Company lists · Data refreshed October 2026
Top 25 Emi/rfi testing chambers suppliers based in the United States
RevenueBase identified 65 company matches for emi/rfi testing chambers suppliers associated with the United States as of October 2026 and tracks 757 professional contacts across them, including 260 with verified work emails. San Jose is the largest hub.
This list covers company matches for emi/rfi testing chambers suppliers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 25, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest emi/rfi testing chambers suppliers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 118 contacts → | ||||
Exact match “ARC Technologies Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 2 | 98 contacts → | ||||
Exact match “Founded in 1954, Elite Electronic Engineering, Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 3 | 60 contacts → | ||||
Exact match “Leader Tech is a world-leading innovator and U.S.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 4 | 52 contacts → | ||||
Exact match “AR RF/Microwave Instrumentation provides Total RF Test Solutions, by offering customers RF test instrumentation, RF test systems, EMC test software, and chambers.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 5 | 44 contacts → | ||||
Exact match “Has been the leader in solving both simple & complex shielding problems for nearly 40 years.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 6 | 25 contacts → | ||||
Exact match “NexTek is the premier source for Coaxial/RF Surge Protection and High Current EMC/EMI Filters.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 7 | 20 contacts → | ||||
Exact match “Equipto Electronics Corp is a premier provider of packaging solutions (COTS) for electronics.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 8 | 18 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 9 | 15 contacts → | ||||
Exact match “Spira has been a trusted partner to the EMC community since 1978, delivering precision-engineered solutions for Electromagnetic Interference (EMI) and Radio-Frequency Interference…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 10 | 14 contacts → | ||||
Exact match “From our launch in 1986, Braden Shielding Systems grew to be a worldwide leader in the design, manufacturing, and installation of Radio Frequency (RF) and Magnetic Shielding…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “Whether it’s a research center, medical facility, laboratory, or commercial/residential high-rise buildings, Vitatech has the expertise and experience to provide guaranteed…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 12 | 12 contacts → | ||||
Exact match “AP Americas is one of the leading global manufacturers of anechoic chambers and shielded rooms for various applications in EMC, antenna testing and high-frequency technology.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 13 | 12 contacts → | ||||
Exact match “EMC testing is our specialty.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 14 | 12 contacts → | ||||
Exact match “Specializes in EMC testing and approvals for FCC and CE Mark compliance under the Electromagnetic Compatibility Directive.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 15 | 11 contacts → | ||||
Exact match “The Enerdoor Group is an international leader in the development and production of EMC solutions for automated and industrial machinery.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 16 | 11 contacts → | ||||
Exact match “Shielding Resources Group is an electrical/electronic manufacturing company based out of 9512 E 55th St, Tulsa, Oklahoma, United States.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 17 | 10 contacts → | ||||
Exact match “UPDATE: The EMC Shop is now the parent company of ESDguns.com and the company page has been updated to reflect The EMC Shop - which does everything ESDguns.com offers with a wider…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 18 | 9 contacts → | ||||
Exact match “PMT Shielding Solutions, formerly known as Plastic-Metals Technologies, Inc, provides EMI & RFI shielding solutions to the Aerospace, Defense, Military, and Medical industries.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 19 | 9 contacts → | ||||
Exact match “Accredited, commercial EMC compliance testing with locations in California, Minnesota, Oregon, Washington, and Texas.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “Manufacturer's Representative organization covering all of California & Nevada.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 21 | 7 contacts → | ||||
Exact match “Transient Specialists is a leader in EMC test equipment rentals providing unparalleled customer support allowing for testing to be conducted in an efficient and cost manner.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “Field Management Services (FMS) is a professional engineering company, which was founded in 1995.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 23 | 6 contacts → | ||||
Exact match “SFI is the premier US manufacturer of Select-A-Shield™ EMI shielding and RF isolation products including portable, flexible, high-attenuation, custom EMI shielding tents…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “MAJR Products Corp.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “Shielding Integrity Services,(SIS) was founded in 1988.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “emi/rfi testing chambers suppliers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 65 emi/rfi testing chambers suppliers based in the United States
See the full list, filter by size, metro and specialty, and access 260 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Emi/rfi testing chambers suppliers based in the United States at a glance
As of Oct 25, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 65 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “emi/rfi testing chambers suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 260 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 25, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “emi/rfi testing chambers suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many emi/rfi testing chambers suppliers are there based in the United States?
