Thanks for the type up @lfarrand - I have come to the same conclusion, he definitely is doing the work one way or another .. I suppose I speak for everyone here in thanking you for taking the risk of a purchase, for what clarity was obtained.
Assuming there actually is something to what Don said
(I believe so after seeing the 15 hours worth of lectures on YT - They're in my YT playlist "Over Unity")
My current understanding of all this is as follows:
(Excuse any misunderstanding as I have yet to actually attempt a Donsmith style design)
LC Tank circuit consisting of HV - HF frequency module-
(ENKI's ZVS/Don's inverter/I plan to try and use the SATG for this)
Fed into an appropriate capacitor,
alongside the capacitance of the coil installed alongside it
(the connections still f*ck me up a bit

still trying to grasp the fundamental principle involved)
"cancel" each other out and produce a longitudinal impulse which "transcends" the coil itself and resonates with others of its kin..
No / very little current should flow in the primary as the LC components and the corresponding secondary's / receiving antennae are ideally beta matched and if the capacitance values etc are in correct order, the previous cycles' charge acts in opposition to the incoming oscillation - meanwhile the ongoing production and collapse of "magnetic fields" "excite the electrons" in the other "djeds" at no cost as no time was taken for the "scalar impulse" to "arrive" and thus, a ferrite core or better should be used in these applications as iron won't react fast enough, and will incur hysteresis losses,
If Enkis "TPU" unit in this video :
https://www.youtube.com/watch?v=KjdKdLfDwAI has useable over-energy properties at all, and it's power can be shared amongst other pancake secondaries without loading the source, this is where a large portion of our focus should be, surely? why waste input power on eddy current losses in even a specialized piezo-fancypants ferrite core transformer, when air core could be tuned to give looped OU by itself?
I feel there is much misunderstanding around this topic, intentional or otherwise, I am for sure guilty of my fair share but a "dumbing down" of this topic is for sure in order.. I plan to grasp the most basic principles involved and attempt a small replication at some point over the next year or so - only just started going down the "rabbit hole" on this one..
To my understanding, the components required are :
HF - HV - AC module fed into -
3 wire Step up Transformer / NST fed into -
(ground connection necessary for OU? DS says no?
if "Air ground is sufficient why stress about 3 wire if DIY'ing w/ SG's / AG's?)
Spark gap & Capacitor(Don also says SG also not necessary?)
Appropriate FBR Fed into -
Appropriate capacitor bank The capacitor bank then powers the HV module, with a limiter of some kind on it.
In the PJK book, Patrick explains a way to loop an OU - flyback based device, in that one can use a choke on the oscillator input, to allow the impulse to be absorbed more effectively back into the drive bat/cap/batcap etc..
Just a thought that could be relevant to this device too perhaps?