TopBand: radial question

[gregsmi@dbn-pop.iafrica.com]

Can one of you guys who has access to the NEC wires program help me 
with a radial question?

Does a "radial" need to be in the radial direction in order to 
collect current, or does it still collect on any portion which may be 
in the tangential direction?

The reason that I ask is that my tower is very close to the house, 
and, although I have some radials on the roof, they are only 10-15m 
long.  On the other side of the house is the driveway and then the 
boundary.  I could have one or two radials running along the drive on 
either side, but don't want to grind any more slots in it than I have 
to.

Suggest the following simulation.  Set up a vertical with say 4 X 15m 
radials and calculate the current in them.  Then add a 20m Tee 
section on to the end of each and recalculate.

Would appreciate someone running this for me.

Thanks.
Greg, ZS5K.

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