The Norman Carreck article in Bee World which I referred to in my amplification of Jerry Bromenshenk's comments on radar, should be dated 1999 not 1993. -- -- Prof. Joe Riley, M.A., D.Phil., FIEE, C.Eng. NRI Radar Unit, University of Greenwich, Malvern, UK Tel: +44-(0)1684-582193 Fax: +44-(0)1684-582984 [log in to unmask] / [log in to unmask]