I have seen over the years that you can ask the most obscure question on this forum and damn if there aint someone that can answer it. So here is my long shot. I have old Loran numbers that I need converted into GPS. Anyone have that app or can do it on their GPS unit. Numbers are for a dive site off the S Florida coast. Numbers are from 1988 or before: 62101.3 / 14269.6

62101.3 / 14269.6

Lol, I haven’t seen a chart in a long time that had loran on it, of course I haven’t sailed and acted as navigator for twenty years...

But I think that most gps devices have a conversion in them

Have you tried the book for your GPS?

This message has been edited. Last edited by: MikeinNC,

According to Garmin, all current (Garmin) GPS models can handle this. Does this apply to your GPS?

That's a device I haven't heard of in a looooonnnngggg time.

I think you need to know which stations sent the signals because the time difference is relative to the stations from which the signals originated.

Possible help - https://youtu.be/LcE4GgFp0d8

You could try this if you have coordinates for a few other loran waypoints you can find visually.

http://www.floridasportsman.co...15/life-after-loran/

It looks like there really isn't a way to convert without some error due to limitations with Loran technology.

quote:

Originally posted by ffips:
According to Garmin, all current (Garmin) GPS models can handle this. Does this apply to your GPS?

That is the ask, i dont have a Garmin or any other unit (sold the boat years ago) so I figured if someone had a Garmin or something the same they would load in those Loran numbers and "presto" I get GPS numbers!

And I understand they wont be perfect, but I just need close. My only source for this site has visual line ups also....but the sky line has changed significantly since it's publish date, so they are no help

quote:

62101.3 / 14269.6

Macon, GA

14269.6 / 62101.3

Bud Krohn Reef

quote:

Originally posted by trapper189:

quote:

62101.3 / 14269.6

Macon, GA

14269.6 / 62101.3

Bud Krohn Reef

Hah! Reminds me of Yet Another True Story (I got a million of them).

Back in the early 1970s, I was a partner in an Irwin 32, moored at Burnham Park on Chicago's beautiful lakefront. On a bright sunny Saturday, we loaded up with girlfriends, sandwiches, and beer, and set sail to Michigan City, Indiana.

Navigation for this was a pretty simple; a course of 120 degrees would do the trick, but my partner was anxious to show off his new skill. Bob had been taking a course in Celestial Navigation at the planetarium.

I knew nothing about that discipline, but I certainly knew how to read a compass, so I took the helm while Bob took a shot with his trusty plastic student sextant, then disappeared below, to work out our position (I could have told him that we were 12 miles southeast of Chicago).

Bob worked furiously with his charts, navigation tables, and other stuff, while the bikini-clad ladies on deck with me passed out sandwiches and beer, and I kept an eye on the sail trim and the compass.

After what seemed like hours, Bob emerged from the work table down in the cabin, and triumphantly announced that he had a position fix. Of course, by the time he figured out where we were, we were not there any more, but thatt did not matter -- Bob had calculated that we were exactly 3.7 miles from downtown Albuquerque.

quote:

Originally posted by trapper189:

quote:

62101.3 / 14269.6

Macon, GA

14269.6 / 62101.3

Bud Krohn Reef

Not Bud Krohn reef, small area called the Sinkhole. (more of a dredge site)

I'm getting 26.18305556, -80.0633333, which puts me off Silver Shores in Broward County FL. Don't know how accurate it is though.

I'm a Yacht Captain. The only way I know how to convert them is to get a paper chart with loran numbers on it and convert them.

^^That's what I used. Then I tried to find it on my $15 Navionics Boating HD app by moving the cursor manually. I did finally figure out how to manually put Lat/Lon into it. You hit the magnifying glass and tap the Lat/Lon tab in the upper right.

So whats at those numbers?

Loran A or C? It might make a difference.

quote:

Originally posted by eyrich:
https://www.nefsc.noaa.gov/loranconv/latlonarea.pl

Bingo! I had seen that before but could not figure it out. But through hit/miss I got it to work!

I think it will get me close.

quote:

Originally posted by comet24:
So whats at those numbers?

I believe it is an old dredge site for a beach refurbishment project in the 70's. 65' deep and nothing but sand all around it, but get to the pit and it drops to 95'. Pretty much a shear wall to the south. About the size of a football field more or less. Last time I dropped on that site was in the mid 90's. Would like to see how filled in it is now after all the hurricanes and storms.

quote:

Originally posted by Drew136:
I'm getting 26.18305556, -80.0633333, which puts me off Silver Shores in Broward County FL. Don't know how accurate it is though.

Way off, those numbers are in 300' of water. interesting is that the numbers I posted from my old Loran were spot on, I had numbers from a book, they were off a bit, but got me close.