Coil Question
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Thread: Coil Question

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  1. #1
    us
    Sep 2013
    Ennis, Tx
    Fisher F2
    7
    Metal Detecting

    Coil Question

    I received my new F2 and it came with a extra 4" coil. In what type of situation would I use this coil instead of the 8" coil? Any advice will be appreciated. Thanks DRS.

  2. #2
    us
    May 2013
    Northwestern WI
    Garrett AT PRO (Current) Minelab Etrac (Current) Garrett Pro Pointer Sampson 31" Digger Fisher F2 (RIP)
    425
    184 times
    Metal Detecting
    That's a sniper coil, used to get into super trashy areas, next to fences, tough to reach areas, and anywhere your bigger coils can't go. I used to have an F2, awesome little machines with a perfect weight. Remember though, smaller coils don't go as deep. I usually went with the 8, but you might need the 4 in some situations. I always wanted the 11 inch DD, but I had to send my F2 back before I bought one. You should like it. Good luck!

  3. #3
    us
    Aug 2013
    Texas
    Tesoro Silver Sabre II, Tesoro Tejon, Minelab Sovereign GT, Garrett AT Pro Nokta Fors CoRe, Garrett ATX, Minelab GPX 4500, Minelab ProFind 25, Garrett Carrot.
    212
    98 times
    All Types Of Treasure Hunting
    Think of it like this. The larger coil, in a trashy area, can hover over many different metal objects at one time. Your machine may be "tricked" into thinking that the quarter lying near a piece of iron, is just a piece of iron. With the smaller coil, there's less of a chance of hovering over multiple targets, and your machine can bounce a signal off of each, individually.
    "If I had my druthers, I'd pull a cork and jaw with you." ~Rooster Cogburn

  4. #4
    us
    Bill Jones

    May 2007
    Lewiston, Idaho
    Multiple Tesoros and Whites
    1,767
    688 times
    Metal Detecting
    You'll be surprised how often a small coil is useful. Much more so than an extra large one IMHO>
    luvdux

  5. #5
    us
    Jun 2012
    Evensville, Tennessee
    Whites 5900, Fisher 1266x, Tesoro Eldorado, Tesoro Silver Sabre, Whites Eagle Spectrum, Teknetics G2, Teknetics T2, Vibra-Probe 580
    2,368
    1206 times
    All Types Of Treasure Hunting
    Quote Originally Posted by drsmithtft View Post
    I received my new F2 and it came with a extra 4" coil. In what type of situation would I use this coil instead of the 8" coil? Any advice will be appreciated. Thanks DRS.
    Many years ago one of my hunting buddies convinced me to try a sniper coil. He was also a dealer. I had previously "hunted out" what I still feel was the best yard I have ever hunted. My first large cents, indian heads galore, seateds and so on. The likelihood of getting a real keeper was so high that I made my last few trips and came back with NOTHING. I mean I felt like I had hunted it completely out. Also tried with a new detector and was able to pull a few more. Went back to the heaviest concentration areas with the little coil as soon as I got it and it was like old coins had grown back. Found around 20 keepers my first day. In the more open areas it was of little help. In the trash it rocked. Remember one thing on the little coils as well; it is true they get less depth but it is not proportionate. A 4 inch coil is not going to cut the depth in half over an 8 inch. In my opinion you loose about 20%. The test id did was years ago and some of the more knowledgeable folks on here may give you percentages that are more accurate than mine. Good luck.
    luvsdux likes this.

  6. #6
    us
    Sep 2013
    Ennis, Tx
    Fisher F2
    7
    Metal Detecting
    I will try the sniper coil out at the local lake swimming area. the water is way down.

  7. #7
    us
    Aug 2013
    Texas
    Tesoro Silver Sabre II, Tesoro Tejon, Minelab Sovereign GT, Garrett AT Pro Nokta Fors CoRe, Garrett ATX, Minelab GPX 4500, Minelab ProFind 25, Garrett Carrot.
    212
    98 times
    All Types Of Treasure Hunting
    Good choice!
    "If I had my druthers, I'd pull a cork and jaw with you." ~Rooster Cogburn

  8. #8

    Mar 2007
    Salinas, CA
    Explorer II, Compass 77b, Tesoro shadow X2
    13,667
    10061 times
    Banner Finds (4)
    All the answers you've gotten here are good descriptions of the plus sides of smaller coils. Just be aware that their downside is, of course, less depth. That's the trade-off

    Conversely, yes, the larger the coil, the deeper it goes. However there comes a point of "diminishing returns" on this: At a certain point of increasingly larger coil sizes, you no longer get coin-sized objects any deeper. You only get larger objects deeper. That "point of diminishing returns" on most detectors is about 8 to 10". Hence that is the stock coil sizes of most detectors, since that optimum for coin-sized objects (which is most often the target sizes we md'rs are angling for).
    Cycluran likes this.

 

 

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