TEMPEST Rooms and components

An increasingly electromagnetic environment caused by solar storms or weaponised (H)EMP could threaten your operations, leading to damaged electronics, data breaches, or espionage.

Unlike a standard RF-shielded room, a TEMPEST room combines high-performance electromagnetic shielding with specialised power-line filters, signal and communication filters, shielded ventilation panels, secure cable penetrations, and strict construction standards to ensure that data processed inside cannot be reconstructed or eavesdropped on from outside the facility.

TEMPEST rooms are often used by military, government, intelligence, financial, and critical infrastructure organisations to protect classified or confidential information from electronic surveillance and signals intelligence (SIGINT) threats.

We offer several solutions for the highest level of protection.

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TEMPEST Equipment Room

The most secure solution against espionage and radiation hazards is a TEMPEST-shielded Main Equipment Room that complies with SDIP27, SDIP29, MIL-STD-188-125-1, and NATO standards. Its key feature is a sluice gate with two interconnected RF-shielded doors that prevent compromising the Faraday Cage protection during daily use.

Visit the product page for technical details and to download the specifications PDF.

TEMPEST Conference Room

This room is shielded against radio frequency (RF) and acoustic interference, making it suitable for confidential meetings. It can accommodate topics from departmental secrets to state and top secret information. The space usually includes a conference table with chairs, a presentation screen, and optional video conferencing capabilities.

Visit the product page for technical details and to download the specifications PDF.

TEMPEST Encryption Room

A TEMPEST encryption room is more than just a secure space. It is a specially designed facility built to prevent classified information from unintentional leaking through electromagnetic emissions, power lines, cables, acoustics, vibrations, or other side channels that could be intercepted by an attacker. TEMPEST is part of EMSEC (Emission Security) and is commonly utilised by military, intelligence, government, financial and certain critical infrastructure organisations.

Visit the product page for technical details and to download the specifications PDF.

TEMPEST Equipment
Inspection Room

A Forensic TEMPEST Equipment Inspection Room is highly shielded to prevent interference during examing and certifying electronic devices against electromagnetic emissions and covert channels. It features an RF-shielded enclosure with 80–120 dB shielding, power line filters and data interfaces, shielded ventilation panels, controlled grounding, RF absorbers, and secure evidence facilities.

Our rooms can host TEMPEST measurement systems, such as EMI receivers, spectrum analysers, and near-field probes, enabling investigators to detect and analyse electromagnetic emissions from devices to assess data interception risks.

Visit the product page for technical details and to download the specifications PDF

TEMPEST Vehicle
Inspection Room

Our Forensic TEMPEST Vehicle Inspection Rooms are a secure RF-shielded facility specifically designed for inspecting, analysing, and testing vehicles for electromagnetic emissions, covert transmitters, tracking devices, unauthorised wireless communications, and potential information leaks. 

The room typically features a large, shielded enclosure with 4×4 metre vehicle access doors, high-performance electromagnetic shielding, filtered power and communication interfaces, shielded ventilation panels, controlled grounding and bonding, and, optionally, a vehicle lift for inspecting the vehicle’s underside. 

Visit the product page for technical details and to download the specifications PDF.

Components for
TEMPEST Rooms

If you want to build your own TEMPEST room, we provide several certified components such as doors, filtered power and communication interfaces, shielded ventilation panels, and waveguides for various feedthrough applications.

Visit the product page for technical details and to download the specifications PDF.

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Test execution very close to real-life

“Comtest is extremely flexible, forward-thinking and fast.
We are satisfied with our EMC chamber, which is set up to
provide us with load possibilities far beyond anything possible
with third-party testing solutions. This makes our test execution
very close to real-life usage of our products.”

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Tim Flintholm Fink
Director of Test, Validation and Engineering Support

Essential to ensure reliable testing

“NXP is located on the High-Tech campus in Eindhoven.
Here the electromagnetic spectrum is quite crowded.
Shielded rooms are essential to ensure reliable testing.
Our 3 Comtest RF-shielded facilities have never sat empty,
which speaks volumes regarding their value to us.”

