Fig 17-2 shows the configuration layout, while Fig 17-3 shoes the hardware store perforated aluminum sheet reflector with the dipoles in place. The reflector is made rigid by pieces of 1×1× 1⁄8 inch aluminum angle around the edges and 1× 1⁄8 inch bar stock across the dipole mounting locations. Each dipole is made from two 5 1⁄2 inch long pieces of 3⁄4 inch OD aluminum tubing insulated at the center with 1⁄2 inch black PVC lawn sprinkler couplings. The dipoles are insulated from, and mounted on, aluminum angle brackets that provide a separation of 5 5⁄16 inches from the reflector and 191⁄2 inches from its opposite number