Measurement of reradiation from lattice masts at v.h.f.

The reradiation coefficient of a lattice mast more than a small fraction of a wavelength wide cannot be calculated theoretically without making assumptions which may not be entirely valid. Reradiation coefficients of lattice masts have therefore been measured with models, for both vertical and horizontal polarisation and the full range of mast sizes likely to be encountered at v.h.f. The experimental method is described, and the results compared with reradiation coefficients derived by approximate theoretical methods.