TV Aerial cable... RG6?

[WTFH]

Quick (possibly stupid) question - what is the difference between TV aerial cable (for terrestrial digital TV, i.e. the same as we used in analogue TV days and now plugs into the freeview box) and satellite aerial cable.
From reading around, they both appear to be RG6, 75 Ohm.
Is it just the connectors?

We're getting an extension on the back of the house, and the electrician arrived today for a chat about power sockets, etc. I mentioned aerial sockets and network ones too. He's happy to connect up the TV sockets and the network ones, but he wants me to supply the Cat6 cable - which is fine, cause I should be able to get it cheap through my current employers.
But one of the network cable runs is going to follow a new TV aerial cable run so I suggested that I'd get that cable too. Now I'm starting to wonder if all RG6 is the same and I can just buy some shotgun cable to run 2 TV leads from the masthead amp down to the new extension.

(Note: If any of you are in the cable business or can get your hands on TV or Cat6 cheap, give me a shout!)

[GateKeeper_]

You will want to use CT100 or CT125, these are now the standard for satellite installs, both have a lower loss per meter than RG6 (old brown stuff) and CT125 is slightly better again.

GK

[WTFH]

Thanks. 50m of CT125 ordered, along with a vision V20 masthead amp