The outside materials are:
- The dish including the installation materials
- The Low Noise Block-converter (LNB), including feedhorn

Because a LNB will not work good when he is not adjusted to the concerning dish, both off them have to be adjusted. That means that the dish and the feedhorn must have the same FID-proportion: the proportion of the focus length till the diameter of the dish. A standard value for this proportion is 0,65. If the dish and the LNB of different suppliers are originating, care than that the LNB precise pace in the affirmations brace. The most affirmations braces had been arranged for LNB' s with a diameter by 40 mm. For LNB' s with a diameter of 23 mm is therefore a 'vulring' of 40 mm necessary.

The dish
Dishes reflect the signal that their surface hits, and steer these signal then to the feedhorn of the LNB. A declined, dented or deformed dish reflected not all available signals to the feedhorn. Consequence: the dish works less good and the chance on disturbances through adjoining satellites becomes cave, what prevent influence has on the image quality. Discretion and care are about that of interest by raise, transport and installation of satellite dish. The location of the dish in it order that through the satellite becomes cover (the footprint), fixed the minimal diameter of the dish. Detailed information over the required dish diameter for home reception (DTH, direct-to-home), is on www. ses-astra. com to find. For the reception of all analogous and digital programs (in the frequency reach of 10,70 until 12,75 GHz) is a schoteldiamater of minimal sixty centimeter necessary.

Discreet installation
Already to contrasterende, and therefore striking dishes become often an annoying factor. Therefore is a 'discrete installation' and camouflage recommended. Dishes and affirmations hook fit better in their surroundings as they are painted in a neutral color. A careful, lead free paint has almost no effect on the performances of the dish. We advise a paint to use that is less than thirty per cent reflecting. Heat reflection of sunlight in the LNB becomes than till a minimum limits. Dishes are available in different materials, they all have their own advantages (see table).