If the top of the antenna touches the walls or roof the performance may be affected slightly.
Install radio antenna in attic.
Unun stands for unbalanced coaxial line to unbalanced antenna.
The antenna s compact high performance design makes it easy to install and angle for the best reception to your home.
It is normally very much easier to install a radio antenna in the attic or roof space than outside.
Thus only some general guidelines can be given here rather than precise steps.
If you have some sort of attic in your home apartment or condo you re in luck.
Yes in the attic.
Since signals will be weakened by just about any roofing material utilizing a higher gain antenna is typically the first step in overcoming signal loss.
The near vertical portion of wire 20 ft from the attic shortwave antenna to the receiver could pick up vertically polarized electrostatic interference.
Install a 9 1 unun at the antenna end of the coax.
If you attic isn t tall enough you could angle the antenna mounting to make it fit.
There is no need to climb up ladders and possibly onto the roof with all the hazards for untrained people not used to climbing up ladders and handling them whilst up there.
But even if you can t put up an outdoor antenna you can still operate with antennas installed in an accessible attic space.
Make sure the floor beneath the antenna especially if you re attaching it to a base mount or mast on the floor is.
Many hams including many of you reading this are limited by hoa or other outdoor antenna restrictions.
You will need a peak in your attic that is tall enough for the antenna to fit.
Antennas generally perform best when they re out in the clear but there is no law that says you can t use an outdoor antenna indoors.
The kb9vbr 2 meter j pole antenna is 69 inches tall overall.
All radio antennas need a radio feeder to transfer the energy to and from the antenna.
The effective range of most antennas is lowered by 10 15 miles with an attic installation so you may consider getting a more powerful antenna than you would typically need with an outdoor antenna.
If you re using a ladder you should pad the floor with extra planks to ensure stability.
Ge is one of america s most trusted electronics brands and their antenna is specifically designed to be installed in an attic so it can provide fantastic reception while staying out of sight.
Lots of amateurs in these situations are doing so successfully especially on hf.
The one i recommend.
Attics are great locations for indoor antennas.
