the beam,of atlantic bird 4,is very high foucused!
here,in austria it is very strong,with 90 cm like astra,in east germany up to 700 km away,you need 2,40 m dish for atlantic bird 4,also christan lyngmark,needs this dish size (belgium region i think he lives!
i only heard reports,from people lives in nigeria,that is posible to reveive astra,with 4 Meter dish,i can not check this,myself only reports from the net !
what satelites,you can get,with your antenna in tanzania?