• High frequency uses required co-ax cable until recently. (Now its possible to stream video over twisted pair.)
• TV
• Satellite
• Baseband video (from VCRs, cameras etc)
• Radio aerial (for FM, DAB or DX reception)

It is important to use the right type of co-ax for each app. They are far from all the same, and some common co-axes simply won’t work at TV or satellite frequencies. CAI approved satellite cable is good for all the above apps, using just this type of co-ax maximises the abilities of the wiring system.