Yup, actually trying to make an alternative to a homeplug system. homeplug is slow, sub-100Mbps real world.
So for inductor selection, just as high of inductance as is possible at an SRF that is above the DSL freq of ~232MHz, with enough Isat for the application?
Looking at some inductors, SRF > 260Mhz, current rating ~ 1 amp, 1uF - 3uF inductance because thats all I saw at digikey with a high SRF and current capacity.
Eg BRC2012T3R3MD, BRHL2518T1R0M, 74406032010, 74406032010, B78148E1102K000. Not trying to optimize selection yet, just breadboard atm.
Then just splice in power through the inductors like this, I guess? (Probably would have more protection circuitry later, esp for HVDC)