GP Extreme

[Anonymous]

Anyone give it(GP Extreme) a try. Is this the forum that would match the type of detector it is. Any comparision between this and the deepstar?

 

[Anonymous]

Hey John,
GP Extreme is a pulse machine, and from what I've read is no big improvement over the SD2200 (read Finder's forums for one place, there's a lot of guys using it down under). As for comparisons to the Deepstar, I'm assuming you're using it on the beach, which is where the Deepstar is king. In that environment my guess is they'd be pretty close, although I don't have any experience with the GP to back that up with, just some comparisons between my Deepstar and SD2200, where it was very close, seemingly a bit deeper, certainly more comfortable to use, and much better on the pocketbook, and without a doubt more durable (Deepstar wins in my book).
I'm sure others can chime in with hopefully some user experiences with the GP, but since it's new I think that's limited.
Enjoy,
-J

 

[Anonymous]

Thank you Jeff for the info. What interests me about the GP Extreme is the capability of disc. out the surface iron which can get in the way of cache hunting. No beach hunting here. If the Deepstar goes deeper...great.!Less expensive Great again! The only trade off would then be the surface elimation. Does your SD2200d's discriminator work as advertised?

 

[Anonymous]

Hi John,
When I tested the SD 2200 for LT I found it would discriminate out the surface iron. However, smaller deeper iron objects would come through as good many of the times.
I haven't tried the Deepstar, but did recently pick up a used Goldscan to experiment with. This is one of Eric Foster's earlier models. I just recently ran a head to head buried target test with the Goldscan against the SD 2100 which I had readily available. The little Goldscan would match the depth capabilities of the SD for all practical purposes. Both were equipped with 11 inch coils and I was checking depth comparisons for 1/8 oz to 1/2 oz nugget sized objects.
One real plus for the Goldscan is it would ignore a couple of the different types of hotrocks that the SD picked up.
I bought the Goldscan to experiment with to see if it would work for nugget hunting. I now know it will, but I will have to be retuning it frequently. This is something I can live with.
I cannot speak from personal experience of the Deepstar, but this little Goldscan kicks butt.
A while back, I ran a comparison of the SD 2100 and the SD 2200 and didn't see much difference.
From what I understand the Deepstar has greater deth than my little Goldscan and has autotuning, something I wish my Goldscan had.
Bottom line, I am impressed with Eric Foster's machines.
Reg

 

[Anonymous]

Hi Reg,
I will photograph a Goldscan board and mark in where to fix the extra components for autotuning. Basically it is just adding two resistors, but you may have to experiment with the values to get the best retune speed for your location.
Think I might re-introduce the Goldscan in a Deepstar box.
Eric.

 

[Anonymous]

Eric,
I would sure appreciate it if you would send me the autotune info.
I am really impressed how well the Goldscan picks up nuggets. I have been hunting nuggets for over 14 years now and am excited to give the Goldscan a try. I purchased it to experiment with in hopes it would work. My plan is to let my dad use it because it is so much lighter than his SD and it would be much easier on his back. I didn't think he would part with the SD, but after seeing how well the Goldscan did during the testing, I am sure he will be willing to put the SD down and use the Goldscan. He really liked the pinpoint probe also.
As for the possibility of a Goldscan design in the Deepstar housing, it sounds like a great idea. Let me know when they are out.
One question regarding the Goldscan. What is the Auto function? Is it a really slow autotuning?
Thanks again,
Reg

 

[Anonymous]

GP seems to work best with monos and wont discriminate with these coils. With DD, discrimination is pretty much just near the surface. Only good for surface trash.

 

[Anonymous]

I TOLD YA REG. IT WAS DEEP.

 

[Anonymous]

Hi Bob,
Yes the Goldscan definitely goes deep. Picks up very small gold extremely well also. One feature that is really great is when in the ALL mode with the ground balance at min, the detector has great depth and still ignores most magnetite hotrocks. Being able to ignore them is extremely important.
I just talked to a good friend in AZ who traded off their GP Extreme because it would pick up hotrocks when using the mono coil. He hunts in the same area I do, so we know the hotrock problem very well. I am looking forward to taking the Goldscan down to that part of the country.
As I mentioned earlier, I can live with having to retune if necessary. The magnetite hotrock problem is a different story. The area where I hunt is a desert terrain, very low, gently rolling hills. One hill will have a lot of hotrocks, the next won't. No basalt, so that is not a problem. Ground mineralization is not extreme in most areas. Therefore, since the Goldscan ignores most of magnetite rocks, it should work very well. I have hunted several areas in AZ and the general terrain may change, but the ground conditions are quite similar. I have only run into a lot of basalt a couple of places and it has been on the fringe of the better gold hunting locations.
Thanks again Bob.
Reg