops or small form factor systems (like ITX) work well with
GNURadio.
My current laptop, a Z60t, uses a 1.7 Pentium M. It is
Thinking over the design of the Mode-S/ADS-B receiver I have a possible
improvement. It changes the serial method of demodulation to a parallel
block method.
Mode-S/ADS-B is a smaller bandwidth signal in a wider bandwidth channel
of 8 MHz. There is a frequency tolerance of +/- 1 MHz. Desire
Bino Oetomo wrote:
Hello
Eric A. Cottrell wrote:
Hello,
The code is still a work-in-progress. The hardware used, the USRP
and DBSRX board, costs as much or slightly more than the RadarBox or
SBS-1. It might be possible to do a simplified hardware board but I
am not a hardware engineer
Bino Oetomo wrote:
Dear All
I'm just searching about low cost ADS-B Receiver/Decoder solution.
First, I found most people using SBS-1/RadarBox. They need to use
propietary BaseStation software.
But there is pio that looks like have a good progress on handling the
output for linux and OS-x
htt
Philip Balister wrote:
I've received a Beagle board and started testing the USRP connection.
(Still needs work) I've had several requests for more information so I
thought a photo would help people understand the possibilities.
http://www.flickr.com/photos/[EMAIL PROTECTED]/2439256116/
Philip
Gregory Maxwell wrote:
On Mon, Mar 24, 2008 at 11:24 AM, Jeff Brower <[EMAIL PROTECTED]> wrote:
[snip]
> Using a AMBE or other codec chip is part of the hardware versus software
> decision. We want to do everything in software but there are
> limitations.
[snip]
Agree. In the
Hello,
I got the DV Dongle friday and it seems to work. I downloaded an
application to decode DStar on the computer but DStar is not very
popular in the area yet. I have not decoded any DStar voice so far.
I only did a AMBE loopback test.
I got concerned because all the application software I
Rick Parrish wrote:
Jeff Brower wrote:
All the standardized codecs that I know of, both ones with IP rights
requirements and free ones, provide a reference design, typically
fixed-point C code plus test vectors. I wonder why DVSI has not done
the same.
Perhaps the APCO and TIA committees did
Jeff Brower wrote:
Eric-
- Start Original Message -
Sent: Wed, 19 Mar 2008 23:29:57 -0400
From: "David I. Emery" <[EMAIL PROTECTED]>
To: Rick Parrish <[EMAIL PROTECTED]>
Subject: Re: [Discuss-gnuradio] DV Dongle - AMBE USB Device
On Wed, Mar 19, 2008 at 07:38:13PM -0500, Rick
Rick Parrish wrote:
> Eric A. Cottrell wrote:
>> I am also thinking of writing a APCO P25 Voice to AMBE2000 frame
>> converter and see
>> if the device can decode P25 as well. This may be a general IMBE and
>> AMBE codec.
>>
>
> I hope so. I looked at th
Hello,
One of the "problems" with DStar and some other digital voice systems is
the Patent and other IP considerations. DStar uses the AMBE codec which
is owned by DVSI. Icom uses a DVSI AMBE2020 chip in their DStar
products. One possible solution is to buy hardware that puts the Patent
and IP
Hello,
I just recently bought the other flash based sub-notebook (OFBsN) and
feel a little left behind with all this talk about the OLPC. :)
I got the Asus Eee PC, a black 4 GB Surf model with 512MB of memory. I
upgraded the memory to 2 GB already. It has 4GB of flash with an
external SD/SDHC s
Dave wrote:
> After years of development (involving close work with the EPRI, or
> Electric Power Research Institute, a power industry consortium of
> large utility corporations), PG&E has selected a new type of electric
> power meter from SmartSynch, Inc. [2] that can wirelessly transmit
> massive
Eric Blossom wrote:
> On Sun, Nov 11, 2007 at 11:48:55AM -0500, Eric A. Cottrell wrote:
>
>> Hello,
>>
>> Some general stuff I think needs to be updated in the wiki. Python-numpy
>> is used for current versions instead of python-numeric. Also guile is
>> nee
Hello,
Some general stuff I think needs to be updated in the wiki. Python-numpy
is used for current versions instead of python-numeric. Also guile is
needed to compile mblock and pmt. usrp needs mblock. I will do some
research and update the wiki.
