Tides   

Is there a way to convert Loran TDs to Lat / Lon (GPS)?

Dear Captain"Is there a way to convert Loran TDs to Lat / Lon (GPS)?" Dear Captain "I have fishing spots offshore that were given to me years ago. The problem is that they are "Loran" numbers. Is there an easy and simple way to convert them to the GPS numbers my modern navigation equipment wants me to provide?"

That is a question that used to be much more common than it is today. Loran stands for Long Range Navigation. It was based on radio waves broadcast from towers placed around the country and eventually the world. The system was largely replaced when the government made Global Positioning Satellite data to the general public.

The problem that conventional radio based navigation systems was primarily the shape of the waves. They overlapped but they were all centered at the tower that produced them in the first place. That meant that a lot of the positions were not rectangles. In fact very few of them were rectangles. You can see the problem here.

GPS Loran

There are a few pieces of commercial software for doing the job, but the best way we've found to do it is on a free site from NOAA lets you enter the input values and gives accurate GPS coordinates.

Thank you for sending in your question. Please tell your friends about us and please like our Facebook page!!



Can I Catch Crappie in the Summer?

Can I Catch Crappie in the Summer?

By: Captain Dave
Can I catch squid?

Can I catch squid?

By: Captain Dave
What Lures Work for Pier Fishing?

What Lures Work for Pier Fishing?

By: Captain Dave
Where are the Mangrove Snapper?

Where are the Mangrove Snapper?

By: Captain Dave
How do you approach fish?

How do you approach fish?

By: Captain Dave
Is the Gag Grouper Season Open?

Is the Gag Grouper Season Open?

By: Captain Dave
What Rig is Best for Tampa Bay?

What Rig is Best for Tampa Bay?

By: Captain Dave
When Should I Use a Snell Knot?

When Should I Use a Snell Knot?

By: Captain Dave
Fixing the Bail on Spinning Reels

Fixing the Bail on Spinning Reels

By: Captain Dave
Do Flathead Catfish Migrate?

Do Flathead Catfish Migrate?

By: Captain Dave
How can I tell what flats hold fish?

How can I tell what flats hold fish?

By: Captain Mike Cole
What Is a Carolina Rig?

What Is a Carolina Rig?

By: Captain Dave
How Fast do Redfish Grow?

How Fast do Redfish Grow?

By: Kevin Stewart
Is a Leatherjacket Fish Poisonous?

Is a Leatherjacket Fish Poisonous?

By: Captain Dave
What type of topwater lure is best?

What type of topwater lure is best?

By: Captain Dave
How do you sight-fish for redfish?

How do you sight-fish for redfish?

By: Captain Dave
Are Goliath Grouper Endangered?

Are Goliath Grouper Endangered?

By: Captain Dave
Do Grouper Bite at Night?

Do Grouper Bite at Night?

By: Captain Dave
How can I target Cobia?

How can I target Cobia?

By: Mike Cole
How do I catch the big snook?

How do I catch the big snook?

By: Captain Dave
What's The Secret to Oyster Beds?

What's The Secret to Oyster Beds?

By: Captain Dave
Should I Build My Own Rods?

Should I Build My Own Rods?

By: Staff at TOF
What's the best lure?

What's the best lure?

By: Captain Blake Smith
What Is the Meaning of a Flat?

What Is the Meaning of a Flat?

By: Captain Dave

The Online Fisherman

GHM logo