Ham Radio Attic Antenna Installation

Unun stands for unbalanced coaxial line to unbalanced antenna.

Ham radio attic antenna installation.

Remote rf switch control box in the shack chooses which antenna is operational in the attic. Hide stuff in the closet one of the challenges you may encounter is getting the coaxial cable up into the attic. For anyone who does not like heights this is a great advantage. Again stay away from metal and wires to maintain your pattern.

It is normally very much easier to install a radio antenna in the attic or roof space than outside. Install a 9 1 unun at the antenna end of the coax. 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. On vhf a beam antenna can work well in the attic even a rotator can be used.

All radio antennas need a radio feeder to transfer the energy to and from the antenna. In order to really test it i decided to skip the step of a temporary outdoor deployment and just go ahead and put it in to it s final location. You should then make the coax shield connect properly to the pl 259 connectors at each end. On hf wire beams can be run on the roof supports or the rafters these usually are good for one direction only but can be switched electrically for different coverage.

Once all the yagis were bolted in place on the mast i used my antenna analyzer to adjust their driven elements to provide the best match in the weak signal portions of each band. Installation of a wire antenna in my small attic as previously mentioned i ve recently built my first wire antenna. Coaxial cable or coax os the. If the top of the antenna touches the walls or roof the performance may be affected slightly.

The coax shield would then be properly terminated at both ends and stop being a rogue antenna. You will need a peak in your attic that is tall enough for the antenna to fit. In the attic the antenna is not visible it is not exposed to weather and it can be installed without climbing onto your roof.