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Message: <blockquote data-quote="Joolz" data-source="post: 1144897" data-attributes="member: 401749">I am wondering who in the forum has a C Band dish with low f/d ratio feed  ( 0.3 or less ) and if the increased depth helps with 5G / TI ? I understand a f/d of 0.25 needs the feed to cover 180° and many of the original US C band dishes (Winegard etc) had  an f/d as low as 0.28. If you didnt try to see all the way to the edge of the dish (by adjusting the amount of the dish visable to the feed) the "unused" edge would act as a screen that would give you less gain but also less noise in the C/N ratio??? I understand this all depends on what angle the "noise" is coming from but it would be good to get some real world feedback.</blockquote>