RHF wrote:

4320 kHz SIO 1.5 2 1.5

Note - The 4320 kHz Audio did not pair-up with AFN
Guam on 5765 kHz USB. -cause- I First thought
that AFN Diego Garcia was off-frequency by 1 kHz.

Who's Broadcasting in American English using
the AM Mode on 4320 kHz ?
Tropical station?

Do you hear a lot of fishing boats? That's what I hear at random places.
Mexican fishermen. They just use any blank spot on the dial they want to.