radio reception at bends in underground tunnel

Subject: radio reception at bends in underground tunnel

Date: Sun Mar 26 15:31:18 2006
Posted by roland
Grade level: nonaligned School: No school entered.
City: london State/Province: No state entered. Country: england
Area of science: Physics
ID: 1143412278.Ph

Message:


Hi
I regularly drive through a tunnel under the Thames (The Blackwall Tunnel) 
durring which the radio on FM turns to static as I would expect. This tunnel 
has several bends of 20 to 30 degrees where the radio signal returns. I would 
assume this is the effect of some sort of amplification of the signal at these 
points. Could this be used in arial or antenna design?

Re: radio reception at bends in underground tunnel

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