Ian White wrote:

I'm looking for about 1km of thin-ish solid copper wire, as cheap as
possible.

1. Solid, not stranded
2. To be used as single wires, in lengths of typically 10m
3. Could be insulated or bare, tinned or not; but not enamelled (unless
the price was very, very right)
4. Strong enough to cope with being laid on the ground outdoors, and
then generally trodden on and mowed over
5. Thin enough to be cheap.

RF groundplane: earth mat or radial system for a vertical radiator? Try
http://www.ormiston-wire.co.uk/ or G. Barmaper in Stanmore. Or get some
7-strand conduit wire (say 10 or 16 mm^2) and strip out the strands.

73
--
Andy