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Hans Schmitz
Lab manager

Clear and candor way

“The clear and candor way Comtest
communicates, made it easy to
effectively determine the scope of
the project.”

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Rob Kleihorst
System Designer and EMC Lead, Image Guided Therapy

No risk of incompatibility

“Comtest delivers a turn-key solution,
so there’s no risk of incompatibility or
subpar calibration.”

Omar Romero
Engineer

Extremely motivated

“The Comtest team was extremely motivated
to create a unique type of chamber system that
hasn’t been built before.”

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Dr.-Ing. Hanno Frömming
Managing Director

Reputation for quality

“For the expansion of our testing capabilities we worked
with Comtest for the construction of a new,
oversized testing chamber. We chose to work with Comtest
based on their reputation for quality and the fact
that they’re a Dutch company.”

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Chiel Spithout
Senior Engineer

Works very fast and thoroughly

“At Emitech, there are over 40 different types of testing
chambers to fit any testing. Comtest has built many of them
and works very fast and thoroughly. They completed our latest
3M SAC setup within one week. We look forward to working
with Comtest on future projects.”

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Our services include maintenance and validated testing. We recommend that both are executed by authorized personnel only. Our expert teams can perform preventive maintenance on RF-shielded doors, mode-stirrer systems, and positioning equipment such as turntables. We also offer validation services to see if your EMC test chamber or RF-shielded room still functions within its intended limits and avoiding unexpected down-time or product recalls at the same time.

Our services include maintenance and validated testing. We recommend that both are executed by authorized personnel only. Our expert teams can perform preventive maintenance on RF-shielded doors, mode-stirrer systems, and positioning equipment such as turntables. We also offer validation services to see if your EMC test chamber or RF-shielded room still functions within its intended limits and avoiding unexpected down-time or product recalls at the same time.

A shielded room can perform conducted emission and immunity EMC measurements, eliminating harmful external influences, leading to more accurate and consistent test results. Being a Faraday cage, a shielded room will not only improve test results but will also form an excellent aid in protecting information and essential hardware. Comtest can assist governments, the military, financial institutions, and large corporations in protecting what matters most in critical situations. We offer the highest quality, sensitivity, and security before, during and after working with you.

A shielded room can perform conducted emission and immunity EMC measurements, eliminating harmful external influences, leading to more accurate and consistent test results. Being a Faraday cage, a shielded room will not only improve test results but will also form an excellent aid in protecting information and essential hardware. Comtest can assist governments, the military, financial institutions, and large corporations in protecting what matters most in critical situations. We offer the highest quality, sensitivity, and security before, during and after working with you.

Comtest has been building high-quality antenna test ranges for more than 20 years. We are dedicated to putting our experience to work for you, turning any problem you might have into a customized test solution. As for researching and developing your products, we know speed and return on investment are very important. That’s why we ensure your project is delivered on schedule, on budget and exactly as ordered.

Comtest has been building high-quality antenna test ranges for more than 20 years. We are dedicated to putting our experience to work for you, turning any problem you might have into a customized test solution. As for researching and developing your products, we know speed and return on investment are very important. That’s why we ensure your project is delivered on schedule, on budget and exactly as ordered.

Comtest offers semi and full anechoic chambers that shield almost 100% of ambient emissions and reflect minimal internal radiation. We deliver or build your custom test chamber at your location, depending on what size chamber you need. If you tell us your challenges, we’ll offer a tailored turnkey solution from design to installation, including upgrades and yearly certifications.

We are committed to helping you achieve the best EMC testing possible. 

Comtest offers semi and full anechoic chambers that shield almost 100% of ambient emissions and reflect minimal internal radiation. We deliver or build your custom test chamber at your location, depending on what size chamber you need. If you tell us your challenges, we’ll offer a tailored turnkey solution from design to installation, including upgrades and yearly certifications.

We are committed to helping you achieve the best EMC testing possible.