The Good:
Found this 1949-D Quarter yesterday at about 6 inches.
[attachment 108468 1949-D_obverse.JPG]
The Bad:
This quarter was found in my own backyard - in a spot that I've swept my coil (SE w/Pro coil) over at LEAST 150-200 times this past year. My worst MD nightmare comes true: I'm walking over DETECTABLE valuables with a metal detector and NOT hearing/digging them! Either my settings are/were incorrect to the point that a recognizable signal is not produced, OR I do not understand the signals that are generated. Ugh.
The Ugly:
The reverse (and some of the obverse) is coated with solidified roofing (road?) tar (at least that what it appears to be - could be something else). Any tips/tricks for removing this?
[attachment 108469 1949-D_reverse.JPG]
The (Learning) Curve:
I've had difficulties getting depth in my area... deepest object I've found was a pencil ferrule @ 7 inches at a 1940's school. So yesterday, I changed some settings, specifically Recovery: FAST OFF Deep ON (normally, Fast ON Deep OFF), and Gain: 10 (normally 6). Soil in this area is usually rusty iron infested and mineralized (Oregon), hence the Fast ON and lower Gain (... in an attempt to minimize the ever-present falsing).
I think the GAIN setting was the main difference here - there was shallow iron all around this quarter, at least one of which was falsing also. So (I'm assuming) my previous passes were just not being recognized with all the other iron/falsing signals.
But with the Gain at 10, I definitely heard something different - with a wiggle, and a glance at the Smart screen while rotating (pegged at classic quarter position at initial angle; turn 90 degrees right == bouncy, upper-right to left; turn 90 degrees left == bouncy, up and down right side; 180 degrees == iron/falsing).
Dig it... presto!
The trick now is to recognize the falsing from the good signals - AT DEPTH. But I don't believe the higher gain setting is going to help with the falsing!
Anyway, it's nice to have 'punched through' a little bit into a new level - in the ground, and on the learning curve...
SCM
Found this 1949-D Quarter yesterday at about 6 inches.
[attachment 108468 1949-D_obverse.JPG]
The Bad:
This quarter was found in my own backyard - in a spot that I've swept my coil (SE w/Pro coil) over at LEAST 150-200 times this past year. My worst MD nightmare comes true: I'm walking over DETECTABLE valuables with a metal detector and NOT hearing/digging them! Either my settings are/were incorrect to the point that a recognizable signal is not produced, OR I do not understand the signals that are generated. Ugh.
The Ugly:
The reverse (and some of the obverse) is coated with solidified roofing (road?) tar (at least that what it appears to be - could be something else). Any tips/tricks for removing this?
[attachment 108469 1949-D_reverse.JPG]
The (Learning) Curve:
I've had difficulties getting depth in my area... deepest object I've found was a pencil ferrule @ 7 inches at a 1940's school. So yesterday, I changed some settings, specifically Recovery: FAST OFF Deep ON (normally, Fast ON Deep OFF), and Gain: 10 (normally 6). Soil in this area is usually rusty iron infested and mineralized (Oregon), hence the Fast ON and lower Gain (... in an attempt to minimize the ever-present falsing).
I think the GAIN setting was the main difference here - there was shallow iron all around this quarter, at least one of which was falsing also. So (I'm assuming) my previous passes were just not being recognized with all the other iron/falsing signals.
But with the Gain at 10, I definitely heard something different - with a wiggle, and a glance at the Smart screen while rotating (pegged at classic quarter position at initial angle; turn 90 degrees right == bouncy, upper-right to left; turn 90 degrees left == bouncy, up and down right side; 180 degrees == iron/falsing).
Dig it... presto!
The trick now is to recognize the falsing from the good signals - AT DEPTH. But I don't believe the higher gain setting is going to help with the falsing!
Anyway, it's nice to have 'punched through' a little bit into a new level - in the ground, and on the learning curve...
SCM