[BC] Smallest AM Radiator

[PeterH5322]

>... I could throw up a 60' tower, with a 3 wire unipole ...

Why not a common utility pole?

I believe these come in sixty feet.

See ...

"Utility poles are divided into ten classes, from 1 to 10. The classes' 
definition specifies a minimum circumference that depends on the species 
of tree and the length of the pole. This circumference is measured 6 feet 
from the butt of the pole. There is also a minimum top circumference that 
is the same for all species and lengths.

"For example, a class 1 pole has a minimum top circumference of 27 
inches. If it is 25 feet long and cedar (most utility poles are cedar), 
the circumference measured 6 feet from the bottom must be at least 43.5 
inches.

"The higher the class number, the skinnier the pole. Pole lengths start 
at 16 feet and increase by 2-foot steps to 22 feet, then by fives from 25 
feet to 90 feet. A 90-foot class 1 western red cedar pole weighs about 
6,600 pounds. A 16-foot pole weighs only about 700."

... so it would seem you could even obtain a ninety foot pole.

With the appropriate protective coating, possibly slate color instead or 
ordinary black, you could have a relatively inexpensive support 
structure, and you might be able to get your local utility pole erection 
company to install it for you.

I am reminded when KNX lost its 1930s tower due to an act of vandalism in 
the 1960s, it erected a number of utility poles, and installed a 
temporary T antenna from same. Operated at 10 kW until a replacement 195 
degree tower, and a 135 degree auxiliary tower could be installed.

Now, a 90 feet utility pole would be approximately 35 degrees on 1070, 
and although that could never obtain 362.10 mV/m/kW at 1 km, the minimum 
or its class, it might have obtained somewhere around 240, which is the 
minimum for your class.