[mythtv-users] Conflicting channels

[Simon Hobson]

Simon Waldman wrote:

>For simplicity's sake I deleted my existing video sources and created
>a new one.

Not necessary, EIT is turned on/off either for a card (in card 
setup), or by channel (tickboxes in the channel editor)

>I faffed with the XML stuff for an hour or so, but couldn't
>figure out how to make it work.

Can't help with that, it's a while since I set it up and vaguely 
recall a similar problem - though I did get it working.

>Then I tried to scan for
>channels for these.... and I was told that each one had ~35 duplicate
>channels. These were basically two copies of every BBC channel. After
>a little while of trying to sort things out, I just kept hitting
>"suggest", and I now have my BBC channels on strange channel numbers,
>and often in two different places.

That's a known problem where you can pick up transmissions from two 
(or more) transmitters. The first set of channels will get their own 
numbers, the duplicates will end up around 800 onwards (in most set 
top boxes). Since most devices scan bottom up through the spectrum, 
and (at least round here) the local repeaters are generally at lower 
frequencies than the main transmitter, you often end up with the 
better signals up on 800+.

For a set top box, the advice is to unplug the antenna lead while it 
is scanning past the frequencies you don't want.

Best thing is to consult one of the guides that lists the multiplexes 
you can get, and just scan one specific frequency.
So, delete all channels and delete all transports. Now do a scan but 
only for one frequency on the transmitter that gives you the best 
signal. That should give your the channels on that frequency.
You can either repeat that for each mux, or after scanning the first, 
you should find that the other transports (muxes) have been picked up 
- and you can now "scan all transports" to pick up the rest.

-- 
Simon Hobson

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