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Audiotel International Ltd. is a company in Corby, Newhampshire (UK)
who has been developing and manufacturing TSCM equipment (Technical
Surveillance Counter Measures) since the early 1970s. They are among
the first companies to build bug-finding receivers for the professional
market. Most Audiotel equipment is sold to TSCM companies and governmental
bodies.
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Some of their well-known early products are described in this section,
such as the Scanlock Mark VB that was described
in Keith Melton's book Ultimate Spy
[1]
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Other popular Scanlocks are the Scanlock 2000,
the Scanlock ECM
and the Scanlock Broom.
It is little known that, besides bug-finders, Audiotel has also
developed and manufactured a range of
surveillance radios;
small radio transceivers that could easily be hidden under the
operator's clothing and were used for covert operations.
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Today, Audiotel is still actively developing TSCM equipment, which is
sold in over 90 countries around the world. Their current products
include the Scanlock M2, Scanlock M3, the SuperBroom and much more.
In this section, the TSCM receivers are covered. Click any of the
thumbnails below for further information.
Scanlock Receivers
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The Scanlock Mark VB is one of the first bug finders developed by
Audiotel, shortly after the company was established in the early 1970s.
It's a fully analog receiver that can automatically search for
hidden bugs within a room.
 More information
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The next generation of TSCM receivers from Audiotel had a digital
readout and were in part digitally controlled. It was developed in
the early 1980s.
More information
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The Scanlock ECM was a TSCM receiver that was under full
digital control. It was developed and manufactured around 1989.
More information
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The Broom is one of the first Non-Linear Junction Detectors (NLJD).
It can find an electronic circuit hidden in, say, a wall, even when
it is not turned on.
More information
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- [1] H. Keith Melton, Ultimate spy.
ISBN: 0-7513-4791-4, 1996-2002
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