Using Phantom Loran - NorthStar 6000i Quickstart Manual And Reference Manual

Returning to GPS navigation
To return to using GPS signals for naviga-
tion, repeat the steps shown for selecting

Using Phantom Loran

If you have lists of fishing spots and other
waypoints that you recorded as loran time
differences (TDs), but you no longer have a
loran receiver, the 6000i can automatically
convert its GPS coordinates into TDs—in
real time, as you travel. You can display
your current position as TDs or navigate to
waypoints using TDs. The accuracy from
this conversion is generally 500 to 1500
feet.
This feature, called Phantom Loran, can
help your transition from loran to GPS. You
can use the 6000i to simulate the full oper-
ation of a loran receiver, using all of the
6000i's navigation functions as if it were
actually receiving loran signals.
These calculated TDs won't exactly match
the positions of previously recorded TDs
obtained directly from actual loran signals.
In most areas, TD errors shouldn't exceed
one microsecond. However, larger errors
are possible in areas with poor station
geometry, or for which the 6000i doesn't
have accurate, factory-programmed ASF
correction points.
Reference Manual Revision D
loran in Selecting and displaying loran, on
page 47, but choose GPS instead of loran.
Selecting Phantom Loran
To display position coordinates as
Phantom Loran TDs:
1. Press the STAR key to display the
screen.
OPTIONS/SERVICE INFO
Navigation Options , then high-
2. Press
light the NAVIGATION SOURCE option.
Edit , then press the cursor pad to
3. Press
select PHANTOM LRN.
4. Press ENTER , then press
5. Press POSITION to display the
screen.
POSITION
Setting the Phantom Loran GRI
Set GRI to change the GRI to be
Press
used in calculating the displayed TDs.
Press the cursor pad to display the avail-
able GRIs one at a time. When the GRI is
correct, press ENTER .
Reference section 2 — Position coordinates

Using Phantom Loran

Return .
LORAN
49