Furuno back gp-80 Manuel D’Utilisation

Position can be displayed in latitude and lon-
gitude, Loran C LOPs, or Decca LOPs, and
the default format is latitude and longitude.

1) Press [MENU ESC]  [9] and [8] to dis-

play the LOP SETUP menu.

2) Press ▲ or ▼ to select Pos Display.

3) Press t or s to select Lat/Long or LOP.

4) Press the [NU/CU ENT] key.

1) Press [MENU ESC]  [9] and [8].

2) Press ▲ or ▼ to select Pos Display.

3) Press t or s to select LOP.

4) Press ▼ to select LOP Display.

5) Press t or s to select LC (Loran C) or

DE (Decca).

Follow 1 or 2 in the adjacent column ac-
cording to selection in step 5.

1

1

1

1

1 For Loran LOPs

6) Press ▼ to select LC Chain.

7) Key in GRI code referring to the Loran C

chain list appears in the Appendix. If the
GRI code is 9970, for example, press [9]
[9]  [7]  [0].

8) Key in secondary code pair referring to

the Loran C chain list in the Appendix.

9) Press ▼.

10) Key in correction value.

11) If necessary, press [

] to switch from

plus to minus or vice versa.

12) Press the [NU/CU ENT] key.

13) Press the [MENU ESC] key.

2

2

2

2

2 For Decca LOPs

6) Press ▼ to select DE Chain.

7) Key in Decca chain number referring to

the Decca chain list in the Appendix. For
the Europe chain, for example, press [0]
[1].

8) Key in Decca lane pair. Red, [1]; Green

[2], and Purple [3].

9) Press ▼.

10) Key in lane correction value.

11) If necessary, press [

] to switch from

plus to minus or vice versa.

12) Press the [NU/CU ENT] key.

13) Press the [MENU ESC] key.

Pos Display          Lat / Long      LOP
LOP Display         LC                 DE
LC Chain             7980 : 23-43
        LOP         -12.3us    +0.34 us
DE Chain             24:G - P
        LOP        +0.80 Lane  -1.00 Lane

            (RED:1 GREEN:2 PURPLE:3)

LOP SETUP

 Pos Display

MENU : Escape

 :  Select

ENT : Enter

: +/–

 Lat / Long