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F75 12" quarter test.

D

duggr

New member
I planted a Freshly Buried Silver Quarter a week ago at 12" deep. Today I took my F75 out to see what would happen and here is the results. The detector fast grabbed at 62.I had the discrimination set at 7 with the detector in the Je Mode. I was able to turn the sensitivity down to 30 in the Je mode and still pick up the Qtr in any direction.What I did't expect was for the the Target I.D. scale to lock onto 12 with the Confidence meter showing all but one bar. If I didn't know there was a quarter down there at 12" I would have walked over it dismissing the target as Iron.....I tried different sensitivity levels with no effect. I even tried the different modes but the F75 wouldnt pick up the quarter in any other mode
no matter how high I set the sensitivity unless I had the Discrimination set at O...... Anyone have any thoughts about this
they would care to share.
 
The coin is simply too deep for an accurate reading , thats a hell of a depth to find a freshly buried coin no matter how big the coin..
 
but its been in the ground for about 15 years now. My 75 will only get it in Je as well(very good though), but mine WILL Id it pretty close. Did you make SURE the area you buried the quarter was debris free? (a good scouring in all metal?). Did you pack the soil thoroughly and even dampen it a bit?? A deep quarter in loose dryish soil will not simulate a deep one thats been there for a long time. Very deep coins on the edge of detection will tend to read a lot lower on ANY TID than they will shallow, unless there is a target close to it (even a nail), and then the 75 will average UP, and the target may actually read higher than its actual value. Generally though, in high Fe soil, most detectors will read a tad higher on conductors than they will in more neutral soil. I'd check the surrounding soil(with the quarter removed, to make sure there arent adjacent targets the 75 is seeing. THEN, I'd rebury it, taking care to tightly pack the soil, and may even add a bit of moisture too. Streak!
 
I thought about doing the same streak. will let everyone know what happens after I re bury the coin!
 
12" on such a sized coin,(freshly buried), even at sensitivity 30, giving an id of seven.??????????

You have a piece of ferrous material under the head....?
 
And ID of twelve (12). You must consider the fact that the FE304 reading was at the very bottom of the scale showing low mineralization. I will Plant another quarter in the same area to see what happens.
 
I will recap on the facts Doug.:-

Ground Phase 62.
Motion sens. 30.
Je mode.
Disc at 7.
On a Qrt freshly buried at 12 inches !!!!!!!!!
Target ID 12........(WHICH IS IN THE'IRON' RANGE)

You say it was a 'Good hit'.... any which way you swung it.
Confirmation also good. Therefor no ambiguity of target response.

My analysis...You were reading a piece of ferrous within
in the vicinity of the Quarter.....Certainly Not the quarter on its own...................Matt.

p.s. Surely,you cannot imagine getting a solid hit on a Quarter at 12 inches with a Sens as low as 30?

You didn't tell us what the target's depth reading was ?
 
How does the deep iron in that area of low mineral ground ID?

Tom
 
Ill go back over every little detail that everyone here has mentioned
And will get back to the post. OH! by the way My whites 6000 XL Pro
will I.D. the 12" Qtr.,penny to dollar sweeping from and 11 oclock to 5 oclock position and reverse with a Good signal. The other directions do I.D the target as well but with a Slightly broken or clipped audio.
 
Due to its frequency the F75 is hotter on low conductive targets (gold rings/coins, nickels) than on high conductive targets (Silver rings/coins).
12" in ground on a quarter is very deep for a detector with that frequency. On a US nickel the F75 had no problems at 14+ inches in the ground. IT is safe to say that the F75 is good on silver and outstanding on gold and buttons.

Andy,NM
 
Are you saying that I will have to use my EX-2 to get the deep silver and then go back with the F-75 to get the nickels??? I have a F-75 on order but am starting to wonder
 
To find old silver coins in old sides it takes two things. One is depth on silver but as important than depth is target separation due to recovery speed. The Explorer can pull deep silver but the recovery speed is slow compared to the F75. The F75 due to its speed can see some coins the Explorer can't in trash. So yes, in some cases the Explorer may pull some deeper silver than the F75 but it can be the other way around in trash. Best is to have both.
The points for lightweight, speed and sensitivity to gold go to the F75.

Andy,NM
 
It will be interesting to compare the two. I do quite well with the EX-2 and dig some pretty deep nickles & gold rings(along with the rest) but a faster response in the trashy areas is probably going to be a big benefit especially if they ever come out with different coils. With the EX I can switch between the 5,8,10.5 12 & WOT & I do, which helps a great deal. Time will tell
 
I tried this last night. I buried a clad quarter at exactly 12" in the Tennessee Red clay that is my front yard. There are no other targets in the area surrounding the quarter. I know because I dug all of them after scanning in all metal.
I cannot pick the quarter up in motion all metal or discriminate. I do get a signal however in static all metal and pinpoint. I am curious to see what happens in a year or so.
 
I have an Explorer and yes, you will need another detector to feel confident that You got the lower conductive targets. My Tejon and Terra 70 finds them after the explorer like they wasnt there before.You will have to experience to believe but its the truth.
 
I've been thinking about this, and dont think your picking up the quarter . I think your picking up big iron close to it, and the 75 isnt seeing the quarter at all. if you getting high confidence bars, and its only at 15 or so, it HAS to be seeing iron. any updates yet?
 
Streak
I'm waiting for my Fisher F4 to get here before I dig it up and check it out. I'm just curious what the F4 will do. I will post the results as soon as I get them. I did go back yesterday with My F75 and My 6000 XL Pro to check it out again! Same Results
 
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