On 1/3/22 13:04, Glen Langston wrote:
Hello and Happy New Year to all,
We’ve just released a version of the Raspberry PI OS that works with Airspy R2
and Airspy Mini,
as well as SDRPlay RSP1A, PlutoSdr and RTL-SDR.
Nicely done!
[I know, I know, necro-replying... but the thread has recent posts.]
On 5/26/20 2:59 PM, jean-michel.fri...@femto-st.fr wrote:
..., we have put together a short documentation
on using Buildroot to generate an image supporting GNU Radio including
Osmosdr DVB-T source, USRP (libuhd) sources an
On 11/25/21 5:52 PM, Marcus Müller wrote:
Hi Lamar!
...
I don't want to get into this again, honestly, we have like six or
seven threads on this mailing list.
Marcus,
Sorry if I come across as a bit abrasive; that's not the intent. Nor am
I wanting to overstate the point, or just co
On Nov 25, 2021 8:15 AM, Marcus Müller wrote:...
Honestly, a RPi4 would just go to waste with me! If you want to crowdsource one for the
greater good of the SDR community, I'd say: Radioastronomy outreach, or ham radio, that's
the two things I'd think a RPi4 would make the biggest impact.Rad
On 1/13/21 10:13 AM, Marcus D. Leech wrote:
On 01/12/2021 02:51 PM, Lamar Owen wrote:
I'm trying to debug and patch the UHD stack for USRP1 with DBS-RX
daughterboard; it just quit working, and while I've reported to the
UHD list no action has been taken to fix the regression.
I w
us back of now.
Yes, I know PROGRESS. And progress is certainly needed; but
progress can be painful. So while I'm not complaining per se, I do want
to echo the concerns that especially Glen has raised.
--
pari <https://www.pari.edu>
Lamar Owen, /Chief Technology O
On 1/5/21 4:27 PM, Glen Langston wrote:
Dear Gnuradio folks,
Again, I hope the email finds you all well and successful.
This email notes that Gnuradio Radio Astronomy software can be used to measure
the
Noise Figure of amplifiers. We’ve been working on documentation of the process
for home r
On 04/28/2016 01:28 PM, Marcus Müller wrote:
Do you *really* want to use GRC on the C2? Doesn't make much sense – a
flow graph designed on a normal PC works identically on your C2 (iff all
the blocks are there, too).
And although I don't really *plan* to use GRC directly on the C2, I just
had to
On 04/28/2016 07:40 PM, Marcus Müller wrote:
before I head to bed:
I was actually thinking about using a SPEC from any other platform (ie.
prolly x86_64) and just fixing a few flags, if at all necessary – the
cmake build system will usually deal just fine! So really, if you want
bleeding edge, go
On 04/28/2016 03:43 PM, Tom Rondeau wrote:
I would think "probably not" within the 3.7 API version series. There
have been plenty of additional features and bug fixes, but whether or
not they are critical depends on your needs and applications. But I'd
say the burden of proving "can't avoid" is
On 04/28/2016 03:43 PM, Tom Rondeau wrote:
You can see the criteria we have for our version numbering here:
Tom, thanks for the pointer and for the answers.
On Thu, Apr 28, 2016 at 3:31 PM, Lamar Owen mailto:lo...@pari.edu>> wrote:
And that's the crux of my question: con
On 04/28/2016 02:56 PM, mle...@ripnet.com wrote:
I use all of my Odroids that run GR in a "headless" mode--I find no
reason to do flow-graph development on the device itself, and
processing flowgraphs in radio astronomy just don't really need a
graphical component to be running on the Odroid.
[Reply comments in-line.]
On 04/28/2016 01:41 PM, Marcus Müller wrote:
It's not about not updating – it's about not breaking possible existing
usage! RH has to make sure that software stays binary-compatible, so
they can't use a different version if it has a different ABI.
I not only am aware
On 04/28/2016 01:42 PM, West, Nathan wrote:
On Thu, Apr 28, 2016 at 1:31 PM, Lamar Owen <mailto:lo...@pari.edu>> wrote:
Does anyone know of any fixes since 3.7.5 that might be considered
'can't avoid?'
Personal opinion incoming:
Normally I strongly advocat
Marcus,
Thanks for the information.
Once EPEL is available for AArch64, it won't be hard at all, as there is
already a GNURadio 3.7.5 package with SPEC and such, and at that point
it won't be difficult to do. I sent a separate message about that,
though.
