Topband: 1.5:1 Bandwidth of shunt fed towers.

[Joe Subich, W8IK]

> The arm is 43" long and the 47' top loaded tower is tapped 26' from the
> base. There is a 1,000 pF cap in series with the feed line. To tune the
> capacative reactance, DeMaw used a top loading wire. I can attest to you
> that a coil at the base is a much easier way to tune the antenna!

Actually, DeMaw used a top loading wire to "tune the tower to 1/4 wave."  
By making the radiator appear to be 90 degrees electrically, he assured 
maximum bandwidth. 

73,  Joe W8IK


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