[chbot] OT: SDR

[Solor Vox]

I've had myth up and running for a few years now if you want to chat about
that offline.  I'm also the author of the MHEG2XMLTV for DVB-T EPG
listings using myth.

http://sourceforge.net/projects/mheg2xmltv/

Gnuradio has a ton of decoder modules.  You might check out
https://www.cgran.org/wiki/gr-air-modes

I've had some trouble getting it compile as the build system appears
broken in git version.

Cheers

P.S. Be careful with the cheap E4000 on DX as many don't have the $0.10
ESD diode and can get fried with external antennas.

http://www.reddit.com/r/RTLSDR/comments/tl187/tuner_protection_diodes/

On Wed, January 2, 2013 11:07, Richard Jones wrote:
> Note I have changed the subject to OT: SDR to help archive browsing.
>
> In response to ' talk with anyone about SDR in more detail'...
>
> I bought the now obsolete dx.com rtl2832 + E4000 chips a while ago for
> experimentation, I also have ordered some rtl2832+R820T receivers which
> promise to be a little more sensitive, currently available, and cheaper at
> $14.
>
> Using the
> https://www.cgran.org/browser/projects/multimode/trunk/multimode.grcreceiver
> and gnu radio companion I cobbled together a nbfm digital mobile
> radio receiver to receive DMR transissions which are 2 slot TDMA. Adding a
> mixer to the front end I could simultaneously decode multiple transmit and
> receive frequencies used in a wired trunked radio network site. All this
> with exact relative timing, but limited dynamic range.
>
> Over Christmas I finally got around to using the RTL2832 for DVB-T
> reception, their original purpose. I can now record and replay digital TV
> on my laptop using ubuntu 12.04 and keffeine, next stop mythtv. The delay
> in getting around this was caused by needing a newer linux kernel and the
> upgrade was finally prompted by a dying HDD in my laptop. Ubuntu 12.04
> kaffeine requires an updated channel list for sugarloaf, I found this
> useful info somewhere on the web :
> # T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
> #
> # Multiplex TVNZ, UHF channel 34
> T 578000000 8MHz 3/4 NONE QAM64 8k 1/16 AUTO
> #  Multiplex TVWorks, UHF Channel 32
> T 562000000 8MHz 3/4 NONE QAM64 8k 1/16 AUTO
> # Multiplex Kordia, UHF Channel 36
> T 594000000 8MHz 3/4 NONE QAM64 8k 1/16 AUTO
>
> The next application to try will be ADS-B aircraft transponder display
> that
> Stuart Brown showed me, but I think the best apps are currently available
> for Windows and my 4 year old Windows OS backup CDs don't read at the
> moment, and I'm not exactly keen to pay again for something I already paid
> for.
>
> Anyone else have info to share on Software Defined Radio activities?
>
> Richard
>

--
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