American Radio Relay League (ARRL)

Amateur Radio Saves Family in Death Valley National Park

Our lives today are filled with new and exciting communications technologies that help us to stay in touch no matter where we are. But, sometimes, it’s legacy technologies that come to our aid in times of distress.

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Testing

Do Measurements Validate Simulations?

It is common for people doing simulations to make a measurement of a similar set up to validate the simulation. The real issue is whether the tool user understands the problem well enough to capture the important features, and whether the user understands the tool well enough to use it correctly.

U.S. Federal Communications Commission (FCC)

Consumer Broadband Label Requirement Now in Effect

The U.S. Federal Communications Commission’s (FCC’s) rules requiring broadband service providers to display consumer-friendly labels are now in effect.

Standards and Compliance

Functional Safety: Overview and Methods

Functional safety encompasses various standards and requirements for ensuring safe product operation. Functional safety evaluations are necessary whenever controls are employed to ensure safe product operation, with the process generally similar across projects despite differing nuances in standards and applications.

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Electrical Engineering Resource Center

Signal Analysis Guide

Learn about an analyzer's new features for analyzing phase noise, noise figures, pulses, and Bluetooth signals through firmware upgrades and added applications.

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Engineering News

Mark Steffka Honored with Faculty of the Year Award at 91st Annual Slide Rule Event

University of Detroit Mercy's College of Engineering and Science recently celebrated its 91st annual Slide Rule event. Mark Steffka was honored with the prestigious Faculty of the Year award for the Engineering department, a recognition of his outstanding teaching and commitment to student success.

U.S. Food and Drug Administration (FDA)

FDA Releases Reports on Medical Device Safety Initiatives

The Center for Devices and Radiological Health (CDRH) at the U.S. Food and Drug Administration (FDA) has released its latest reports on the agency’s activities in support of the safety and innovation of medical devices.

U.S. Federal Communications Commission (FCC)

FCC to Vote on Restoring Net Neutrality

The U.S. Federal Communications Commission (FCC) is expected to vote this month on a proposal to restore rules intended to provide a national standard for broadband reliability, security, and consumer protection.

U.S. Food and Drug Administration (FDA)

FDA Proposes Ban on Electrical Stimulation Devices

The U.S. Food and Drug Administration (FDA) is once again seeking to ban the use of electrical stimulation devices in treating certain mental health issues.

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Feature Articles

Battery

Thermal Runaway Energy Release as a Function of the State of Charge

Designing safe products powered by lithium-ion batteries requires an understanding of how the battery pack will behave while undergoing thermal runaway. In this work, fractional thermal runaway calorimetry is used to estimate the energy release from cells at different states of charge when undergoing a thermal runaway.

Standards and Compliance

How Manufacturers and Retailers Can Collaborate to Provide Quality Products and Conduct Effective Recalls

Manufacturers, retailers, and regulators have been working to improve product safety and make recalls more effective. This has been especially important for online retailers who have additional ways to directly contact their customers.

Medical

The Importance of ANSI C63.27 in Wireless Coexistence Testing for Connected Medical Devices

Integrating a radio into a medical device can have many benefits but also introduces new challenges in compliance. Ensuring coexistence with other radios can be critical to the essential performance of medical equipment.

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