[TowerTalk] Stacking Distance for M2'd 6m7JHV?

[TexasRF at aol.com]

Max stacking gain for dipoles is 5/8 wavelength. Max stacking gain for yagis 
varies with boom length. For the 6m7JHV with a 30ft 8in boom length, stacking 
distance will be in the 25 to 26ft range. As always, before cutting and 
drilling the stacking should be confirmed by one of the yagi modelling programs.

You can stack closer but the maximum realizable stacking gain will not be 
reached. In this case, you could be better off with a single longer yagi than 
understacked yagis. If the stacking is wider than optimum, the gain doesn't 
suffer but the main lobe becomes skinnier and other grating lobes become higher in 
amplitude.

73/k5gw