I hope there is a perfect conversion., but I proved everyone wrong last year on this.. go on and convert my house loran number to gps number, write back on this post and I will take your gps number and punch it in my gps here at the house and the distance should be 00.0 right.. good luck.. here are my loran house number:

14323.0-44445.3

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http://www.saltyshores.com/vids/capjay.html

I have two gps systems in my boat.. one is the WAAS system, and the other is the regular older gps.. and they dont agree to pinpoint on numbers, they are about .15 of a mile off.. I can reset the old gps to match the numbers of the new gps, however for 6 years I have been writing down numbers from my old gps and have too many numbers that produce fish to reset the unit.. anyway my question is what one should I punch the number you give me on??I would guess the newer WAAS lowrance system..I can also try both, and see if it matches either one.. good luck to all,, and I will post back with results on everyone who tries conversions!!!

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Grouper can run, But Stainless is Quicker!!

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There is no exact conversion but I have been working on calibration improvements with Offshore Hunter in the Gulf using the 7980 WY chain. Using the closest calibration which is still a long way away from Plant City I come up with 27-59.040 82-05.183. While I can get within 100 feet when I am within 25 miles of a calibration this will not be that close. With the possible shutdown of LORAN next year Denny and I will be releasing a new version of Offshore Hunter with the calibrations I have for the Gulf programmed in to help users get closer conversions.

I had to edit my post. I entered in the TD wrong the first time.

Frank

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I'll take a shot at it..........but the type of loran you took the number with and the fact you are land based does make a difference. My conversion is: 2758.920 8205.232

A GPS gets you close to the spot but you actually find it with your bottom machine! Conversions do not have to be "spot on" if you have a great bottom machine, know how to use it, and know how to run grids.

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spear one..CONGRATS.. YOUR WITHIN 100 FOOT.. "81 FOOT" that is within range to find just about anything!!!! .. that is a great conversion.. what did you use..?? The other conversion is 1.4 miles.. sorry.. no cigar..

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Grouper can run, But Stainless is Quicker!!

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Garmin mapsource without any calibration:

27 58.454 82 05.761

I got 27 58.913 / 82 05.252 How far off is that?

Didn't I do that a couple years ago on spearboard? I put it right on your house, didn't I?

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You can't use your house position as a calibration number with Loran and expect good results offshore...too much electrical interference on land.

My best suggestion is to use www.andren.com, which is the premier software package for loran conversion. If you do buy it, and need help, call me and I'll give you the run down on how to use it and make it work. I don't have anything to prove to you.

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Not sure how your doing the math here. The difference between 2758.920 8205.232 and 27-59.040 82-05.183 is only .13 miles. Converting with no asf corrections gets you 27-28.920 and 82-05.223 which is very close to the number spear one got. Looks like in Plant City there is no correction needed to the conversion.

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Southwest Florida Spearfishing Club
What do you mean you haven't joined the FRA. Join now. http://www.thefra.org

He's probably using www.andren.com

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Wow...........that is extremely close. I did not think it would convert that well on a land based location. I used the Andren Program with a calibration correction. What direction do I need to go to make it perfect?

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last time this was done no one was close, I think it was 1/2 mile the closest.. and im not converting nothing.. all Im doing is taking your number and punching it in my gps and seeing how close it is.. as far as if the loran is accurate in plant city.. I have to say no doubt yes.. I have had three different boats living here, all with different lorans, and all agree on my house number.. also the signal strength is over 90 out of possible 100,, usually the signal is 95 or 96, and its the same on the water, so the loran, at least where I am, is very accurate.. I just looking for something to work to convert loran numbers over to gps that works, as I have TONS OF LORAN numbers, middle grounds and closer, that I have never been to yet. anyway im headed out of town til tuesday, and its too cold to go out in boat and punch any numbers in, so when I get back into town I will punch in any takers, but we all know what is in the lead, and im sure WILL STAY THERE!!! within 100 foot or less is awesome!!!

