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Author Topic: Carbon Fiber  (Read 521 times)
AC2RC
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« on: March 23, 2010, 07:09:00 AM »

Just read about the use of more carbon fiber in cars. Will a carbon fiber roof provide proper ground plain for 2m ?
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WX7G
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« Reply #1 on: March 23, 2010, 09:55:43 AM »

No it will not.
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K0BG
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« Reply #2 on: March 23, 2010, 02:29:18 PM »

Dave gave you the short answer, but the long answer is maybe. However, it depends on which chunk of carbon fiber.

In our country, transportation hardware is exempt from part 15, albeit the FCC recommends automotive companies comply with the rule as closely as they can. Most do, some don't. The Toyota Prius is an example of the latter.

In Europe, incidental RF radiation must meet somewhat stricter rules. This requires the use of a wire mesh sandwiched in the hood of some vehicles. I would suspect they offer at least a mediocre ground plane at VHF, and above.

Perhaps more of a worry is the extensive use of aluminum. Mounting ballmounts in the side a vehicles is bad enough with today's thin sheet metal, and nearly impossible with aluminum.
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