Hi Ann Kieth.
Muggler has given the info. You can get a good sat dish kit from Aldi, Ldle or Maplins all for under £70.
I use a household mesh dish as the signal can get lost in windy conditions with a solid plastic dish. Most kits have a G clamp which can be placed on the jockey wheel to mount the dish, but that sometimes fouls the locker lid making gas changes difficult. I got a camera tripod for a fiver from a charity shop and mounted my dish to overcome the locker issue.
Maplins do a cracking signal finder for £15 which is a buzzer and a dial indicator, the instructions are crystal clear and only takes 5 mins to set the dish.
We use our Sky plus box with a 4 way LNB on the dish. All works as it does at home.
I use a 12 volt / 240 volt inverter to power the Sky box, to keep the box powered when we get unplugged for mowing. It svaes all the sky program settings.
Atb Steve L.