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<  Freeview, TopUp and TV  ~  Freeview diurnal variability

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Posted: Fri Nov 03, 2017 10:22 am Reply with quote
Regular contributor Joined: 13 Mar 2009 Posts: 35

Just a few thoughts - open to comment/explanation Very Happy

Where I now live we have two options for Freeview... point the aerial at Pontypridd relay for the (idiotic) reduced channel compliment or point it through Mynnyd PwllYrHebog at Wenvoe for a full channel confection.

Of course I have a high gain antenna pointed through the mountain and distributed through the house by a UHF distribution amplifier... which works surprisingly well.

However it seems at least one mux (the one carrying Dave) only works during the day! come evening it gets no signal reported by the TV... and also breaks up in foul weather (well it would, so no surprise there). Slightly more bizarrely that mux didn't used to be available, but sprung up one day when we re-tuned the TV (not the Toppy) and even more peculiarly one Panasonic plasma can receive it and the other can't (both are on up to date firmware)

What is a slight puzzle to me is the fantastic reliability of the work/doesn't work nature of the availability... its not like it fades in and out its just there, or not.

Looking at a line of sight app, we shouldn't get any signal from Wenvoe, the mountain is just too big, so what signal we do get must be refracting or something more subtle.

The Toppy needs a retune - but its working well at the moment without Dave etc. but I am reluctant to mess with a working system Razz

tl;dr Analogue signals carrying digital TV display slightly odd characteristics in a valley in South Wales

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Posted: Fri Nov 03, 2017 10:35 am Reply with quote
Frequent contributor Joined: 30 Oct 2007 Posts: 2636
I've recently fitted a new aerial and cabling and now COM6 (785.8MHz) disappears completely when it rains. Some overhanging tree branches were removed yesterday, so I'll see how it goes after tonigh's rain.

The mux was never as bad as it is now, it either works with 100% signal, or the signal drops to zero.

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