[time-nuts] frying pan antenna
jimlux at earthlink.net
Tue Mar 16 12:59:32 UTC 2010
Bob Camp wrote:
> I certainly won't disagree with the data. I have noticed over the years that past a few MHz antennas out in the fresh air always seem to work better than indoor antennas. It could easily be that there is a *lot* of water in your typical roof. Certainly the water is far from pure, so it's going to be pretty low conductivity.
there's also an amazing amount of metal and other junk in the usual
composition roof construction. Nails to hold the shingles on, for instance.
But I think the major absorption will be the moisture in the wood sheathing.
By this logic, a thatch roof in a dry climate is the best thing going.
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