Topband: Top hat vertical

[Jim Brown]

On Mon,6/29/2015 10:30 AM, Tim Shoppa wrote:
> I have had excellent success modeling "Marconi T" verticals with EZNEC. The
> Demo version can do a Marconi T just fine.

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.

Remember that any vertical needs an effective radial system or 
counterpoise to prevent excessive losses in the earth.

73, Jim K9YC