The new selfsat h21d the almost invisible satellite antenna has single ports f socket where four digital sd or hd receiver can be operated it has a small compact and unobtrusive design and is quick and easy mounted the received power of this flat satellite antenna corresponds to that of a high quality 60cm satellite dish and is suitable for all satellites like astra 282 for freesat and sky 192 east eutelsats 13 degrees east etc sirius furthermore the h21d series triump