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The side-fire helical antenna, successfully used for UHF and VHF high channel television transmission, has now been adapted for low channel VHF service. Investigation of properties of a helical radiator wound around a polygonal supporting structure has made possible the required increased bandwidth and provided directional patterns for special TV coverage applications. Through scale model work, a channel 2 directional antenna has been developed for installation around a triangular tower section.
Broadcast Transmission Systems, IRE Transactions on (Volume:PGBTS-11 , Issue: 1 )
Date of Publication: Sept. 1958