keith armstrong

Major news outlets in the Philadelphia metropolitan area report that the head of the city’s Fraternal Order of Police (FOP) has called on city officials to replace the two-and-a-half year old Motorola police radio system because of repeated communications failures.

The rear-screen heater in my BMW 3-Series causes so much interference when switched on that it’s impossible to listen to the car radio.

Chris van Rossman of Corvallis Oregon turned on his do-everything combo TV and got a big surprise—the police, the Civil Air Patrol, and the County Search and Rescue Officers knocked on his door.

We are all aware of TVs and radios being affected by vacuum cleaners, food mixers, mobile phones, and the like...

A number of people who had been enjoying weightless activities in the non-spinning central hub of Virgin Space Ltd’s newest hotel “Arthur C Clarke III” found themselves trapped on the ‘ceiling’ for 15 minutes...

Typically, regular voltage quality spot checks are made throughout a local distribution system with additional measurements taken when a customer asks; is there a voltage problem?

302.  Early colour TV interference from early police radio handset, warns criminals About the time...

In Part 2 of this two-part article, we’ll discuss the development and use of isolated bonding networks (IBNs).

We are proud to carry on the tradition of sharing Banana Skins for the purpose of promoting education for EMI/EMC engineers.

In Part 1 of this two-part article, we’ll discuss the development of “grounding networks” and the shift to meshed structures to reduce damage from overvoltages. Part 2 will appear in our November 2020 issue.