Dances With Doves Posted June 25, 2020 Share Posted June 25, 2020 The chain I am testing is the type a Fbs machine can 't hit or barely gets it . An 8 gram 20 inch 18k yellow gold rope type chain.The xterra ground reading for my testing site is about 24,000. At 0-10,000 =mild ground,10-100,000= moderate ground,100, 000-1,000,000 =hot ground.The ground phase is about a 8.At a reading over 20 you should use a concentric,under 20= dd coil. That is for xterra machine which is single frequency machine that switches frequencies.I tried the 48 kz. Gmx first an it hit the about 5inch deep chain with no problem and above 50 id numbers and I could raise the coil about 3 inches.That is very good.I then tried the Nox in pk.1 and that was a no go.I then tried pk.2 in multi freq. and 20 sens. and got a nice 1-2 id in mulit tone.I tried 20kz. in pk2 and got average hit with up average id.I tried 40kz. and got a better hit with more solid up averaging in the id.I then went to gold 2 mode and mulit freq. and 20 sens. and got great hit with solid id. In 20 kz. in gold mode it did pretty good with up average numbers.In 40 kz it hit harder then all because I could crank sens. to 24 with up average numbers that would make me dig. With this machine you could hunt silver with the best of them then change modes and hunt tough gold with the best of them.I tried the xterra with the 9inch 18kz .concentric and in coin mode I got a wrap around signal that might make me dig.In prospect mode I got good soft signal with 2 inches of air over target to spare. The test for Nox is with 11 inch coil. The Gmx had 6 inch concentric. 4 1 Link to comment Share on other sites More sharing options...
Dances With Doves Posted June 25, 2020 Author Share Posted June 25, 2020 I tried the 6inch 18kz. coil on the X- terra in coin mode and got a wrap around signal that might make me dig on the rope chain.In prospect mode I got a nice soft signal and was able to lift coil about an inch before I lose the target.I tried the 8inch mono on the infinium and that was a no go. Link to comment Share on other sites More sharing options...
RickUK Posted June 26, 2020 Share Posted June 26, 2020 Interesting observation,small chains are notoriously hard to find with a detector,since we have been in lockdown mode for many months i have been testing various detector/coil and freq combinations on small gold items basically trying to increase the odds in my favour.The winning combination thus far that hits not only on small gold items and small gold coins like celtic 1/4 staters has been the Deus running hot with the elliptical coil running top of the shop 80khz,of course you wont get the depth of say running it in lower freq's but as most of my everyday finds are mainly in the top 6-8'' the elliptical coil is still my preferred coil of choice and can also run the sensitivity up high as well. For pasture use or backup detector then the Equinox still wins hands down,but still this combination although pretty deep still as yet has not take my everyday use crown off the Deus with that HF elliptical coil. Of course not everyone would/will agree on using such a high freq but i use what suits me best and it also ticks the lightness box as well for me,on one of the roman sites that i have detected with a club for years this site is phenomenally high in mineral content and possibly the hardest site that i have detected that is when the TDI Pro with the 9x5 folded mono coil earns its keep. 4 Link to comment Share on other sites More sharing options...
2Valen Posted June 26, 2020 Share Posted June 26, 2020 Good read on your findings and I will keep it mind the next time i get to go hunting. Thanks for the information and the time it took to do it. Happy hunting! 2 Link to comment Share on other sites More sharing options...
Dances With Doves Posted June 26, 2020 Author Share Posted June 26, 2020 I went and grabbed my 18k white gold chain. This is about 4 grams and 15inches long.It is only about 1mm wide that has 2mm white gold balls every inch and a half.I buried this very tough target at about 5inches.I grabbed the Gmx first with the 6inch concentric.It hit this target good at 1 angle with a soft hit with not much room to spare, but at other angles there were more 1 way hits or weaker hits.Still I could use pinpoint mode to get this target too.I then tried the 11 inch coil on the Nox in pk2 plus the gold modes.I have junk about 12 inches away and in all the ways I tried before could not get a confident hit that I knew was the target and not false signal or junk from nearby.I then tried X-terra with 6 inch 18kz dd coil and got barely a sound at one angle and others could not tell or no signal.GMX best in this situation by far.Getting these types of tough targets gives you bragging rights in my book.As hard as it gets when it comes to being successful in the sport of metal detecting.You need patients and a lot of energy. 2 Link to comment Share on other sites More sharing options...
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