On 12 Sep 2011 10:06:08 GMT, just as I was about to take a herb, Huge
disturbed my reverie and wrote:

but
because it means normal human beings will not have to sit between 2 morons
having trivial conversations about utter ****.

I'm with you 110% on that one mate. Bearing in mind of course that the
Richard-heads will have to shout above the noise as well.
--

Cheers

DrT
______________________________
We may not be able to prevent the stormy times in
our lives; but we can always choose to dance
in the puddles (Jewish proverb).

In article , d ()
wrote:

There was a BSB squarial on a wall in north finchley up until 2 years ago
when the building was redeveloped.

My daughter's house in Cambridge still has one.

--
Colin Rosenstiel

In article , (Roland Perry)
wrote:

In message , at
09:39:11 on Mon, 12 Sep 2011, Mike Coon
remarked:
I've heard of leaky feeders, but not just how much of a solution they
represent. For instance, do they operate bi-directionally? I have
difficulty imagining that they could pick up sufficient signal directly
from phones to do all the essential handshaking without needing some
special equipment on the trains to act as intermediaries.

It works fine in the HEx tunnels, and the Oslo equivalent (as
commented on previously).

Leaky feeders work fine for PMR purposes in tube stations.

--
Colin Rosenstiel

In message , at 11:35:18 on Mon, 12 Sep
2011, d remarked:
to be UK and the other to be France. Similar issues apply to Microcells
on an aircraft, how high off the runway does it have to be in order to
start charging at roaming rates, rather than UK?)

Presumably the ones in aircraft communicate to ground via satellite so
how do they keep the dish aligned when in flight?

Fairly straightforward servo system. It works on trains with satellite
wifi.
--
Roland Perry

On Mon, 12 Sep 2011 07:21:14 -0500
wrote:
In article , d ()
wrote:

There was a BSB squarial on a wall in north finchley up until 2 years ago
when the building was redeveloped.

My daughter's house in Cambridge still has one.

Are they keeping it for sentimental reasons or just not worth the hassle
of removing?

B2003

On Mon, 12 Sep 2011 13:30:09 +0100
Roland Perry wrote:
In message , at 11:35:18 on Mon, 12 Sep
2011, d remarked:
to be UK and the other to be France. Similar issues apply to Microcells
on an aircraft, how high off the runway does it have to be in order to
start charging at roaming rates, rather than UK?)

Presumably the ones in aircraft communicate to ground via satellite so
how do they keep the dish aligned when in flight?

Fairly straightforward servo system. It works on trains with satellite
wifi.

Not that straightforward I wouldn't have thought. Trains don't suffer
turbulence or bank at 20 degrees. Keeping a lock on must be an interesting
problem.

B2003

d wrote:
On Mon, 12 Sep 2011 13:30:09 +0100
Roland Perry wrote:
Fairly straightforward servo system. It works on trains with
satellite wifi.

Not that straightforward I wouldn't have thought. Trains don't suffer
turbulence or bank at 20 degrees. Keeping a lock on must be an
interesting problem.

I didn't know there was such a thing as satellite WiFi. Are these
geostationary (over the equator), or does the "straightforward servo system"
have to compute the satellite orbit too?

Mike.
--
If reply address is (invalid), remove spurious "@"
and substitute "plus" for +.

On Mon, 12 Sep 2011 13:52:52 +0100
"Mike Coon" wrote:
I didn't know there was such a thing as satellite WiFi. Are these
geostationary (over the equator), or does the "straightforward servo system"
have to compute the satellite orbit too?

Good point , and even if it is geostationary , what happens if the planes
route takes it over the horizon from the satellite?

B2003

In article , d ()
wrote:

On Mon, 12 Sep 2011 07:21:14 -0500
wrote:
In article , d
() wrote:

There was a BSB squarial on a wall in north finchley up until 2 years
ago when the building was redeveloped.

My daughter's house in Cambridge still has one.

Are they keeping it for sentimental reasons or just not worth the hassle
of removing?

In her case the latter I'm sure. It's attached to the chimney stack.

--
Colin Rosenstiel

In message , at 12:40:35 on Mon, 12 Sep
2011, d remarked:
Fairly straightforward servo system. It works on trains with satellite
wifi.

Not that straightforward I wouldn't have thought. Trains don't suffer
turbulence or bank at 20 degrees. Keeping a lock on must be an interesting
problem.

Never seen a flight simulator cabin close up? The servos in those move a
substantial weight very quickly and precisely.
--
Roland Perry