Hey Neo, the coil that I told you about, 10 inch eliptical, is the only other coil that I would use on the GB Pro if you are detecting for gold. Coins, relics, that is a different thing. The Bug is my only weapon for shallow ground and exposed bedrock. This goes for tiny crumbs to larger nuggets. I have found crumbs to four inches and a six dwt nugget at twelve inches. The six just happened to be on its belly. If you are wanting to get the in between then you need to have two detectors and one should be a PI. You will not cover all ground effectively without both a VLF and PI. I have heard all the talk about the new 5000 and the tiny pieces people are are starting to find with it and I would say that these people need to learn how to operate a detector. I have been finding grainers and smaller with my 3000 and a eight inch coil for years. I am sure that the 5000 has many improvements over my unit but to me that is not one of them. This is just my opinion. You must learn your machine, VLF or PI. I will also tell you that almost all the gold I have detected over the years in the Clear Creek area could have been found with a VLF. In fact much of that gold was found with a GBII, Eureka Gold, and Tesoro. I am now using the GB Pro because it a very good VLF with newer technology. I am finding more gold again because the discrimination works and this unit will punch through mineralization better than what I had before. However...
However, I still go over some ground with the PI. There has been a long standing argument that a VLF will hear some stuff that a PI will not. I am not a technician but I have put from fifteen hours a week to over forty hours a week for the last twenty or so years on the units mentioned above. Yes a VLF will hear some nuggets on edge better, will hear some specimen pieces in quartz better, will hear some irregular shaped pieces better and will find sub-grain gold better. The break is that my PI will find a few sub-grainers that are extremely shallow but will go twenty or so inches on a two dwt nugget in hot ground that my bug cannot come close to.
One other item is that when you get used to a coil and then change it out you are basically starting all over as far as what you are hearing. I have been doing this a long time and I really like to get the optimum coil for the job and stay with it for this reason. I prefer a seventeen inch eliptical mono on my 3000. It is surprising how many tiny pieces I hear at depth with that thing. Some people may disagree but you will get a different signal when changing coils. The response time may be slower or quicker and there is a difference.
Another item is headphones, when using headphones you are going to get a distorted signal opposed to not using headphones. I dont care what anyone says you have to have a good set of headphones that suits your individual hearing. Yes, you want a quality set of headphones that offers all the good stuff and you will pay for that quality but you better make sure you have the ears to hear it otherwise it is doing you no good whatsoever.
I would stick to the five inch coil and listen to it, it does work, it was optimized for the GB Pro. Enough of my whining today, TRINITYAU/RAYMILLS
) but I saw something on youtube that has me interested.