Building Under Opensuse 10.3
Cppunit-devel is
Eric Blossom wrote:
> On Sat, Nov 10, 2007 at 08:41:24PM -0500, Eric A. Cottrell wrote:
>
>> Hello,
>>
>> I finally got my main computer fixed, hardware upgraded, and OpenSuSE
>> 10.3 installed. I noticed going through the wiki instructions when
>> installin
Hello,
I finally got my main computer fixed, hardware upgraded, and OpenSuSE
10.3 installed. I noticed going through the wiki instructions when
installing gnuradio in 10.2 and now 10.3 that one command maybe wrong
at http://gnuradio.org/trac/wiki/UdevConfig. Currently it is:
Add a user to
Hello,
I noticed today that OpenSuSE 10.3 is just released so I browsed
around. I will be upgrading to 10.3 in a few days after download.
I am interested in the PS3 as well so I thought it was great that it is
directly PS3 installable.
http://en.opensuse.org/PS3
I remember some comments that Py
Tom O wrote:
>
>
>>
>> Hi Eric,
>>
>> When I run usrp_mode_s_logfile.py I get:
>>ImportError: cannot import name air
>>
>> Can you help me out?
>>
>> Tom
>>
Hello,
air is the name of the python library that contains the gr-air blocks.
Make sure you compiled and installed gnuradio prop
Matt Ettus wrote:
> Eric A. Cottrell wrote
>> One thing to try is to use the scope program to set the threshold. The
>> default is low for alot of front ends including the DBSRX. The DBSRX
>> tends to be deaf. Also I find a gain setting of 32 to 36 seems to work
Martin Dvh wrote:
> Hi Eric,
> I tried out your code.
> Does it run on your machine in realtime?
Yes. It works quite well on my Core 2 Duo.
> I have a dual-core athlon X2 3800 and both processor go to 100 % when I run
> it.
> (I didn't know gnuradio could use both processors , I though we still h
Matt Ettus wrote:
>> I need to adjust the padding of a structure to eliminate buffer
>> warnings.
>
> There really isn't any need to get rid of the warnings unless you find
> that it is a big performance hit, which is VERY unlikely.
>
>> I noticed that sometimes it occurs on only one of several
Hello,
Well my first commit and I fell flat on my face. I committed the source
directory for the Mode Select code but not the actual source files.
This is fixed.
I am using the kdesvn tool which seems to work good once you figure out
the difference between the add and the add recursive commands.
Hello,
I finally checked in the infamous Mode Select code to
branches/developers/wb1hbu/wip and I am glad this portion is done.
I spent a couple of days cleaning the code up a little. I also added
some features. Likely I missed using a few neat gnuradio functions.
There is a usrp_oscope_ms.py
Matt Ettus wrote:
> Bandwidth:
> When Maxim states that their maximum LPF bandwidth is 33 MHz, they
> mean one-sided bandwidth (i.e. 0 to 33 MHz). Since it is used in a
> direct conversion IQ system, that actually gives a 66 MHz bandwidth (-33
> MHz to +33 MHz). Since that is beyond nyquist f
Hello,
Some people may think that I have lost interest and dropped this
project. "Neigh, Neigh" as Mr Ed would say.
It just took some time because of illness, business trips, having to
rethink the implementation. The receiver now sends signal attributes
along with the sample and each block adds
Tom Rondeau wrote:
> Matt Ettus wrote:
>> Eric A. Cottrell wrote:
>>
>>> Hello,
>>>
>>> The processing of pulses into data requires me to keep track of valid
>>> pulses (following samples are above threshold) and leading edges (sample
>>&g
Hello,
The processing of pulses into data requires me to keep track of valid
pulses (following samples are above threshold) and leading edges (sample
is 6 dB or more than previous sample and following sample is 6 dB or
less than current sample). I also want to indicate preamble start and
pass tim
Matt Ettus wrote:
> Martin Dvh wrote:
>> Hi all,
>> Is anybody working on DAB, RDS,DRM, HDradio or OFDM at the moment.
