Television Antennas: Design, Construction, Installation, and Trouble-shooting Guide1949 - Television - 166 pages |
Contents
CHAPTER | 15 |
Sight Factors Reflections of Radiated Energy Reception | 48 |
ANTENNA CONSTRUCTION | 58 |
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300 ohm transmission aluminum amplifiers anchor angle antenna system array with reflectors attenuation bakelite band folded dipole bandwidth bolts building channel characteristic impedance chimney coaxial cable conductor connected Corp designed dipole and reflector dipole antenna dipole with reflector dipole-reflector direct signal drill driven element element spacing feet flange frequency response front-to-back ghost image ghost signal guy wires high band folded hole impedance matching inch Indoor Dipole insulators length lightning arrestor located low band folded matching transformer megacycles mismatch mounting base mounting bracket N. Y. Model necessary ohm transmission line output impedance parasitic element picture pipe placed quarter wavelength ratio receiving antenna reception reflected signal response pattern Screw Anchor serviceman shown in Figure Simple dipole Stack folded dipoles standing wave ratio standing waves steel Suburban Television Company supporting arm T-matched dipole television bands television receiver tenna terminal transmitter tubing type of antenna viewing screen voltage wall wood