Company lists · Data refreshed October 2026
Top 23 Radio frequency interference (rfi) filter suppliers based in the United States
RevenueBase identified 46 company matches for radio frequency interference (rfi) filter suppliers associated with the United States as of October 2026 and tracks 484 professional contacts across them, including 165 with verified work emails. San Diego is the largest hub.
This list covers company matches for radio frequency interference (rfi) filter 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 29, 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 23 largest radio frequency interference (rfi) filter suppliers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 60 contacts → | ||||
Exact match “Leader Tech is a world-leading innovator and U.S.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 2 | 46 contacts → | ||||
Exact match “Resonant, Murata Company, provides radio frequency (RF) filter solutions, developed on a robust intellectual property platform, that connect People and Things.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 3 | 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 29, 2026 · View company records in RevenueBase | |||||
| 4 | 24 contacts → | ||||
Exact match “Wi2Wi is a specialized electronic component supplier with expertise in all aspects of frequency control devices.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 5 | 23 contacts → | ||||
Exact match “Networks International Corporation (NIC) is a leading manufacturer of custom RF & Microwave Filters and Assemblies.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 6 | 21 contacts → | ||||
Exact match “MCV Microwave has established itself as a one-stop-shop leader in RF microwave filters, antenna, and dielectric resonators since 1995.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 7 | 20 contacts → | ||||
Exact match “Curtis Industries is a manufacturer of both standard and custom terminal blocks and EMI/RFI filters as well as a variety of custom controls and cable assemblies.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 8 | 20 contacts → | ||||
Exact match “Quell is the maker of the EESeal FilterSeals brand of EMI Filters, Retrofit Inserts, and Transient Suppressors.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 9 | 18 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 10 | 17 contacts → | ||||
Exact match “Established in 1959, WEMS Electronics is a full service turn-key Small Business with an extensive complex specializing in state-of-the-art EMI custom filters, engineering and…” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “Manufacturer of custom RF/Microwave filters for communications, navigation, EW applications” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 12 | 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 29, 2026 · View company records in RevenueBase | |||||
| 13 | 15 contacts → | ||||
Exact match “Microwave Filter Company, Inc.(MFC) has been a leader in the design, development and manufacture of high quality filter products since 1967.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 14 | 12 contacts → | ||||
Exact match “Lark Engineering provides custom RF and microwave solutions designed to meet the technical, regulatory, and performance requirements of complex programs.” Recorded in the RevenueBase company graph · Oct 29, 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 29, 2026 · View company records in RevenueBase | |||||
| 16 | 9 contacts → | ||||
Exact match “East Coast Shielding specializes in providing top-tier EMI gaskets, RFI shielding, and EMI RFI shielding solutions to meet our customers' unique demands.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 17 | 9 contacts → | ||||
Exact match “EMI Solutions is a premier Southern California manufacturer of EMI Filters and Filtered Connectors and Transient Suppression products serving the Military, Medical and Industrial…” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “MAJR Products Corp.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “Pioneer in Designing and Developing RF Filter Technology Telonic is in business since 1958 Following Products designed and manufacture in US RF Fixed Frequency Filters RF Tunable…” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “Custom design and high volume manufacturing of RF and Microwave filters and filter based products for Military, Commercial, Wireless and Space Applications” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “We specialize in high temperature, high reliability and highest energy density electronic components, power sub-system design and custom EMI, TVS and ESD filters.” Recorded in the RevenueBase company graph · Oct 29, 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 “radio frequency interference (rfi) filter 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 23 of 46 radio frequency interference (rfi) filter suppliers based in the United States
See the full list, filter by size, metro and specialty, and access 165 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Radio frequency interference (rfi) filter suppliers based in the United States at a glance
As of Oct 29, 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 46 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 “radio frequency interference (rfi) filter 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 165 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 29, 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 “radio frequency interference (rfi) filter suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many radio frequency interference (rfi) filter suppliers are there based in the United States?
