Hi again,
Ok, I'm not familiar with the standard POCSAG, but if you
got a signal that you still need to decode with something
else, how do you know you don't get clear reception? What is
your measure for "good reception"?
As far as I read the English wikipedia, POCSAC uses a 4.5kHz
binary FSK, so can you see the two alternating frequency
e.g. in a waterfall plot of your RX signal?
Ideally, you'd directly be able to see the 512, 1200 or 2400
baud.
To explain a bit more:
GNU Radio is not a decoder for any specific standard; think
of it as the LEGO of SDR. You can build amazing things with
it, in fact, there's a lot of examples that come with GNU
Radio, and useful and complex standard implementations (FM
receiver, DTV transmission!), but if you need to have
something that's not there, you might need to a) use someone
else's Out-Of-Tree module or b) implement that functionality
yourself. So I must admit that I don't have the slightest
idea which settings you're referring to :) Maybe you're
interested in a quick&dirty introduction to GNU Radio
[1].
In the case of POCSAG, I remember gr-pocsag being a thing
(search for pocsag on
cgran.org); I
can't remember the original author, and I presume it's
pretty much dead -- but I'd love to be proven wrong.
Also, pyboms has pocsag-mrt package, but that seems to rely
on GNU Radio 3.6.2, if the Readme is correct, so that's
pretty dead, too.
Best regards,
Marcus
[1]
https://github.com/iZsh/pocsag-mrt
On 06/01/2015 10:18 PM, Stephan van Beerschoten wrote:
It is. I plan on running the output through a
utility that can decode it. However, before that can
happen I need to find out how I can get a clear
reception of the broadcast.
On Jun 1, 2015 4:15 PM, "Marcus
Müller" <
address@hidden>
wrote:
I'm
a bit confused, I though POCSAG was a text pager
system?
On 06/01/2015 10:04 PM, Stephan van Beerschoten wrote:
> Hi Guys,
>
> I compiled gnuradio for my ODROID ARM platform,
and I can listen to
> regular wideband radio just fine. I am using a
Generic RTL2832U with
> Rafael Micro R820T tuner.
>
> The radio quality is fine, and even when using
the rtl_fm tool
> directly (off topic for this list), it works.
>
> However, when I switch channels to 155.520 to
capture POCSAG
> broadcasts I cannot get a clear reception. I
can't find any decent
> documentation on GR to tell me what each setting
is, and I am not a
> HAM radio operator so some of the basics evade
me.
>
> I can't get decent POCSAG reception with the
rtl_fm tool either, so
> this is probably a setting thing somewhere.
>
> Why can't I get clear reception? Any pointers?
>
> Stephan
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________
Discuss-gnuradio mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio