TV signal is almost always present. Signal is actually part of the light spectrum. Light you perceive it because it illuminates your environment but the RF spectrum is tucked away in that light. Man has learnt how to use it to transport messages around the globe. Like the trading barges of the past riding on the river the TV signal rides on the back of this natural wave/ energy called RF spectrum: Radio Frequency spectrum. An interesting thought why is it call Radio Frequency and why not something else.
Radio today comes in 3 formats: AM, FM AND DIGITAL. Let’s first look at AM. This is what has been used for many many years as the very long wavelength makes it functional for use where distant reception is needed. The downside is the waves are very long and interference easily occurs. Still today there are many am stations continuing to operate.
In Australia today most transmitting towers for television in regional areas are UHF. However, for caravanners travelling interstate their Caravan Antenna still has to work on VHF because all Capital city main transmitters are VHF. It is true there are satellite systems around the main city which are UHF but carry the same programs. But note the big transmitter is VHF.
Several factors can affect this:
- Environment – Television signals obey the physical universe and bounce of anything solid. Hills, trees, well you name it, can weaken the signal. Also, the further the signal has to travel the weaker it gets. A good antenna will be able to function effectively despite the barriers. Read More
The signal is energy and like all energy, you can spend it well and get a result or you can waste it. Our range of Thru-the-Wall connection kits allows you to use the energy generated by the antenna to its full capacity.
TV Antenna vs Satellite Dish Advantages vs Disadvantages
We have a number of satellite delivery services in Australia today including the pay service Foxtel. Vast is another satellite service which is the national system set up to cover areas of no terrestrial TV signal. Designed for households known as black spot areas. Caravanners can also have access to vast for off air free television. The only downside is you get no local content and you have to apply every 6 months to use it. In this blog discussing about the TV Antenna vs Satellite Dish advantages and disadvantages.