Perhaps this may clarify the situation.
If you have a sky box in Turkey,have the necessary size dish,pay a Sky subscription,you will receive the package.If you pull the viewing card out you will still receive the free channels,BBC1,ITV1/2/3,and all other free tv stations and radio stations.
A Freesat box,bought in the UK,will give you all the channels as above without any subscription.
I dumped Sky months ago for the simple reason we have gone HD,have bought a HD ready tv,HD DVD recorder,had a Freesat HD brought over from the UK,and rather than pay Sky £10 a month extra for the HD facility told them to poke it.
The dream box performs in exactly the same way as the Freesat box and the Sky box minus the viewing card.If I turn the modem off,thus breaking the connection I still receive the free channels.
I've read the countless posts re UK television in Turkey,and can understand the frustration in trying to obtain it,all the different packages,systems etc.Obviously it all comes down to the size of the dish,in this case bigger is better.
We have a 3metre dish,which at the time,8yrs ago,and after hours spent looking at info on the net was the size required to receive the signal for Sky.
What minimum size dish you need for the dreambox to work for the Sky package or any other package I have no idea,like I said on here months ago,if you live on a complex,have like minded neighbours,chip in for the dish,spread the cost.
The dish cost,with installation,£1,000,came from Istanbul,and if you buy one,specify it comes with a 0.3 LNB,preferably multi outlet,as they are prone to blowing in violent storms.