RevenueBase identified 46 company matches for radio frequency interference (rfi) filter 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?
Leader Tech INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most radio frequency interference (rfi) filter suppliers?
San Diego leads with 3 company records, followed by Albuquerque (2) and Ann Arbor (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 165 professional contacts with verified work emails tracked across these 46 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 46 radio frequency interference (rfi) filter 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.
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Company intelligence · public preview
Top 23 radio frequency interference (rfi) filter 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 46 matching company records for radio frequency interference (rfi) filter suppliers based in the United States, with 484 tracked contacts and 165 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 29, 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 23 radio frequency interference (rfi) filter 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 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Resonant Inc., A Murata Companyresonant.com HQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 46 contacts → |
“Resonant, Murata Company, provides radio frequency (RF) filter solutions, developed on a robust intellectual property platform, that connect People and Things.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Wi2wi Corporation Precision Deviceswi2wi.com HQ: Middleton, WI, United StatesReported employees: 51-200 | Middleton, WI, United States | 51-200 | Exact match | 24 contacts → |
“Wi2Wi is a specialized electronic component supplier with expertise in all aspects of frequency control devices.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Networks International Corporationnickc.com HQ: Overland Park, KS, United StatesReported employees: 11-50 | Overland Park, KS, United States | 11-50 | Exact match | 23 contacts → |
“Networks International Corporation (NIC) is a leading manufacturer of custom RF & Microwave Filters and Assemblies.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | MCV Microwave East, INCmcv-microwave.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 21 contacts → |
“MCV Microwave has established itself as a one-stop-shop leader in RF microwave filters, antenna, and dielectric resonators since 1995.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Milwaukee, WI, United StatesReported employees: 51-200 | Milwaukee, WI, United States | 51-200 | Exact match | 20 contacts → |
“Curtis Industries is a manufacturer of both standard and custom terminal blocks and EMI/RFI filters as well as a variety of custom controls and cable assemblies.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Quell Corporationeeseal.com HQ: Albuquerque, NM, United StatesReported employees: 51-200 | Albuquerque, NM, United States | 51-200 | Exact match | 20 contacts → |
“Quell is the maker of the EESeal FilterSeals brand of EMI Filters, Retrofit Inserts, and Transient Suppressors.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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. | |||||
| 10 | Wems Electronicswems.com HQ: Hawthorne, CA, United StatesReported employees: 11-50 | Hawthorne, CA, United States | 11-50 | Exact match | 17 contacts → |
“Established in 1959, WEMS Electronics is a full service turn-key Small Business with an extensive complex specializing in state-of-the-art EMI custom filters, engineering and…” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Comnav Engineering, INCcomnav-eng.com HQ: Portland, United StatesReported employees: 11-50 | Portland, United States | 11-50 | Exact match | 16 contacts → |
“Manufacturer of custom RF/Microwave filters for communications, navigation, EW applications” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Microwave Filter Companymicrowavefilter.com HQ: East Syracuse, NY, United StatesReported employees: 11-50 | East Syracuse, NY, United States | 11-50 | Exact match | 15 contacts → |
“Microwave Filter Company, Inc.(MFC) has been a leader in the design, development and manufacture of high quality filter products since 1967.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Lark Engineeringlarkengineering.com HQ: Anaheim, CA, United StatesReported employees: 201-500 | Anaheim, CA, United States | 201-500 | Exact match | 12 contacts → |
“Lark Engineering provides custom RF and microwave solutions designed to meet the technical, regulatory, and performance requirements of complex programs.” Recorded description excerpt · October 29, 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | East Coast Shieldingeastcoastshielding.com HQ: Johnsonburg, NJ, United StatesReported employees: 11-50 | Johnsonburg, NJ, United States | 11-50 | Exact match | 9 contacts → |
“East Coast Shielding specializes in providing top-tier EMI gaskets, RFI shielding, and EMI RFI shielding solutions to meet our customers' unique demands.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 9 contacts → |