RevenueBase identified 65 company matches for emi/rfi testing chambers suppliers associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
ARC Technologies Llc, A Hexcel Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most emi/rfi testing chambers suppliers?
San Jose leads with 3 company records, followed by Dublin (2) and Encinitas (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 260 professional contacts with verified work emails tracked across these 65 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 25, 2026.
Ready to reach these companies? Verified emails and direct dials for all 65 emi/rfi testing chambers suppliers based in the United States. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- New lists
- AI companies based in the United States
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Company intelligence · public preview
Top 25 emi/rfi testing chambers suppliers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 65 matching company records for emi/rfi testing chambers suppliers based in the United States, with 757 tracked contacts and 260 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 25, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 emi/rfi testing chambers suppliers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | ARC Technologies Llc, A Hexcel Companyarc-tech.com HQ: Amesbury, MA, United StatesReported employees: 51-200 | Amesbury, MA, United States | 51-200 | Exact match | 118 contacts → |
“ARC Technologies Inc.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Elite Electronic Engineering, INCelitetest.com HQ: Downers Grove, IL, United StatesReported employees: 51-200 | Downers Grove, IL, United States | 51-200 | Exact match | 98 contacts → |
“Founded in 1954, Elite Electronic Engineering, Inc.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Leader Tech INCleadertechinc.com HQ: Tampa, FL, United StatesReported employees: 51-200 | Tampa, FL, United States | 51-200 | Exact match | 60 contacts → |
“Leader Tech is a world-leading innovator and U.S.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Amplifier Researcharworld.us HQ: Souderton, PA, United StatesReported employees: 51-200 | Souderton, PA, United States | 51-200 | Exact match | 52 contacts → |
“AR RF/Microwave Instrumentation provides Total RF Test Solutions, by offering customers RF test instrumentation, RF test systems, EMC test software, and chambers.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Gaven Industriesgavenindustries.com HQ: Saxonburg, PA, United StatesReported employees: 51-200 | Saxonburg, PA, United States | 51-200 | Exact match | 44 contacts → |
“Has been the leader in solving both simple & complex shielding problems for nearly 40 years.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Nextek, LLCnextek.com HQ: North Billerica, MA, United StatesReported employees: 11-50 | North Billerica, MA, United States | 11-50 | Exact match | 25 contacts → |
“NexTek is the premier source for Coaxial/RF Surge Protection and High Current EMC/EMI Filters.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Equipto Electronics Corporationequiptoelec.com HQ: Aurora, IL, United StatesReported employees: 51-200 | Aurora, IL, United States | 51-200 | Exact match | 20 contacts → |
“Equipto Electronics Corp is a premier provider of packaging solutions (COTS) for electronics.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MTK Electronics, INCmtkelectronics.com HQ: Medford, NY, United StatesReported employees: 11-50 | Medford, NY, United States | 11-50 | Exact match | 18 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Spira EMI Gasketsspira-emi.com HQ: San Fernando, CA, United StatesReported employees: 51-200 | San Fernando, CA, United States | 51-200 | Exact match | 15 contacts → |
“Spira has been a trusted partner to the EMC community since 1978, delivering precision-engineered solutions for Electromagnetic Interference (EMI) and Radio-Frequency Interference…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Braden Shielding Systemsbradenshielding.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 14 contacts → |
“From our launch in 1986, Braden Shielding Systems grew to be a worldwide leader in the design, manufacturing, and installation of Radio Frequency (RF) and Magnetic Shielding…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Vitatech Electromagneticsvitatech.net HQ: Fredericksburg, VA, United StatesReported employees: 11-50 | Fredericksburg, VA, United States | 11-50 | Exact match | 14 contacts → |
“Whether it’s a research center, medical facility, laboratory, or commercial/residential high-rise buildings, Vitatech has the expertise and experience to provide guaranteed…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | AP Americas INCapamericas.com HQ: Irving, TX, United StatesReported employees: 11-50 | Irving, TX, United States | 11-50 | Exact match | 12 contacts → |
