[Hallicrafters] Antenna question

[hwhall at compuserve.com]

An antenna like that is effectively a huge loading coil, so the number, diameter and spacing of the turns affects the resonant frequency. The effect of the continuous loading all along its length is to reduce the resonant frequency when compared to a straight wire in the same space. So it sort of does allow one to squeeze a big antenna into smaller spaces between objects. 
 

 Wayne
WB4OGM



-----Original Message-----
From: Waldo Magnuson <magnuson at mac.com>
To: hallicrafters <hallicrafters at mailman.qth.net>
Sent: Sun, Sep 29, 2013 9:18 pm
Subject: [Hallicrafters] Antenna question

 
 
 
Hi,  yesterday at the Spokane, WA Hamfest an antenna was strung up outside with  
a co-ax leading inside.  The question is on the antenna characteristics.  It was  
a dipole (maybe 50 feet end to end) but the wire was like a large coil.  The  
coil was about 6 inches in diameter and a loop about every 6 inches.  It was  
supported by a nylon line so could have been stretched out maybe to 100 feet or  
so.  Is the coil loops just for putting up the antenna between different  
distance objects or is there some electrical effect for the loops? Thanks. 
73, Skip W7WGM 
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