Topband: Top Hat Vertical

[Ed Sawyer]

“Same here. My T vertical for 160 is 100 ft vertical and 82 ft horizontal.
That makes the antenna resonant below the band, with a feedpoint Z of 50
ohms plus some inductive reactance on 160M. I add series C to tune out the
L. The same idea will certainly work on 80M.”

 

I believe that this antenna is functioning as a 3/8 wave vertical.  Which is
nice, but not necessary for good performance.

 

I have a 70 ft high vertical portion with a total hat of about 45 ft (22.5
ft x 2).  It resonates at 1.84Mhz with 20 Ohm impedance.  It is fed against
a ground rod and 45 radials – mostly ¼ long.

 

Works quite well.

 

Ed