[mythtv-users] Wierd breakup

[Mike Perkins]

Ian Oliver wrote:
> In article <VA.0000260c.009e5b6b at foxhill.co.uk>, Ian Oliver wrote:
>> It isn't like normal DVB-T breakup from a bad 
>> signal and audio isn't affected - it looks more like the frontend not 
>> decoding it properly as huge blocks leap around, but it happens on all 
>> front ends.
> 
> OK this weird breakup looks like it's just breakup, but it looks 
> different on mythtv to on our PVR.
> 
> It's affecting the low power 64QAM muxes and the Emley Moor transmitter 
> pages says -
> 
> "From Monday 14 April 2010 for around 2 months, transmissions from Emley 
> Moor will be from a reserve antenna which may affect reception for some 
> viewers. This is in preparation for digital switchover work and signals 
> are liable to reduced power and short interruptions, for which we 
> apologise."
> 
> (Of course, the 14th of April wasn't a Monday, so maybe they meant 19th, 
> which would fit.)
> 
> My backend is currently on the end of a long cable that's downstream of 
> our PVR and two splitters. It stayed that way as it worked fine.
> 
> It's now about to get promoted to head of the chain!
> 
> Ian
> 
A factor you might, just might, need to take into account in analysing your 
situation is that it's spring.

Here, I am faced with a wall of trees about 12m/40ft away from my aerial, in the 
direction of the transmitter. Needless to say, my reception does vary according 
to season.

I know that this is not going to be a typical arrangement, but don't overlook 
trees breaking into leaf (and similar) as a cause for signal level changes.

-- 

Mike Perkins