[GreenKeys] RK-65 RF Amp Questions

[Merz Donald S]

I have this RF amp here that is making its way up the to-do list. It =
uses push-pull RK-65 tubes and a large B&W "CX" type tank assembly. The =
CX tank mounts a B&W "HD" jackbar for plug-in final coils with a =
swinging link to pick up the output. It also has a set of clips for =
adding a fixed vacuum capacitor and bolt-on plates that are used for =
neutralization on each side. It's a pretty impressive piece of =
equipment, circa 1950.

This is my first encounter with a piece of gear using RK-anything tubes. =
Has anyone seen any published circuits using RK-65s? Does that tube have =
any equivalent types by other manufacturers?   Has anyone seen a good =
summary anywhere of the Raytheon line of RK-series tubes? I can't see =
any rhyme or reason in their numbering system. And finally, does anyone =
have any RK-65's for sale or trade? I'd be interested in picking up a =
couple for spares.

Any help appreciated.
73, Don Merz, N3RHT