“AP Americas is one of the leading global manufacturers of anechoic chambers and shielded rooms for various applications in EMC, antenna testing and high-frequency technology.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Radiometrics Midwest Corporationradiomet.com HQ: Romeoville, IL, United StatesReported employees: 1-10 | Romeoville, IL, United States | 1-10 | Exact match | 12 contacts → |
“EMC testing is our specialty.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Compatible Electronics, INCcelectronics.com HQ: Lake Forest, CA, United StatesReported employees: 11-50 | Lake Forest, CA, United States | 11-50 | Exact match | 12 contacts → |
“Specializes in EMC testing and approvals for FCC and CE Mark compliance under the Electromagnetic Compatibility Directive.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Enerdoorenerdoor.com HQ: Portland, ME, United StatesReported employees: 201-500 | Portland, ME, United States | 201-500 | Exact match | 11 contacts → |
“The Enerdoor Group is an international leader in the development and production of EMC solutions for automated and industrial machinery.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Shielding Resources Groupshieldingresources.com HQ: Tulsa, OK, United StatesReported employees: 1-10 | Tulsa, OK, United States | 1-10 | Exact match | 11 contacts → |
“Shielding Resources Group is an electrical/electronic manufacturing company based out of 9512 E 55th St, Tulsa, Oklahoma, United States.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | The EMC Shoptheemcshop.com HQ: Roseville, CA, United StatesReported employees: 11-50 | Roseville, CA, United States | 11-50 | Exact match | 10 contacts → |
“UPDATE: The EMC Shop is now the parent company of ESDguns.com and the company page has been updated to reflect The EMC Shop - which does everything ESDguns.com offers with a wider…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | PMT Shielding Solutionsp-mtinc.com HQ: Tigard, OR, United StatesReported employees: 51-200 | Tigard, OR, United States | 51-200 | Exact match | 9 contacts → |
“PMT Shielding Solutions, formerly known as Plastic-Metals Technologies, Inc, provides EMI & RFI shielding solutions to the Aerospace, Defense, Military, and Medical industries.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Hillsboro, OR, United StatesReported employees: 11-50 | Hillsboro, OR, United States | 11-50 | Exact match | 9 contacts → |
“Accredited, commercial EMC compliance testing with locations in California, Minnesota, Oregon, Washington, and Texas.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Altamont Technical Servicesatsemc.com HQ: San Jose, CA, United StatesReported employees: 1-10 | San Jose, CA, United States | 1-10 | Exact match | 8 contacts → |
“Manufacturer's Representative organization covering all of California & Nevada.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Transient Specialists, INCtransientspecialists.com HQ: Burr Ridge, IL, United StatesReported employees: 1-10 | Burr Ridge, IL, United States | 1-10 | Exact match | 7 contacts → |
“Transient Specialists is a leader in EMC test equipment rentals providing unparalleled customer support allowing for testing to be conducted in an efficient and cost manner.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Field Management Servicesfms-corp.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 6 contacts → |
“Field Management Services (FMS) is a professional engineering company, which was founded in 1995.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Select Fabricators, INCselect-fabricators.com HQ: Victor, NY, United StatesReported employees: 11-50 | Victor, NY, United States | 11-50 | Exact match | 6 contacts → |
“SFI is the premier US manufacturer of Select-A-Shield™ EMI shielding and RF isolation products including portable, flexible, high-attenuation, custom EMI shielding tents…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Majr Productsmajr.com HQ: Saegertown, PA, United StatesReported employees: 11-50 | Saegertown, PA, United States | 11-50 | Exact match | 5 contacts → |
“MAJR Products Corp.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Shielding Integrity Serviceschambertest.com HQ: Colorado Springs, CO, United StatesReported employees: 1-10 | Colorado Springs, CO, United States | 1-10 | Exact match | 4 contacts → |
“Shielding Integrity Services,(SIS) was founded in 1988.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 65 company matches
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Emi/rfi testing chambers suppliers: dataset insights
October 25, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
65 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 65 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 25, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for emi/rfi testing chambers suppliers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many emi/rfi testing chambers suppliers did RevenueBase find based in the United States?
