This photo shows the 15m homebrew stack match. This enclosure is mounted at the base of the tower, with equal length transmission lines to the stacked antennas. The transformer, an unun (unbalanced to unbalanced) is wound on a F-250-K core. This setup is for splitting power between the upper and lower 15m monobanders. High power relays have since been added to allow switching between the the upper, lower, or both.