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Impact Wish
Posted by: Trashfinder
Date: October 01, 2017 01:39PM
Found a sweet 1906 dime at 9 inches with the Impact and small elliptical coil in an extreme trashy area.... i hunt those places often..... I had iron level at 1 so not to overwhelm a good tone. On a scale of loudness of 1-10 , 10 being load i got about a 3.5 tone, very repeatable and solid 84,85 ID and ended up with the dime. But this area is littered with screw caps and round can tops and bottoms and most of them are 3 inches or less. Some targets are so close an inch means the difference of hearing them or not. I would like to have a feature where i could not hear any tones that were of a certain level and up. This way i could just focus on the fainter signals and not have to deal with the loader shallower ones. I know someone will say just disc out,,, but you lose depth and i run with zero disc on purpose, but to have a disc based on tone decibel level would be sweet. Like they have set the iron audio where you can set the level you want to hear.

avatar
Re: Impact Wish
Posted by: Tom Slick
Date: October 01, 2017 07:03PM
Like the older Tesoros with "Surface Blanking"?



Arizona
42 years detecting, ex White's dealer.
Current Detectors:
Nokta Impact
Makro Racer 2
Makro Gold Racer
White's DFX x 3
Tesoro Tiger Shark
Minelab Sovereign GT
Fisher F19

Re: Impact Wish
Posted by: Trashfinder
Date: October 01, 2017 08:29PM
Ya just something based on tone strength no on ID or any other process. Should be real simple to do.

Congrats on the find, but ... forget the wish.
Posted by: Monte
Date: October 04, 2017 05:16PM
Quote
Trashfinder
Found a sweet 1906 dime at 9 inches with the Impact and small elliptical coil in an extreme trashy area.... i hunt those places often...
A nice find, to be sure, and both the Impact and small 4X7½ DD can make a great team. Like your find, I have also located several deeper-than-anticipated coins with that coil. I like it for some urban Coin & Jewelry Hunting around trashy picnic areas and similar sites that also have metal structures.


Quote
Trashfinder
I had iron level at 1 so not to overwhelm a good tone.
I keep my Iron Audio Volume at '2' for the same reason, and at times I do drop it to '1' if things get too annoying. It's a nice feature to have on my Impact and Relic devices. :thumbup:


Quote
Trashfinder
On a scale of loudness of 1-10 , 10 being load i got about a 3.5 tone, very repeatable and solid 84,85 ID and ended up with the dime.
Which search mode were you using? Other settings, such as Gain?


Quote
Trashfinder
But this area is littered with screw caps and round can tops and bottoms and most of them are 3 inches or less. Some targets are so close an inch means the difference of hearing them or not.
Round can tops and bottoms? Are you referring to old, rusty can parts, and do you mean they are about 3" or less in diameter, 3" or less depth locations, or 3" or less distance from a desired target such as a coin?


Quote
Trashfinder
I would like to have a feature where i could not hear any tones that were of a certain level and up. This way i could just focus on the fainter signals and not have to deal with the loader shallower ones. I know someone will say just disc out,,, but you lose depth and i run with zero disc on purpose, but to have a disc based on tone decibel level would be sweet. Like they have set the iron audio where you can set the level you want to hear.
This is a 'wish' that many have had and that some detector makers have tried to achieve which just doesn't seem to work out. The best thing is for the detector operator to select the best detector, coil, search mode and settings and use operator interpretation as best they can.

One way to try and accomplish a method of ignoring some targets is by using Notch Discrimination. It comes with a few problems, however. One is that many desired targets share a similar or very close conductivity with unwanted junk targets ... and visa-versa. Another problem with Notch Disc. is that Discrimination, especially selective notching, doesn't work to the full extent of the detection range.

Another method is to try and distinguish certain targets based upon their Audio Tine if using a multi-tone audio classifications, but again, problems arise. Some unwanted targets sound good, and some desired targets can sound bad, especially if they are positioned at an odd angle, too deep, or associated too closely with a nearby target. The same issues are associated with Visual Targets ID as they are with Audio Target ID, where good targets can fib and suggest they aren't, and some junk targets flat out lie and make you believe they are good.

One more method, and the one that I do employ more often, is the use a very Modulated Audio response. So many detectors made today have a Saturated Audio which makes this skill difficult, but with a good level of Audio Modulation (where shallow targets sound louder and deeper targets sound weaker and other targets reflect a diminishing audio strength based upon their distance from the coil) you can learn to audibly distinguish many coin-sized targets 'depth' based upon the audio signal strength. You can also learn to distinguish larger-than-small / larger-than-coin sized targets by comparing the Modulated Audio response along with some easy sizing-and-shaping of the located target.

Do one or more of these three methods work? Yes, they all can, to a degree, and based upon the individual's skill, the detector used, and the coil and settings that are also chosen for a particular site. But in the end, there is no 'perfect' detector, nor is there a guaranteed 'perfect' way to achieve all the shortcuts we would like. It just can't happen.

Monte



"Your EYES ... the only 100% accurate form of Discrimination!"

Stinkwater Wells
Trading Post

Metal Detector Evaluations and Product Reviews
'How-To' help for Coin & Jewelry Hunting, Relic Hunting and Useful Techniques.

My Regular-Use Detectors:
Nokta: Impact, FORS Relic and FORS CoRe
Tesoro: Vaquero, Silver Sabre µMAX and Mojave
White's: MX-7
Note: Detectors are listed alphabetically by Brand, and chosen as desired based on search site conditions.
Additional search coils. mounted on spare lower-rods, are on-hand in my accessory coil tote.
Pinpointers: Using Nokta and Makro Pointers.
Headphones: Using White's Pro Star w/'tank style' ear cups.
Recovery Tools: Using White's Ground Hawg Shovel and DigMaster digging tools.

