I think what these spec sheets do not do a good job of explaining, is that there is a bullseye pattern situated around the main lobe. This means that if you scan left and right, or up and down.. you should find a secondary peak about -10db lower in each of the 4 directions when properly aligned. Inexperienced installers can easily get mis-led by peaking to this side-lobe ring and miss the center of the bulls eye entirely by being too high or too low.
Peter Kranz www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207-0000 pkr...@unwiredltd.com -----Original Message----- From: AF <af-boun...@af.afmug.com> On Behalf Of Nate Burke Sent: Thursday, November 04, 2021 7:56 AM To: Animal Farm <af@af.afmug.com> Subject: [AFMUG] Licensed Dish RF Pattern We were aligning an RFS 18ghz dish, and the climber said that he found a bunch of Sidelobes as he was moving it around. I went looking for the RF pattern of the dish to see what they looked like, with the Centerline and the peaks and valleys going away from it, but I don't find the RF pattern on the RFS Website. Is that something that the licensed dishes don't do or have I just not found it yet? -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
