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7 inch concentric squashed EMI for me today

coin-star

New member
I was hunting at a 1920's house that had underground power running right through the back yard to the house. I started with the 7" concentric on the MMK and then switched to the stock 11" DD to cover more ground. I noticed immediately that 11" was WAY more sucseptible to EMI and I could get on the path of the underground power cable AT ALL. My MMK chirped and went nuts.

I switched back to the 7" concentric and was able to hunt right over the power line with hardly a chirp. If you want to hunt a site with heavy EMI, the 7" concentric might be a life saver. Today I found clad, a 1947 nickel, and a 1949 Roosevelt and 1951 Wheatie in the same hole. I also was using 4 Tone in 5khz which I liked quite a bit. That's a nice combination, but it eats battery.

Forgot to mention that I was also hunting with a friends 12 year old son, who was hunting for first time. I marked a few targets for him to dig that I thought would most lilkely be coins. His first target was a 1950 Roosevelt.

-CS
 
Coin Star - that was very cool to let that young man find a good target, WTG! M:twodetecting::clap:y hat is off to you.

BTW - I love those Coin Star machines....

Tony
 
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