In facsimile, a frequency modulationsystem where one frequency represents picture black and another frequency represents picture white[?]. Frequencies between these two limits may represent shades of gray
An intentional frequency change used for modulation purposes
... Reservation[?]
Ramah Navajo Indian Reservation[?]
Acoma Indian Reservation[?]
Laguna Indian Reservation[?]
Canoncito Indian Reservation[?]
Isleta Ind ...