A worst case -- "real world" -- is probably just behind a radio equipped car, mounting a capacitively top-loaded antenna at its rear edge, and about 600 watts of RF.
With rather less power, 100 watts, I've occasionally seen adjacent cars' engines stop when I transmit. It would be interesting to see if RF at these levels got into electric cars' motor controllers. Cortland - KA5S (What I write here is mine alone. My employer does not Concur, agree or else endorse These words, their mood, or thought.) Ken Javor wrote: > ... > > For the case in point, an automobile, I assume the longest cable 5 meters. > Five meters is a half wavelength at 30 MHz. Personally I am not aware of > any requirements in the automotive world above 200 V/m, but I may be wrong > on that as I haven't done any automotive consulting in at least five years. > Based on 200 V/m, the bulk current injection limit would be 300 mA or 110 > dBuA above 30 MHz, decreasing 20 dB per decade with decreasing frequency > below 30 MHz. This is very much a worst case coupling assumption, since 1.5 > mA per Volt per meter depends on plane wave illumination of a cable 5 cm > above ground with the magnetic component of the field penetrating the loop > formed by the cable above ground at right angles over the entire length of > the cable run. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
