A local antenna installer can advise the best target for your antenna - or email the ABC's Reception Advice Line. Trees, buildings and hills in the direct path of your antenna may weaken the signal and cause reception problems. If you can't see the transmitter, experiment by pointing the antenna in different directions. More consistent UHF signals can sometimes be obtained by pointing a UHF antenna above nearby trees and shrubs rather than directly at them. Your antenna should be installed with the cross pieces vertical or horizontal, to match the signals you wish to receive.
Some television stations transmit signals horizontally, others transmit signals vertically.
There are two common types of antenna lead and each requires its own particular connections, both at the antenna and at the TV receiver. Check your TV manual to ensure the right ones have been used. If you live in a block of units, hotel or caravan you may have a more complex 'master' antenna system, where the signal is distributed from a shared antenna system. Usually you will be provided with a wall mounted antenna socket. If this is the case and you are experiencing reception difficulties, particularly on more than one channel, consider contacting the Body Corporate or landlord to arrange for an antenna specialist to check the system.