Clearly, with the huge amount of interest that is being shown in the after market coils for 7000, it`s obvious that there is a market out there for coils other than 14'' and 19". I don`t take the 19" out much because I have had very little success with it and with my bad wrists it`s just too damn heavy, but Minelab did tell us in the early days of marketing the 7000 that they would be releasing a 11" coil down the track, and now there is another company that nobody has ever heard of making a huge range of coils that are lighter and have so far been very well received by the public.
What`s going on Minelab?
I have a Vaquero with the stock 8"x9" concentric coil. I'm wondering if I should get a DD. There are quite a few out there, for example the Tesoro 5"x10" (stock on the Lobo SuperTraq) and similar size (open structure, though) by Mars and also Cors/Nel. I'm only interested in coin hunting with this detector. Anyone out there with experience care to comment whether or not I'll see (hear!) much difference if I get one of the DD's?
Managed to get two hours in today before rain chased me home with the 17 inch Russian X coil.
Blew me away just how good this coil is ! I purposely picked a small area of State forest that I have flogged for the last 10 years, with all 3 different GPX detectors, with coils from 11-25 inches, the SDC, and even a QED. This spot has yielded many ounces of gold to me from 0.05g up to 33g. I had declared it " dead ", as my last 10 or so efforts with the standard GPZ14 and GPZ19 have yielded nothing more.
2 hours in today, nearly back to the car, and I get an obvious signal. This was slightly downhill from a small patch of small reef gold, in an area that I have literally smashed.
Coil was about 2 inches above the ground because of sticks and clumpy grass. Removed said obstacles and signal firmer. 4 inches in and I am in nice gravel, target now screaming, out pops what turns out to be buck shot. Bugger, but this is from a spot that I have NEVER managed to get a target in !
Moved about 10m along and same thing, another obvious target, once again coil 2 inches over the ground. Dug in and same again, 4 inches down in nice gravel, target screaming louder than the buckshot, out pops what turns out to be an 0.65 gram bit of reef gold ! I'll be buggered, I thought !
Rain then chased me home.
Coil was very sensitive, being able to pick up my 0.11g test piece at 2 inches. I tried knocking the coil against a tree a few times and no bump sensitivity. 17 round weighs the same as the GPZ14. All in all, a fantastic coil. Don't know what the Russians have done differently, but Minelab need to have a good hard look !
Further testing to come when our shitty weather finally breaks.
Monday two weeks back I headed to the spot where I had done well with the 15 x 14 X coil getting 12 bits off an old flogged patch first time going over it with the 15 x 14 coil.
Over Easter Weekend I went back & searched a bit wider with the 15 x 14 X coil. Getting 17 pieces.
Monday two weeks back I decide to try the 10 x 9 coil over the first area I used the 15 x 14 coil. Mrs JW came along for the day.
I parked up in the same spot as the first time & went straight to the spot where I got 4 bits all in a 2 foot square area. High Yield/Normal. Sensitivity on 19. I had hardly put the coil on the ground when I got a signal. Of course I was thinking shotgun pellet. You will see a hole above the coil from my last dig here that the rabbits have dug back out & top left disturbed ground from the previous digs.
This signal was to the left of the coil.
Small gold it was
Not two feet away another very faint signal right up against a tuft of tussock grass. I pushed the grass over with my boot as best I could to get the coil in closer & confirm a signal. Definitely a signal but I hacked the grass out to pin point it better & to get the coil over the top of it & right down on to the ground. Signal improved.
Down a good 6 inches, maybe a tad more.
The tufts of grass are dying off but still pretty stiff for the coil to flatten down. With the 15 x 14 coil I couldn't get the coil down on to the ground among this grass. The 10 x 9 I was able to negotiate a lot better.
I ended up getting 7 bits in this very small area. It was just crazy.
Some quite deep for their small size
I then moved on to another little area & managed a couple more.
A total of 9 before calling it quits & the long drive home.
The piece top right intrigued me. You will notice the sun glistening off one face. It was almost a perfect crystalline pyramid shape. With equal square four sided base terminating four faces at the top pyramid apex point.
9 for just over 2 grams.
Fairly rough reef gold, but damned if I can find the source. I have been trying for 7 years. Cheers
Good luck out there