So on the house plans of a new build, we put a suggested location where we wanted the TV aerial located so it would be a the back of the buidling. That would obviously be subject to there being a signal in that location, and we expected that the electrican would check to make sure it is suitable. The electrician did install a wire into this location after we confirmed with them  that is were we preferred it to go. However when they came to install the aerial, they said that there wasn't a strong enough signal. They said the only option looked to be moving the aerial to the front entrance of the building which would be the first thing you see when you see the building.The suggested location is in clear sight to the transmitter, so no building blocking it, but they say that there must be trees in the distance or around it blocking the signal. I was wondering if using another aerial may help.

The current aerial that was tried was a Triple folding Structure one as shown at http://www.freeviewshop.co.nz/information/technical/aerial-guide-i-49.html which is supposed to be for fringe areas , which gives 40% strength. they say they need at least 60%.  If they move the aerial closer to the front of the building they can get enough strength.  However we have have asked them to try a X-Type Magna Phased array and an amplified one, but they doubt that it will make a difference. There are also Active flat panel, although not sure who sells those. They would be more acceptable at the front of the building, although the wiring would still be in the the wrong plan, and they have to somehow get the wiring across the roof.

Anyone know of any solutions that can increase the strength, or whether the X-Type Magna Phased array should work?. Would increasing the pole height help. It is currently going to be on a parapet, so the aerial will be above the roof and parapet cap anyway.