>
> Actually, Tom, Eric, George, Thibaud, Bob, and myself are all at
> Virginia Tech this week, and we're working on OFDM. We just checked in
> some working OFDM code in the trun
Martin Dvh wrote:
> Hi all,
> Is anybody working on DAB, RDS,DRM, HDradio or OFDM at the moment.
> I will probably be working on all of these in the near future and was
> wondering what the status is of these and where to find what.
Hello,
I have some interest in IBOC. iBiquity has some informat
Matt Ettus wrote:
> Chris Stankevitz wrote:
>> Matt Ettus wrote:
>>> Unfortunately, I had to cancel my trip to Dayton at the last minute.
>>> Ettus Research will not be represented there this year, but we hope
>>> to be back next year.
>>
>> What's going on in Dayton?
>
> The Dayton Hamvention, s
Steve Bunch wrote:
> What I noticed eventually by accident was that the beagled background
> process, which is enabled by default in Fedora Core 6, kicks in when the
> console of the Linux box goes idle for a while (screen saver kicks in),
> and wants to consume 100% of CPU time to index my files.
Eric A. Cottrell wrote:
> Hello,
>
> I got my new Core 2 Duo system up and running with GNURadio. When I
> installed Suse 10.2 64 bit I also selected install the 32 bit packages.
>
> My Mode S code works and usrp oscilloscope work but when I run the
> usrp_fft.py I get a c
Boris Maryshev wrote:
> Great news indeed, but still no code in svn?
Hello,
I am planning post-Dayton for svn. Things are not complete.
I got some panel mount N connectors and made up a simple 1/4 wave
groundplane for 1090 MHz. I tie-wrapped a 40 foot or so extending tent
pole to my back deck
Hello,
I went to the local electronics store and got a 2 Ampere Car Adapter.
http://www.velleman.be/fr/en/product/view/?id=350662
I tried it last night and it seems to work. I was able to use the USRP
in the car with my laptop.
I may get something bigger at Dayton since I have a number of mobil
Hello,
Is there a off-the-shelf product to power the USRP from 13.8 volts? My
understanding is the USRP needs a couple of amperes at 6 volts. The
best I saw was 1 Ampere maximum output.
73 Eric
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.
Hello,
I am attending Dayton this year and it is good that I will not miss out
on learning more about SDR. I plan on bringing a good portion of my
listening shack, including my USRP, to monitor Radio Communications in
the area. :) My hotel is around 12 miles from Dayton International so
maybe I
Hello,
I got Mode S and ADS-B receiving working. I dump the messages to
standard output for redirect to a simple log file. Simple programs take
the log and decode it into English. I have not decoded all the messages
yet like Airborne Velocity.
Tick: Sat Apr 28 08:43:52 2007
Extended Squitter
Hello,
I got my new Core 2 Duo system up and running with GNURadio. When I
installed Suse 10.2 64 bit I also selected install the 32 bit packages.
My Mode S code works and usrp oscilloscope work but when I run the
usrp_fft.py I get a constant error message and no display. The error is
in line 2
Martin Dvh wrote:
> Cory Papenfuss wrote:
>>> I have a digital-wip branche which is work in progress for digital QAM
>>> stuff
>>> and
>>> general-wip which is my work in progress for general gnuradio things
>>> (latest addition is gr-cxadc, a driver for cx2388x capture cards to
>>> use as a genera
konvak wrote:
> hello all,
> I am thinking about building loop antenna for 3-6 MHz to
> receive some DRM stations. As I understand it the loop antenna is parallel
> resonant circuit so without any amplifier the parallel res. circuit should
> look into big impedance(~1 MOhm) to get hi
Hello,
I am making good progress.
