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/Kygw
able 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,
Chen
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 wrote:
> The polarisation loss in your case might be 30 dB. Have a look into that.
>
> Regards,
> Vanush
>
> On Wed, Jan 29, 2014 at
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 wrote:
> Oh!
capability level 6
}}}
Best regards,
Cheng Chi
On Tue, Jan 28, 2014 at 1:58 AM, Nick Foster 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 spuriou
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 wrote:
> On 01/28/2014 09:14 PM, Cheng Chi wrote:
>
> Hi,
>
> I am trying to collect signal from Thuraya-3. Here
less)
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
<>___
Di
664
}}}
Best regards,
Cheng Chi
On Mon, Jan 27, 2014 at 4:28 PM, Nick Foster wrote:
> On Mon, Jan 27, 2014 at 12:23 AM, Cheng Chi wrote:
>
>> Hi Nick,
>>
>> Thanks for your quick reply!
>>
>> I have to use a 10M sampling rate in my case, but due to com
ALERT)
(37 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 reg
.
I found that there's a file called "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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Discuss-gnuradio@gnu.org
h
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 wrote:
> Hi,
>
> I just pushed a t
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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