Just for the heck of it, I constructed one of these from 1 inch copper,
under 12 inches for the 10 meter band, operation at 100 watts. It is on a
20 ft mast and does well for its size--does it rival a 1/2 full physical
length? No. frown
But, a less than 16 ft vertical omni on 160 meters is an interesting
antenna--and one which could almost replace your coffee table book as a
conversation piece... grin

Regards,
John

"John Smith" wrote in message
...
... it is cheaper to constuct, and even an apartment dweller would have a
back yard it would fit in!
http://www.antennex.com/preview/monopole.htm
Regards,
John