Jean-Louis is right,
Is seems that even Heinrich Hertz's original experiment demonstrating the
existance of radio waves in 1887 was probably achieved at VHF frequencies -
judging by the dimensions of the TX Antenna and RX loop with the spark-gap
in it.
http://en.wikipedia.org/wiki/Image:Hertz_schematic0.PNG
73
Hugh M0WYE
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Wednesday, June 28, 2006 3:35 PM
Subject: LF: Off topic on this list :o)
Hi all
For your information, spark gaps were not only used for LF in the past
...
Jagadis Chandra Bose was experimenting on 60 GHz with spark gaps around
1897.
See: <http://www.tuc.nrao.edu/~demerson/bose/bose.html>
http://www.tuc.nrao.edu/~demerson/bose/bose.html
73 de Jean-Louis F6AGR
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