For those, have disected (you have to when these trashed, unless have
trailer, after lightning hit them!) These are actually 1/2 wave length
sections (NOT USEING VELOCITY FACTOR!) , at least in the "Green Hornet"
versions, Alternating with the inside to outside(shield), and
outside(shield), to inside , all the way to the top of the antenna, EXCEPT,
the TOP 1/4 wave stinger, which is attached to BOTH THE SHIELD, and CENTER
of the Last section of coax in this antenna. The base (shield of coax) is
counterpoised to 1/4 wavelength radials, and a matching 1/4 wave piece of
coax (value unknown), is attached to bottom connector of antenna.
In other words, forget the velocity factor, EXCEPT for the 1/4 wave matching
section !! and, the after effects of a lightning strike are CATASTROPHIC,
as the Beeswax, that held this mess, inside the fiberglass tube has
literally evaporated . one other thing, when these go bad, measure for a
DEAD SHORT . got it?? , well, now wait for the wind to blow -- or take it
down and flex it . if it goes to "OPEN circuit, it is BAD!! Been there,
done that (in 80 mph winds, at better than 100 feet up in air, no thasnks
any more)!! Jim NN7K

"Dave VanHorn" wrote in message
...

wrote in message
...
Since the VF is 66% (or whatever the coax you use is) what
good (?)
effect would tophats have at the end of each section in an
effort
to make them resonant?

it would make the antenna a whole lot larger, that's for sure.