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radio frequency

FCC Investigates Amazon, Others for Marketing Wireless Signal Jammers

The FCC is reportedly investigating Amazon and a number of other online retailers and drone technology companies for their alleged sale of illegal radio frequency devices.

White Paper on 5G RF Receiver Performance Released

The widespread adoption of the 5G spectrum for advanced wireless communications ultimately depends on...

FCC Targets Unauthorized Radio Frequency Devices Once Again

The U.S. Federal Communications Commission (FCC) has cited an online health and wellness company for marketing...

SCIF and Radio Frequency Secured Facility Design, Part 2

Secure facility designs often comingle ICS/ICD-705 and NSA 94-106 performance requirements creating project confusion with significant design and cost implications. This article focuses on bringing some clarity to the differences between ICS/ICD-705 design guidance and NSA 94-106 performance requirements. The related secure facility design and construction process is also reviewed.

SCIF and Radio Frequency Secured Facility Design

Secure facility designs often comingle ICS/ICD-705 and NSA 94-106 design requirements, creating project confusion with significant design and cost implications. This article focuses on bringing some clarity to the differences between ICS/ICD-705 design guidance and NSA 94-106 performance requirements. The related secure facility design and construction process is also reviewed.
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Phone Maker Pays $100k to Resolve Charges of Excessive SAR Emissions

A mobile phone company has agreed to pay a civil penalty of $130,000 to...

Developing Wideband RF Systems That Can Withstand Electromagnetic Interference

As the electromagnetic spectrum becomes ever more crowded with signals, engineers must work to fight against interference to ensure their messages get through. That's where the WARP program comes in.

A Problem (and a Solution) with MIL-STD-461F/G CS114 Below 10 kHz

Ten years ago, MIL-STD-461F added a low frequency extension to CS114 that models common mode noise generated by dc power systems used on Navy ships.

Unintentional Source Causes Strange RF Interference

After a strange series of reports were received regarding malfunctioning key fobs and disabled cellphone use all within an isolated area, city officials in Evanston, Illinois turned to the ARRL lab for help in investigating the cause of such odd interference.

A Radio Frequency Application of Critical Damping Theory and Practice

EMC is sometimes termed the study of secondary effects that are ignored in college...
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