Topband: First Top Band Antenna

[John Cowan]

Since my last post I have been studying "Low Band DXing" Third Edition.  In Fig 9-95 it shows an inverted L using a 19 meter vertical tower which is pretty much what I have.  68' tower or 20.7 Meters high. 
If the loading wire is attached to the tower. Then I assume that the center wire of the coax is attached to the bottom of the tower and the braid attached to the radial system. 
My question is with the tower setting on a base plate and the base plate bolted to the concrete base is not the tower effectively grounded as well? 

 		
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