Set-top boxes allow most analog TVs to get digital ready. Now that Australia is broadcasting digital-only TV, if your TV is analog, it won't receive free-to-air TV without a set-top box.
Should I get a set-top box?
If you don’t want to buy a new digital TV, a set-top box is an alternative way of making your old TV digital ready. Set-top boxes range in price from around $50 for a basic model up to around $1000 for a more sophisticated version (see Personal video recorders
Set-top boxes are either standard definition (SD) or high definition (HD), and some have features like live TV pausing or recording to a hard disk or USB.
Before purchasing a set-top box, here are some things to consider:
with a set-top box, you can keep your old analog TV
you need one set-top box for every TV
if you receive government payments, you may be eligible for a free set-top box and installation. See Household Assistance Scheme for more information.