Chapter 7 - Creating Avoidance Points
sent the best pair of loran secondary stations. (GRI can be set
to the user's preferred GRI, as defined at the 961's NAVIGA-
TION SETUP screen; see "Preferred loran GRI" starting on page
13-19.) Not all positions have corresponding TDs. In these
cases, dashes are shown in the GRI and TD fields.
961 Operations and Reference Manual Rev. D
Page 7-15