And finally, here we have it:
http://cyprus.cmcl.cs.cmu.edu/tmp/new_flex/success.jpg
I didn't completely understand the 2 stages of tuning... I had the first
stage down pat, but didn't understand the second, hence everything kind
of breaking once i tried it, and things not working until i got i
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. Mode-S/ADS-B has a 1 M
Hi all,
I'm new to GNU radio Software and USRP. We have recently purchased a USRP
Board with RFX900 and RFX2400 Daughter Boards for our Lab. I work in a
Telecommunications in PVAMU.
I've a decent expertise in C++ and object oriented Programming. I tried
figuring out how the whole system works by
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
OK, this is my last cry for help... I'm hoping you have an idea of what
I'm tuning wrong, Matt.
I have added print statements for every single _write_fpga_reg, pga_set,
_write_spi, _write_io, _write_oe, etc and I compare the function
calls by a standard python RFX2400 MIMO_b tune with my
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
http://piopawlu.net/200
Hey,
I trace the files which control benchmark_ofdm_tx/rx.py.
Initially, I thought gnuradio-core/src/python/gnuradio/blks2impl/ofdm.py is
loaded. However,
it seems not after I did some simple test. I saw benchmark_ofdm_tx/rx.py import
blks2 to control the parameter parser ( blks2.ofdm_mod.add_op
On Tue, Apr 29, 2008 at 02:01:24PM -0700, David Li wrote:
> Eric, George:
>
> I have another question. According to the mblock design documentation
> (from BBN) it's capable of handling both message blocks and gr blocks at
> the same time. Is this true in the current implementation? Does this
> me
This was one of the 2 major catches I mentioned in an earlier e-mail.
This is not implemented yet and is a major m-block limitation.
- George
David Li wrote:
Eric, George:
I have another question. According to the mblock design documentation
(from BBN) it's capable of handling both message b
Eric, George:
I have another question. According to the mblock design documentation
(from BBN) it's capable of handling both message blocks and gr blocks at
the same time. Is this true in the current implementation? Does this
mean we can utilize the existing gr DSP blocks inside a mblock?
- David
Hi Bob!
Right, when I side "wide circle", i didn't mean flat, i meant that the
circle seemed thick... as if there is a large variation in amplitude.
my newest graph seems a little better:
http://cyprus.cmcl.cs.cmu.edu/tmp/flex_graphs/flex_rx2en.jpg
Thanks,
George
Bob McGwier wrote:
George:
George:
The flattened ellipsoid is in the eye of the beholder. ;-). It isn't
really. It is the aspect ratio of your gnuplot. You are clipped and it
appears there is a slight DC bias on the I channel to plus DC (pushed
slightly to the right).
Bob
George Nychis wrote:
I'm getting a litt
So, I am finally able to decode something after setting the correct RX
mux... I suppose it was incorrect for this daughterboard.
Does the RX2 port need to be enabled for the RX/TX port on the card to
receive properly?
If I setup the RX as follows..
d_rx->_write_oe(d_side,POWER_UP|RX2_RX1N
Hey,
I add two parameters in gnuradio-core/python/ofdm.py
expert.add_option("","--onoff",type ="intx", default = 0,
help="set the number of use
multi_constellation decision [defalut=%default]")
for (i = 0 ; ihttp://lists.gnu.
I am having trouble transmitting data using benchmark_tx.py at carrier
frequencies higher than approx. 40Mhz using the Basic TX daughterboard? I
didn't have any problem transmitting an analog audio signal over carrier
frequency within board frequency range as well as any waveform using
usrp_sigge
On Mon, Apr 21, 2008 at 12:24:06PM +0900, Geof Nieboer wrote:
> All,
>
> After doing some 'proof of concept' with the VOR receiver (the phase
> comparator still isn't perfect, but bad weather has given me a marginal
> signal recently, so it's on hold for a tad), I've been really impressed with
> g
Yeah, looks better but still some offset on the I rail. The wideness of
the ring could be ISI(whats your BT?) in concert with carrier mismatch
spin if you are using two boards. The only reason I say this is that
the width does not look to be very noise like. Just a guess of course.
