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5.75 coil first field run

Fish N Chips

New member
I headed out to the local park to try my new 5.75 coil. I ground balanced my Eldorado and started swinging. First thing I noticed is the coil is small and makes me go slow to overlap my swings. You can really dissect a small area with it. It did great right up against the play structures and a big metal train the kids play on. I found several dimes and pennies in the bark chips, there is no mistaking a coin with my Tesoro. I find if I ever question a signal it is almost always trash. Deepest coin was about 4 inches in a wet portion of the tot lot. It did very well with discrimination and separating trash, although this park is not very trashy unless you count cigarette butts.

I headed onto the turf. I chose to limit my digging as the ground is very dry right now and I am just getting over a broken rib. I walked to some lusher grass spots to avoid killing the sod. I noticed my depth was very limited, not getting coins over 3 inches deep. It could be a lack of deep targets where I was hunting, but I reset my ground balance and turned my sensitivity into the red. My depth was still only 3 inches. I think it is likely due to the dry conditions and our heavy red clay soil (Tehama County concrete). I have also noticed a big reduction in depth in my larger coils as the summer has gone on. We have not seen rain for 5 months now. It is the longest hottest summer in quite a while for us. Heck, I was digging targets at 6-7 inches on my desert trip a few weeks ago with my 9x8 coil.

I really liked the small coils stability and ability to turn up the sensitivity that high without falsing. The separation with targets was great. I found a coin spill with 4 quarter and some pennies and it gave a beep on each coin. I did notice I got a slight double beep on surface coins, but that may be from having the sensitivity so high. I can really see this working out well at my old spots and around the picnic tables and benches where bottle caps and pull tabs abound. With its discrimination ability and target separation it should really work well picking out good targets.

The hunt was fair. I found 2.78 dollars in change, most surface clad. I was only able to hunt a few hours before the heat drove me home. I can not wait for fall and more field trials with my new coil.
 
Nice going! A double beep on a surface coin is a good thing. The double beep lets you know that it's a surface target. The next time you're over a target keep raising the coil until the signal disappears. If you're digging targets that are only 3 inches deep but you're able to raise the coil several inches above the ground above the target and still get a good signal then you know that the detector will go deeper if there are deeper coins.

tabman
 
Great tip Tabman. It did work lifting the coil as I was checking some targets for soda cans. I could lift the coil 2-3 inches before the signal went out, telling me it was a coin. I am sure it will get 5-6 inches in the right conditions. It goes much deeper in my test garden, but that is watered grass. It definitely could be just a lack of deep targets where I was. I know I am not the only detectorist hitting the local parks here. I am still trying for some old silver, some of my parks go back to the 1900s. I know it is there, I just have to get my coil over it.
 
Fish N Chips said:
Great tip Tabman. It did work lifting the coil as I was checking some targets for soda cans. I could lift the coil 2-3 inches before the signal went out, telling me it was a coin. I am sure it will get 5-6 inches in the right conditions. It goes much deeper in my test garden, but that is watered grass. It definitely could be just a lack of deep targets where I was. I know I am not the only detectorist hitting the local parks here. I am still trying for some old silver, some of my parks go back to the 1900s. I know it is there, I just have to get my coil over it.

I have yet to find any shallow silver since I re-started detecting 1.5yrs ago. Most your pounded PUBLIC silver will be in 6-9" (or deeper) range. Still some out there but you really have to go deep for the most part......jmo
 
I have picked up a few silver crosses and rings at 7 inches right after a rain, but nothing deeper except for large iron and big targets. I got a nice 1860 curry comb at 12 inches but that was in soft sand and it was pretty large. I think 6-7" is likely my max depth with my machine for coins with the 9x8 coil. I am sure the 5.75 will be a bit less in depth but better in the trash and iron nails. I eventually may have to look into a larger coil or deeper machine to get more depth. I am happy with the depth for the most part. Digging deeper than 6" is a lot of digging in a park. At my homestead spots I use a trenching shovel set like a mattock. It makes quick work of a hole. I do not think it would go over well at the park though! I need to play around with the all metal mode on my detector more, that may get me a bit more depth....maybe. I love the all metal mode when working in the thick sage brush and along foundations, I just don't use it much at the park.
 
I think most of the silver coins that are left in pounded public parks are being masked. Going really slow with a small coil should be productive.

The Vaquero with a 5.75 inch concentric coil is super deep and does a great job at unmasking targets. Set the discrimination low and start digging.

tabman
 
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