Chickenwing said:
I am considering buying a Nel Sharp coil for my Omega. I use the stock coil now but feel I need better separation in some areas. Any feedback would be appreciated.
By using the 'stock' coil now are you referring to the elliptical Concentric coil, or did you get your Omega with the 11" BiAxial coil?
Have you tried other Teknetics factory coils, or just jump to the after-market NEL coils?
What types of sites do you search where you feel you need "better separation?" Are you hunting in modern playgrounds with modern type trash, or do you search older sites and what type of trash is most abundant, iron or non-iron?
Personally, I haven't worked, or seen, a 'Sharp' coil, but I have used the Sharpshooter and compared it with factory search coils. Perhaps I take a little different approach when I set out to evaluate both detectors and search coils because I like to have one or two coils that work well, but I also like to have more than one detector and coil set-up because there is no such thing as a 'perfect' metal detector or a 'perfect' search coil.
There are, however some very decent detectors and very good search coils to compliment what the detector offers in the way of performance. I like the Omega, personally finding it the best of the FTP products for me and what I like to do and use it for.
I found the Sharpshooter coil to
appear to have a more rugged build quality, externally, and it seemed to work okay. I also didn't like the cheapo decal or the wedgie coil/rod mount design. The coil, however, did work. Now, most readers know I am not a big fan of DD coils, and that I find the 11" BiAxial to be cheap looking, feeling, kind of ugly, and have never really enjoyed the performance I got from it. Honesty is the best policy, so I'll continue to add that I found the 5X10 DD coil to be a better looking, better feeling, and better performing coil
for me than the 11" BiAxial [size=small](DD)[/size] coil.
Of the Teknetics coils I used on the Omegas, I preferred the 8" round Concentric coil for general day-to-day hunting in average condition areas, even though the stock 10" Concentric elliptical coil is close to the same performance in some ways. But most of the time I plant myself in the heart of ample old-site junk. Most typically it includes the higher-conductive little zinc caps, some occasional copper washers or rivets or buttons, but generally an over-abundance of iron-based debris.
Nails are the biggest offender, and dealing with a lot of unwanted junk calls for a good detector with quick-responsiveness and good Discrimination processing and recovery. Naturally, the use of a better search coil in such conditions is important, so I concentrate on that evaluation with every detector in my personal arsenal, as well as with various search coils.
Usually, my preferred search coils are Concentric design, and I hunt in trash and want separation as well. I match the coil design and size with what level of performance I get out of the detector, and there are times when I DO opt for a Double-D search coil. In the case of the FTP products, it is usually because they don't offer a smaller-size Concentric coil, leaving me no option but to pick a DD. I have found that it is sometimes a limited coil pick due to the detector designer's coil preference and not a marketing choice to give consumers what they want.
In the trashiest sites when I need the best 'separation,' I prefer the 5" DD coil over any other DD offered that I have used. It has served me well for 4½ years in some touch littered places. When I evaluated performance of the larger-size coils, mainly DD designs, I favored the Teknetics 5X10 DD coil for fit, balance, and field performance over the Sharpshooter coil. I also didn't notice that much difference in EMI issues, and that really depended upon location.
For dense trash I am satisfied that my 5" DD is a fine pick to complement the 8" round Concentric for lower-trash levels. I might add one more coil back in my coil arsenal in the future, but I am not sure if it will be the 5½x9¾ Concentric or the 5X10 Double-D. I think I'd likely take them in that order, but for best separation in the ghost towns and homesteads I used to evaluate performance, the 5" DD worked the best.
Just my opinion to add to others. It's really going to vary, too, because we each have our own description of what trash levels are or what 'separation' means and in what environment.
Monte