But at the moment EPEL is not a
On 04/28/2016 01:28 PM, Marcus Müller wrote:
Do you *really* want to use GRC on the C2? Doesn't make much sense – a
flow graph designed on a normal PC works identically on your C2 (iff all
the blocks are there, too).
I'm doing the 'whole enchilada' for my own educational purposes. The
produ
The EPEL repository for RHEL and its rebuilds currently has a slightly
older version of GNUradio in the repo, a 3.7.5.
I filed a bug in the EPEL bugzilla as an RFE to update to 3.7.9, but I
got an answer back that it is EPEL policy (much like RHEL) to not update
to latest version unless it 'ca
On 04/28/2016 12:19 PM, Marcus Müller wrote:
Dear Owen,
I'd say the fact that you quickly eat up all your RAM is the best
indication for it possibly being a good idea to cross-build for the
Odroid on a PC.
I've looked into this, but in this particular case I need to build the
dependencies fir
On 04/28/2016 12:44 PM, Anon Lister wrote:
Nice. I just did an x64 el7, so I only had to source build a few
packages. I'd be curious to know what kind of performance you get on
that platform.
I'll let you know. I am so far very pleased with the performance. Quad
2GHz ARMv8 cores with 2GB
I have been successful in getting CentOS 7 onto an ODroid C2. This is
the AArch64 version; armv8, 64-bit.
I did run into a bug in build-gnuradio, however. The logic that
determines the release number for CentOS/RHEL/SL 6 is flawed. The logic
looks for the pattern '*elease*6*' in /etc/redhat
On Thursday, July 08, 2010 12:01:53 pm Marcus D. Leech wrote:
> I have a PCIe x16 slot on the mobo, it's a GigaByte GA-880GM-UD2H, so I
> guess what I really need is a
> PCIe GiGE card.
Broadcom is the biggest player in this market; eBay item # 150455393659 is one
such example and only needs a
On Friday, July 02, 2010 04:40:42 pm Marcus D. Leech wrote:
> I suspect that my GiGE NIC may be dropping packets. It's an
> RTL8168d-type chip, according to "dmesg".
>
> Are there known-to-be-good-with-GnuRadio NICs for PCI with low-profile
> brackets out there? This is for
> a 2U server platf
On Thursday, July 01, 2010 11:35:13 am Marcus D. Leech wrote:
> Oh, I agree that it's in the tradition of Gnu Radio filters. It's just
> that after you've finished reading
> paper after paper about FFT filters for de-dispersion, with everything
> being expressed in the
> frequency domain, it's
eing secured is 'how do I
manipulate the operating frequency, power, and mode of this radio?'
Discussion, anyone?
--
Lamar Owen
Chief Information Officer
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
__
ou referring to smoothing FFT bins over time or over frequency?
General smoothing over time and frequency would be great; smoothing over time
is doable now with averaging.
--
Lamar Owen
Chief Information Officer
Pisgah Astronomical Research Institute
1 PARI Drive
pport built. At least the last time I built on FC5 that
was true, but that was older GNUradio.
> I went from new toy to Fedora core 5 compiling jack, dttsp, and
> gnuradio in a week. We can do business with this. They are available
> in numbers (at $599) at my local target and wa
ing like that.
The btaudio driver will work with baudline; one day I hope to get baudline
and the USRP hooked together through JACK, but not yet.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.
asicRX lower frequency cutoff is around 100kHz; lower frequencies don't
pass the input transformers. You need an LFRX to go below 100kHz.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-
alkie talkie ?
As a clarification, you do not need the BasicRX to use the TVRX unless you
want the second channel.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
me with the USRP code.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
'm just curious, as I
didn't see much discussion on the list prior to this (or I'm just blind to
the messages, one).
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
__
back to an ALSA input? Purpose for either is to directly use the USRP with
Baudline.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss
at stuff back up once I
get plone running on lamarowen.net.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnura
ymers.com/radioastronomy) for more information on
the gr_radio_astronomy module, though.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnu
be too hard or anything, just relating the reality of Ettus
Research being a small, niche, manufacturer and unable to underwrite free
repairs (because the repair is not going to be free for Ettus).
