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I have to admit to a certain amount of satisfaction having made my first finds with a coil I designed and built myself, what a great feeling.
I took my custom 18x13 inch coil out for a test run tonight at a site that I spent months detecting to death. This is a site I gave up on after searching for many hours without finding even a paltry wheat but the site is notorious for deep old coins so I thought it would be a good place to test depth and performance compared with my other coils.
It didn't take long though the first find was more about target seperation than depth, I found this merc right up near a full size pull tab with tail still attached. It seems this dead zone between the center and outer edge helped quiet the pulltab while the center was over the silver. Where as with the stock 10 inch coil the pulltab was probaly hitting on the outer edge when over the coin masking it. Depth was about 7 inches plus grass. The grass was long, 5-6 inches so I'd say it squashed adding another 2 inches.
I next found a deep wheat that was corroded like most are at this site, then finally another deep green one which I was quite surprised to find was a 1875 IH when I rinsed it off at home. Three coins in 60 minutes on a single line I have probably detected 3-4 times, I'm a happy coil builder tonight.
I took my custom 18x13 inch coil out for a test run tonight at a site that I spent months detecting to death. This is a site I gave up on after searching for many hours without finding even a paltry wheat but the site is notorious for deep old coins so I thought it would be a good place to test depth and performance compared with my other coils.
It didn't take long though the first find was more about target seperation than depth, I found this merc right up near a full size pull tab with tail still attached. It seems this dead zone between the center and outer edge helped quiet the pulltab while the center was over the silver. Where as with the stock 10 inch coil the pulltab was probaly hitting on the outer edge when over the coin masking it. Depth was about 7 inches plus grass. The grass was long, 5-6 inches so I'd say it squashed adding another 2 inches.
I next found a deep wheat that was corroded like most are at this site, then finally another deep green one which I was quite surprised to find was a 1875 IH when I rinsed it off at home. Three coins in 60 minutes on a single line I have probably detected 3-4 times, I'm a happy coil builder tonight.
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