[TowerTalk] small antennas

Joe Subich, W4TV w4tv at subich.com
Fri Aug 18 20:40:01 EDT 2006

W4ZW writes: 

> But to my ear and use for three years now I can hardly tell 
> much difference between them except on 10M where the A4S has 
> four elements. 

Jon ... to correct the record the A4S is a three element yagi 
on 10 meters.  The trapped reflector is active on 20/15 and 
the single reflector is active on 10 meters.  

With the A4, the longer boom provides higher gain and wider 
bandwidth on 15/20 but performance would fall off on 10 so a 
separate reflector was used to provide a better match and 
improved F/R on 10. 


   ... Joe, W4TV 

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