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1
ite. All the verilog code is in the USRP source
distribution. Matt can give you more details.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
D
shes are 85
feet in diameter, but rather old. This means we have a job just keeping them
running, and keeping up with lightning hits and such. But things are
a'happenin' albeit somewhat slowly.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Ins
recording of the 20Khz or so of post-detector signal.
Hmm, sounds like a candidate for pulsar detection testing. After all, the
pulsar looks just like a radar, with a rotating continuous beam
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
itory rsynced to the master repos helps on the bandwidth side).
The CentOS updates comprise far less volume on the machines that don't use
the kde-redhat repository; those that do use kde-redhat can get a hundred MB
or so per month since that repository includes later OpenOffice.org packag
eding edge
have conspired to cause me to go with FC5 the needs being driven by
GNUradio in part, and Plone in part.
> But with YUM, it's relatively painless to "keep up".
Depending upon your bandwidth, at least.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomic
t; result of 'r' being zero on return from
> > > r = usrp.tune(foo).
>
> Does the hardware in question have two Rx daughterboards installed?
> Perhaps you were neglecting to set the -R option
> on the command line?
Yes, the particular USRP Marcus was using had a Basi
build on CentOS 4, though. On FC5 the build was pretty
painless, once I found an SDCC package that worked.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
or wxPython (and its dependencies). I think it needs
python-numeric; been awhile since I've traversed the dependency chain for
GNUradio since FC5 has everything needed built.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28
d. Keep that in mind in the presence of interfering signals.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-
ax, unless you want to do chopped sampling like the
SDR-14 does at the higher bandwidth settings.
> 1. Building an USRP for such an embedded device.
The OpenEmbedded project builds usrp and friends, but not the GNUradio python
stuff.
--
Lamar Owen
Director of Information Technology
Pisgah
nd communications, and I for one
> would like to see as many students get their hands on this stuff as
> possible and provide the necessary cooperation and competition to push it
> to new heights.
Yea, and Amen.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Resea
o change engineering practice, we have to get students using
the tools. To get them using the tools incentives have to be provided.
Although, there are quite a few students using the GNUradio toolkit already.
Not directed at John, but to Al: none of these students or their faculty
deserve the epi
Seeing the traffic on Ptolemy, has anyone tried out kst (part of the KDE
project) as a backend? I'm going to, in my copious free time... :-)
KST: http://kst.kde.org
Claims to be "...the fastest real-time large-dataset viewing a plotting tool
available..."
--
Lamar O
can elaborate, being that he is employed in that field.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-g
On Wednesday 26 April 2006 16:25, Matt Ettus wrote:
> Lamar Owen wrote:
> > If it's true DSB AM, then just tune to one side, filtering out one
> > sideband, and treat it as single sideband. Would want to watch out for
> > aliasing, of course, from the rejected sid
ss you're real good, and set it so
that the aliased sideband folds into the passband perfectly... :-) the
sidebands are, after all, identical in AM.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
On Friday 21 April 2006 14:40, Lamar Owen wrote:
> On Friday 21 April 2006 14:25, Lamar Owen wrote:
> > Building gnuradio-core and friends now.
>
> gnuradio-core built and installed, passing its test suite.
> ditto gr-audio-alsa, gr-audio-oss, gr-usrp, gr-wxgui, gnuradio-exa
On Friday 21 April 2006 14:25, Lamar Owen wrote:
> Building gnuradio-core and friends now.
gnuradio-core built and installed, passing its test suite.
ditto gr-audio-alsa, gr-audio-oss, gr-usrp, gr-wxgui, gnuradio-examples,
gr-gsm-fr-vocoder, gr-howto-write-a-block.
Looks like it worked so
On Friday 21 April 2006 14:02, Eric Blossom wrote:
> On Fri, Apr 21, 2006 at 01:45:00PM -0400, Lamar Owen wrote:
> > I upgraded my box to FC5, and have been working on getting GNUradio/usrp
> > built. I ran into a problem building SDCC; I have gotten the 4/21/2006
> > snaps
n FC5.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
0
>instead.Once I've mastered all the tricks decoding ATSC RF stream, I'll
>move to USRP and play with it.
If you need help, I have an mc4020 here that's not installed anywhere that I
can plug in to a PC and try the build. I believe Eric or Matt or both have
one or more.
--
to get the HDTV
stuff running on the current code :-)
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnu
It seems as of 18:11 EST Sourceforge CVS is back up; I was able to get a
checkout of usrp. Yep, got a fresh checkout twice.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
, that's for sure
Although the last two defacements have been information truncations, deleting
most of the information.
