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14
Technical
Overview
Although there are only 16 transponders per satellite, the channel capabilities are far
greater. Using datacompression and multiplexing, the two satellites working together
have the possibility of carrying over 150 conventional (non-HDTV) audio and video
channels via 32 transponders.
Dish
The"dish"
is an 18 inch, slightly oval shaped KU-band antenna. The slight oval shape
is due to the 22.5 ° offset feed of the LNB (Low Noise Block converter), figure 6. The
offset feed positions the LNB out of the way so it does not block any surface area of
the dish, preventing
attenuation
of the incoming microwave
signal.
0
Figure 6, Satellite Dish
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