The saved snapshot records 65 matching company records, 757 tracked contacts and 260 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 25, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 emi/rfi testing chambers suppliers based in the United States. Snapshot: October 25, 2026. https://revenuebase.ai/companies/emi-rfi-testing-chambers-suppliers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States
Company intelligence · public preview
Top 25 emi/rfi testing chambers suppliers based in the United States
RevenueBase records 65 matching company records for emi/rfi testing chambers suppliers based in the United States, with 757 tracked contacts and 260 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 25, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 emi/rfi testing chambers suppliers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | ARC Technologies Llc, A Hexcel Companyarc-tech.com HQ: Amesbury, MA, United StatesReported employees: 51-200 | Amesbury, MA, United States | 51-200 | Exact match | 118 contacts → |
“ARC Technologies Inc.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Elite Electronic Engineering, INCelitetest.com HQ: Downers Grove, IL, United StatesReported employees: 51-200 | Downers Grove, IL, United States | 51-200 | Exact match | 98 contacts → |
“Founded in 1954, Elite Electronic Engineering, Inc.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Leader Tech INCleadertechinc.com HQ: Tampa, FL, United StatesReported employees: 51-200 | Tampa, FL, United States | 51-200 | Exact match | 60 contacts → |
“Leader Tech is a world-leading innovator and U.S.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Amplifier Researcharworld.us HQ: Souderton, PA, United StatesReported employees: 51-200 | Souderton, PA, United States | 51-200 | Exact match | 52 contacts → |
“AR RF/Microwave Instrumentation provides Total RF Test Solutions, by offering customers RF test instrumentation, RF test systems, EMC test software, and chambers.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Gaven Industriesgavenindustries.com HQ: Saxonburg, PA, United StatesReported employees: 51-200 | Saxonburg, PA, United States | 51-200 | Exact match | 44 contacts → |
“Has been the leader in solving both simple & complex shielding problems for nearly 40 years.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Nextek, LLCnextek.com HQ: North Billerica, MA, United StatesReported employees: 11-50 | North Billerica, MA, United States | 11-50 | Exact match | 25 contacts → |
“NexTek is the premier source for Coaxial/RF Surge Protection and High Current EMC/EMI Filters.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Equipto Electronics Corporationequiptoelec.com HQ: Aurora, IL, United StatesReported employees: 51-200 | Aurora, IL, United States | 51-200 | Exact match | 20 contacts → |
“Equipto Electronics Corp is a premier provider of packaging solutions (COTS) for electronics.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MTK Electronics, INCmtkelectronics.com HQ: Medford, NY, United StatesReported employees: 11-50 | Medford, NY, United States | 11-50 | Exact match | 18 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Spira EMI Gasketsspira-emi.com HQ: San Fernando, CA, United StatesReported employees: 51-200 | San Fernando, CA, United States | 51-200 | Exact match | 15 contacts → |
“Spira has been a trusted partner to the EMC community since 1978, delivering precision-engineered solutions for Electromagnetic Interference (EMI) and Radio-Frequency Interference…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Braden Shielding Systemsbradenshielding.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 14 contacts → |
“From our launch in 1986, Braden Shielding Systems grew to be a worldwide leader in the design, manufacturing, and installation of Radio Frequency (RF) and Magnetic Shielding…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Vitatech Electromagneticsvitatech.net HQ: Fredericksburg, VA, United StatesReported employees: 11-50 | Fredericksburg, VA, United States | 11-50 | Exact match | 14 contacts → |
“Whether it’s a research center, medical facility, laboratory, or commercial/residential high-rise buildings, Vitatech has the expertise and experience to provide guaranteed…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | AP Americas INCapamericas.com HQ: Irving, TX, United StatesReported employees: 11-50 | Irving, TX, United States | 11-50 | Exact match | 12 contacts → |
“AP Americas is one of the leading global manufacturers of anechoic chambers and shielded rooms for various applications in EMC, antenna testing and high-frequency technology.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Radiometrics Midwest Corporationradiomet.com HQ: Romeoville, IL, United StatesReported employees: 1-10 | Romeoville, IL, United States | 1-10 | Exact match | 12 contacts → |
