Last Thursday evening in an uneventful vote completed in a few minutes, the United States Senate confirmed Obama nominee Julius Genachowski as Chairman of the Federal Communications Commission. Republican Commissioner Robert McDowell was confirmed for a second term, and Obama has nominated Mignon Clyburn for the remaining Democratic spot on the Commission while Meredith Atwell … [Read more...]
RF Shielded Ventilation Panels
Leader Tech has introduced a line of honeycomb ventilation panels that are engineered for both indoor and outdoor applications and provide an RF shielding effectiveness up to 125 dB for E-field and 70 dB for H-field emissions. The TechVent honeycomb panels are constructed with 0.500-inch (12.7) or .250-inch (6.35) thick aluminum honeycomb with a 0.125-inch (3.18) or 0.062-inch … [Read more...]
LANL Scientists: Radio Waves Can Move Faster Than Light
In a surprising paper presented recently at the American Astronomical Society, Los Alamos National Laboratory (LANL) fellow John Singleton and his LANL colleague Mario Perez announced the invention of a gadget dubbed the polarization synchrotron. The device combines radio waves and a rapidly spinning magnetic wave thus forcing radio waves to travel faster than the speed of … [Read more...]
Membership Drive
Readers of the eNews who receive regular updates from the IEEE PSES EMC-PSTC online forum no doubt realize that participants have paid particular attention in the last few days to concerns about sufficient membership. Also, regular visitors know that this forum is certainly not about a dry, academic exchange of information. It’s a place where some very lively intellects show no … [Read more...]
MoD Issues Standard on the Safe Use of RF Energy
The U.K. Ministry of Defence recently issued DEF STAN 05-74 Issue 3 “Guide to the Practical Safety Aspects of the Use of Radio Frequency Energy.” This defence standard provides guidance on the practical safety aspects of the use of RF energy. Guidance has been included within the Standard for those directly engaged in the design, manufacture, siting, operating, and testing of … [Read more...]
Forfeiture for Rule 15 Violation
In a week that’s brought an unusual amount of news from the FCC, the agency announced a heavily annotated NOTICE OF APPARENT LIBILITY FOR FORFEITURE. A forfeiture of $5,600 was levied against Iftron Technologies, Inc. of Longmont, CO for marketing the Stinger Pro audio/video transmitter. The FCC found that the highest frequency used by that device was 2.468 GHz, a figure in … [Read more...]
Think Tank Calls for Rethinking Spectrum Use
As new faces and new ideas move into the executive suite at the FCC, the Washington, DC-based New America Foundation has issued statements and papers bringing to the fore two longstanding and contentious issues—achieving wide broadband access by freeing spectrum for wireless connectivity and by relying on “opportunistic access” or the smart radio technologies. In “The End of … [Read more...]
Health Risks of CFLs
In the most recent issue of its It’s Your Health newsletter, Health Canada examines questions about the safety of compact fluorescent lightbulbs (CFLs). In regard to fears regarding electromagnetic fields, the agency reports that at a distance of 30 centimeters from the lamp, EM exposure is well below accepted limits. The two areas of concern are the ultra-violet light … [Read more...]
Solid Tantalum Capacitors Withstand Harsh Environment up to 200 Degrees C
The THJ 2000 SMD Series from AVX Corporation designates new solid tantalum capacitors that can deliver 1000 hours of continuous operation at 200 degrees C with derating. The capacitors are initially available in two E-size cases: the E 220 µF rated at 10 V for 3-V rail application at 200 degrees C and the E 100 µF rated at 16 V for 5-V rail application at 200 degrees C. These … [Read more...]
Spread Spectrum Oscillator Lowers EMI Output
The CSSC from Cardinal Components is a programmable spread spectrum oscillator crafted to lower the EMI output of a product significantly as compared to conventional clock generators. The first in a series, the CSSC is SMT programmable with HCMOS output. The device is pin compatible with conventional oscillators allowing for simple drop-in replacement of components. The device … [Read more...]
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