"David Harper" wrote in message
m...
I was wondering what the general relationship between frequency and
its ability to transmit through various materials? For instance, 1GHz
and 1MHz obviously transmit differently through materials. I'm
curious as to what material properties are involved (i.e. dielectric
constant, density, etc?)

The main reason for this questions is I'm wondering how well 1+ GHz
(GPS) signals transmit through about 1.5 inches of expanded
polystyrene (styrofoam).

Thanks in advance for any insight!
Dave

Dave

How much of *what you want to know* could be learned from a test in the
microwave??

As you probably know, it will be very difficult to include enough
Polystyrene around a GPS receiver (and its antenna) to effect the accuracy
of its readings.
I get pretty good accuracy from my DeLorme GPS while it is inside my
house. That is actually a statement about the poor construction of the
house, I suppose.

Jerry