Recent developments on v.h.f. ground-communication aerials for short distances

Recent developments of very-high-frequency aerials have been principally in the direction of improved bandwidth. In the field of ground-to-air communication in the frequency band 100¿156 Mc/s, a simple wide-band dipole covering the whole band without adjustment is described. A directional aerial embodying a corner reflector for operation between 100 and 125 Mc/s has been designed for use in the event of jamming. The frequency band 65¿95 Mc/s has been used for short-distance point-to-point communication. A rhombic aerial for use between 65 and 85 Mc/s requiring no adjustment, and a Yagi aerial for the whole band requiring little adjustment, are described.