First, if I may, for those folks who are not familiar with the Makro or Nokta models, the term 'ID Filter' is what we generally call 'Discrimination.'
sasquache said:
Hello fellow Makro user's i have a question, where does everyone run there ID filter on the red Racer and why?
Naturally the types of sites we hunt, the trash we deal with, the conductivity of the targets we are after, and our patience/tolerance level, all come into play when making a Discrimination/ID Filter setting. For
ME, I need a lower rejection setting because I spend perhaps 95% of my Non-Urban time out Relic Hunting. The old-use places I hunt tend to be very littered, and a bulk of that is made up of nails, cut wire, rusty tin, and other ferrous type trash. When hunting in any very littered environment you are best served by using a detector and search coil that are highly efficient, using a slow and methodical sweep, and keeping the Discrimination as low as tolerable in order to unmask desired targets.
Traditional Coin Hunters often like to use a lot more Discrimination because they often deal with various sizes of foil, discarded pull-tabs and pry-tabs, and some even like to reject the US 5¢ and modern Zinc 1¢ coins hoping for higher-conductive coins and possibly some older silver coins. In the past I used to do a LOT of Coin & Jewelry Hunting in cities and towns, but I have never had a desire to get carried away by using a high Discriminate setting.
On the 'original' Racer [size=small]
(often called the Red Racer)[/size] the Ferrous/Non-Ferrous 'break-point' numeric VDI number is '40,' just as on the Gold racer, and Nokta FORS CoRe and Gold +. On all four of these models my ID Filter/Discrimination is saved at '10.'
As for your question of
"Why?" the answer is simple.
• Most ferrous junk [size=small]
(but not all)[/size] of various sizes and shapes will be rejected with an ID Filter of '40,' but I do not want to reject ALL of the iron debris. All of these models can produce a Low-Tone audio response on iron-based targets, and since I search very contaminated sites, good-target masking needs to be dealt with, and that means listening to a good deal of iron.
• I used to operate mode of my One-Tone detectors with the Discrimination set just at the point
to barely reject iron nails, and that let me hear the more conductive iron that read above that rejection point, but helps let me unmask near-by desired keepers.
• On some models that offer a Two-Tone audio to help classify Iron from Non-Iron, I run my Discrimination level
a little below the iron nail rejection point, which I can do with ANY of the Makro and Nokta models I own and use. With the Low-Tone Audio response for most ferrous junk, I can hear when I work the search coil close to an iron target, including nails which is the biggest offender. Then, knowing that I have a metal target present but alerted that it is likely a ferrous-based item, I can either recover it [size=small]
(if I am searching for iron type relics)[/size], or ignore the iron trash but cautiously work the search coil around and near the offending junk and listen for a possible High-Tone [size=small]
(in a 2-Tone mode)[/size] or a Mid-Tone or High-Tone [size=small]
(in the 3-Tone mode)[/size] to unmask a desired target.
With these models, common iron nails are rejected with an ID Filter/ID Mask Discrimination setting of ±21, So then the question,
"Why do I use a lower Discrimination setting of '10' instead '20' or '21' which would reject nails?" I like 'Simple' and my reasoning is. Since I can hear the Low-Tone for Iron targets, then I use the lower setting of '10' which lets me hear almost all iron debris, but is high enough to help deal with some of the hot rocks and problem ground that is associated with many of the very mineralized sites I hunt.
sasquache said:
I usually run mine at "45" am i missing something?
Possibly, yes, but it really is a matter of what you are looking for and what you don't care to mess with. If you are mainly Coin Hunting in city parks and schools grounds and yards and the like, and they are not too heavily littered to cause serious good-target masking, and if you mainly just want to find Coins, then your ID Filter setting of '45' might work okay ...
for You.
If you are hunting urban environments and you have the chance to also find items like Gold Jewelry, to include ear rings, bracelets, anklets, neck chains and rings from child's size to larger-sized adult rings, then I would not use that high a Discrimination setting. Instead, I would suggest a lower setting to accept at least some of the upper Iron Range ID numbers, and in my case for Coin & Jewelry Hunting it would likely be ± '21' to just barely reject iron nails. That will enhance the probability that I can hit on some small, thin gold jewelry that often has a TID read-out just barely into the Iron ID range.
sasquache said:
I just feel most junky targets are 45 and bellow i have dug buttons, buckles and some foil and some can slaw with a setting of 45
Correct, MOST junky targets tend to fall below '45,' but NOT ALL junky targets do. Also, some desired targets WILL have a read-out in a range from '45' and down to perhaps ± '35.' It's all a matter of a person's patience and tolerance to deal with annoying trash and still find what they would like to.
sasquache said:
Now i run my Red Racer at Gain, 80-85 two tone, tracking on if the ground is stable enough ( Flat and even). Thanks friends
Read the User Manual and it will tell you that they suggest Tracking to be 'On' in the All Metal mode,
if desired., and suggest it to be 'Off' and NOT use GB Tracking in any of the motion-based Discriminate modes. I use all the Makro and Nokta models listed below and with all of them the Tracking is 'Off' as I prefer to quickly do the Automated ground-grab Ground Balancing and adjust as needed should I move to a more mineralized or less mineralized area.
Monte
