7-Element-stacked

2x7-Element

4x7-Element

8x7-Element

2x7-Element-Yagi stacked in vertical configuration

The stacking distance is 3,00m for a compromize between gain and pattern.

With 3,20m you have a little bit more gain, but greater sidelobes.

Stacking scheme:

L1 and L2 are pieces of 75-Ohm-coax with a length of 5/4-lambda or 7/4-lambda * V (velocity of propagation).

V=0,667 with full-PE cable (e.g. RG-59BU), V=0,81 with foam-PE (e.g. CATV-cable).

Horizontal pattern for 2x7-El.- Yagi-Group with vertical stacking

Vertical pattern for 2x7-El.- Yagi-Group with vertical stacking