I am sad to say my maths are far below the required to work out inductance and capacitance values for a 4 port Wilkinson combiner based on this YouTube video linked below. I successfully made a 3 port one using this on line calculator (below), but despite intense Googling I cannot find one for a 4 port version. I need to make one for four 50 Ohm port impedances in and out on 137.5 kHz (LF). A big ask but if someone has bit of spare time the figures for the needed caps and inductances would be GREATLY appreciated, some Paypal money is not a problem! I will be using a star format resistor network, and I know these need to be Zo (50 Ohms) each.
Thank you VERY much JimB that was very helpful and using an on line reactance calculator I managed to get the same result and now understand the procedure enough to build it