“EMI Solutions is a premier Southern California manufacturer of EMI Filters and Filtered Connectors and Transient Suppression products serving the Military, Medical and Industrial…” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Filtronetics, INCfiltro.net HQ: Kansas City, MO, United StatesReported employees: 11-50 | Kansas City, MO, United States | 11-50 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Telonic Berkeley INCtelonicberkeley.com HQ: Vista, CA, United StatesReported employees: 11-50 | Vista, CA, United States | 11-50 | Exact match | 3 contacts → |
“Pioneer in Designing and Developing RF Filter Technology Telonic is in business since 1958 Following Products designed and manufacture in US RF Fixed Frequency Filters RF Tunable…” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bext INCbext.com HQ: San Diego, CA, United StatesReported employees: 1-10 | San Diego, CA, United States | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Eastern Wireless Telecomm INCewtfilters.com HQ: Salisbury, MD, United StatesReported employees: 11-50 | Salisbury, MD, United States | 11-50 | Exact match | 2 contacts → |
“Custom design and high volume manufacturing of RF and Microwave filters and filter based products for Military, Commercial, Wireless and Space Applications” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Joule Sales & Marketing, LLCjoulesales.com HQ: Georgetown, TX, United StatesReported employees: 1-10 | Georgetown, TX, United States | 1-10 | Exact match | 2 contacts → |
“We specialize in high temperature, high reliability and highest energy density electronic components, power sub-system design and custom EMI, TVS and ESD filters.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 46 company matches
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Radio frequency interference (rfi) filter suppliers: dataset insights
October 29, 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
46 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 46 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 29, 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 radio frequency interference (rfi) filter 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 radio frequency interference (rfi) filter suppliers did RevenueBase find based in the United States?
The saved snapshot records 46 matching company records, 484 tracked contacts and 165 verified emails. The public preview displays 23 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 29, 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 23 radio frequency interference (rfi) filter suppliers based in the United States. Snapshot: October 29, 2026. https://revenuebase.ai/companies/radio-frequency-interference-rfi-filter-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 23 radio frequency interference (rfi) filter suppliers based in the United States
RevenueBase records 46 matching company records for radio frequency interference (rfi) filter suppliers based in the United States, with 484 tracked contacts and 165 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 29, 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 23 radio frequency interference (rfi) filter 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 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Resonant Inc., A Murata Companyresonant.com HQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 46 contacts → |
“Resonant, Murata Company, provides radio frequency (RF) filter solutions, developed on a robust intellectual property platform, that connect People and Things.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Wi2wi Corporation Precision Deviceswi2wi.com HQ: Middleton, WI, United StatesReported employees: 51-200 | Middleton, WI, United States | 51-200 | Exact match | 24 contacts → |
“Wi2Wi is a specialized electronic component supplier with expertise in all aspects of frequency control devices.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Networks International Corporationnickc.com HQ: Overland Park, KS, United StatesReported employees: 11-50 | Overland Park, KS, United States | 11-50 | Exact match | 23 contacts → |
“Networks International Corporation (NIC) is a leading manufacturer of custom RF & Microwave Filters and Assemblies.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | MCV Microwave East, INCmcv-microwave.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 21 contacts → |
“MCV Microwave has established itself as a one-stop-shop leader in RF microwave filters, antenna, and dielectric resonators since 1995.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Milwaukee, WI, United StatesReported employees: 51-200 | Milwaukee, WI, United States | 51-200 | Exact match | 20 contacts → |
“Curtis Industries is a manufacturer of both standard and custom terminal blocks and EMI/RFI filters as well as a variety of custom controls and cable assemblies.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Quell Corporationeeseal.com HQ: Albuquerque, NM, United StatesReported employees: 51-200 | Albuquerque, NM, United States | 51-200 | Exact match | 20 contacts → |
