On 30 Nov 2018, at 8:23 pm, Udo Langenohl &lt;udo(a)dk5ya.de <mailto:udo@dk5ya.de>> wrote: Keith, that won't work since the dish will ruin the pattern of the 4 bay group completely. Any kind of metal inside the fresnell zone of the yagis has a huge influence. Unfortunately... 73 Udo DK5YA Am 30.11.2018 12:58 schrieb Keith via Moon-net &lt;moon-net(a)mailman.pe1itr.com <mailto:moon-net@mailman.pe1itr.com>>: I have somewhat of a logistics nightmare at my QTH. I’ve moved my 2.3 mtr dish with septum feed for 23 cms onto a small crank up tower to give me access to feed changes and better moonrise positions. This will normally be left retracted when not in use. I have to raise it to approx 6 mtrs above ground to clear neighbouring houses for moonrise and my own house for moonset, it CAN go to 9 mtrs but might blow around in the wind a bit :(. I have four 7 ele LFA yagis that I’d like to use for 2mtrs eme as well. Now has this been done before and how can the results be modelled and checked. Space is at a premium at home so what I’m thinking of is this. Using the existing Alfa Spid RAS az/el rotator for the dish, mount the four yagis on a stacking frame spaced around the dish. Obviously the dish will still be fully illuminated but what effect would it have on the four yagis spaced around it. I had planned to mount the yagis on a H frame with 2900 mm horizontal spacing and 2700mm vertical spacing but this can be altered to suit. The yagis would be some distance from the rim of the dish and be centrally mounted, or possibly slightly forwardly mounted if necessary. Can this be done ? I do not have the brains or the skills to do the calculations, but if it would work this would end up getting me on all bands from 144 mhz to 10ghz for EME in VK6 I will be able to change the feeds on the dish from a small stepladder, and I can use a 1.3 mtr solid dish for 2.3 and 3.4 ghz from another location on my roof. Maybe even with 4 similarly stacked 70 cms 21 ele crossed yagis on this other tower, well roof mount. Am I dreaming or is this possible ? My primary objective is 23 cms and 6cms EME from home and 3 cms EME portable, all the others bands are a bonus and not essentials, but it would be nice to have :) If those in the know can do some calcs to help see if this is possible then I hope to reward you with my eternal gratitude and a contact on EME someday soon. If not then it will just have to be 23 cms at home and 3 cms portable :( I dont have the knowledge to draw a diagram of what I’m suggesting on my Mac but I have a good hand drawn sketch I can scan and email to anyone who wants it. This reflector is a fabulous source of information so thanks in advance :) Cheers & 73 Keith keith(a)vk6eme.com <mailto:keith@vk6eme.com> VK6KB / VK6EME 0488 228 088