In article ,
IanT wrote:

No point using a "short" aerial as the radiaton angle will be up in the sky
and coverage absolutely rubbish.

Not so, at least not for the stated reason.

The radiation pattern of an "infinitesimally short" dipole (or very
short monopole over a good ground) isn't very different from that of a
half-wave dipole (or quarter-wave whip over a good ground). There's
only a dB or so of difference in the shape of the patterns, at any
angle.

The problem with short mono-/di-poles is that you need to add a whole
bunch of loading to them, in order to make them resonant and easy to
drive. The usual methods for such loading are electrically
inefficient... much of the power ends up being burned up as heat in
the coil.

It'd help to know a bit more about the intended installation/application
of this particular antenna, in additional to the described physical
parameters.

There might be some form of slot antenna which would do the trick.

--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
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