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Old 11-28-2004, 11:42 AM
stardust stardust is offline
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C-Band and offset dishes.

A few years ago I wanted to receive some tv channels from South America from the NSS 806 and the Intelsat 805.
So I set up a 1.80m prime focus C-Band dish and this works pretty well, altough I can not receive every channel on this satellites.
But a bigger dish is not possible.
Therefore I desided to set up a 1.80m offset dish, because an offset gives more gain and less losses.

Because there is almost nothing for C-Band here in Europe I imported lnbf/polarotor/corotor from the USA, but they are all designed for prime focus.
Only Channelmaster seems to make C-Band feeds for offset dishes, but there are no consumer resellers, obviously only meant for the professional marked.

I just wonder why there is so little available for offset, because it has so much adantage above primefocus.
If any of you know how to get these offset feeds, yust let me know.

I am also the hobby kind off guy.
Therefore I made already an offset scalarfeed, put this on a lowcost 13K lnbf and tried it on my 1.20m Channelmaster offset dish on a strong C-Band channel.
Results on my satcruiser:

1.80m primefocus result

1.20m offset result

feed picture

This is not the end of the line, because I planed to make more different offset feeds.

I like to know if any of you ever experimented with offset on C-Band before.
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