[South Florida DX Association] A great blog/Video that demonstrates the way Yagi's focus radio waves

[Bill]

 From Tony N2MFT
<http://www.W4FDX.com/>
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This is a great blog/Video that demonstrates the way Yagi's focus radio 
waves.

I cannot wait to do this live for a class. 

*********From the blog...
Using a low power amateur radio transmitter and a simple light bulb 
receiver circuit, we see how radio waves and electromagnetic induction 
transmit energy and signals wirelessly through the air.

We also see how dipole and Yagi antennas radiate their energy in 
different patterns. Read on to build your own dipole receiving antenna!

http://blog.makezine.com/archive/2010/02/seeing_radio_waves_with_a_light_bul.html