Attic Antenna Balun Construction

1 response to hidden attic dipole antenna installation.

Attic antenna balun construction.

Like the attic dipole. The attic shortwave antenna wire this is the most importantaspect to improve. Such a balun intelligently used can go a long way to eliminating common mode currents in coax. Bare copper antenna wire stapled directly on wood rafters causes loss of rf signal energy.

So need to get licensed. Interactions with nearby objects electrical wiring plumbing ductwork and other construction materials may adversely interact with an attic antenna. Follow the instructions that come with the balun. Reduced bandwidth if a shortened length antenna is chosen to accommodate the space limitations of an attic installation it can reduce the swr bandwidth.

Dipole antenna balun center. Attach a balun to the 2 center sections of wire. Baluns for antennas purpose isolate transmission line from antenna suppresses inverted l mode provide balanced output currents into unequal dipole leg impedances misconceptions will affect antenna bandwidth inefficient prone to core saturation provides lightening protection. The dipole antenna i installed was cut roughly for 20m 14mhz but the final tuning has not yet been performed allowing for optimization for the in situ configuration.

Made from sturdy materials including solid aluminum and a waterproof dipole box this antenna is designed to resist the elements even in a non weatherproofed attic so it can continue to provide your household with free access to tv channels for a long time. Mounting an antenna in your attic is easier to accomplish than putting it outdoors mainly due to not having to drill holes in your roof as well as a shorter cable run to the tv. An attic antenna is more economical than a rooftop installation to maintain and doesn t entail as many potential repair costs as its outdoor counterpart. Common mode currents are a major source of noise in coax fed attic dip0les or balanced line fed attic dipoles where the balanced line is handled carelessly.