"Chris Malcolm" <cam@holyrood.ed.ac.uk> wrote in message
news:bodj7i$8a4$1@scotsman.ed.ac.uk...
> despam.c.street@ntlworld.com (Chris Street) writes:
>
> ><{d-sep03}@dscs.demon.co.uk> wrote:
>
> >>In article <3fa96e7e$0$12668$fa0fcedb@lovejoy.zen.co.uk>, Robert Hill <zen13484@zen.co.uk>
> >>writes
>
> >>>Also, this thread appeared a while ago. Someone wrote that Vodafone and 02 networks operate
> >>>within so many kms of a transmitter ( I can't just remember the exact figure, but maybe 32?),
> >>>hills not withstanding, whereas Orange, T Mobile etc transmitters are far less powerful.
>
> >The maximum cells size is 36km, however if you pack cells closer together you can of course run
> >more transmitters and support more handsets in a given space. All of the base stations in a cell
> >(there can be more than one base transmittor) run sufficent power to talk way beyond 36km, the
> >problem is that timing constraints don't permit a base to handset distance beyond this due to
> >propogation delays.
>
> Unless you relax the propagation delays to trade greater distance for less traffic. This is done
> in a number of coastal transmitters which are thus enabled to reach 72km out to sea. This includes
> some islands, so that (for example) on parts of Skye you can use mainland transmitters which are
> more than 36km away.
>
> >>Another thing to bear in mind is that in marginal conditions your head can get in the way of a
> >>poor signal. Turning on the spot can sometime improve things - using a hands free kit and
> >>holding the handset aloft may prove better sometimes.
>
> Height is often critical. In marginal conditions tying the handset to a walking stick to loft it
> up will sometimes give you the needed extra. Or climbing a tree or local promontory.
>
> --
> Chris Malcolm cam@infirmatics.ed.ac.uk +44 (0)131 651 3445 DoD #205 IPAB, Informatics, JCMB,
> King's Buildings, Edinburgh, EH9 3JZ, UK [
http://www.dai.ed.ac.uk/homes/cam/]
>
Just back from the Lakes, can report that Grasmere area, previously a no signal are, now has full
strength reception.