::Twisted pairs are actually pretty well self-shielding and immune to reception
and radiation of RFI. Hard to believe anyone would try to market an automotive
vehicle that won't work when parked at a mountain transmitter site that's home
to 20-30-40-50 50kW-250kW TV and FM BC transmitters, or at a field site that's
home to a 50kW AM BC transmitter. You can generally pull right up and park
next to any of those. Not to mention the numerous 1 Million Watt e.r.p. SW BC
transmitters that are found all over the country, and the world...
-WB2WIK/6
Actually, this may not be as farfetched as all that - if I remember
correctly, some late-model cars are now using ethernet for their data
communications between the computer, various sensors, and various
actuators. I have no clue as to the degree of built-in EMP protection,
particularly in vehicles with plastic body panels, or the potential effect
of RFI.
73, Pete N4ZR
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