[Lowfer] 6.78 MHz?

[KD7JYK DM09]

I see under Part 18 there is another ISM frequency, 6.78 MHz, which has the 
following note:

Note: The use of the 6.78 MHz 15 kHz frequency band is subject to the 
conditions of footnote 524 of the Table of Allocations. See Sec.  2.106.

I can't find any footnote 524 under 2.106, any one else?

How about this:

Sec.  18.305  Field strength limits.
    (a) ISM equipment operating on a frequency specified in Sec.  18.301
is permitted unlimited radiated energy in the band specified for that
frequency.

Does this mean multi-KW HiFER beacons?

I can't make sense of this.

Comments?  Seems things have changed over the years.

Kurt