The aerial array described comprises four u.h.f. ruggedized log-periodic aerials and is suitable for vertically-polarized reception at some r.b.l. sites. The u.h.f. Bands IV and V are covered by two versions, differing in dimensions only.nThe impedance match to 50Ω and the horizontal radiation pattern sidelobe level meet the specification. The average effective gain, taking into account the losses associated with the distribution transformer and interconnecting leads is about 12-5 dB.
展开▼
