So things may depart from the theoretical. With my setup, I need much more capacitance, about 2-4 times the theoretical value. The more you cut and try, the more likely it is that you can get an excellent null with a number of networks for each band, with the same setting of the amplitude balance pot. Then pads are provided for five of the above phasing networks, plus PIN diode switches. The extra pads near the microstrips probably disturb the perfect transmission-line characteristics, but it still works fine at HF, and is cleaner than my old haywire setup for sure.
Components are a mix of surface-mount and leaded components.
This feeds the center microstrip. The networks do their thing, then send their signals to the outer microstrips. A single PIN diode in each of the A, B, and C legs of each network makes or breaks the connections to the microstrips. I use the MPN3700, but the lower-voltage MPN3404 would do fine. I did, just for fun, try garden-variety 1N4148 diodes in one network.