Subj : Antenna
To   : Mike Ross
From : James Bradley
Date : Sun Jul 24 2005 01:18 am

MIKE ROSS wrote to TOM WALKER, "Re: Antenna" on 07-05-05 22:44

 MR> "TOM WALKER" bravely wrote to "MIKE ROSS" (05 Jul 05  06:55:00)
 MR>  --- on the heady topic of "Re: Antenna"

 MR>Tom, *all* unbalanced antennas require a ground to work properly.

 TW> They why do Battery Radios work so well?

 MR> High sensitivity superheterodyne cicuitry and there is always a path
 MR> to ground though it is high impedance. If you ground it good the band
 MR> just lights up! The only radios that work at the best they can are
 MR> those with a balanced antenna because the ground is is not needed.

Correct me if I'm wrong, but doesn't a balanced design have a
 'virtual ground' roughly between the points that the wires diverge? 

 MR> Think about it a minute, the unbalanced antenna picks up the energy
 MR> wavefront and now needs to dispose of the emf. Now ask yourself the
 MR> question what is the reference for this source of potential, is it the
 MR> radio or is it the Earth? Experiment with a galena or crystal radio
 MR> and see for yourself:
 -> no ground = barely audible signal, good ground = loud signal

 MR>  M*i*k*e

 MR> ... What are you looking at?  The message is OVER!!!!
 MR> --- Blue Wave/DOS v2.30
 MR>  * Origin: Juxtaposition BBS, Telnet:juxtaposition.dynip.com (1:167/133)

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