High-Performance RF Power Line Filters at 250 Amp Now Available to Meet MIL-STD-188-125-1A

Ratings of 10 Amp to 250 Amp Certified by Independent Test Lab


CEDAR PARK, Texas – August 23, 2022 – ETS-Lindgren announced immediate availability of Model LRX-EMP RF Power Line Filters in the ranges of 10, 30, 60, 100, and 250 Amp that comply with MIL-STD-188-125-1A.  The filter series meets or exceeds the residual requirements and other norms of MIL-STD-188-125-1A, released by the Defense Threat Reduction Agency (DTRA) in July 2021, superseding MIL-STD-188-125-1, released in 1998.  The MIL-STD-188-125-1A standard specifies test methods as well as updates passing criteria for Points-of-Entry (POE), such as filters, to secure environments including SCIF and TEMPEST shielded enclosures.  The new edition of MIL-STD-188-125-1A raises the quality standard for RF power line filter installations.  POE for power are often overlooked but are integral to maintaining the overall security of any environment on which RF power line filters are installed.  Model LRX-EMP RF power line filters also meet the requirements of the superseded standard MIL-STD-188-125-1.  Thus, they are backward compatible with the -1 requirements.


To document compliance with MIL-STD-188-125-1A and -1, Model LRX-EMP RF Power Line Filters were independently tested at Little Mountain Test Facility operated by Boeing at Hill Air Force Base in Ogden, Utah (test report available on request).  Model LRX-EMP RF Power Line Filters also comply with industry standards such as UL 1283, MIL-STD-220, MIL-F-15733, and IEC 60939 to ensure high-quality performance and safe operation. 


“We released this series of Model LRX-EMP RF Power Line Filters compliant with MIL-STD-188-125-1A last month with ratings from 10 Amp to 100 Amp.  Due to popular demand, we’ve added the 250 Amp-rated filters, and our next step is to provide a wider range of Model LRX-EMP 400, 600, and 800 Amp-rated filters.  These will be submitted to Little Mountain Test Facility for independent testing in the near future,” said Sergio Longoria, Product Line Technical Manager, RF Filters.  “As a long-time technical contributor to the commercial and defense standards committees addressing RF power line filter applications and performance, we anticipated the POE changes specified by DTRA and were ready to support our customers.”


ETS-Lindgren’s RF Filter product line includes Electromagnetic Pulse (EMP) Commercial and Defense Tempest Powerline Filters featuring the popular Model LRX with EMP protection.  LRX filters are designed to meet point-of-entry requirements of MIL-STD-188-125-1, -1A, and -2 for short and intermediate pulses while providing high-insertion loss performance for SCIF, TEMPEST, and other military and commercial applications.  The RF Filter product line also includes ETS-Lindgren’s High-Altitude Electromagnetic Pulse (HEMP)/EMP Commercial and Defense Non-Tempest Powerline Filters with Red Edge™ Technology to protect against damage to electronic equipment and loss of data caused by a sudden and intense EMP and intentional electromagnetic interference (IEMI).  These filters provide excellent multi-stage, over-voltage, electromagnetic interference (EMI), and radio frequency interference (RFI) protection. 


In addition to Power, Signal (Sensor), Data, and Control-Line Filters, ETS-Lindgren provides custom, made-to-order RF and EMP Filters to meet specific requirements, such as configuration, performance, and power level.   


Did you know ETS-Lindgren is the only manufacturer to have its complete Red Edge Filter product line acceptance-tested to the requirements of MIL-STD-188-125 by the independent Little Mountain Test Facility operated by Boeing at Hill Air Force Base, in Ogden, Utah?  ETS-Lindgren documents the performance of its products and provides continuous customer support through its team of 750+ employees and six manufacturing sites worldwide.  For decades, customers have relied on ETS-Lindgren’s expertise gained by more than 50,000 global RF shielded installations.  For more information, view ETS-Lindgren’s Top 10 Considerations for RF and Facility Power Line Filters, call +1 512-531-6400, or email info@ets-lindgren.com.


About ETS-Lindgren


ETS-Lindgren is an international manufacturer of systems and components that measure, shield, and control electromagnetic and acoustic energy.  The company’s products are used for electromagnetic compatibility (EMC), microwave and wireless testing, electromagnetic field (EMF) measurement, radio frequency (RF) personal safety monitoring, magnetic resonance imaging (MRI), and control of acoustic environments.


Headquartered in Cedar Park, Texas, ETS-Lindgren has manufacturing facilities in North America, Europe, and Asia.  The company is a wholly owned subsidiary of ESCO Technologies, a leading supplier of engineered products for growing industrial and commercial markets.  ESCO is a New York Stock Exchange listed company (symbol ESE) with headquarters in St. Louis, Missouri.  Additional information about ETS-Lindgren is available at www.ets-lindgren.comFollow ETS-Lindgren on Facebook, LinkedIn, Twitter, and YouTubeAdditional information about ESCO and its subsidiaries is available at www.escotechnologies.com.


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Janet O'Neil
Marketing Communications
Office:  +1 (512) 531-2676

Cell: +1 (425) 443-8106