A question of logic???

[robert roy]

I have a question the old timers can probably answer.

I'm out hunting and I have the MD on all metal. I get a signal. It would seem logical that rather than digging up everything metal I could switch
the MD over to coin or relic or jewelery. Sounds logical but I now hear that it doesn't work that way, usually. Any feed back on this?

Robert R

[PAPPY]

What type detector you using? You can switch over using the ACE250 with No Problem.

[anne]

Pappy is right, also do you have 2 tones usually dull noise for iron and sweeter medium to higher pitch for something you really want to dig. Hope this helps.

[RingDancer]

I don't quite understand your question??? Maybe you... or someone else can explain???

By my understanding of this question....I would say...it depends on which detector you are using...Does it not have a tone ID???...If you switch to any other program besides All metal mode...you will pick up all items made from another type, such as foil,nickel, alluminum, silver, brass....even if you are in one of these programs, you may pick up an old rusty nail, that is giving up an iffy tone, because of over the years, its composition will change with rust added....( my explaining may not be correct here...so if I need to be corrected from someone...please do!!!)
Also my interpretation from your question would be...Most would say stay in all metal mode because you don't want to miss small gold items or all other small objects that might change over the years....
Also you might just turn up a very interesting relic...made from metal that you might want to keep....In other modes besides metal, it will almost always discriminate out all your metal objects out...Giving you only high or a different tone for other types of metals as I had mentioned above!!!
Most like to dig everything just because you don't know unless you dig it out!!!! Digging square nails...will let you know if you are in an old area for older coins!!!

If I need to be corrected here someone please do!!!!

Pat

[JoAnne]

If I am reading the question correctly they are asking that if they get a tone in all metal mode if they switch to another mode will it tell them if it is jewelry or a coin by not responding to the same target. That way they would know what it was before they dig it. IF the tone is in all metal mode then it could be anything but by switching back and forth they can narrow it down to what the object may be by how it reacts or doesn't react in the different modes. Is this correct?

[cjoej]

There is something referred to as 'reverse discrimination' and the process goes like this:

You search in 'all metal' mode until you get a signal;

Then you switch to 'discriminate' mode to test if the item comes up as one of your "good" signals;

Based on the results you decide if you want to dig.

This can be an effective way to search a trashy area, but be aware that some detectors will eliminate signals such as nickel along with the iron (ferrous) metals in 'discriminate' mode and this could cause you to ignore or not pickup some valuables (note: Canada and Mexico both have coins that have a nickel outer ring that can be eliminated this way).

Using 'reverse discrimination' can be helpful but will depend on the particular model of detector you use and the situation you are searching in.

Hope this helps, SWC
Joe