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Old September 12th 11, 01:21 PM posted to uk.transport.london
[email protected] rosenstiel@cix.compulink.co.uk is offline
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Default Public internet access on the london underground

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