(By Kenneth Wyatt) A recent article by Intel describes how actress, Hedy Lamarr helped invent the first frequency-hopping anti-jamming system for torpedoes. The article describes, "A lonely immigrant from Austria slips out of her stage clothes and kicks off her heels. Carefully removing her movie makeup, she’s dissatisfied that she’s been overlooked for more significant … [Read more...]
Special Webinar on Spectrum Analyzers Available
Spectrum Analyzer Fundamentals - Part I, presented by Bill Kardine, Application Engineer, of Rohde & Schwarz, is a recorded webinar that covers the architecture of a spectrum analyzer and provides a detailed description of each function, how it works, and what impact they have on the measurement results. Typical spectrum analyzer measurements such as channel power, … [Read more...]
U.S. NAVY Developing Wave Energy Conversion Device
The U.S. NAVY is researching a device that will convert wave motion to electricity to power emergency equipment in life rafts. The “Lifesaver", a ring-shaped buoy, is being tested to obtain operational data on this particular ocean renewable energy conversion technology. The buoy converts energy generated by passing waves into electrical energy. The Lifesaver project was … [Read more...]
North Korea Interferes with GPS Navigation Systems
Newsweek reported South Korean officials have accused North Korea of using radio waves to interfere with GPS navigation systems near the border between the two countries. This apparently occurred just after North Korea fired a short-range missile into the East Sea. South Korea’s Yonhap News Agency referred to this as an act of “defiance against mounting pressure to give up its … [Read more...]
Fast Radio Burst "Afterglow" Is Actually Flickering Black Hole
Harvard University reported that last February a team of astronomers reported detecting an “afterglow" from a mysterious event called a fast radio burst "which would pinpoint the precise position of the burst's origin." "New research by Harvard astronomers Peter Williams and Edo Berger shows that the radio emission believed to be an afterglow actually originated from a distant … [Read more...]
CISPR Provides Standards for SmartGrid
CISPR’s (International Special Committee on Radio Interference) primary role is standardization in the field of control of emissions above 9 kHz from devices, and as such has published various standards that cover or can be applied to SmartGrid system emission measurements and control. To ensure protection of the radio frequency spectrum, emissions must be addressed … [Read more...]
EMI Suppression Filters Available
Chilisin Electronics Corp. offers a wide range of surface mount power and signal ferrites and common mode chokes. Korean company Chilisin was established in 1972 and specializes in inductor and filter manufacturing. Their web site has several useful application notes on a wide range of fields, as well as several tools for simulating ferrite performance. To view their … [Read more...]
Handheld 3.6/6 GHz Spectrum Analyzers
AIM-TTi is offering a spectrum analysis up to 6 GHz that fits in your hand. The model PSA3605 covers 10 MHz to 3.6 GHz and the model PSA6005 covers 10 MHz to 6 GHz, and both offer resolution bandwidths from 300 Hz to 10 MHz in a 1:3:10 selection, according to the company. The units have a zero span mode and a built-in demodulation for AM and FM. Trace modes … [Read more...]
National Radio Quiet Zone – Quietest Place in the USA
(April 4, 2016, Kenneth Wyatt) With all the mobile communications we enjoy, along with the associated radio, television and cell phone transmitting towers, would you believe there is a place in the U.S. where all that is either prohibited or very closely controlled? That place is the The National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia. What originally … [Read more...]
Cell Phone Co. Works with Satellite Industry to Reduce Potential Interference
According to FierceWireless.com, "Verizon representatives who met with FCC officials on March 1 said they will be working with satellite providers to try to find common ground on potential interference issues between future mobile terrestrial operations and existing satellite earth stations in the 28 GHz band." FierceWireless.com reported that "Verizon says it supports rules … [Read more...]
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