Help on the F70

[REVIER]

Gotta remember he working in a slag field. Probable not going be able to recognize anything deep enough to be unidentifiable. Just a thought

A field loaded with iron, or one good target masked by a little bit of iron in a normal site, still good info to know I would think.

 

[Elton]

Quote .................... " Hitting 77-83's broken up at 9" could very well be smaller rust particles or remnants of old iron. I have found this scenario at old farm locations around old equipment and rusted sheet metal".

.......................... Yep your dead on........... I have hit many that turned out to be rust in the ground in a clump till broken up by the dig..

I also have hit many old early 1960's pull tops that read good too. No other target in the ground. just the pull tab.......... It is what it is..The 70/75 reads those tabs as high coins..

 

[IBdiggin]

Gotta remember he working in a slag field. Probable not going be able to recognize anything deep enough to be unidentifiable. Just a thought

A field loaded with iron, or one good target masked by a little bit of iron in a normal site, still good info to know I would think.

Absolutely any additional info you can use to come to a conclusion is a big plus.

 

[Fish_in_1]

so tonight in the hunted out yard,that the f2,mine lab II, and mine lab etrac missed, settings disc1,sen 30,DE,thresh -1, i think i may be catching on as i was able to get a wheat cent at 5" with 5 roofing nails in the same 4" wide hole, was very clear but also a very small window, came up at 65 with grunts before and after on all angles, kinda like the sweet spot was only the size of the coin set on top of the ground , if people would just stop throwing nails on the ground this would be a lot easier

 

[IBdiggin]

 

[mudpuppy]

You are on it now!

I really like 42 sens, DEmode, -3 thresh, 4 disc, and of course DP tones for that kind of a mess you are hunting. like IBdiggin was saying, it sort of makes a big coil a sniper coil.
One interesting thing is to use the coil in a nontraditional swing...sometime a little high off the dirt/grass to try to isolate the good tones, once you do, you can gently and briskly tap it on top of the target to further narrow it down...the target will be right under the sweet spot....its hard to explain, working a coil vertically instead of side to side or wiggling it, but it sure picks through multiple targets under the coil by throwing the pulse straight down instead of side to side? If you ever get into a major tight coin spill, slant, multidenom stack, you will see...you can probably practice by tossing a handful of clad on the ground in a tight group along with some nails and tabs and see for yourself how an alternate coil control method works...if you can get a penny and a dime an inch apart, and isolate the two different signals by ear, you have got it!

Somebody mentioned "surgical" and it sure is with the right settings and coil control.
Mud

 

[Fish_in_1]

I'm with you on all that mud, i have found that when their is 1 good target with 3-4 bad targets around close for me it really helps to raise up even more so in the pin point mode as when the coil is on the ground the bad targets get all the attention but from 3-4" above ground i can see the exact location of the good stuff, remembering back early this year before i got the F70 i was using the F2, was getting ready to leave and old spot and and ran upon a 98-99 signal, thought it was and over load of an older beer can much like others in this area, lifted the coil and got the good high 80's signal, dug and only 2" down in a pine needle bed was the 1908 barber half near mint condition, couldn't sleep for days, now I'm just looking for 3 more coins to go with it so i can ship off and get graded...

 

[shadowulf]

The 5x10 can can give you a figure 8 type pattern in some rusty soils (nose/tail heavy pattern) I usually set the second program with a slightly lower sens, with the thresh stepped up to zero or +1. The iron concentrations will have a buzz or fuzzyness to their tone, while coins just hit.

The learning curve is steep, but not impossible. And the F70 gives you enough options in adjustment to pretty much tune into whatever ground you have