Eric, I know the philosophy behind Wiki's, but, is it possible to combat the
wikispam in some way?
--
Lamar Owen
Director of Information Technology
Pisgah Astron
g it 'fixed' took a little while. Linux
Magazine's site has information (this is the UK Linux Magazine, BTW).
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
_
o maybe there are no series
caps.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists
ese. Published by Springer, 2004. ISBN 3-540-21119-5.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnu
n you use. The 2.6 kernel-supplied XFS code has
some problems, and you really need the latest SGI code instead. The CentOS 4
group is working on an XFS-enabled kernel with the newer code. Not sure
where SuSE and Ubuntu/Debian stand.
--
Lamar Owen
Director of Information Technology
Pisgah Astro
a broadcast engineer for 16 years, ten of which were on a full
time basis).
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio m
lower level usage.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mail
On Friday 13 January 2006 14:40, Marcus Leech wrote:
> I have a couple of temperature-compensated voltage-controlled crystal
> oscillators in cans.
>
> Anybody want 'em?
>
> They're made by CTS Knight, and have a nominal frequency of 10.240Mhz.
Yes. How much? Docs
nt gain of 256.
I would tend to agree; PowerPC is big endian, IIRC. So endian-agnostic
routines need to be used at the USRP level as well, it seems.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI
signed to be quite broadband, useful for
beam-forming from 29 to 47MHz.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing
we/eta/ for details on a big phased array project
being built at PARI. The short form: imagine repointing a dish after the
observation has been taken. 12 terabytes per day required storage. Big time
phased array; uses multiple Xilinx XC2VP30 boards (ML310) for the beam
forming calcu
[back onlist; my fault for not reply-all]
On Tuesday 20 December 2005 14:41, Eric Blossom wrote:
> On Tue, Dec 20, 2005 at 11:37:02AM -0500, Lamar Owen wrote:
> > Certainly. But if I save a file on one arch it should be able to be
> > played back on another without me having to
solder (Python),
you need to learn what each component does, and you need to a have a grasp of
what you want the result to do. Building devices from parts is non-trivial;
image having to build those parts. GNUradio is like a kit of IC's ready made
that you need to wire together and sol
board, and a USB headset (and a Linux laptop, of course) that would make a
killer multimode QRP 440 rig. I just need to make a frontpanel, so to speak.
But ergonomic engineers and designers are paid small fortunes for good
frontpanels from the hardware radio manufacturers. Frontpanel and
functionali
elease
> using the tarballs and did it install the docs for gnuradio-core?
Did you download the gnuradio-core-2.6-doc.tar.gz?
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-
display square waves at 500kHz, 1MHz, and 2MHz.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu
if it would be
of help. Solaris 10 should be closer to the Linux API; there is a linux
personality module for it, at least on i386 hardware.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
h,
and not as steep of skirts.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.g
gt; mount options to usbfs. Not sure if it is fixed in FC4.
Well, I'll admit to running the GNUradio stuff as root, but there are some
other reasons.
However, these are things that the RPM %post scriptlet will need to deal with.
Filing it away for future use :-)
--
Lamar Owen
Director
indeed has a date of this morning, other than
that I don't know which revision I have. Also, is there a quick way of
getting a status from the usrp to see which version of the various bits
are loaded?
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1
> On Tue, Oct 25, 2005 at 01:35:55PM -0400, Lamar Owen wrote:
>> To answer my own point, yes, the older code did impact the shape. Using
>> the latest CVS usrp_fft.py as a base instead of the version I used.
>> Using
>> the newer, I get consistent shapes; although
>>> On Tue, Oct 25, 2005 at 12:16:09AM -0400, Lamar Owen wrote:
>> With a decimation rate of 8 and a DDC center frequency at 10.7MHz, I see
>> better than -10dB at the band edge now, which is a greater than 20dB
>> improvement in flatness. Very nice.
> Attached a
>> On Tue, Oct 25, 2005 at 12:16:09AM -0400, Lamar Owen wrote:
> With a decimation rate of 8 and a DDC center frequency at 10.7MHz, I see
> better than -10dB at the band edge now, which is a greater than 20dB
> improvement in flatness. Very nice.