The first couple of weeks or so (months?) I was collecting information.
I managed to get some design articles about Mode S transponders,
various protocol specifications, and comments. I was able to decode
some packets by sight using the oscilloscope program. T
Hello,
When I build the doxygen documentation, both the GNURadio and USRP
documentation are built. The problem is both are installed in
/usr/local/share/doc/gnuradio-3.0svn/html/ and the USRP index file
overwrites the GNURadio index file. Other files are likely trashed as
well. I would like to
Eric Blossom wrote:
>
> This is great! Looking forward to what you come up with!
>
> Eric
>
Hello,
I was able to modify the oscilloscope sink to trigger at a signal level.
I noticed a lot more activity after the proper triggering. I do not
get really strong signals except when aircraft are n
Hello,
Yet another project I am interested in. Number 157 on the list. 8)
ADS-B is an interesting system that allows aircraft to send position and
other information. It uses the 1090 MHz Transponder frequency.
http://www.garmin.com/aviation/adsb.html
ADS-B is more progressed over in Europe. I
Hello,
Currently I am using a Thinkpad Z60t laptop for GNURadio using OpenSUSE
10.2. It has a 1.73 GHz Pentium M. It seems to do a good job but I
have hit the processing wall a few times. Most turned out to be
programming errors that ate up CPU cycles. I do seem to always get an
error from the
Brian Padalino wrote:
>> I would have to co-ordinate the receivers exactly to do this... Could
>> it be possible to supply a stable clock over Ethernet? Couple it to
>> the -48VDC? =)
>
> I highly doubt that you can do it over ethernet, but you may be able
> to supply a 10MHz reference clock over
Hello,
Tuesday I am heading off to the biggest pencil in the world for the
Winter SWL Fest in Kulpsville. I am going to do some informal demos of
the USRP and GNURadio. They have a digital radio table in an exhibit
room where they demo DRM. This year they want to do some demos of HD
Radio and I
Weber, Michael J. (US SSA) wrote:
> Eric, I also recently received some enclosures... this is my two cents,
> YMMV, etc:
>
> If the fan is installed such that it blows in onto the USRP, it will
> receive the direct benefit of the airflow. However, the fan makes a lot
> of noise in this configurati
Hello,
I managed to blow the smd fuse on my USRP. It seems to be a 1 Amp 603
fuse. Is there a certain one I need to buy? I would like to order one
from Mouser.
I got the enclosure recently. Where do I plug the fan in? Should the
fan exhaust the air from the enclosure?
73 Eric.
___
Hello,
What are PS3 owners on the list using for video displays? Do I need a
HDMI monitor with HDCP? The info I have says no video out the HDMI port
at all if the monitor does not have HDCP.
73 Eric
___
Discuss-gnuradio mailing list
Discuss-gnuradio
Frank Brickle wrote:
> Robert McGwier wrote:
>> They are $599 at my local Target. So much for bargains at Costco.
>
>> Eric A. Cottrell wrote:
>>> I was at my local Costco tonight and noticed they have the 60GB PS3 for
>>> $699. I almost bought one but d
Hello,
I was at my local Costco tonight and noticed they have the 60GB PS3 for
$699. I almost bought one but decided to check a Costco in NH first.
73 Eric
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listin
Hello,
I heard about this on the DRM list and bought one today. A lot of Icom
PCR-100 receivers are on eBay with a Buy Now of $75 each. Ships to US
addresses only.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&sspagename=STRK%3AMEWA%3AVRI&viewitem=&item=140080487323&rd=1&rd=1
Receiver does not
Johnathan Corgan wrote:
>
> I'm not aware of anything formal that exists now.
>
> Eric, Matt, and I are looking into it and trying to judge demand for a
> "deep immersion" class that goes beyond just GNU Radio/USRP and more
> fully covers SDR, DSP, and RF design in general, using GR/USRP as
> tea
Johnathan Corgan wrote:
> Corgan Enterprises now offers a two-day, on-site training course for
> beginning and intermediate GNU Radio software and USRP users.
