Really appreciate your reply. The carrier frequency that I use is 6MHz. I
would like to try the preamplifier that you recommended.
I got another problem which may clear the reason why I met this problem. I used
a signal generator to produce a 6.01MHz sinusoid wave. After down conversion by
6MH
Hello,
I am a senior student that also studying GNU Radio. I have found your
post about generating signal and transmit on gnuradio mailing list
(though it is written in 2007).
I am wondering if you could give me some hints on generating signal and
transmit using USRP? I am new to gnu radio and ha
On 03/28/2011 06:41 PM, Yan Nie wrote:
> Dear all,
>
> I'm using LFRX to detect a -120dBm signal. According to my measurement, the
> lowest power of signal that LFRX is able to detect is -90dBm. I tried deploy
> a preamplifier to amplify the received signal by certain dB in order to reach
> the
Wav file is recorded from FT857 receiver connected directly to
microphone input of PC. Thats why its 22050Hz.
When I connect USRP2 source to the GRC receiver (bottom part of
picture) I can receive FM broadcasting.
If I connect this GRC receiver to GRC transmitter, it works perfectly too.
Problem
Dear all,
I'm using LFRX to detect a -120dBm signal. According to my measurement, the
lowest power of signal that LFRX is able to detect is -90dBm. I tried deploy a
preamplifier to amplify the received signal by certain dB in order to reach the
-90dBm, but this turned out that noise is amplifie
On 03/28/2011 02:18 PM, Tachwali, Yahia wrote:
> Hello Guys,
>
> What is the IF frequency of the WBX board? I could not find this in the WBX
> documentations. Any pointers? Thank you.
The IF frequency is generally the error in tuning between the target
center frequency and the actual center fr
On Mon, Mar 28, 2011 at 3:23 PM, Marcin Szelest wrote:
> Hello,
>
> I have created FM transmitter in GRC:
> http://szelest.org/question/TX_RX.grc.png
>
> Unfortunately demodulated audio has poor quality and annoying
> distortions. I have spent a lot of time on it without positive effect.
> Here is
Hello Guys,
What is the IF frequency of the WBX board? I could not find this in the WBX
documentations. Any pointers? Thank you.
Kind regards,
Yahia Tachwali
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> I also see uU from the GRC script output about every 5 or so seconds.
> Does anyone have any idea if this is a FIFO problem, or is it a
> USRP/GRC issue? I am using a Duo core SU7300 laptop so I would think
> it should run OK real-time unless the C++ and GRC script demand much
> more processing
HI Marcus,
Sorry, I should have been more clear:
- Ubuntu 10.10
- Install from GIT
- Clean installation and no older packages. New Ubuntu, latest update and then
Gnu Radio installed
I then choose this alternative to install:
$ mkdir build $ cd build $ ../configure $ make $ sudo make install
M
On 28/03/2011 4:23 PM, Farhad Abdolian wrote:
HI,
I have installed GR on a Compaq 6715b laptop and everything seems to
work except the GRC. When I try to run a simple test example I get the
above error.
I have tried to search the internet for it, but I can not find any
reference to it. Does
HI,
I have installed GR on a Compaq 6715b laptop and everything seems to work
except
the GRC. When I try to run a simple test example I get the above error.
I have tried to search the internet for it, but I can not find any reference to
it. Does anyone know what is missing?
Thanks in advan
Hello,
I have created FM transmitter in GRC:
http://szelest.org/question/TX_RX.grc.png
Unfortunately demodulated audio has poor quality and annoying
distortions. I have spent a lot of time on it without positive effect.
Here is how demodulated audio sounds like:
http://szelest.org/question/record
Hi all,
I'm having some issues with the USRP and some latency in the output signal. I
am using a C++ program which modulates a signal and writes to a file
continuously.
When I use a normal file, the C++ program output looks perfect. When I use a
script made in GRC to read the C++ output file
Hi, all,
Does any person happen to know whether USRP2/WBX has been given a J/F 12
application number yet?
I'd greatly appreciate if you have information about this?
Regards,
Andrew
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On Mon, Mar 28, 2011 at 2:02 PM, Jason Abele wrote:
>> Even setting ADC-digital = 6.0, ADC-digital-fine = 0.5 and setting the
>> WBX-PGA0 to same value used with libusrp2
>> the result is not the same as in I'm losing something like 20 dB.
>> Is this expected ?
>
> Missing 20dB sounds like maybe y
On Mon, Mar 21, 2011 at 4:23 PM, Ben Reynwar wrote:
> The features I'd like to use from the library are the macros
> SWIG_SHARED_PTR and SWIG_SHARED_PTR_DERIVED.
>
> I'm using swig-1.3.40 (standard for ubuntu 10.04). The macros were
> added in swig-1.3.34 (Feb 2008). In the current version (swi
On 28/03/2011 10:02 AM, Jason Abele wrote:
Even setting ADC-digital = 6.0, ADC-digital-fine = 0.5 and setting the
WBX-PGA0 to same value used with libusrp2
the result is not the same as in I'm losing something like 20 dB.
Is this expected ?
Missing 20dB sounds like maybe you have the other anten
> Even setting ADC-digital = 6.0, ADC-digital-fine = 0.5 and setting the
> WBX-PGA0 to same value used with libusrp2
> the result is not the same as in I'm losing something like 20 dB.
> Is this expected ?
Missing 20dB sounds like maybe you have the other antenna port
selected. Have you tried swa
On 28/03/2011 4:29 AM, Songsong Gee wrote:
I used to work with RFX 400 for wireless communication
Now, I have to change daughterboard to BasicTX/RX
And then, received signal is not much strong as RFX 400
It's to weak
Other conditions are all same, except boards.
Are Basic TX/RX not appropriate
Hi all,
I'm in the process to migrate our software currently using the old
libusrp2 to use the UHD.
My daughter board of reference is the WBX.
With the libusrp2 the gain range was [0, 31.5] while with UHD is [0, 38].
I have noticed that now with UHD is possible to set (apart the overall
gain chain)
I used to work with RFX 400 for wireless communication
Now, I have to change daughterboard to BasicTX/RX
And then, received signal is not much strong as RFX 400
It's to weak
Other conditions are all same, except boards.
Are Basic TX/RX not appropriate testing wireless communication?
And if I MUS
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