On 11/04/2010 01:14 AM, Steve Mcmahon wrote:
> Hello:
>
> I meant to ask this in my previous posting, but I forgot, so I'm making
> another post.
>
> I am running GNU Radio 3.3.0 under openSUSE 11.2, and I have a USRP2 board
> with a WBX daughterboard. I'm still somewhat new to GNU Radio, so plea
On 11/04/2010 01:09 AM, Steve Mcmahon wrote:
> Hello:
>
> I am running GNU Radio 3.3.0 under openSUSE 11.2, and I have a USRP2 board
> with a WBX daughterboard. I'm still somewhat new to GNU Radio, so please bear
> with me.
>
> What is the minimum and maximum frequency at which I can transmit and
Hello:
I meant to ask this in my previous posting, but I forgot, so I'm making another
post.
I am running GNU Radio 3.3.0 under openSUSE 11.2, and I have a USRP2 board with
a WBX daughterboard. I'm still somewhat new to GNU Radio, so please bear with
me.
Isn't it necessary that the decimation
On 11/04/2010 01:02 AM, Steve Mcmahon wrote:
> Marcus:
>
> Thank you for your reply. Let me ask you another question to make sure I'm
> understanding this correctly. Remember, I have a USRP2 board with a WBX
> daughterboard. If I construct a flow graph where a signal source block
> generates a 7
Hello:
I am running GNU Radio 3.3.0 under openSUSE 11.2, and I have a USRP2 board with
a WBX daughterboard. I'm still somewhat new to GNU Radio, so please bear with
me.
What is the minimum and maximum frequency at which I can transmit and receive?
I thought it was between 50 MHz and 2.2 GHz, b
Marcus:
Thank you for your reply. Let me ask you another question to make sure I'm
understanding this correctly. Remember, I have a USRP2 board with a WBX
daughterboard. If I construct a flow graph where a signal source block
generates a 7 khz cosine at a sample rate of 200 khz (100e6/500), and
Gregor:
Thanks for your reply. Remember, however, that this openSUSE 11.3 machine I
have does not have internet access; it's in a closed-room off the network. So I
can't run "zypper search gcc", and things like that. Is there a way I can
separately download a *.tar.gz for gcc 4.4.4 using my oth
Nick and others,
I have decoded a capture of ATSC that Nick provided (many thanks).
Here are some numbers for double-checking:
1) the original file was 730MB which for 8 complex Msps corresponds to
~ 11 secs of transmission
2) at the output of the equalizer (stream 0) there are 491MB of data pro
On 11/03/2010 11:11 PM, Markus Heller M.A. (relix GmbH) wrote:
> Hi Marcus,
>
> great, now I know what was wrong. I didn't expect my dummy load to be so
> safe. It was a real signal lock :-)
>
> For all the others, here's a short experiment report:
>
> Here are the parameters:
>
> * Sample ra
Hi Marcus,
great, now I know what was wrong. I didn't expect my dummy load to be so
safe. It was a real signal lock :-)
For all the others, here's a short experiment report:
Here are the parameters:
* Sample rate 200k
* Signal source at 1 KHz, amplitude at a minimum of 0.001 - to
On 11/03/2010 06:57 PM, Markus Heller M.A. (relix GmbH) wrote:
> I kindof have a similar problem. Guess I havent understood this yet.
>
> I want to generate a very basic signal at 10.00 MHz. A little up or
> down is not relevant, but I want to hear a signal at all. I have a very
> sensitive HF
I kindof have a similar problem. Guess I havent understood this yet.
I want to generate a very basic signal at 10.00 MHz. A little up or
down is not relevant, but I want to hear a signal at all. I have a very
sensitive HF receiver right next to my dummy load, so that should work
with a very f
On 11/03/2010 05:27 PM, Dan Harasty wrote:
> Marcus wrote:
>> It's usual in telecom systems for there to be some kind of AFC on the
>> receive side to compensate for transmit-side frequency error.
> Can't this problem also be solved with a transmit-side correction?
>
> If the "error" in this partic
I am having difficulty transmitting anything at all. When I run the below
script on one USRP2, and then run usrp2_fft.py on another computer with
another USRP2 hooked up to it, that shows nothing. I have the appropriate
daughterboards to transmit in that frequency range. When I run a transmit
sc
Thanks.
Yes, it looks like out of memory from dmesg. There are lots of error messages
like
---
[ 126.380096] attempt to access beyond end of device
[ 126.386657] mmcblk0p2: rw=0, want=7782440, limit=7738167
[ 126.392578] attempt to access beyond end of devic
Marcus wrote:
It's usual in telecom systems for there to be some kind of AFC on the
receive side to compensate for transmit-side frequency error.
Can't this problem also be solved with a transmit-side correction?
If the "error" in this particular USPR2 LO is about 900MHz -
899.99701MHz = 0.002
Hi, All,
Now I am trying to install GNU Radio 3.2 on Angstrom and Beagleboard, following
Philip's instruction on http://www.opensdr.com/node/17
'Configure' succeed, but 'make' failed just at the beginning with the following
errors.
--
On 11/03/2010 04:00 PM, Steve Mcmahon wrote:
> Hello:
>
> I am still somewhat new to GNU Radio. I am running GNU Radio 3.3.0 under
> openSUSE 11.2, and I have two USRP2 boards, each with a WBX daughterboard. I
> need some help understanding some fundamental things about GNU Radio and the
> USRP2
Hello:
I am still somewhat new to GNU Radio. I am running GNU Radio 3.3.0 under
openSUSE 11.2, and I have two USRP2 boards, each with a WBX daughterboard. I
need some help understanding some fundamental things about GNU Radio and the
USRP2 and upconversion.
I am trying generate a tone at 900.0
Hi,
I am confused with the error that I am having in my block.
I have two files that I use for testing the gnuradio block that I am
developing. The input (type gr_complex) to the block is a gr.file_source and
I use 4092 input_items that I store in a buffer to work in the general_work
function. In
The mimo cable has not been addressed in UHD ATM. To receive from
multiple usrps in a synchronized manner, you will need to feed each PPS
and reference input appropriately according to the following docs:
http://www.ettus.com/uhd_docs/manual/html/usrp2.html#hardware-setup-notes
In the flow gra
Hi,
Setup: Two USRP2 + WBX boards, one PC with Ubuntu 10.04, the latest
gnruadio/next and uhd from the github. The PC hosts two PCI express
GigEthernet cards, which are connected to the two USRP2s.
I'm using UHD to tx/tr with two boards simultaneously. I'm working
with Multi USRP source and sink
Hello all, I've got a GNURadio install on two laptops, both of which have
version 3.3.0 on them. They are both Dell Latitudes E5500 with Ubuntu 9.10
x86 on them. I have two USRP2s with the correct firmware installed on the SD
cards to operate the WBX daughter card (txrx_wbx_raw_eth_20100608.bin). I
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