Yep, I'm aware of that. On that note, their FCC and SEC filings are
pretty interesting.
https://www.google.com/search?num=20&safe=off&q=sirius+%22FM-3%22+%22TT%26C%22&oq=sirius+%22FM-3%22+%22TT%26C%22&gs_l=serp.3...466273.468341.0.468752.7.7.0.0.0.0.287.1073.2j4j1.7.0.ckpsrh...0...1.1.64.serp..7.0
Just to be clear, Sirius is different than XM (even though they merged). The
lower edge of the 12.5 MHz XM allocation is at 2332.5 MHz, IIRC. The upper
edge of the 12.5 MHZ Sirius allocation is there as well.
Sirius does have patents on hierarchical modulation, which I'm guessing they
would u
On Fri, Apr 8, 2016 at 10:48 AM, Andy Walls
wrote:
>
> > The audio codec is proprietary and not documented anywhere AFAIK
> so
> > even if you demod the bitstream, you won't be able to do much
> with it.
>
> > Thank you all for the conversation, it is pretty interesting. That
> m
> The audio codec is proprietary and not documented anywhere AFAIK so
> even if you demod the bitstream, you won't be able to do much with it.
> Thank you all for the conversation, it is pretty interesting. That makes
> sense
> that they have a proprietary protocol, it's a sham
The audio codec is proprietary and not documented anywhere AFAIK so
even if you demod the bitstream, you won't be able to do much with it.
Thank you all for the conversation, it is pretty interesting. That makes sense
that they have a proprietary protocol, it's a shame though. Is the text tha
Hi,
> I was thinking about XM radio today and how channel 1 on it is sent in the
> clear (if you don't have a subscription, you can tune to it and hear their
> adds). I haven't found a lot of information (so I think I know the answer),
> but has anyone looked into an XM receiver in GR?
The audi
Hello Steve,
that sounds like an interesting project; a couple of friends and I went
to the US for GRCON'14, rented a car and somehow Sirius and XM spiked
our interest, but as you can imagine, it's kind of hard to receive those
in Europe.
Could you share a bit of your flowgraph with the community
I think there is an overlay modulation. I'll try dig up the source where I
saw that.
On Apr 7, 2016 16:30, "Steve Katzberg" wrote:
> Jason,
>
> I am involved in a project that needs the bit stream from XM but we do not
> need it decrypted. The acquisition of the unencrypted Channel 1 would be
>
Jason,
I am involved in a project that needs the bit stream from XM but we do not need
it decrypted. The acquisition of the unencrypted Channel 1 would be fun to do,
but so far I cannot get Gnuradio blocks to properly lock on to the signal. The
Costas loop drifts through he QPSK constellation
