here are some tips I have collected
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It loves rings, ground balance doesn't work at least not in Florida. I have talked with the tech's and they say run the knob in the halfway position and you will be find. I run it on the preset position or a little higher if I can but pre set usual works fine. I always run in all metal mode when I hit a target I first look at my lights if I am shallow enough to see them. If its red I move on its iron and it's never wrong. If its yellow I will switch to disc. mode, if the sound just nulls move on it also junk battery, bobby pin, fish hook. If its yellow and you still get a good tone dig yellow will also be your gold rings. If it green its usual a coin or a silver ring.
Batteries last a long time up wards of 30 hours which is nice. A straight shaft on that model will help keep the floating coil down with out a lot of strain.
I can almost tell you everything I am about to dig before I dig it so you can learn the machine by paying attention even though I dig all good targets unless I am after a lost gold ring.
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One way to max your gold ring count is to leave all the low tones and high coin tones alone and just scoop the mid tones which are the nickels, pull tabs and gold rings. Time spend digging pennies can better be spend swinging looking for the mid tones
The best way to carry your Beachhunter is to either hip or chest mount the machine. You should have received a yellow and black nylon pouch with your unit, to use it unhook the control box from the handle and slip the control box into the pouch, secure it with the plastic clasps. Slip a belt through the loops to carry it at your waist. To chest mount you will need an additional strap to hang around your neck.
To get the best depth with your unit, you need to run it on as high of sensitivity as you can. I am lucky being in South West Florida that I can typically run at MAX sensitivity in the dry sand and just above the preset in the wet without getting false signals.
One of the main issues with the BeachHunter is that the coil floats, there are several ways to stop the coil from floating including attaching a sand-filled sock to the lower rod, using ankle weights, etc. Since I hipmount the unit the floating coil is not really that big of an issue, additionally I do a lot of regular beach hunting with the unit so the lighter coil is nice in that regard.
Make sure to clean your unit thoroughly after submersing it in salt water. Taking the time to do this will keep your machine looking like new for a long time and protect any parts from the corrosive effects of salt water. Make sure to separate the lower rod and rinse the inside of the whole shaft assembly. After rinsing and drying the control box, remove the battery compartment plug then rinse off the plug and dry.