Anechoic chambers are critical infrastructure for EMC compliance, antenna measurement, and wireless certification across the defense, aerospace, automotive, telecom, and medical device industries. The manufacturer you choose affects test accuracy, project timelines, and how well your facility performs for years to come.
This guide ranks the top 20 anechoic chamber manufacturers in the USA — covering RF/EMC chamber specialists as well as leading acoustic (sound) anechoic chamber builders — with their location, chamber type, and core applications.
1. Diamond Microwave Chambers Ltd (DMC)
- Location: Los Angeles, CA (DMC USA); global HQ in Ottawa, Canada, with additional manufacturing facilities in the USA and India
- Website: dmcrf.com
- Chamber Type: Full & semi-anechoic RF chambers, RF/EMI shielded rooms, antenna measurement systems
- Applications: Defense, aerospace, space & satellite, semiconductor, automotive
DMC designs and manufactures turnkey RF shielding and antenna measurement solutions — from chamber engineering and absorber selection through installation, calibration, and support — for defense, aerospace, and semiconductor programs across North America.
2. ETS-Lindgren
- Location: Cedar Park, TX
- Website: ets-lindgren.com
- Chamber Type: Full & semi-anechoic chambers, Compact Antenna Test Ranges (CATR), OTA & mmWave enclosures
- Applications: EMC compliance, automotive, wireless/5G certification, defense, medical
One of the most established names in RF test infrastructure, ETS-Lindgren builds chambers ranging from small OTA enclosures to large mmWave-capable compact ranges for compliance labs worldwide.
3. MVG (Microwave Vision Group)
- Location: San Diego, CA (North America HQ); global HQ in France
- Website: mvg-world.com
- Chamber Type: Anechoic & EMC chambers, compact antenna test ranges, near-field/far-field systems
- Applications: Telecommunications, aerospace & defense, automotive radar, academic/research
MVG supplies turnkey anechoic chambers and antenna measurement systems, with its SmartShield modular shielding technology widely used in CISPR and automotive EMC facilities.
4. NSI-MI Technologies
- Location: Suwanee, GA
- Website: nsi-mi.com
- Chamber Type: Anechoic chambers, near-field & far-field antenna test systems, compact ranges
- Applications: Aerospace, satellite, automotive, wireless, defense
NSI-MI designs precision antenna and RF measurement chambers used for radome, radar cross-section, and satellite payload testing.
5. Braden Shielding Systems
- Location: Tulsa, OK
- Website: bradenshielding.com
- Chamber Type: RF & magnetic shielded enclosures, anechoic and EMC chambers, MRI enclosures
- Applications: Medical, commercial, defense
A worldwide leader in RF and magnetic shielding since 1986, Braden expanded further in 2023 by acquiring EMC chamber specialist Panashield.
6. TDK RF Solutions
- Location: Cedar Park, TX
- Website: tdkrfsolutions.tdk.com
- Chamber Type: Fully & semi-anechoic EMC chambers with proprietary hybrid absorbers
- Applications: EMC compliance testing, antenna measurement
Backed by TDK Corporation, this manufacturer builds and installs turnkey chambers using its own ferrite-and-foam hybrid absorber technology.
7. AR RF/Microwave Instrumentation (an AMETEK CTS company)
- Location: Souderton, PA
- Website: arworld.us
- Chamber Type: Anechoic & reverberation chambers integrated with EMC amplifiers and antennas
- Applications: Defense, aerospace, automotive, medical, communications
Supplying RF test systems since 1969, AR added complete anechoic and reverberation chamber solutions following its 2023 acquisition by AMETEK CTS.
8. Cuming Microwave Corp.
- Location: Avon, MA
- Website: cumingmicrowave.com
- Chamber Type: Anechoic, EMI/RFI shielding, and electronics stress-screening chambers; compact & near-field ranges
- Applications: EMC/FCC compliance, antenna testing
Cuming Microwave designs and constructs custom EMC facilities, pairing chamber fabrication with its own in-house absorber manufacturing.
9. ARC Technologies (a Hexcel company)
- Location: Amesbury, MA
- Website: arc-tech.com
- Chamber Type: RF/microwave absorber materials for anechoic chamber lining
- Applications: Military, aerospace, commercial electronics
A leading supplier of custom microwave-absorbing composites, ARC Technologies’ materials line the interiors of anechoic chambers built by integrators across the industry.
10. Lehman Chambers
- Location: Chambersburg, PA
- Website: cuminglehman.com
- Chamber Type: RF shielded enclosures and anechoic chambers
- Applications: Commercial & military applications
Operating since 1951, Lehman Chambers designs and builds custom RF shielded enclosures, chamber retrofits, and relocations for long-standing government and industrial clients.
11. Isotech, Inc.
- Location: Hatfield, PA
- Website: isotechinc.com
- Chamber Type: Turnkey anechoic & electromagnetic shielded chambers
- Applications: 5G, EMI/EMC, RF & microwave testing; academic, automotive, research, defense
Isotech builds turnkey EMI/EMC and 5G-ready test chambers serving research institutions and defense contractors.
