Many thanks to SWLing Post contributor, Benn, who writes:

[Skycast (WI2XER)] is a station in the Experimental Radio Service, licensed under Part 5 of the FCC Rules.

Benn provided the following details:

New experimental to operate in HF bands from 13.87 MHz to 21 MHz to pursue significant advancements in the state of telecommunications technology.

Benn continues:

HF operations in the ERS are rare. I have been following ERS for years.

Applicants in this service are required to describe their experimental program, but can ask the FCC to withhold certain details from public disclosure. That is the reason for the redactions.

The actual purpose of this Skycast is not obvious from the available documentation, but some intrepid investigation may reveal it. SWLs should listen for these operations. The company said that the receivers are in Western Europe.

Experimental stations are not supposed to directly generate revenue. There are occasional exceptions. Most ERS stations are for defense and security related developments, specific demonstrations or academic research.