Hi Edwin,
You said,"The first (p.14) states that the C-field generated by a spinning Black Hole imparts (detectable) angular momentum to photons passing through the field, circularly polarizing the light. "
That is very interesting. I was toying with the idea of synthesizing a shift photon in such a way that the polarization of the next frequency starts where the polarization of the previous frequency ended. The hope is to produce corkscrew gravity forces. However, it sounds like spinning black holes already cause something like that to happen.
From reading the abstract of that article, it sounds like all five frequencies are being produced simultaneously. Do you think they will try to produce them sequencially at a high repetition rate? That is the idea of a shift photon.