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Message: <blockquote data-quote="s-band" data-source="post: 1116500" data-attributes="member: 407744">I took a 12.25-12.75GHz LNB and tweaked it so that the response >13GHz improved. It's not fantastic but works well enough. With the 11.3GHz LO the highest frequency on a TBS69x3 card is 13.75GHz but it does go a bit higher. I don't know of an LNB that covers the whole range 10.7-13.65 It would need a bit of work to avoid spurious responses and probably be expensive. [USER=178786]@moonbase[/USER] had some extended Ku LNBs which are described somewhere on this forum.The Prodelin dish design makes it very easy to swap electronics and feed assemblies so that's how I change bands. I have S band through to 32GHz heads for it. For your large dish it would be harder. Have a look around the forum for LNB changers that [USER=181524]@Trust[/USER]  and others have done.</blockquote>