My Freeview tells me my nearest transmitter is Belmont and that Belmont is 14.8 km (9.1 m) north-northwest (342 degrees) of my bungalow.
My television aerial looks to me like it is a Digital High Gain Class Two.
I have no reason to suppose it is not wideband.
As far as I can tell it is pointing precisely towards Belmont.
It is mounted horizontally.
I estimate its height above ground level as 24 ft (7.3 m)
It is connected in the loft to a six way splitter.
Five of the output ports are cabled up, but currently only three have televisions attached.
Cables leading away from the splitter look modern to me, but by the time the cable reaches the third television, it is looking distinctly ancient.
Until recently we have had little trouble with reception.
Now (over the last two months) however, although reception is always better on the main television than the others, we can rarely get good reception on all freeview channels on any of them.
When I retune any of the televisions, I sometimes lose reception from some multiplexes altogether.
On one of the secondary televisions, I can virtually guarantee to lose COM5 if I dont have a booster attached when I do the retune.
Questions I am unable to answer for myself are:
Is the aerial too powerful?
Is the aerial not powerful enough?
Does the aerial need to be higher?
Do I need to update any of the cabling (If only to reduce the number of joints)?
Is the problem environmental and one I must live with until the wind direction changes?
Are there other questions I should be asking?
And finally, from sheer curiosity, why is reception from BBCA and BBCB always better than from any other multiplex? Does the BBC get transmission privileges denied to other suppliers?
Thursday 4 April 2013 8:17PM
Horncastle
My Freeview tells me my nearest transmitter is Belmont and that Belmont is 14.8 km (9.1 m) north-northwest (342 degrees) of my bungalow.
My television aerial looks to me like it is a Digital High Gain Class Two.
I have no reason to suppose it is not wideband.
As far as I can tell it is pointing precisely towards Belmont.
It is mounted horizontally.
I estimate its height above ground level as 24 ft (7.3 m)
It is connected in the loft to a six way splitter.
Five of the output ports are cabled up, but currently only three have televisions attached.
Cables leading away from the splitter look modern to me, but by the time the cable reaches the third television, it is looking distinctly ancient.
Until recently we have had little trouble with reception.
Now (over the last two months) however, although reception is always better on the main television than the others, we can rarely get good reception on all freeview channels on any of them.
When I retune any of the televisions, I sometimes lose reception from some multiplexes altogether.
On one of the secondary televisions, I can virtually guarantee to lose COM5 if I dont have a booster attached when I do the retune.
Questions I am unable to answer for myself are:
Is the aerial too powerful?
Is the aerial not powerful enough?
Does the aerial need to be higher?
Do I need to update any of the cabling (If only to reduce the number of joints)?
Is the problem environmental and one I must live with until the wind direction changes?
Are there other questions I should be asking?
And finally, from sheer curiosity, why is reception from BBCA and BBCB always better than from any other multiplex? Does the BBC get transmission privileges denied to other suppliers?