Electromagnetic Masking

An Electromagnetic Masking (EMM or Electro-Magnetic Masking) package hides a craft's electromagnetic emissions in all bands (radio, IR, visible, UV, X-Ray), thus rendering it invisible to passive EMS.

• It is a countermeasure against Sensors.
• It may be referred to as "Stealth Technology".
• It is an electronic device that is a kind of Ship Equipment.

Description (Specifications)

An electromagnetic masking package reduces a ship's or vehicle's electromagnetic emissions and its sensor signature in all bands, thus making it harder to detect using passive sensors.

• EMM is an advanced form of stealth design, and includes radiators to dissipate immense IR signatures as well as more advanced electromagnetic absorbing material.
• An EMM package does not mask any active electromagnetic sensors or emissions. It does not mask the craft from active sensor scans conducted by other craft.

EMM Stealth Methodologies

The EMM package is applied across the whole of the hull and may include features such as camouflage patterns (to counter optical sensors such as binoculars), angled surfaces, energy absorbent materials, prismatic or reflec surfaces, physical masking and shielding, and cooling systems.

• It is a passive system.

Electromagnetic Masking (EMM): Ships which are equipped with electromagnetic masking (EMM) packages reduce the effectiveness of active and passive sensors which are used against them. EMM not only disguises a vessel's passive (heat) signature, it also includes the use of stealthy materials to reduce the echo of active sensor energy, and so EMM on the target creates more difficulty for both active and passive detection attempts.

History & Background (Dossier)

Dedicated EMM Packages are available at TL–10 and higher.

• EMM is an evolutionary design and is available from very early tech levels. Aspects of EMM are added to the package as new designs of sensor become available.
• Prototype EMM may be available at lower TLs.

References & Contributors (Sources)

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Marc Miller. Referee's Manual (Game Designers Workshop, 1987), 68, 89.
• Frank Chadwick, Dave Nilsen. Traveller: The New Era (Game Designers Workshop, 1993), 53.
• Frank Chadwick, Dave Nilsen. Fire, Fusion, & Steel (Game Designers Workshop, 1994), 44, 53.
• Don Perrin. Starships (Imperium Games, 1996), 73.
• Thomas L. Bont, Robert Prior, Christopher Thrash. Starships (Steve Jackson Games, 2003), 21, 31-32.
• Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), TBD.
• Traveller Wiki Editorial Team
• Author & Contributor: Lord (Marquis) and Master Scout Emeritus Adie Alegoric Stewart of the IISS
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science