Hi all,
As I described in one of my previousposts, I wanted to have several
receiving paths for 434 MHz, and my USRP is equipped owith WBX and LFTX. So
WBX is one, and for the other, I designed small RF frontend using TI's
CC1000 that donwnconverts the signal to 10.7 MHz which can be used with
Hi,
The box is the first step; you also need to block the power supply line against
any incoming RF, your 10.7 MHz IF out needs a low pass filter that cuts off all
higher frequencies coming back in on this path, and your 433 MHz in needs to be
shielded 100%, with some double shielded coax
hi,
thank you Ralph.
It looks like I should have known about not packing two receivers in the
same band in the sme box, but anyway, rf parts are not in the same box, and
I intended to keep them at the distance of arround 5 to 10 meters. Antenna
of 434MHz in is more or less conected directly do the
On 12/10/2013 10:41 AM, Nemanja Savic wrote:
hi,
thank you Ralph.
It looks like I should have known about not packing two receivers in
the same band in the sme box, but anyway, rf parts are not in the same
box, and I intended to keep them at the distance of arround 5 to 10
meters. Antenna of
But I think that I have problem with RX LO of WBX, because I don't use TX
in my application, I have two receivers. External RF frontend brings HF to
IF and is connected using coax with usrp (LFRX). The other cable, UTP,
connects io pins as well as power of LFRX to external frontend. Interesting
On 12/10/2013 11:24 AM, Nemanja Savic wrote:
But I think that I have problem with RX LO of WBX, because I don't use
TX in my application, I have two receivers. External RF frontend
brings HF to IF and is connected using coax with usrp (LFRX). The
other cable, UTP, connects io pins as well as
On 12/09/2013 07:26 PM, Juha Vierinen wrote:
I recorded a 10 second snippet of 50 kHz baseband signal in interleaved
I and Q with 32-bit floating point format.
The signal is definitely frequency modulated, but it doesn't appear to
be by data. Plotting the unwrap(diff(unwrap(arg(s))) shows a
These look like 2pi jumps -- which is the an artifact if the unwrapping is not
working well.
On Dec 10, 2013, at 1:55 PM, Johnathan Corgan johnat...@corganlabs.com wrote:
On 12/09/2013 07:26 PM, Juha Vierinen wrote:
I recorded a 10 second snippet of 50 kHz baseband signal in interleaved
