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Missing Channel weirdness on Eurobird 28A/B

Added by Kev S almost 12 years ago

Prompted by the question raised on the XBMC forums http://forum.xbmc.org/showthread.php?tid=151192 I decided to check if those channels had been added to my install (3.2.3) and have noticed that the problem doesn't just seam to be down to the NIDs...

For my satellite setup I added the Freesat EPG transponder only and let it Auto Detect multiplexes (after being bitten by my DVB-S2 STB missing most channels due to an outdated channel list and TVHeadend finding nothing from Waltham on DVB-T I have lost trust in pre-prepared lists and find the network scans work better!), this found around 100 multiplexes (now trimmed to 74 after I removed the DVB-S2 ones).

Inside this list a number of channels are missing from multiplexes it has found.

The four problematic ones I have checked (mainly because of the above link) being:-

A: ASTRA - 11.390 H - 2315
B: ASTRA - 11.390 V - 2316
C: ASTRA - 11.426 V - 2306
D: Freesat - 11.426 H - 2315

(Network, Frequencies, MuxIDs from my multiplex tab, multiplexes in bold have associated channels - they are listed in the order TVHeadend does when you sort by frequency).

Note how both groups share the same frequency, and two transponders share the same MuxID, however the two common MuxIDs are on different networks (i.e. Freesat vs Astra).

Now the odd thing is that "C" carries the channels France 24 and Bloomberg which I can watch no problems - however no services from "D" have been found (Specifically I have checked Radio Caroline which my STB finds, but TV Headend hasn't).
Also TV Headend has found all the services from "A" (mainly a lot of adult tat) and nothing from "B". In this case the MuxID is used only by the missing transponder.

It seams that TVHeadend is only storing the channels from the first multiplex on each frequency, and potentially on the first multiplex mentioning the MuxID.

That being said, the multiplexes list also includes the following:-
E: ASTRA - 11307H - 2303 - Frontend = OK
F: ASTRA - 11307V - 2314 - Frontend = OK
And the channel list includes services from both polarities.

Should TV Headend be able to cope with this or is Eutelsat doing very naughty things? I do know from experience my STB wouldn't add 11.390V and 11.426H when doing the network scan, instead I had to manually create 11.391V and 11.427H for it to find them.


Replies (1)

RE: Missing Channel weirdness on Eurobird 28A/B - Added by Prof Yaffle almost 12 years ago

For what it's worth - and I'm no expert on the vagaries of satellite, so I could just be making this up! - but I checked on my system and had basically the same muxes, and also had no Radio Caroline.

Checking [[here]] and [[here]], Caroline should be on 11.428H, not 11426 as I understood you above. That said, I didn't have that mux either, so I added it by hand: 11428000/27500000/SYS_DVBS/QPSK/Horizontal/Default. Now, the PC slowed to a crawl at this point, and I didn't understand why, and by the time I regained enough control to scroll around I found that the mux seemed to have appeared as 11427830.

... and then I realised that the slowing down was because of an auto-scan kicking in, and I then went from 800 services on 100 muxes to 1716 on 188 ... an enormous number of duplicate service names, but Radio Caroline is there if ever I want to see what happened to pirate radio ... I think the duplication is because I had to give the manual mux a satellite config ("default") when all existing services were unset ...

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