LTD Sensitivity in LOTS of iron....?

[Shambler]

What does everyone use for LTD sensitivity when hunting in an area full of iron (IE. 1860's house site in a farm field) for maximum separation WITH depth? It would seem at some point you're "over detecting" the iron and detecting beyond the edges coil therefore losing good targets.

This weekend will be my first time trying the LTD in that type of hunting. I have been using my Explorer but because of the lengthy nulls, it's not unusual to see a coin on the surface and not be able to detect it - but its ALSO not unusual to wiggle into a small area and get a 6" dime or button. I'm hoping the LTD can get better separation with the same depth - logic says so, but my experience with the 75 is common sense doesn't always translate to reality.

 

[boxofchocolates]

Shambler....as you know the default sens. setting is 60...I run 60-75.....the delta pitch tone I'm just starting to use may help ,you can hear different tones bp process...the manual says 4h for older sites also...but to be honest I try all kinds of setting and it seams they can all work you can find what fits your soil.....a lot of folks could have a different opion than mine I haven't been to a lot of varying sites yet anyway hh....Dan

 

[Elton]

Hits coins at 4 to 7 " level pretty regular.. Bp mode slowed down sweep speed. If that fails I switch to De mode.

Any higher it seems to hit the iron and registers as good high signal when in fact it's junk targets. ie: small pieces of rusty iron, and or nails.

 

[jim tn]

I still like the higher sen. and seldom go lower then 60-65, but do like 2f tones in the real trashy spots. HH jim tn

 

[Elton]

I'm kinda new to the LTD, so have a lot to learn..but have been doing lots of different things and this machine is amazing on what it will do even at low sens settings. Sure do appreciate your gained wisdom.......and you are the man!!..I will buckle down and see if I can work through the noise at higher sens settings.

 

[jim tn]

Elton, what works for me may not for you...and vise versa. That doesn't mean either one of us is wrong. One of the great things about the LTD is it can be powered way down when the situation calls for it and it still gets good depth and hit those handicapped targets. High? Low? If the end results of each are more good targets, then we are both right. HH jim tn

 

[Tinfoil]

n/t

 

[markg]

I was waiting for you to answer Tinfoil
I'm trying to remember everything you've posted on the LTD.
Thanks for the info.
mark

n/t

 

[Tinfoil]

. In all metal in the iron trash I usually run my threshold down about a -3 it knocks out some of the trash noise. You only lose about a 1" of depth between 0 and -3. I stay in BP in dis. so when I switch over to almetal I am still hunting the boost. I might run up the Sen a little in all metal in the trash and the iron trash but most of the time I run 65 to 75 in the trash.

Don't forget to pinpoint, pinpoint, pinpoint the targets. There are so many tricks to hunting in the iron and trash.

In the 2F tone mode in the trash don't forget about the sweet audio tone you will get especially on deep good targets mixed in with the iron tone. It won't be the iron tone beep or the beep of a target but, a sweet audio tone. If you listen for it you willl know what I am talking about. It is hard to explain.

Don't forget about the footprint of your coils especially when you are running up the sen. Know how big the footprint is at your different Sen. settings and how far out it goes with width of the different coils.. Check both the width and length of the coil in all your different modes at different Sen. especially the LTD.

After all, you would not go out hunting without sighting your gun in would you??? Well, why would you go out and hunt without knowing what your coil is looking at and it don't make any difference if it is a DD or a concentric coil. Just some info for you guys that hunt the iron and trash like I have to because, all the good stuff is gone down here. Oh, and don't forget the LTD Is a terriable coin shooter. Yeah right. : : HH Later Jerry aka Tinfoil

 

[Tinfoil]

n/t

 

[markg]

Thanks for taking the time out of your schedule to talk to a fellow detector freak like me.
I've been thinking a lot about the footprint of my F75. I think I'll make myself a chart of the different sensitivity settings and the width of signal coming from my coil.
Do you remember the width of your original F75 coil sensitivity settings?
Thanks for taking the time for me again.
Mark

 

[Scully]

I just had an experience last weekend at an old tavern site (1838-1854). The cellar hole had been filled in with trash by the current land owner, then bulldozed over, spreading trash all over the site. This is cropland and gets plowed and planted every year. I hunted the area 3 or 4 times with the stock DD coil, gridded it one way, then gridded it the other way. Plus my partner was hunting the site as well. I decided to give it a try with the small 6" eliptical coil and I was stunned! In a 20yard square area, I dug four more coins and 5 more buttons, plus a bunch of other miscellaneous items. One of the coins was right on the surface and I missed it with the 11" coil. Needless to say, it was an eye opener. Now most sites are not this trashy, but it showed me how bad masking can be with the bigger coil.

Also, iron infested sites will be very difficult to hunt if the soil is really wet. The "halo" of iron is exagerated when the conditions are very wet. You may have better luck waiting until it dries out, or in very dry conditons.

 

[markg]

I just had an experience last weekend at an old tavern site (1838-1854). The cellar hole had been filled in with trash by the current land owner, then bulldozed over, spreading trash all over the site. This is cropland and gets plowed and planted every year. I hunted the area 3 or 4 times with the stock DD coil, gridded it one way, then gridded it the other way. Plus my partner was hunting the site as well. I decided to give it a try with the small 6" eliptical coil and I was stunned! In a 20yard square area, I dug four more coins and 5 more buttons, plus a bunch of other miscellaneous items. One of the coins was right on the surface and I missed it with the 11" coil. Needless to say, it was an eye opener. Now most sites are not this trashy, but it showed me how bad masking can be with the bigger coil.

Also, iron infested sites will be very difficult to hunt if the soil is really wet. The "halo" of iron is exagerated when the conditions are very wet. You may have better luck waiting until it dries out, or in very dry conditons.

Also, iron infested sites will be very difficult to hunt if the soil is really wet. The "halo" of iron is exagerated when the conditions are very wet. You may have better luck waiting until it dries out, or in very dry conditons.



Great post Scully, the wet ground also affects some of my sites also.
Thanks for the post.

 

[Cal_Cobra]

Also, iron infested sites will be very difficult to hunt if the soil is really wet. The "halo" of iron is exagerated when the conditions are very wet. You may have better luck waiting until it dries out, or in very dry conditons.

I've always heard this, and a few weeks ago I experienced it for myself. At a site I've hunted heavily and pulled many old coins from, I'd about written it off as "hunted out", as the last several hunts only produced an iffy wheat or such, but no silver in several hunts. Every time I'd hunted it, the ground had been fairly moist. The last time I hunted it, it was bone dry. Right off the bat I pulled out two Indian heads, then two wheaties in the same hold as a large rusty nail. By the end of the hunt I had 3 mercs, 11 wheatbacks, and 2 Indian heads. I was a bit surprised that in an area that had been laden with Barbers and only a couple of mercs, that all three silver coins found this trip were mercs, and they were all iffy deep signals, but I thought for sure no more silver would come from this site. Now I wonder how much silver is left hiding there.

I believe NasaTom uses disc at 0 and sens at 99 in BP mode on his LTD in heavy iron, must be noisy as hell, but I'm convinced he's not human

 

[boxofchocolates]

LOL ..Cal....that got to be some chatter going on.but it must work for him.