Using Phantom Loran - NorthStar 941X Reference Manual

loran info
checking GPS
status
returning to GPS
navigation
Using Phantom
Loran
Phantom Loran
operation
Page 32
INDICATOR
SNR
Signal-to-Noise Ratio is low—use caution
BLNK
Coast Guard is transmitting a blink signal indicat-
ing a probable transmitter problem
CYC
the receiver has detected a possible cycle slip
LOCK
the receiver has locked onto the loran track point.
This is not a warning indicator but an indication of
normal performance.
Note: These indicators are available only from Northstar 800 lorans.
The "L/L" indicator to the left of a TD designates it as one of the two TDs
that the loran receiver has chosen to use to calculate latitude and longi-
tude.
The "F/L" indicator to the left of a TD indicates that it has been forced by
the user to be used to calculate lat/lon.
To check the quality of signals being received by your loran, press the
LORAN INFO menu key from the LORAN POSITION screen. The Sig-
nal-to-Noise Ratio for each loran transmitting station is displayed
graphically. Press RETURN to go back to the loran position screen.
To temporarily display GPS coordinates and signal status, press the
CHECK GPS menu key. The unit continues to navigate using loran, and
will display loran data the next time you return to the position screen.
To return to GPS signals for navigation, repeat the steps shown above for
selecting loran, except specify GPS instead of loran.
The 941X's Phantom Loran feature is designed for those users who have
compiled lists of fishing spots or other locations as loran TDs, and are
now using the 941X as a GPS-only navigator. The 941X will mathemati-
cally convert GPS lat/lon coordinates to loran TDs, enabling you to dis-
play your position as TDs.
The 941X may be used to simulate full operation of a loran receiver. Po-
sition coordinates may be displayed as TDs, and all navigation functions
may be used as if the unit were actually receiving loran signals. Remem
3 — Basic Navigation 3 — Basic Navigation
3 — Basic Navigation 3 — Basic Navigation
MEANING
Rev. D