Hi Nick,
Thanks. It works fine.
I've another question. When using the modes_rx program, is there any option
that I can specify to save the original sampled baseband data?
Best regards,
Cheng Chi
On Sat, Jan 11, 2014 at 5:33 AM, Nick Foster bistrom...@gmail.com wrote:
Hi,
I just pushed
air_modes_preamble.cc seems to provide
the timestamp function. Does anyone know how to use this file separately?
Best regards,
Cheng Chi
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0.) Type 17 BDS0,9-1 (track report) from 7805dd with velocity
218kt heading 238 VS -1664
}}}
The timestamp are all zeros.
Another question is that if I use modes_rx, how to save the sampled complex
baseband signal? Is the data saved somewhere that I've missed?
Best regards,
Cheng Chi
}}}
Best regards,
Cheng Chi
On Mon, Jan 27, 2014 at 4:28 PM, Nick Foster bistrom...@gmail.com wrote:
On Mon, Jan 27, 2014 at 12:23 AM, Cheng Chi ch000...@e.ntu.edu.sg wrote:
Hi Nick,
Thanks for your quick reply!
I have to use a 10M sampling rate in my case, but due to computer
constrain
)
Center frequency: 1530MHz
Sampling rate: 10MHz
From the spectrum (attached), I can see the Inmarsat signal, but no sign of
Thuraya signal. Anyone has suggestion about how to receive the thuraya
signal?
Best regards,
Cheng Chi
attachment
Hi,
I think it's TDMA/FDMA, not spread spectrum. Each channel is about 30KHz.
Best regards,
Cheng Chi
On Wed, Jan 29, 2014 at 10:17 AM, Marcus D. Leech mle...@ripnet.com wrote:
On 01/28/2014 09:14 PM, Cheng Chi wrote:
Hi,
I am trying to collect signal from Thuraya-3. Here is the setup
level 6
}}}
Best regards,
Cheng Chi
On Tue, Jan 28, 2014 at 1:58 AM, Nick Foster bistrom...@gmail.com wrote:
Haven't used bladeRF, but I have used other LMS6002D-based radios with
gr-air-modes, with some success. The problem is Mode S has a weak CRC and
is thus vulnerable to spurious packets
Hi Nick,
Thanks.
Is it possible to treat the start of the save samples as time 0, then
timestamp following packets accordingly? Well, if not, I think it would be
a good feature to be added in the future.
Best regards,
Cheng Chi
On Thu, Jan 30, 2014 at 12:58 AM, Nick Foster bistrom
Hi all,
Thanks! I'll give it a try once I get a LHCP antenna.
Best regards,
Cheng Chi
On Thu, Jan 30, 2014 at 6:58 AM, Vanush Vaswani van...@gmail.com wrote:
The polarisation loss in your case might be 30 dB. Have a look into that.
Regards,
Vanush
On Wed, Jan 29, 2014 at 7:45 PM
to get specific antennas for
Inmarsat...Iridium is at 1616 -1626.5 MHz and Inmarsat is at 1525-1559 MHz.
I have used this antenna to capture signals around 1531 MHz successfully. I
guess this antenna would not kill signals from Inmarsat.)
Best regards,
Cheng Chi
Hi Sylvain,
May I know what's the setup you used for receiving the signal? The spectrum
looks very clear.
Best regards,
Cheng Chi
On Sat, Mar 29, 2014 at 11:39 PM, Sylvain Munaut 246...@gmail.com wrote:
This is what I found for inmarsat :
http://i.imgur.com/KygwHdD.jpg
Some 200 kHz
Hi,
I try to install gr-air-modes from the git source, but it seems the code
only works with GNUradio 3.7. May I know where can I find the old version
which is compatible with GNUradio 3.6.5?
Thanks.
Best regards,
Cheng Chi
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