Gerry is quite right but I don't think its going to look a WWII whip any
more!!!!!!!
You need a quarter of a wavelength aerial as the simplest type that will
work and the formula is simple;
Speed of light divided by frequency = wavelength.
Light travels at 2.997925 by 10 to the 8 meters/sec divide by 470 by 10 to
the 6 = 0.637862 meters, divide by 4, 159.5 mm or 6.3 inches. (I'm sorry
but the em screen won't allow proper exponentials)
This will be a bit erroneous (long) owing to an effect known as fringing or
end effect, but I suspect most of the "antenna" is in the height of the
huge WWII style base so you may only end up with a 2 inch prong -
definitely not a WWII looking antenna!
It is possible to match a long whip on this UHF frequency but it gets
seriously technical and would be horribly inefficient; with such a short
antenna length required maybe its better to hide or disguise it somehow
perhaps.
All the best for 1997
Richard (G3ZOE)
(Southampton UK)