“EMC testing is our specialty.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Compatible Electronics, INCcelectronics.com HQ: Lake Forest, CA, United StatesReported employees: 11-50 | Lake Forest, CA, United States | 11-50 | Exact match | 12 contacts → |
“Specializes in EMC testing and approvals for FCC and CE Mark compliance under the Electromagnetic Compatibility Directive.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Enerdoorenerdoor.com HQ: Portland, ME, United StatesReported employees: 201-500 | Portland, ME, United States | 201-500 | Exact match | 11 contacts → |
“The Enerdoor Group is an international leader in the development and production of EMC solutions for automated and industrial machinery.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Shielding Resources Groupshieldingresources.com HQ: Tulsa, OK, United StatesReported employees: 1-10 | Tulsa, OK, United States | 1-10 | Exact match | 11 contacts → |
“Shielding Resources Group is an electrical/electronic manufacturing company based out of 9512 E 55th St, Tulsa, Oklahoma, United States.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | The EMC Shoptheemcshop.com HQ: Roseville, CA, United StatesReported employees: 11-50 | Roseville, CA, United States | 11-50 | Exact match | 10 contacts → |
“UPDATE: The EMC Shop is now the parent company of ESDguns.com and the company page has been updated to reflect The EMC Shop - which does everything ESDguns.com offers with a wider…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | PMT Shielding Solutionsp-mtinc.com HQ: Tigard, OR, United StatesReported employees: 51-200 | Tigard, OR, United States | 51-200 | Exact match | 9 contacts → |
“PMT Shielding Solutions, formerly known as Plastic-Metals Technologies, Inc, provides EMI & RFI shielding solutions to the Aerospace, Defense, Military, and Medical industries.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Hillsboro, OR, United StatesReported employees: 11-50 | Hillsboro, OR, United States | 11-50 | Exact match | 9 contacts → |
“Accredited, commercial EMC compliance testing with locations in California, Minnesota, Oregon, Washington, and Texas.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Altamont Technical Servicesatsemc.com HQ: San Jose, CA, United StatesReported employees: 1-10 | San Jose, CA, United States | 1-10 | Exact match | 8 contacts → |
“Manufacturer's Representative organization covering all of California & Nevada.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Transient Specialists, INCtransientspecialists.com HQ: Burr Ridge, IL, United StatesReported employees: 1-10 | Burr Ridge, IL, United States | 1-10 | Exact match | 7 contacts → |
“Transient Specialists is a leader in EMC test equipment rentals providing unparalleled customer support allowing for testing to be conducted in an efficient and cost manner.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Field Management Servicesfms-corp.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 6 contacts → |
“Field Management Services (FMS) is a professional engineering company, which was founded in 1995.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Select Fabricators, INCselect-fabricators.com HQ: Victor, NY, United StatesReported employees: 11-50 | Victor, NY, United States | 11-50 | Exact match | 6 contacts → |
“SFI is the premier US manufacturer of Select-A-Shield™ EMI shielding and RF isolation products including portable, flexible, high-attenuation, custom EMI shielding tents…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Majr Productsmajr.com HQ: Saegertown, PA, United StatesReported employees: 11-50 | Saegertown, PA, United States | 11-50 | Exact match | 5 contacts → |
“MAJR Products Corp.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Shielding Integrity Serviceschambertest.com HQ: Colorado Springs, CO, United StatesReported employees: 1-10 | Colorado Springs, CO, United States | 1-10 | Exact match | 4 contacts → |
“Shielding Integrity Services,(SIS) was founded in 1988.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 65 company matches
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Emi/rfi testing chambers suppliers: dataset insights
October 25, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
65 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 65 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 25, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for emi/rfi testing chambers suppliers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many emi/rfi testing chambers suppliers did RevenueBase find based in the United States?
The saved snapshot records 65 matching company records, 757 tracked contacts and 260 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 25, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 emi/rfi testing chambers suppliers based in the United States. Snapshot: October 25, 2026. https://revenuebase.ai/companies/emi-rfi-testing-chambers-suppliers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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