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Grouper can run, But Stainless is Quicker!!

http://www.saltyshores.com/vids/capjay.html

inletsurf... Im not trying to prove anything, just want to see if there is a conversion that works, as I believe loran system as we know it is going to be turned off early January.. if there is a conversion that works im going to buy it without a doubt, and so far im interested in the one that is within 100 foot for sure.. I have always liked loran, as Im old school when it comes to loran and have had great luck finding everything im looking for....

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Grouper can run, But Stainless is Quicker!!

http://www.saltyshores.com/vids/capjay.html

sorry on the other conversion.. I put the "." in the wrong place.. its .14, over 10th of a mile.. not too bad though..

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Grouper can run, But Stainless is Quicker!!

http://www.saltyshores.com/vids/capjay.html

Speargunking, I can fine tune my calibration if you can tell me which direction your GPS says my number is from yours.

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What about the non calibrated conversion number of 27-28.920 82-05.223. Is that any closer to your GPS number. Also are you using the WAAS GPS setting or the older one? While there is not much use for calibrating land based numbers since we are all hunting offshore, I would like to figure out the correction just to see what it would be.

Frank

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Southwest Florida Spearfishing Club
What do you mean you haven't joined the FRA. Join now. http://www.thefra.org

The most important factor to know is what direction you should work from the converted GPS number. My conversion direction is about 30 to 35 degrees at a distance of about 125 to 150 feet.

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Jay

Remember what I said years ago when you said "the only way to convert loran numbers is by a gps" and I indicated that one day you'll have 3000 or so numbers and no loran signal, so what are you going to do then? Not to worry, a lot of people are having a more open mind now. To "test" us out using your driveway as a conversion spot isnt' really helpful, since there are unpredictable electrical interference sources that will skew the number. You are searching for a "push of the button" loran conversion and quite simply, there are none. It takes a bit of "legwork" to establish a handful of calibration numbers bounding the area of numbers you wish to convert. But once you've done that, whether you enter 50 or 50,000 loran numbers, it then becomes "a push of a button". We have a thread in the "General Spearfishing Section" where users can post calibrations for many different areas. I plan on populating that for Canaveral, ponce, and sebastian when I get some free time. That way, users of OH or Andren software can use calibrations at will. Also, this will not be giving away spots, as a calibration number can be over the flat sand...anywhere as long as you have a simultaneous WAAS gps and loran number. Preferably offshore and bounding your area numbers you wish to convert. Like several distributed every few miles. May take several trips to acquire a full set.

I have learned how to fast-import numbers, to use scanners with optical character recognition to make bringing numbers into digital format easy. I have learned a lot of tricks and have posted many of them through posts on here, florida sportsman, and spearboard over the past 5 years. I certainly wouldn't mind helping you establish conversions and walking through the software with you if you choose to do this. Case in point: 3 weeks ago I found a new wreck off of an old loran number, over 10 miles away from the nearest calibration number. My conversion was about 80 feet from the actual loran "zero" spot, and about 100 feet from the actual wreck. This is over 10 miles away from my nearest calibration! Now I have that spot as a calibration for that area. In my usual area bound by calibration numbers, my conversions are routinely about 30 feet off on the average. Do some searching using "loran" and my screen name to find some old posts...I just don't have the time right now to post them up. I tried to find that old thread where you had us find your house using the loran number, like you do here, but I couldnt' find it???

Let me know if you need any help Jay. Whether software package you use, or if you plan on doing the single offset entered into your furuno while displying loran format trick, I'm sure I can be of benefit. There are different ways to get around this problem, some with high accuracy and some with reasonable accuracy (but easier to do and less legwork), but as you said, with a little "luck" and patience, and reasonable conversions, you can find your spots. Its all how much you want to invest in time.

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we are all wayfarers with a wish to stay alive
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Here's the old thread Jay:

http://www.spearboard.com/showthread.php?t=33495

Spear One won the contest last time...140 feet from true position.

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we are all wayfarers with a wish to stay alive
for a cause for a dream
theres much to move in a moving sea