Robert Yff, age 77, a longtime Norwalk resident, died Sunday October 19, 2008 of injuries sustained from a fall at the summer home he built on Fire Island. Born in Venezuela of Dutch parents on January 22, 1931, he was the son of the late Johannes Yff and Sophia Magdalena Korlaar Yff. Robert was the husband of Mary Margaret "Peggy"Girard Yff. He was pre-deceased by his first … [Read more...]
Radio Operators Oppose Proposed Change to Disturbance Limits of CISPR 22
Recently there has been a flurry of activity opposing the proposed change to the disturbance limits of CISPR 22. Objections focus on proposed Power Line Telecommunications (PLT) disturbance limits, which would be relaxed by 18 dB. These disturbance limits for Power Line Telecommunications (PLT) systems are defined by the standard CISPR 22 and its European equivalent EN 55022 … [Read more...]
FCC to Test for Interference Between Wi-Fi and Cellular Phone Networks
The Federal Communications Commissions’ Office of Engineering and Technology has begun running tests in Seattle, WA to determine the extent of spectrum interference between next-generation Wi-Max systems and cellular phone networks. A provision of the FCC’s slated auction of the 2155- to 2180-MHz band is that a winning bidder must set up a free wireless broadband network. … [Read more...]
South Carolina Seeks to Jam Cell Phones within Prisons
As this eNews was being prepared, a scheduled demonstration at the Lieber Correctional Institution in Ridgeville, SC was postponed because of severe weather conditions. Presumably, it will be rescheduled. The South Carolina Department of Corrections and Florida-based electronics firm CellAntenna Corporation had planned a demonstration of CellAntenna’s equipment on Tuesday, … [Read more...]
Federal Judge Dismisses Suit Alleging EM Harm from Cell Phones
A federal judge has dismissed a class action suit that alleged that cell phone service providers have conspired to hide evidence that the radio frequency emissions from cell phones pose dire biological hazards including the possibility of brain cancer. In a 46-page opinion, Senior U.S. District Judge John R. Padova of the United States District Court for the Eastern District of … [Read more...]
Turkish Study Indicates That EM Fields Harm Embryonic Rats
A study published in the medical periodical Brain Research has once again stirred up the recurrent controversy about possible ill effects from the exposure to electromagnetic fields that occurs with cell phone use. This recent study has focused attention on the advisability of cell phone use by pregnant women. The study entitled “Effects of prenatal exposure to a 900-MHz … [Read more...]
Miniature EMI Filter Arrays with ESD Diodes Target Mobile Handsets
A new family of electromagnetic interference, low-pass RC Pi filter arrays from OnChip comes with onboard diodes for electrostatic discharge (ESD) protection. These devices are crafted specifically for high-speed data LCD and memory card interfaces in mobile phones, PDAs, and MP3 players. The OC1425 is a 4-channel EMI filter while the EMF4020 and the OC1442 are 8-channel EMI … [Read more...]
Embedded FRAM-LSI Counteracts EMI in Mobile Phones and Other Applications
The MB88R157 from Fujitsu Microelectronics Limited (FML) is an addition to its existing line of spread-spectrum clock generators used to counteract EMI on high-frequency clock signals. This device includes an embedded FRAM (ferroelectric random access memory), which features fast rewriting speed and can vary its frequency output over a range of 1 MHz to 134 MHz while mounted on … [Read more...]
Test System Available in 1- or 3-Phase Versions
The MIG1206-xP-T from EMC-Partner is an integrated CWG and 10/1700-µs telecom test system. It is available in 1- or 3-phase versions for enhanced level testing of telecom and power interfaces. The unit incorporates a 12-kV/6-kA combination wave together with a 6-kV 10/700-µs impulse along with an automatic CDN for AC or DC power supply applications. Typical standards requiring … [Read more...]
Embedded FRAM-LSI Counteracts EMI in Mobile Phones and Other Applications
The MB88R157 from Fujitsu Microelectronics Limited (FML) is an addition to its existing line of spread-spectrum clock generators used to counteract EMI on high-frequency clock signals. This device includes an embedded FRAM (ferroelectric random access memory), which features fast rewriting speed and can vary its frequency output over a range of 1 MHz to 134 MHz while mounted on … [Read more...]
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