Radio suppressor type spark plug wires use compressed carbon powder as a conductor, rather than solid metal wire, to reduce radio frequency interference (RFI) produced by the wires, which may cause malfunction of sensitive electronic systems in modern vehicles.
The mountain ridges surrounding the site are supposed to provide some protection from electromagnetic noise.
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ARINC 818 lends itself to applications that require few conductors (slip rings, turrets), low weight (aerospace), EMI resistance, or long distance transmission (aerospace, ships).
The BonNova rocket team for the Lunar Lander Challenge was led by their chief engineer, Allen Newcomb, a rocket engineer with a career background of combined experience in avionics and design for extreme environments that can expose equipment to extreme heat such as oil wells, and race cars with brutal vibrations and extreme EMI
Another discredited theory, posited by literature professor Elaine Scarry, proposed that Flight 990 was subjected to electromagnetic interference by military aircraft.