[TowerTalk] Fwd: Grounding of tower

[Jim Brown]

On 5/10/2013 6:34 AM, Jim Lux wrote:
> So if you're driving 30 rods as part of your antenna farm,

But we do NOT want a connection to earth as part of TX antenna systems 
-- the earth is quite lossy, so RF current flowing in the earth WASTES 
transmitter power.  The function of a radial system is to SHIELD the EM 
field produced by the antenna from the lossy earth, so that return 
current flows in low resistance WIRE rather than the lossy earth.

We need an earth connection for lightning safety -- the only "antenna 
farm" use for an earth connection is for RX antennas like Beverages, 
which USE the lossy character of the earth.

73, Jim K9YC