Today finished the 50MHz splitter for the 2 yagi system. The splitter is made of two quarter wave 75 Ohm coax 6 pieces.  When both ends are terminated with a 50Ohm resistor the  impedance is  ~50Ohm at the connection between 50 and 52 MHz.

The velocity factor is 0.85. I took a lower factor and made the quarter wave a little to short. This is also been measured but its within the specification range. so we go for it.