Introduction Missile platforms operate in some of the most extreme electromagnetic (EM) environments encountered by aerospace systems. The combination of high‑power radar, directed‑energy weapons, lightning, electromagnetic pulse (EMP), and electro‑static discharge (ESD) creates a complex threat landscape that can compromise functionality, safety, and survivability. Emphasis … [Read more...]
What’s New in MIL-STD-461H
The long-awaited revision to MIL-STD-461H was released on April 17, 2026. This revision formally supersedes MIL-STD-461G, issued on December 11, 2015. However, anyone involved in the MIL-STD-461 compliance arena understands that adoption through the procurement cycle will take time. There is no reason to discard those copies of revisions A through G anytime soon. Although I … [Read more...]
Can CubeSat ESD Testing with Sound Packaging Engineering Protocols Before Launch Ensure Successful Deployment? — Part 2
Read Part 1 of this CubeSats series here In 2016 and 2018, Bob Vermillion gave a series of groundbreaking presentations on “CubeSats Require ESD Handling Protocols for Launch & Space Survivability” to enthusiastic audiences of university graduate students, aerospace engineers, NASA civil servants and academic researchers at the NASA-Auburn Academy of Aerospace … [Read more...]
MERSEN Launches Critical Power Panelboard (CPP)
Protect your critical power systems with Mersen’s Critical Power Panel series panelboard. NEWBURYPORT, MA (February 2, 2026) – Mersen, a global expert in electrical protection and control for electrical power systems is excited to announce the latest in its portfolio of fully customizable fused panelboards. Mersen’s Critical Power Panel (CPP) series … [Read more...]
An Overview of Coax Limiters for use in HF Systems
OVERVIEW Critical communication and instrumentation lines subjected to very high energy RF pulses require RF limiters with exceptionally high pulse power capability. A discussion of a typical high frequency (HF) commercial off the shelf (COTS) limiter manufactured and tested by NexTek is presented to provide insight and understanding of … [Read more...]
Mersen Announces Expansion to Surge-Trap® STXH 75kA Series
Mersen Announces Expansion to Surge-Trap® STXH Series Latest addition to the Surge-Trap Residential Protection Product Offering NEWBURYPORT, MA (December 1, 2025) — Global electrical power and advanced materials leader Mersen is pleased to announce the expansion of its STXH Series of Surge Protective Devices (SPDs). Mersen’s leading SPD for residential … [Read more...]
How to Not Die in an EMC Lab
There are risks in every work environment: risks to humans, risks to equipment, risks to things you might be testing, and risks to customers’ equipment. Such is the case in an EMC lab, which is typically an ever-changing environment with moving parts, equipment, people, and projects. From day to day, EMI personnel can be working on military equipment worth millions of … [Read more...]
EMC Immunity Testing: Do You Know Your Failures?
Electromagnetic compatibility (EMC) is the desired condition for electronic devices. In an ideal world, radio-frequency emissions and transient events would not cause failures or disruptions to electronic equipment. But as much as we (and the product manufacturers) wish otherwise, we are not in an ideal world. Radiated emissions, whether intentional from transmitters or … [Read more...]
Drag Races, a Cashless Society, and the Threat of EMP
About a month ago, my 12-year-old son and I made his first-ever trip to the NHRA Drag Races near our home. It’s something that I always did with my dad, and I have looked forward to taking him ever since he was born. It’s a typical father-and-son day, wrought with loud, fast cars, terrible food, and the occasional waft of nitromethane fuel in the air. The drive is about … [Read more...]
Space Weather – Predicting EMC Effects of Solar Storms
When we think about weather, we know what it is. We feel it, worry about it, and talk about the heat, the moisture, the wind. Weather is dynamic, though mostly predictable because we can measure its conditions. We also know that the atmosphere involves large scale electrical activity. Cloud masses move above and below each other, generating enormous static-electricity … [Read more...]
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