1. Line of sight from main transmitting towers.
Obstructions that block a clear line of sight between your location and the transmission tower impacts the quality of your TV reception signal. Trees, mountains, tall buildings and other structures can cause interference to the signal.
2. Distance from main transmitting towers.
The quality of TV reception is directly impacted by the physical distance between your location and the transmission tower from which the signal is broadcast. The further away from the tower the higher likelihood that reception can be affected.
3. Condition of existing antenna.
Antennas, like everything, have a lifespan. Australia’s climatic conditions can be harsh, and an antenna is subject to these conditions 24/7. An antenna will gradually deteriorate over time and if your TV signal is suffering from interference, it is possible that your antenna may be damaged and in need of replacement.
4. Your TV / Home Entertainment Equipment
Additional TV outlets
The more TV outlets you add to operate additional TVs from a single antenna can weaken the signal and may require the installation of an amplifier (also commonly referred to as a booster) to increase signal strength.
Antenna facing wrong direction
If your signal is poor, it may be because your antenna is not facing the transmission tower.
Age of equipment
The age of your television, home entertainment equipment etc can impact on the quality of signal received.
5. Impulse Noise
Impulse noise can be caused by household electrical items like appliances, light switches and hairdryers. Try moving items away from the TV and cabling.
A digital ready antenna system has:
An antenna designed to receive VHF Channels 2 to 12 & UHF Channels 28 to 48;
Has a high quality cabling system with high immunity to electrical interference, eg. RG6 quad shield; &
Has an F-type connector interface from the antenna throughout the system to the wall plate.
Whether in use or not, each TV point reduces the signal by approximately 8%. The desired signal strength is between 55 to 80 dB. If there are four or more points operating from the one antenna, the signal would likely fall below the required standard and an amplifier with power supply would be required to boost the signal