12. Shielding Resources Group, Inc.
- Location: Tulsa, OK
- Website: shieldingresources.com
- Chamber Type: EMI/RFI anechoic & ferrite-shielded enclosures
- Applications: Medical, commercial, government
This Tulsa-based manufacturer specializes in electrically bonded honeycomb shielding, plus anechoic and ferrite enclosure installation and refurbishment.
13. Milliwave Silicon Solutions, Inc.
- Location: San Jose, CA
- Website: millibox.org
- Chamber Type: Bench-top anechoic chambers, antenna positioners, gimbals
- Applications: Automotive radar, space, satellite communications, defense
A newer entrant focused on compact mmWave test systems, Milliwave builds bench-top anechoic solutions for automotive and satellite antenna validation.
14. TruProtect
- Location : Lubbock, TX
- Website: truprotect.com
- Chamber Type: RFI-shielded anechoic chambers
- Applications: RFID tag testing
TruProtect manufactures ASTM-compliant, UL-listed anechoic chambers purpose-built for
passive RFID tag performance testing.
15. GPS Specialty Doors Inc.
- Location: Passaic, NJ
- Website: gps-door.com
- Chamber Type: RF/EMI shielded doors and specialty chamber access systems
- Applications: Commercial, military, and large-format shielded facilities
GPS Specialty Doors manufactures the shielded doors and access systems that chamber integrators rely on to complete large commercial and military installations.
16. Zhuhai Bojay Electronics (5G RF Box)
- Location: Sunnyvale, CA (US office); Zhuhai, China (global HQ)
- Website: 5grfbox.com
- Chamber Type: Anechoic chambers and RF shield boxes for OTA/PCBA testing
- Applications: Consumer electronics, automotive, medical, industrial devices
Bojay supplies high-volume RF shield boxes and anechoic enclosures used for OTA testing of phones, tablets, and connected devices.
17. Ocellott
- Location: Daytona Beach, FL
- Website: ocellott.com
- Chamber Type: Electromagnetic anechoic boxes and shielded rooms
- Applications: Military command, control, and radio hardware testing
Ocellott builds shielded rooms and anechoic enclosures alongside its broader line of EMI/EMC filtering and defense electronics products.
18. Eckel Industries, Inc. (Acoustic Division)
- Location: Ayer, MA
- Website: eckelusa.com
- Chamber Type: Acoustic & hemi-anechoic sound chambers
- Applications: Acoustic testing, R&D, calibration labs
Manufacturing since 1953, Eckel builds standard and custom acoustic anechoic chambers with isolated floors and integrated ventilation and instrumentation.
19. IAC Acoustics
- Location: Naperville, IL
- Website: iacacoustics.com
- Chamber Type: Acoustic & hemi-anechoic sound chambers, audiology booths
- Applications: Industrial, architectural, medical
In business since 1949, IAC Acoustics is one of the most recognized names in sound-isolated testing environments, including automotive NVH and dyno test rooms.
20. Acoustical Solutions, Inc.
- Location: Richmond, VA
- Website: acousticalsolutions.com
- Chamber Type: Acoustic test chambers, including anechoic chambers
- Applications: Sound absorption and acoustic measurement applications
Acoustical Solutions manufactures and distributes acoustic test chambers built with anechoic wedge and foam treatments for sound testing and OSHA compliance.
How to Choose an Anechoic Chamber Manufacturer
- Match chamber type to your test requirement. Full anechoic, semi-anechoic, CATR, and acoustic chambers each serve different standards (CISPR, MIL-STD-461, ANSI C63.4).
- Check frequency range and quiet-zone performance. Confirm the absorber system supports your highest test frequency, including 5G/mmWave if needed.
- Verify turnkey capability. The strongest manufacturers handle design, absorber selection, shielding, installation, and calibration as one project.
- Confirm compliance standards. CISPR, FCC Part 15, MIL-STD-461, and ISO 11452 support should be confirmed upfront.
Plan for long-term support. Maintenance, retrofits, and recalibration matter as much as the initial build.
Frequently Asked Questions
1. What is an anechoic chamber used for?
Anechoic chambers create a reflection-free RF or acoustic environment for EMC compliance testing, antenna pattern measurement, wireless certification, and product noise testing.
2. How much does an anechoic chamber cost?
Costs range from roughly $250,000 for small OTA or pre-compliance chambers to $5 million or more for large, custom-engineered facilities.
3. What's the difference between a full and semi-anechoic chamber?
Full anechoic chambers absorb energy on all six surfaces, including the floor. Semi-anechoic chambers leave a reflective floor to simulate ground-plane conditions required by automotive and consumer EMC standards.
4. Which industries rely on anechoic chambers?
Telecommunications, aerospace, defense, automotive, semiconductor, and medical device industries all depend on anechoic chambers for compliance and R&D testing.
Conclusion
From full-service RF chamber manufacturers like DMC, ETS-Lindgren, and MVG to specialized absorber and shielding suppliers, the USA anechoic chamber market offers solutions for nearly every compliance and testing need. For end-to-end chamber design, manufacturing, and installation support, DMC’s engineering team can help scope the right solution for your facility.