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Tried my CZ-20 in a local park for deep coins.

J

jabbo

New member
It's my Jersey shore beach machine, works great in the wet salt sand. Used it today in a local 300 acre park that has mild soil, hoping to find any deep coins that my Tesoro couldn't get. Passed up the shallow signals. Got a lot of one-way signals (left to right) that I thought might be deep coins. Cut a 6 inch wide plug and went down 14 inches, still got a high tone signal but no target found. That happened a number of times. Had the Volume at 4, Sens at 8, Disc at 2 - 4, and ground balanced. After almost three hours of getting false signals and some deep rusty square nails I called it quits. Before I dug, the pin-point button verified that small metal was there. Why was I getting all those false signals.
 
I can't run sensitivity higher than between 6 and 7 in fairly good ground without falsing with the 8 inch coil on my CZ-20 or CZ6A. With a 5 inch coil on the CZ6A I can get a little above 7 on sensitivity in some areas. I run with discriminator on 1 and listen to all three tones. If it is high tone I slow sweep speed way down over the target and if it breaks into low tone or alternates low and high, then I am pretty sure it is a nail or piece of iron or rust in the soil from a decomposed piece of iron. If I dig those to see if I guessed right, sometimes all I find is an area of red dirt that, once broken up, no longer gets a reading. On the salt water beach, discriminator is still on 1, listening to all three tones. For me, bottle caps in the sand frequently alternate between high and low tone like nails do on land. (I like Tesoros too ... different animals, different hunting style ... depends on the day and what I feel like doing)
 
Thanks TVR, will try again with lower Sensitivity. My CZ-20 has a 10 inch coil, could be falsing more. Some months ago a poster on this forum said that he would pry the dirt with his digging tool to loosen the soil a little, and by doing that the rust trail gets broken, no longer giving a signal. I did that a few times and the signal did go away. Saved me some digging. Jabbo
 
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