The place I've been river prospecting recently is only showing me very small flakes of gold (so far). They are so small in fact that even the SDC can't pick them up. Yesterday my Garret Pro Pointer arrived and that also sees nothing when I pass it across the vials. Even some of the quite big flakes that I found a while ago in Scotland.
So I got to wondering, what is the minimum flake/nugget size that can be detected?
Could anyone with an SDC (or even a Pro Pointer) post and tell me their results?
By Steve Herschbach
I am not sure if anyone else is doing this (it appears to be a Coiltek sale but no mention on their website), but Chris at AZO is advertising Coiltek coils for the Minelab SDC 2300 at 20% off for the rest of the month or while supplies last.
20% OFF the following premium Coiltek products:
• 10x5 Gold Extreme: WAS $295 - NOW $236
• 11" Gold Extreme: WAS $315 - NOW $252
• 14x9" Gold Extreme: WAS $315 - NOW $252
• Gold Extreme SDC Accessory Pack: WAS $67 - NOW $54
First time out with my new SDC and the damn thing shorts out every time I set it down or bump it? Then it starts it's warm up all over again and I continue to hunt until I gently bump it or set it down again? Seems to have got better towards end of 4 hr hunt where I only dug about 35 targets (no gold). It might be the batteries not making good connection but I did have the trap door completely shut. Anyone else ever have this issue before with the SDC???? Hate to have to send it in...…
Well, my Son did it and turned up with a SDC in exchange for my 5000 for Easter. Went off to try the SDC, left him with Z to compare with 5000 and new age coils, he was fairly impressed with performance of 5000 with the Elite 14" but in using the Z to compare he is now spoilt and talking Z Z Z Z only. Suspect the 5000 is history, regardless that the new age coils have increased the performance of the 5000, the stability of the Z has swung him.
The SDC, it is super stable and a small piece magnet, good fun and will complement the Z. It is the small coil gold detector for those pieces around boulders the Z just can`t get at, plus for those shallow pieces that recovering is time consuming for the Z.
Been reading a lot about the new Coiltek, Nugget Finder & now Detech coils of late. I haven't had much to do with any of these but have detected a small area immediately after 2 x GPX4500 with the Coiltek Elite 14" mono attached. Although not an exhaustive or scientific test the end result was I got 8 x subgram nuggets from the area with the SDC & the 4500's nothing. 2 of the subgrammers came from adjacent to their scrapings so they knew something was there but was still iffy enough to walk away from. I keep hearing or reading how these coils are transforming GPX's into SDC's or even GPZ's but this short "test", for want of a better word, put some doubts in my mind.
I've got no doubt that there is improvement in the new coils in how they enhance the target information or audio response of the detector through better windings etc. but I'm not entirely convinced it's as substantial as some make out. My thoughts are it may be about 10% performance improvement (every bit does help regardless) & 90% of a placebo effect i.e. you buy a new coil excited by the possibilities of it's performance, you regain some enthusiasm & become more positive in approach even detecting more carefully + with more purpose - then when you find gold of course it's the new coil that done it right?
Another thing that has me scratching my head is how excited people are about them finding very small gold. My smallest bit with a GPX5000, fine gold & standard 11" Minelab Commander mono coil was 0.03 of gram (I think about 0.46 of a grain) so they have always been capable of doing it even with an unfashionable coil (but still a good one).
Like I said I'm not doubting that there are definite performance improvements, much like the introduction of litz wire, but I do believe a lot can also be attributed to a refreshed or reinvigorated enthusiasm too.
New detectors could also have a very similar affect on us. What do the experts reckon?