Garmin GPSMAP 292 Owner's Manual - Page 109

LORAN TD System, LORAN TD Feature, Using the LORAN TD Format

Get Garmin GPSMAP 292 - Marine GPS Receiver PDF manuals and user guides View all Garmin GPSMAP 292 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 109 highlights

LORAN TD System LORAN C is a radio navigation aid operated and maintained in the United States by the United States Coast Guard. The name LORAN is an acronym for "LOng RAnge Navigation." The LORAN system covers the entire United States and the U.S. Coastal Confluence Zone. From the perspective of a mariner, the system is used for ocean and coastal navigation. It can be used as a supplemental system for harbor and harbor approach navigation, and it is used for inland navigation by recreational vehicles. APPENDIX > LORAN TD SYSTEM LORAN TD Feature The LORAN TD (Time Delay) feature eases the transition from using LORAN to using GPS. The GPSMAP 292/298 unit automatically converts GPS coordinates to LORAN TDs for those who have a collection of LORAN fixes for favorite fishing spots and other waypoints recorded as TDs. You can show your position as a TD or enter waypoints as TDs. The accuracy to be expected from this conversion is approximately 30 meters. When the unit is placed in the LORAN TD format mode, it simulates the operation of a LORAN receiver. Position coordinates can show as TDs, and all navigation functions can be used as if the unit was actually receiving LORAN signals. Change to Loran TD from the Units tab on the Main Menu. GPSMAP 292/298 Owner's Manual Using the LORAN TD Format When creating new waypoints using LORAN TD coordinates, you must set the correct LORAN chain number and secondary stations in the Setup TD field before storing the waypoint. After the waypoint is stored in unit memory, it always references the LORAN chain number and secondary stations currently selected in the Setup TD field. If you enter a different LORAN chain number or change the secondary stations or offsets in the Setup TD field, the active waypoint information reflects those changes. Because the GPSMAP 292/298 does not rely on the LORAN signal for navigation, it can reference a different GRI chain and/or secondary stations and still navigate to the location stored in memory. 103

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
GPSMAP 292/298 Owner’s Manual
103
A
PPENDIX
>
L
ORAN
TD S
YSTEM
LORAN TD System
LORAN C is a radio navigation aid operated and maintained in the
United States by the United States Coast Guard. The name LORAN
is an acronym for “LOng RAnge Navigation.” The LORAN system
covers the entire United States and the U.S. Coastal Confluence
Zone. From the perspective of a mariner, the system is used for
ocean and coastal navigation. It can be used as a supplemental
system for harbor and harbor approach navigation, and it is used
for inland navigation by recreational vehicles.
Change to Loran TD from the Units
tab on the Main Menu.
LORAN TD Feature
The LORAN TD (Time Delay) feature eases the transition
from using LORAN to using GPS. The GPSMAP 292/298 unit
automatically converts GPS coordinates to LORAN TDs for those
who have a collection of LORAN fixes for favorite fishing spots
and other waypoints recorded as TDs. You can show your position
as a TD or enter waypoints as TDs. The accuracy to be expected
from this conversion is approximately 30 meters. When the unit is
placed in the LORAN TD format mode, it simulates the operation
of a LORAN receiver. Position coordinates can show as TDs, and
all navigation functions can be used as if the unit was actually
receiving LORAN signals.
Using the LORAN TD Format
When creating new waypoints using LORAN TD coordinates,
you must set the correct LORAN chain number and secondary
stations in the Setup TD field before storing the waypoint. After
the waypoint is stored in unit memory, it always references the
LORAN chain number and secondary stations currently selected in
the Setup TD field. If you enter a different LORAN chain number
or change the secondary stations or offsets in the Setup TD field,
the active waypoint information reflects those changes. Because
the GPSMAP 292/298 does not rely on the LORAN signal for
navigation, it can reference a different GRI chain and/or secondary
stations and still navigate to the location stored in memory.