[BC] Class "D" AM Towers

[RichardBJohnson at comcast.net]

For many years the 5/8 lambda tower was called the "anti-fade" tower. When did they change the physics?

Cheers,
Richard B. Johnson
Book: http://www.AbominableFirebug.com/

----- Original Message -----
From: "PeterH" <peterh5322 at rattlebrain.com>

On Feb 15, 2010, at 7:58 PM, Steve Lewis wrote:

> Do both of these receive the benefit of the 5/8's wave lower angle of
> radiation?

On the contrary. A radiator this tall has very high high-angle  
radiation, a fact which was not known until the mid-1930s.

Any taller than 195 degrees and the station will suffer close-in  
fading, as a function of both frequency and power.