Another thing you can do is build a folded dipole on 160. The Z for one of
these would be 300 Ohms in free space but near the ground the Z drops
significantly. A Friend of mine built one over a quarry near his back yard,
and fed it with the usual balun and coax. He got a very good match on 160
and used it for years like that. If I remember correctly, the quarry was
about 7 metres deep and he used 3 metre poles at each end to support the
ends of the antenna. To get a good match he simply raised or lowered the
antenna until he got it right.
72 de G8BOU/VE3CHH
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