I am working on an NTSC receiver using the USRP/TVRX board. I am tunning the
board to 63.25 MHz with decimation set to 10; this gives me 6.4 MHz of
bandwidth. The NTSC channel is 6 MHz wide so with these settings I get some
interference from the adjacent channels.
Is there a way to set the fi
Achilleas,
Okay. I am primarily interested in the equalization for the time being,
but I can see it would seem to make a lot of sense to create the
sequence detection as well.
In terms of making the isi lookup table for multidimensional
modulations, whats the best way to go about it? Is there any
Hello!
I'm trying the code from gr.window. For the blackmanharris window
everthing works fine:
>>> from gnuradio import window
>>> window.blackmanharris(3)
[0.217469997, 0.217470014, 0.217469989]
but bartlett has problems findeing midn:
>>> window.bartlett(7)
Tracebac
svn co svn://206.216.146.154/svn/repos_sdr_dttsp/trunk dttsp
'Eric Blossom' wrote:
On Wed, Sep 27, 2006 at 01:44:34PM -0400, Robert W McGwier wrote:
The feedforward AGC system in DttSP is more complex in that it is two
track (fast and "user set"). I believe I already mentioned this so I
On Wed, Sep 27, 2006 at 01:44:34PM -0400, Robert W McGwier wrote:
> The feedforward AGC system in DttSP is more complex in that it is two
> track (fast and "user set"). I believe I already mentioned this so I
> won't go over it again. But let me reiterate one important feature of
> our work.
The feedforward AGC system in DttSP is more complex in that it is two
track (fast and "user set"). I believe I already mentioned this so I
won't go over it again. But let me reiterate one important feature of
our work. One of the things that was important to its success as a
feedforward ag
Matt Ettus wrote:
0 dBm, or 1 mW into a receiver will not damage it.
Matt
Under ordinary conditions, a radio receiver receiving a 0dBm signal
would be close
to overload, but not in "input amplifier damage" territory.
You average FM radio receiver is quite happy receiving a few microwatts
(-3
On Wed, Sep 27, 2006 at 04:28:08PM +0100, Andrew Borg wrote:
> Hi Eric. Thanks for your help. It all works exactly how you said. I was
> enabling the correct pins using "usrp.source_c(0, 64)" - the code I
> pasted "usrp.sink_c(0, 64)" was a blind copy-paste from Oussama's email.
> Sorry about
Vincenzo Pellegrini wrote:
hi,
I've just been reading the thread about the broken RX board.
some days ago I've just denied to one of my fellows the permission to
connect an amplified HF antenna to the LFRX for fear it could overload
the input...we used a passive half-wave (@ band centre) dipole
Just wondering, what is the make and model of your oscilloscope you
are using? Also, what is the sample rate?
Thanks,
Brian
On 9/27/06, Andrew Borg <[EMAIL PROTECTED]> wrote:
Hi Eric. Thanks for your help. It all works exactly how you said. I was
enabling the correct pins using "usrp.source_c(
Hi Eric. Thanks for your help. It all works exactly how you said. I was
enabling the correct pins using "usrp.source_c(0, 64)" - the code I pasted
"usrp.sink_c(0, 64)" was a blind copy-paste from Oussama's email. Sorry
about the confusion.
All I was missing was the " u._write_oe(1, 0x, 0
On 9/27/06, Brian Padalino <[EMAIL PROTECTED]> wrote:
It might not be a bad idea for Ettus Research to also stock some other
items such as SMA cables/adapters/attenuators.
Attenuators might a good idea. I think a model to match the 100mW
transmitters would be Mini-Circuits' VAT-15 (50 ohm, SMA,
It might not be a bad idea for Ettus Research to also stock some other
items such as SMA cables/adapters/attenuators.
It might also be handy to have some nice block diagrams with max power
recommendations and recommended attentuations for cabled setups as
well as a table in the Wiki with such rec
Oliver,
You are right:
Trellis implementation supports multi-dimensional constellations etc
(through the metric calculation block abstraction, etc), however,
in the examples and the supporting fsm_utils.py files
I have not included support for GMSK, and the automatic
generation of lookup tables f
hi,
I've just been reading the thread about the broken RX board.
some days ago I've just denied to one of my fellows the permission to
connect an amplified HF antenna to the LFRX for fear it could overload
the input...we used a passive half-wave (@ band centre) dipole
instead.
just to be sure a
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