:)
-Jeff
-
On Fri, Apr 25, 2008 at 07:25:44PM -0400, Wireless Monster wrote:
> Hi all,
>
> Is there a way to reduce the gain of the RFX900 board?
>
> Using the "self.subdev.set_gain(self.subdev.gain_range()[1]/Att)" function
> does not seem to change anything.
>
> Thanks!
This is RX gain, right?
Are you
On Fri, Apr 25, 2008 at 02:50:25PM -0700, Bob wrote:
> guys, I just got GR installed on cygwin. It runs. But
> don't know what debugging tools and IDE that I can use
> to play with it. Eclipse for windows seems not support
> cygwin. I couldn't run debugging or any other code
> navigation function.
On Fri, Apr 25, 2008 at 05:27:23PM -0400, Jennifer Ann Petersen wrote:
> Hi there,
>
> I'd like to use the GigE MAC module for the USRP2 on a piece of (non-USRP2)
> hardware, but due to project constraints am not able to use GigE or 100Mbps.
> Does the module support 10Mbps? From the comments in t
On Fri, Apr 25, 2008 at 09:21:18AM -0700, Dan Halperin wrote:
> I don't know how relevant this is, but I have fixed similar problems
> in the past by making sure that the host app sends data that's an even
> multiple of 512 bytes. (This is harder than you think :))
>
> I found that if you send
I'm getting a little closer...
http://cyprus.cmcl.cs.cmu.edu/tmp/flex_graphs/closer.jpg
it looks like I'm clipping a little bit, and is that "wide circle"
effect a result of DC offset?
- George
Long, Jeffrey P. wrote:
Kind of looks like it is clipping to me and possibly some DC offset
probl
Kind of looks like it is clipping to me and possibly some DC offset
problems.
-Jeff
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
George Nychis
Sent: Tuesday, April 29, 2008 10:13 AM
To: Eric Blossom
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-
On Fri, Apr 25, 2008 at 12:16:02AM -0500, Murtuza wrote:
> Hi frnds
>
> I am new to GNURadio and I have a simple question the answer to which I
> cannot find. I tried all kinds of methods to know what's happening. This is
> my last way to know the answer. I am looking at tunnel.py in
> gnuradio/ex
Hi All,
Is there any gnuradio block that will allow to set the last samples of the
input signal to zero?
ie. somenthing like...
for (i=0;i___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
On Mon, Apr 28, 2008 at 8:20 PM, Tom Rondeau <[EMAIL PROTECTED]> wrote:
> Ahmet Hasim Gokceoglu wrote:
>
> > hi,
> >
> > I am trying to implement a QPSK receiver with GNU radio using the
> > board RFX2400 where I take the input from signal generator. The symbol
> > rate of signal generator is 1Msy
You're not being shunned :)
Stating the obvious, it would be great to have 1 complete
implementation of the C++ daughterboard code, rather than N partial
implementations.
Hopefully once I get passed my May madness I can work with Michael on
this.
Does it look like I am clipping? I am
Hello Tom,
Looking at your reply to this post, I am wondering how can we then transmit
at carrier frequency around 90-110 MHz? Would we have to use a different
daughterboard? I didn't have any problem transmitting an analog audio signal
over carrier frequency within board frequency range as well
On Mon, Apr 28, 2008 at 10:11:47AM -0700, David Li wrote:
>
> 1. In section "Constructing / Assigning a PMT": isn't pmt_list part of
> this too?
>
FWIW, there's no list type. A list is built from the empty list
(PMT_NIL) and pairs (conses). It's pretty much isomorphic to scheme
and lisp data ty
On Tue, Apr 29, 2008 at 01:55:33AM -0400, George Nychis wrote:
> Hi all,
>
> First, I'm sorry if my actions are shunned upon (C++ daughterboard code
> outside the mainstream repository), but I could sincerely use help with a
> deadline approaching next week.
You're not being shunned :)
Stating
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