“Quell is the maker of the EESeal FilterSeals brand of EMI Filters, Retrofit Inserts, and Transient Suppressors.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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. | |||||
| 10 | Wems Electronicswems.com HQ: Hawthorne, CA, United StatesReported employees: 11-50 | Hawthorne, CA, United States | 11-50 | Exact match | 17 contacts → |
“Established in 1959, WEMS Electronics is a full service turn-key Small Business with an extensive complex specializing in state-of-the-art EMI custom filters, engineering and…” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Comnav Engineering, INCcomnav-eng.com HQ: Portland, United StatesReported employees: 11-50 | Portland, United States | 11-50 | Exact match | 16 contacts → |
“Manufacturer of custom RF/Microwave filters for communications, navigation, EW applications” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Microwave Filter Companymicrowavefilter.com HQ: East Syracuse, NY, United StatesReported employees: 11-50 | East Syracuse, NY, United States | 11-50 | Exact match | 15 contacts → |
“Microwave Filter Company, Inc.(MFC) has been a leader in the design, development and manufacture of high quality filter products since 1967.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Lark Engineeringlarkengineering.com HQ: Anaheim, CA, United StatesReported employees: 201-500 | Anaheim, CA, United States | 201-500 | Exact match | 12 contacts → |
“Lark Engineering provides custom RF and microwave solutions designed to meet the technical, regulatory, and performance requirements of complex programs.” Recorded description excerpt · October 29, 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | East Coast Shieldingeastcoastshielding.com HQ: Johnsonburg, NJ, United StatesReported employees: 11-50 | Johnsonburg, NJ, United States | 11-50 | Exact match | 9 contacts → |
“East Coast Shielding specializes in providing top-tier EMI gaskets, RFI shielding, and EMI RFI shielding solutions to meet our customers' unique demands.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 9 contacts → |
“EMI Solutions is a premier Southern California manufacturer of EMI Filters and Filtered Connectors and Transient Suppression products serving the Military, Medical and Industrial…” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Filtronetics, INCfiltro.net HQ: Kansas City, MO, United StatesReported employees: 11-50 | Kansas City, MO, United States | 11-50 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Telonic Berkeley INCtelonicberkeley.com HQ: Vista, CA, United StatesReported employees: 11-50 | Vista, CA, United States | 11-50 | Exact match | 3 contacts → |
“Pioneer in Designing and Developing RF Filter Technology Telonic is in business since 1958 Following Products designed and manufacture in US RF Fixed Frequency Filters RF Tunable…” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bext INCbext.com HQ: San Diego, CA, United StatesReported employees: 1-10 | San Diego, CA, United States | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Eastern Wireless Telecomm INCewtfilters.com HQ: Salisbury, MD, United StatesReported employees: 11-50 | Salisbury, MD, United States | 11-50 | Exact match | 2 contacts → |
“Custom design and high volume manufacturing of RF and Microwave filters and filter based products for Military, Commercial, Wireless and Space Applications” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Joule Sales & Marketing, LLCjoulesales.com HQ: Georgetown, TX, United StatesReported employees: 1-10 | Georgetown, TX, United States | 1-10 | Exact match | 2 contacts → |
“We specialize in high temperature, high reliability and highest energy density electronic components, power sub-system design and custom EMI, TVS and ESD filters.” Recorded description excerpt · October 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 46 company matches
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Radio frequency interference (rfi) filter suppliers: dataset insights
October 29, 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
46 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 46 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 29, 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 radio frequency interference (rfi) filter 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 radio frequency interference (rfi) filter suppliers did RevenueBase find based in the United States?
The saved snapshot records 46 matching company records, 484 tracked contacts and 165 verified emails. The public preview displays 23 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 29, 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 23 radio frequency interference (rfi) filter suppliers based in the United States. Snapshot: October 29, 2026. https://revenuebase.ai/companies/radio-frequency-interference-rfi-filter-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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