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L/S helix feed
- Subject: [amsat-bb] L/S helix feed
- From: w7lrd@xxxxxxxxxxx
- Date: Mon, 23 Oct 2006 23:46:52 +0000
- Authentication-Results: mailbox1.ucsd.edu from=w7lrd@comcast.net;domainkey=neutral (no signature; no policy for comcast.net)
Hello
Questions on my current L/S helix feed.
I am building a dual L/S concentric helix feed for a 48x54 inch primestar dish. The reflector is cut for L band does that cause a problem with S band? Where can I find a good design for a notch filter for S band to reduce desense? Where does the focal point want to be on the helicies? Or is it pretty forgiving. Any other information is appreciated.
73 Bob W7LRD
Seattle
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