keith armstrong

During the testing of one aircraft, we suffered a very marked and complete electrical failure of the aircraft (much to the alarm of both the test engineers and the cockpit crew) which turned out to be due to the EUT we were testing.

Part 1 of this two-part article explores some basic rules for terminating cable shields. Part 2 of the article will appear in our October 2022 issue and will summarize the results of recent testing conducted by the author on the shielding effectiveness of screened cables up to 2.8 GHz

Because of their mobility, vehicles will be placed in many different kinds of Electromagnetic environments.

Search and rescue transmitter interferes with car alarms, central locking, and garage door openers in Las Vegas.

Walkie-talkies interfere with electronic door locks on aircraft cockpits.

Navigation and control instruments can be caused to malfunction. During the approach of an Alitalia aircraft at Turin airport on 31 December, 1995, one of the 160 passengers onboard switched on his mobile phone, thus blocking the plane’s autopilot system.

Is it safe to use cellphones on airplanes? The real question should be: “Is it safe for passengers to use any electronic equipment on airplanes?”

Operating my personal document shredder crashes my digital TV set-top box, although it is 5 metres away. Toggling the on/off button on the set-top box restores normal operation. 

In the kitchen we have a radio/tape/cd and recently the tapes have been playing with very poor sound quality.

Cellular telephones can interfere with medical equipment – Mayo Clinic concludes