Already Dish TV started to selling set top boxes without antenna.
They given onam offer without antenna also.
Most of the middle East users using mpeg2 boxes for them no need antenna.
Now they stopped using asia sat 105, so you can use any antenna that is your wish,
I am using tata sky in dish TV antenna.
If you buy any dth from dealer, they can give without antenna for 300 to 500 less.
Now dish TV giving the facility through online also.