*** All working well today to make memories for tomorrow. ***

monte@stinkwaterwells.com .. or .. monte@ahrps.org
(503) 481-8147


Re: Impact Wish
Posted by: Trashfinder
Date: October 04, 2017 11:03PM
Monte, i had been using Di3, i switched to VLX1 when i got the coin. i had Gain at 85, Iron at f1, no disc, no notch, tone break 25, audio at 30, 14 freq. This detector with that coil is so good ! When i pinpointed and it was bouncing between 8 and 9 inches i was thinking wow! And what was crazy was the ID was solid not bouncing just 84,85 only two numbers and the tone was so sweet that i was talking to myself saying now i might have something sweet here. This is a wonderful detector.

There are many bottle screw caps, i found can tops and can bottoms (aluminum type) and some whole cans, most of the trash is in the top 3 inches... the guy that owns the old house lot warned me that dirt from the creek area had been pushed up and spread out over the lot and it was trashy he said.
I was using another detector i will not name for courtesy reasons when i found all the trash stuff, it is a newer release that i am not very impressed with. The larger can top and bottoms and whole cans will overload with the Impact and very easy to determine not a desirable target.

What i was really thinking is that it would be nice to just reverse the audio response so that the deep targets are loud and the shallow ones faint,,, i would love to be able to go through that site just having those deeper sweet signals just blast my earphones and all the shallow targets even desirable stuff be faint.

I was also working slow because of the trash content being heavy, a lot of iron there too.

Trashfinder, thanks for the reply and clarifications.
Posted by: Monte
Date: October 05, 2017 01:17AM
You mention the 'Overload' feature, and that is one of the functions I like on my Nokta detectors. To be honest, depending upon the site environment and the amount of over-size and/or shallow junk present, I actually prefer the Overload Audio of my FORS CoRe's, 2nd would be my FORS Relic units and then my Impact. I did wear my hearing aid one day to check it out while using my 2.4 Gig. wireless headphones, and when I perched the ear cup to gain the benefit of my hearing aid (I only have one for the right ear from a Worker's Comp covered injury seven years ago), the Impact's Overload Audio was more functional with a Volume setting at ± 3 o-clock.


Quote
trashfinder
Monte, i had been using Di3, i switched to VLX1 when i got the coin. i had Gain at 85, Iron at f1, no disc, no notch, tone break 25, audio at 30, 14 freq. This detector with that coil is so good ! When i pinpointed and it was bouncing between 8 and 9 inches i was thinking wow! And what was crazy was the ID was solid not bouncing just 84,85 only two numbers and the tone was so sweet that i was talking to myself saying now i might have something sweet here. This is a wonderful detector.
Also, 'Thank You' for listing your chosen Mode and Settings used. With my mid-sized 5X9½ DD or standard 7X11 DD I usually prefer to use any of the 2-Tone search modes, especially Di2 and DEEP.

But when I have a smaller coil mounted, such as the 4X7½ DD or round 5" DD, I use Di3 as my saved start-up mode and use it the most, changing up to Di4, VLX1 or VLX2 during my searches based upon the conditions I face. This is mainly for Coin & Jewelry Hunting in urban trash, and especially for Relic Hunting when I am encountering a lot of nails or rusty tin / sheet metal. What has become more of a 'universal' coil for any search is the new 7" Concentric. I also use it most with the same multi-tone modes as the smaller-size coils, but I also cruise low to sparse trashy sites with it in any 2-Tone mode.

In Di3 my start-up gain setting is '99' and in most of the other 11 Modes the start-up gain setting is '95' with a few set at '85.' I then adjust as needed or desired. My Iron Audio Volume is set at '2'. Disc. in most modes is Saved at '3' or '5' and '20' in the Gen mode. I never use Notch Disc., and my Tone Break varies by mode. In most cases the lowest Tone Break setting is at the Ferrous/Non-Ferrous break-point. My Lowest Tone is usually '10' for Iron range, and in the 3-Tone modes it is between '35' and '40' for a Mid-Tine and the Higher Tone setting is '50' or '70' based upon the mode chosen. The bulk of my hunting is done at the default start-up 14 kHz, but I do shift frequencies based upon on site challenges and EMI.

I agree with you 100% on the Impact being a wonderful detector! :thumbup:


Quote
trashfinder
I was also working slow because of the trash content being heavy, a lot of iron there too.
I always, at least 98+% of the time, use a slow and methodical sweep speed so that I can enjoy the excellent benefits of the different functions, and better handle highly mineralized environments.

Keep enjoying your Impact and best of success on your searches. :detecting:

Monte



"Your EYES ... the only 100% accurate form of Discrimination!"

Stinkwater Wells
Trading Post

Metal Detector Evaluations and Product Reviews
'How-To' help for Coin & Jewelry Hunting, Relic Hunting and Useful Techniques.

My Regular-Use Detectors:
Nokta: Impact, FORS Relic and FORS CoRe
Tesoro: Vaquero, Silver Sabre µMAX and Mojave
White's: MX-7
Note: Detectors are listed alphabetically by Brand, and chosen as desired based on search site conditions.
Additional search coils. mounted on spare lower-rods, are on-hand in my accessory coil tote.
Pinpointers: Using Nokta and Makro Pointers.
Headphones: Using White's Pro Star w/'tank style' ear cups.
Recovery Tools: Using White's Ground Hawg Shovel and DigMaster digging tools.

*** All working well today to make memories for tomorrow. ***

monte@stinkwaterwells.com .. or .. monte@ahrps.org
(503) 481-8147


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