[Scan-DC] News Article...

Tue, 13 Apr 2004 16:11:15 -0400

You would need a BDA (Bi-Directional Amplifier (or it's own repeater
system)) and Radiax designed for the frequencies you want coverage for =
in a
tunnel. The Radiax is "leaky coax" that is strung throughout the tunnels =
and
picks up and radiates RF about 20-30' off the entire length.

The Underground's radio system is setup this way but not the Police.

Here is a good article
http://www.andrew.com/search/docviewer.aspx?docid=3D1542

Gary Mitchelson
USAF MARS and SHARES station AFA1PU
Maryland/DC USAF MARS SMD AFF1MD
USAF MARS Region 1 MTS AFF1M
SHARES ALE Callsign AFA1PUMARS
Phone com:(443)479-0361 | DSN 689-0361

-----Original Message-----
From: [email protected] =
[mailto:[email protected]]
On Behalf Of Dorset, Thomas
Sent: Tuesday, April 13, 2004 08:58
To: [email protected]
Subject: [Scan-DC] News Article...

I know my Verizon cell phone works in the Metro and I can hear Metro
operations on two VHF freqs with my Kenwood HT but I wonder if the MPD's
radios work there?

5/04/04 - London news section

Police lose bombing suspect in Tube chase
By Sabi Phagura, Evening Standard

A suspected suicide bomber escaped on the Tube because pursuing officers
lost radio contact underground, it has emerged.

Scotland Yard officers privately fear they cannot properly protect =
civilians
because police radios do not work on the network.

The man was followed after a tip-off that he was going to blow himself =
up at
a Burger King in Leicester Square.