Attached are some captures of pl
> On Tue, Oct 25, 2005 at 12:16:09AM -0400, Lamar Owen wrote:
>> On Monday 24 October 2005 22:19, Eric Blossom wrote:
>> > Matt's been hard at work on the halfband filter for the FPGA, and it's
>> > in pretty good shape. As long as you're not using
dwidth easily with this.
I will attempt to try this out tomorrow on the PARI pulsar system, since it is
currently tracking CVS, and the FFT curves are well characterized against the
passband of the frontend there, and I know the hot-cold difference, passband
shape, etc really well at this p
except to build, etc). Of course, if you want to
build from source that is your prerogative. But a user shouldn't be forced
to do so to use the system.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.p
;rpmbuild --rebuild'
command (with a few --define options required for a clean build). I do that
often, since CentOS4/RHEL4 isn't a default supported distribution for
wxPython.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Ro
Widgets installed? More to the point, what does 'ls
-l /usr/lib/libwx*' say, and what does 'ls -l /usr/local/lib/libwx*' say?
If wxWidgets is in /usr/local/lib, did you make sure /usr/local/lib is
in /etc/ld.so.conf and run ldconfig after building wxWidgets?
--
Lamar Owen
Dire
go to the file?
You need to redirect stdout and stderr both; either using nohup to do it or
you can use the bash '&>' redirect, which is semantically equivalent to
'>file 2>&1' (See the bash man page (man bash) under the section 'Redirecting
Standa
On Friday 26 August 2005 02:19, Berndt Josef Wulf wrote:
> where do I find the current USRP firmware suitable to run CVS-current? Is
> it still the same as found in the usrp-0.5.tgz archive?
Try
http://comsec.com/usrp/usrp_fpga_rev2_2005_07_30.rbf
for this.
--
Lamar Owen
Director of Infor
ou need testers for some of this?
How dangerous to USRP hardware could tracking fpga CVS be? I see several
changes in the current CVS, and it looks interesting.
You must have read the Web fad article, seeing the All Your Frequency Are
Belong to Us code example. :-)
--
Lamar Owen
Director
rect execution on the hardware (without
writing a single line of Verilog). If you want to write a Verilog block to
help, you can, but you're not forced into it.
Incidentally, the 'SRC' in SRC Computers is a man's initials. A relative
unknown by the name of Seymo
and up to 6GB/s I/O bandwidth for things like
ADC's. They are not cheap.
We were going to do algorithm development on a USRP prior to spending the
hundreds of kilobucks for the MAPstation stuff.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Res
t; intervention. Does that mean its possible to send data from the USRP to
> multiple hosts connected on the same SCSI bus?
Yes.
> By the way I think that gigabit is 1Gbps full-duplex ie: 2Gbps.
Sure, if you are doing both transmit and receive. But you would be limited to
1Gb/s for receive-
-bit PCI-X U320 screamer.
4.) External and internal interfaces available.
5.) Ability to process and redirect streams from one USRP to another one
without CPU intervention over the SCSI bus.
Comments?
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Instit
em to remember a similar error back when I
first got my USRP with a TVRX (on side 1) and was trying to use the 2.5 code.
I've been tracking CVS for some time now, so I've forgotten the exact error I
got that first time, but it sounds similar.
--
Lamar Owen
Director of Infor
ns you zeroed, and the leakage is
defined by the window (which just happens to have the same shape as a filter
kernel, but I digress). Adding points on an FFT is basically the same thing
as adding taps on a filter, both computationally (in terms of CPU load) and
spectrally.
--
Lamar Owen
Dire
ir USRP with machines that don't have linux installed.
Is there a later iso than this one available now, or are we not up to that
yet?
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-
llows multiple machines to query the box, but doesn't do AAA,
which, in a control situation on a switched ethernet, is very bad.
There are significant non-bandwidth issues to using ethernet, and multiuser
operation is one of them.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomica
rself. :-) Power over Ethernet; in a guitar of all
things. Priceless.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
with the USRP is as a
time-domain-reflectometer and vector network analyzer. I will post progress
as I have progress (none yet, other than hardware being purchased).
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862
zero doppler hydrogen line frequency of approx 1420.4
> MHz. Anything to the left is receding, and anything to the right is
> approaching.
How did you get the flatter baselines? Was this through the DBS_RX or
baseband? Did Charles see this? :-)
--
Lamar Owen
Director of Information
1 - 100 of 121 matches
Mail list logo
