F-75 LTD and depth reading

[buckeyetreasurehunter]

Anyone else having trouble with the LTD giving wrong depths on coin size objects? I probably have 20+ hours on the machine now and feel like I have a good feel for it. When I dig my plug my target is in the center or ery close but the depth is usually off. I was at a school a few weeks ago and was digging memorials like crazy at 2-3 inches and the LTD was saying they were at 6+!!

I thought maybe something was wrong with them machine but I have talked to a few other F-75 users who are having the same problem. Accurate Depth is important to me... I have a few sites that are very large and filled with clad, after digging several dollars worth of clad from the sites I started concentrating on deeper signals with one of my other machines and started finding silver, indians etc. So am I doing something wrong with the F-75 or is it just not a good machine for these kind of places where I want to know the accurate depth before I dig?

thanks for any help!

 

[osgood]

My LTD is often off about two inches. So I just do the mental adjustment- I suppose the deeper the older, certain parks I find older coins say at six inches or more, so I look for eight inches on my meter, dont know if that makes any sense. But again no two parks are alike. The post(s) on that park where I found the Barber half and other silver- luckily most of the coins where two to four inches deep- that became evident after twenty mins or so. Im glad though I didnt stick to a preconceived limit early on- I would of missed a ton. Look for a separate pattern for separate parks. Believe me. Hopefully if your machine is off, it is consistent about it. Ive used my machine probably hundreds and hundreds of hours since I got it in Feb, it takes a while to get used to, dont know if 20 hrs is enough, I have said I would give it a whole season before judging it- but Im sold by now. Even with its qwerks it has consistently outperformed other machines I have owned. CO

 

[buckeyetreasurehunter]

My LTD is often off about two inches. So I just do the mental adjustment- I suppose the deeper the older, certain parks I find older coins say at six inches or more, so I look for eight inches on my meter, dont know if that makes any sense. But again no two parks are alike. The post(s) on that park where I found the Barber half and other silver- luckily most of the coins where two to four inches deep- that became evident after twenty mins or so. Im glad though I didnt stick to a preconceived limit early on- I would of missed a ton. Look for a separate pattern for separate parks. Believe me. Hopefully if your machine is off, it is consistent about it. Ive used my machine probably hundreds and hundreds of hours since I got it in Feb, it takes a while to get used to, dont know if 20 hrs is enough, I have said I would give it a whole season before judging it- but Im sold by now. Even with its qwerks it has consistently outperformed other machines I have owned. CO

That is the problem.. it isnt consistantly off. A few weeks ago I was hunting a school and probably dug 20 coins that the LTD said 6 inches and they varied from 1-4 inches.. thats just the ones that read 6 inches, I probably had 6 plus that read 8 inches and varied from 2-5 inches... they are all over the place with this machine.

I thought maybe I had a coil problem but I have found a few deep coins and not getting anything erratic. I like the machine but for hunting schools / parks I am about to give up on it completely and see how it does this fall in the fields.

 

[jim tn]

Like osgood, my ltd is off a couple inches or so on deeper, dime sized targets. Just for the heck of it, set your sen. on 29 the next time you go swinging and see how the low gain 29 and lower setting reads. On mine, 5 and 6" target depth readings are almost spot on...and so is the vdi. HH jim tn

 

[boxofchocolates]

Ditto what Jim said here......hh........Dan

 

[marcomo]

My LTD is very deep, just not as deep as it thinks it is!

Deep or shallow, my LTD usually exaggerates about 2" on coin sized targets. Regardless of mode.

I know I'm going to get hammered for saying this, but...

I wonder if the extra depth on the readout is a marketing ploy?

After all, depth sells detectors. Especially high-end detectors. And many dirt fishers want to brag about depth and are happy to say it was a 10" coin if that's what the detector says it is.

As Osgood said, you make the mental adjustment.

 

[buckeyetreasurehunter]

Like osgood, my ltd is off a couple inches or so on deeper, dime sized targets. Just for the heck of it, set your sen. on 29 the next time you go swinging and see how the low gain 29 and lower setting reads. On mine, 5 and 6" target depth readings are almost spot on...and so is the vdi. HH jim tn

thanks! I will give that a try!