In article , MM
writes
On 8 Jul 2007 17:44:43 GMT, "Bob Eager" wrote:

On Sun, 8 Jul 2007 15:57:20 UTC, MM wrote:

This is a bog-standard 18-element TV aerial from Wilkinsons (£8.99)
and I plan to mount it in the loft space, where even a room aerial
gives excellent reception via the SLx6 Philex aerial booster.

From my bedroom window I can observe the aerial on the chimney of a
neighbouring house. How can I preserve its "angle" as closely as
possible when I mount my aerial? Or isn't the position that critical?

What I did was this:

a) Get the location of the transmitter (dtg.org.uk I think) and find it
on the OS map.
b) Find my house on the OS map.
c) get the bearing of the Tx from my house.
d) convert this to an angle relative to my road
e) since the roof joists are at 90 degrees to the road, add 90 degrees
to the angle from d)
f) make cardboard template containing that angle
g) use template to align aerial relative to joists

Then fine adjust in usual way

One final question: Can I mount the aerial on a wooden pole? I
couldn't buy a metal one this morning, so I bought a thicker type of
broom handle from the local hardware store for £2. Does the aerial
(normally fixed to a chimney or external metal wall bracket) need to
be earthed in some way? The pole will be mounted on a flat piece of
timber that runs across the joists in the centre of the loft space.

MM

No.. you can tie it up with string if you want!..
--
Tony Sayer