Hi Guys,
I have recently received a WBX and am struggling to get it to work.
Please see the following screenshots:
http://www.flickr.com/photos/47218...@n06/sets/72157623341034652 shows a
very strong GSM base station at 940.2MHz. As you can see, the DBSRX works
perfectly but the WBX (using the
I am trying to use wireshark to extract the timestamp from the received
ethernet packets to test my sync_every_pps() function is working. I have
located the word I need to extract from the received data but how can I
automatically extract this and display it as an integer in the display
window in
MarcW wrote:
I am trying to use wireshark to extract the timestamp from the received
ethernet packets to test my sync_every_pps() function is working. I have
located the word I need to extract from the received data but how can I
automatically extract this and display it as an integer in the disp
Thanks for your help Doug. I thought I knew which bits to monitor which
contained the timestamp but now im not sure! The packets received seem very
large. I have included a screenprint of one below. Please could you tell me
which bits are the timestamp in this packet?
The data appears to start fro
MarcW wrote:
Thanks for your help Doug. I thought I knew which bits to monitor which
contained the timestamp but now im not sure! The packets received seem very
large. I have included a screenprint of one below. Please could you tell me
which bits are the timestamp in this packet?
The data appear
Ian-
> Perhaps? We only have two USRP2s and 2 XCVR2450s. However,
> if it was the SD card, I would think both XCVR2450s should
> have the problem. Actually, even the better of the two
> occasionally fails, so I can't be sure.
If you rule out the SD card, then is there a way you and Manav can comp
On Tue, Feb 2, 2010 at 4:34 PM, Anu000 wrote:
>
> Hi,
> We did try the below command on two USRP2s coneected via a SMA Cable (Tx-Rx)
> with freq = 25M however it returned the following error on both sides
>
> At Rx side it shows like the below -
>
> [r...@gnuradio1 ofdm]# ./benchmark_ofdm_rx.py -
On Wed, Jan 27, 2010 at 11:21 AM, bin zan wrote:
> Hello,
> I was trying to run following OFDM command on USRP2, however, I got a
> bunch of "Stime out" at the receiver side.
>
> ./benchmark_ofdm_tx.py -f 2.4G -i 512 --fft-length=64 --occupied-tones=32
> --cp-length=4
> ./benchmark_ofdm
Hi Tom ,
Thanks , we did try the updated script from Veljko . It works though we have
missing packets after a while ( as suggested in the forum we would play with
the interpolation and decimation ) though the 2 USRP2s are directly
connected .
We are still probing into the permissions issue as ind
From time to time people ask about building GNU Radio for the
Beagleboard. In an attempt to make it easier for more people to work on
this, I posted some notes at:
http://www.opensdr.com/node/17
describing how to build GNU Radio on the Beagleboard (obviously building
it cross is much faster,
I need to do a ber test and my current system is based on frequence hopping.
I think I should send a random 01 bit sequence at the transmiter side and
then,obsever the received bit sequence.
In next step,when campare the two sequence in order, how decided the
order?or how to do the Sync in two rad
Same question.
How build a scenario to measure a ber vs. snr with two radio?
2010/1/6 amarnath alapati
> hello everybody,
>I wanted to test the USRP performance for various modulation
> schemes by varying the power level of transmitted signal and plotting the
> BER. Can i use one of
Hi Tom,
In our case, even with script from Veljko, the OFDM receiver doesn't show
any thing. And we always see "usrp2: failed to enable realtime scheduling".
Do you think that will cause problem?
Thanks,
Bin
On Wed, Feb 3, 2010 at 12:57 PM, Anupama Purohit
wrote:
> Hi Tom ,
> Thanks , we did try
Hi All,
But I guess only Matt can answer this :-)
What is the bandwidth of the PLL loop of the RFX1800 and the XCVR2450 ?
BR/
Per
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Mike,
Doe your USRP have a serial number below 500? I know you've been a
longtime user, so yours may be that old. If so, the WBX won't work for
you since USRPs under #500 do not send a clock to the daughterboard, and
the WBX needs one.
Also, note that in the following command:
WBX (RX
Hello,
I wish to have a USRP source receiving at 54.1Mhz sent straight to a stereo
wave file sink with no demodulation or any other manipulation. Side A of the
USRP would record to the left channel and side B to right. I'd like to record
at 192khz 24bit if possible (and no this isn't for a l
Hi Matt,
Thanks for your reply.
My USRP1 serial number is 134 :(
"-A RX2" was used, I clearly can't copy and paste correctly!
Is there a clock you could recommend that will fit inside the USRP1
enclosure to fix this issue?
Fingers crossed!
Cheers,
Mike
M0MIK
On 3 February 2010 22:23, Matt
Thanks Isaac for your kindly suggestion. I think i have to dive into python
now...
idg101 wrote:
>
> Hi,
> I haven't looked at any of the QAM-related code in the GNU Radio
> baseline, but it should be possible to design a generic MQAM demodulator.
>
> In fact, you should be able to build
Hi Josh
I am now in a position to summarise what I have observed.
- 1 of our 2 XCVR2450s works with both of our USRP2s.
- The other XCVR2450 works with only one of our USRP2s (i.e., it fails
to lock over the full high band and low band on the second USRP2).
Do you have any idea what might be w
Hi:
Have anyone use BasicTX and TVRX, did you used amplifer?
What's amplifer or antenna amplifer do you use, can you tell me, that let me
reference, thanks.
Best Regards.
Mei-Wen Li (Emily)
National Cheng-Kung University Dept. of
Computer Science and Information Engineering
emily7...
On Wed, Feb 03, 2010 at 03:39:34PM -0700, Jon Paul Lundquist wrote:
>
> Hello,
>
> I wish to have a USRP source receiving at 54.1Mhz sent straight to a
> stereo wave file sink with no demodulation or any other
> manipulation. Side A of the USRP would record to the left channel
> and side B to rig
Manav,
Sorry for not being active in this thread. Things have been very busy
here. In any case, it sounds like you are seeing something very
different from Ian. You are having one of 2 problems --
- You received bad SD cards. If you power up your USRP2 with the SD
card in it, and you d
Ian,
When you said "it fails to lock over the full high band and low band" do
you mean it locks nowhere, or do you mean that it locks on some
frequencies, but not everywhere? If the latter, can you be more
specific about where it locks and where it doesn't?
Also, what are the serial number
Hi Matt
Are you able to also comment on the problem that I am having? (Summary
below):
- 1 of our 2 XCVR2450s works with both of our USRP2s.
- The other XCVR2450 works with only one of our USRP2s (i.e., it fails
to lock over the full high band and low band on the second USRP2).
Thanks
Ian.
_
Ian Holland would like to recall the message, "[Discuss-gnuradio] Unable to
tune Tx or Rx with XCVR2450 on USRP2".
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Hi Matt
Sorry I wasn't completely clear in my previous post below. Specific
details are as follows:
When I say "it fails to lock over the full high band and low band", what
I mean is as follows. I ran a test program to step through the
frequencies
2.3 GHz to 2.6 GHz, and 4.8 to 6.1 GHz in 10 MHz
On 02/03/2010 10:19 PM, Ian Holland wrote:
Hi Matt
Sorry I wasn't completely clear in my previous post below. Specific
details are as follows:
When I say "it fails to lock over the full high band and low band", what
I mean is as follows. I ran a test program to step through the
frequencies
2.3
Hi Matt,
Ya, I am having the second problem. But, I have the gnuradio 3.2.2 code base
only. Will try to checkout again from the git repository and build.
Anyways, I did have a working card. So if this does not work, I will try to
copy this card to all the other cards.
Can you please guide me how t
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