- Sep 15, 2006
- 2,345
- 1,150
- Detector(s) used
- Equinox 800, Fisher F-75 LTD2, CZ-70, CZ-21, 1280x, Vibraprobe 560, Minelab Pro-Find 35
- Primary Interest:
- All Treasure Hunting
I was playing around with the F75 today, coming up with ID numbers for common items and testing it with coins and trash. This was an air test, nothing touching or in the ground, all was set up on a bench. My setup was Sens. 70, DE mode, 3 tone, Stock coil.
I found out some interesting things testing it with the coins and trash setup. I wanted to see how close I could detect a coin next to a pulltab and a steel bottlecap. I recieved a consistent coin signal with a pulltab directly on top of a silver half dollar. I tested a silver quarter and silver dime with the pulltab and bottlecap, the closest I could get on the quarter was about 2 1/2 inches center to center, and I got a one way trash, one way coin signal. With the dime the closest I could get was 3 inches center to center, with one way trash, one way coin signal.
Needless to say I will be digging more of the one way trash one way coin signals in super trashy spots. Plus in real trashy areas I use lower sensitivity. In many areas I dig all tab signals anyway, so that takes them out of the equation.
O.K. here are some ID number results, If you look closely you can see a difference between silver and clad.
Worn dug 1892 V Nickel 29-30
Dug 1919 Buffalo Nickel 30
1903 Barber Half 88-89
1944 Nickel 33-34
1944 Quarter 86-87
1936 Mercury Dime 75-76
1902 I.H. Cent Dug 60
10k Mens Ring 44
Modern coins
Zinc Penny 61
Nickel 31
Dime 71-72
Quarter 82-83
Civil War Buttons ( Union )
2-Piece Artillery Officer Coat Button 58-60
1-Piece Artillery Officer Cuff Button 57-58
3-Piece Officer Cuff Button 63-65
3-Piece Officer Coat 59-61
Ball Button or Zuave Button 68-70
Of course numbers will vary some in the ground, especially on the copper, brass and nickel items.
Just thought some folks might find this interesting, and maybe do some testing on thier own and report it so we can all understand our detectors even better.
I found out some interesting things testing it with the coins and trash setup. I wanted to see how close I could detect a coin next to a pulltab and a steel bottlecap. I recieved a consistent coin signal with a pulltab directly on top of a silver half dollar. I tested a silver quarter and silver dime with the pulltab and bottlecap, the closest I could get on the quarter was about 2 1/2 inches center to center, and I got a one way trash, one way coin signal. With the dime the closest I could get was 3 inches center to center, with one way trash, one way coin signal.
Needless to say I will be digging more of the one way trash one way coin signals in super trashy spots. Plus in real trashy areas I use lower sensitivity. In many areas I dig all tab signals anyway, so that takes them out of the equation.
O.K. here are some ID number results, If you look closely you can see a difference between silver and clad.
Worn dug 1892 V Nickel 29-30
Dug 1919 Buffalo Nickel 30
1903 Barber Half 88-89
1944 Nickel 33-34
1944 Quarter 86-87
1936 Mercury Dime 75-76
1902 I.H. Cent Dug 60
10k Mens Ring 44
Modern coins
Zinc Penny 61
Nickel 31
Dime 71-72
Quarter 82-83
Civil War Buttons ( Union )
2-Piece Artillery Officer Coat Button 58-60
1-Piece Artillery Officer Cuff Button 57-58
3-Piece Officer Cuff Button 63-65
3-Piece Officer Coat 59-61
Ball Button or Zuave Button 68-70
Of course numbers will vary some in the ground, especially on the copper, brass and nickel items.
Just thought some folks might find this interesting, and maybe do some testing on thier own and report it so we can all understand our detectors even better.
...Hi guys I have just started using the all metal mode a bit more..But after my beach trip I'm hooked for sure..The F75 seems to have an option for any kind of hunting..Jim same here with coins I have found a nickel at 9" in a playground tot lot part saw shavings part dirt in
