[Hallicrafters] Piesoelectric effect case in point.

[Troglodite at aol.com]

In a message dated 1/3/2011 12:45:31 P.M. Central Standard Time,  
ranickel at comcast.net writes:

So it  may not be long before a hiker or cyclist can capture enough free 
energy  through his exertions to make a few QSOs!



Bob,
 
I made an attempt to do that some years ago with one of the old generators  
that used to run the lights on a bicycle. Strictly QRP. The generator 
output is  AC, which had to be rectified, filtered and regulated. It was supposed 
to run a  small CW transmitter and receiver. What I should have done was 
just use it to  keep the charge on a battery, as keeping a bicycle going at a 
relatively  constant speed and tapping out Morse with one thumb turned out 
to be quite an  exercise - literally.
 
I do have an experimental Geiger counter that runs from a barbeque grill  
lighter. That is sort of "free" energy, but again takes a bit of thumb work.  
Never needs batteries. :-)
 
Doug Moore kb9tmy