Hello,
Sounds interesting. Is there any off-site training for GNU Radio and
USRP? Maybe in connection with DCC or other event? Somehow I
Hello,
I want to do some work with QAM and C-QUAM. Is there a method to view
phase information using the I/Q signals? I can not seem to find a
vectorscope and constellation sink.
73 Eric
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http
Bob McGwier wrote:
> I understand the need and/or desire to do this natively but we really
> want to be doing cross platform for this target. 256 MB is not enough
> for these large compiles.
>
>
> DO NOT get on Terra's Yellow Dog pre-installed PS3 list if you have not
> already done so. They
Hello,
So has anyone got their PS3 yet? A store claims to have the 60 gb model
a not too far distance away and I am tempted. But I do not want to be
first on the block to get one.
73 Eric
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
ht
Hello,
Here is a bit of code that will receive SCA analog subcarriers of FM
Broadcast Stations using the USRP. It is a modified version of
usrp_wfm_rcv.py.
Common SCA frequencies are 67 kHz and 92 kHz. SCA is used for Reading
Services for the Blind, Background Music, Foreign Language Services,
Eric Blossom wrote:
> On Sun, Dec 31, 2006 at 01:42:31PM -0500, Eric A. Cottrell wrote:
>> Hello,
>>
>> Thanks to both of you for the information. I got the RX PGA gain up all
>> the way. I rewound the isolation transformer to be 1:1 with 14 turns.
>> I still hav
Eric Blossom wrote:
> On Sat, Dec 30, 2006 at 07:23:19PM -0800, Matt Ettus wrote:
>> Eric A. Cottrell wrote:
>>> Hello,
>>>
>>> Does anyone use a AOR 5000 as a front end for the USRP? The docs for
>>> the USRP say that it is not very sensitive but I th
Hello,
Does anyone use a AOR 5000 as a front end for the USRP? The docs for
the USRP say that it is not very sensitive but I thought the IF Output
from a AOR 5000 could drive it. It seems to work for strong signals but
I am getting the impression that a 10 dB or so amplifier would improve
the si
Matteo Campanella wrote:
> Search the list on the subject - I did a posting some time ago about
> using DRM decoder with USRP bymeans of tmpfs ram based named pipe for
> interface...
Hello,
I looked it up and tried it with the analog demodulator. The local AM
station came out with half speed aud
Charles Swiger wrote:
> Hi Gang - Did somebody have the DRM decoder working with a gnuradio
> receiver? The main issue is feeding the sound from gnuradio into DReaM,
> somehow, other than using two soundcards. I have DReaM 1.6.25 compiled.
>
> http://sourceforge.net/projects/drm/
>
> TIA
>
> --
Hello,
I want to interface GNURadio to a software decoder. The output could be
regular audio, "discriminator" audio, or 12 KHz IF. I could hook up my
iMIC and jumper the line output to the line input but this is not a neat
way to do it.
Is there a loopback audio device, maybe using Jack? Maybe
Robert McGwier wrote:
>> Now if we can only get our hands on one or more of these PS3's. If you
> want to get a real laugh, search for PS3 using froogle and look at all
> of the listings in the thousands of dollars. MADNESS.
>
> Anyway, now that we have very good information, I have placed
Matteo Campanella wrote:
> Hello Eric, I am basically doing the same you did on the RDS code and
> specification; right now I have introduced syndrome based sync and
> indeed it looks like it get synced much faster. I am using the wfm
> receiver (non pll), but, not having implemented the loss of sy
Hello,
Months ago I bought a USRP. Nice piece of Hardware but I did not really
dive into GNURadio until this weekend. Still learning about it. I am
also busy maintaining software that decodes Trunked Radio Control
Channels and LTR variants like NTS Passport.
I am a Boston area Ham and member o
79 matches
Mail list logo
