Returned to my local park and continued my Jedi knight training with the F-75. 8 targets recovered, 2 silver (51-D quarter and 47-S rosie) and 2 wheats (30 or 39-S and 55-D). Started swinging and within a couple of minutes got a nice sweet, repeatable tone that sounded like it was miles away! 8 inches down, 51-D quarter! After a couple of wheats, I got a tone that sounded like the guy stuck in the spider
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Jedi Knight training with the F-75
- Thread starter ziphius
- Start date
Low-Boy/LCPM
Active member
I think Delta pitch is more like the minelab flute sound you have to be able to handle all of the sounds it is going to make and for me and the ground I hunt in I would go crazy.
Lowboy,
Yes, I was thinking exactly that: delta pitch reminds me of the Explorer sounds. But when I'm targeting silver at turf parks, I know that silver has a higher pitch than clad and can thus ignore all the other sounds. That's been the hard part for me, ignoring most of the target sounds, but I've got it down now. It's a whole different machine for me in turf using delta pitch. When I'm relic hunting more rural sites, it's definitely all-metal mode though! - Jim
Yes, I was thinking exactly that: delta pitch reminds me of the Explorer sounds. But when I'm targeting silver at turf parks, I know that silver has a higher pitch than clad and can thus ignore all the other sounds. That's been the hard part for me, ignoring most of the target sounds, but I've got it down now. It's a whole different machine for me in turf using delta pitch. When I'm relic hunting more rural sites, it's definitely all-metal mode though! - Jim
Low-Boy/LCPM
Active member
So when you turf hunt is it clean or trashy because with delta you are going to hear it going crazy in trashy areas. But I know one place that is an old school and good targets are hard to come by maybe I will try delta there. Does it help unmask targets?
at least for my old ears, I never found DP helped unmask targets. In fact, after trying it for a good bit, I went back to 3-4 tones and listened for those high tone tic's from among the trash. My F 75 also reads silver 2-3 numbers higher then it does the same denomination in clad. HH jim tn
I use the stock coil. Yes, using the dime example, silver dimes will ID 3-4 ticks higher than a clad dime, but they will SOUND exactly the same in 3-H or 4-H. The turf area I'm hunting isn't super-trashy, but it has a lot of modern coins, which I'm training my ears to consider as trash. Depending on the area, I may still be listening to an overwhelming number of targets (which you would still be doing in any other F75 mode...), but at least in Delta Pitch, the desirable targets (wheat pennies and silver coins) sound just a little sweeter. Also, in this particular spot, I'm not digging anything unless it is absolutely buried on the depth meter. I might be passing up some mid-depth goodies on occasion, but I've dug enough goodies here now to know that they good stuff is deep.
Jim
Jim
jimmyk said:Let me know where you site is, and I'll be more than happy to go in and clean out as much of the modern coins as possible.I't a sacrifice I'm willing to make for a fellow digger.
jimmyk in Missouri
jimmyk, it's a long way from your neck of the woods, I'm afraid you would lose out on the gasoline cost factor
...please explain to me the Delta Pitch.
"Delta" is the mathematical representation of change. For example, when a temperature goes from 50 to 75 degrees, it is said to have a "delta T" of 25 degrees. The factor, delta, is represented by a triangle symbol.
If delta represents change, then it was an apt name for the audio mode of the same name. The "Delta Pitch" mode assigns an individual audio tone to each of the numerical steps on a VDI scale. On the Fisher F70, which I have, this means there are 99 audio frequencies possible, when you have your DISC set at zero!
When you find a nickle for example, it gives a particular tone associated with the nickel VDI number. By comparison, it gives another one for Zinc Cents and for dimes and so on. It doesn't matter what the item is, it is the numerical VDI step that is associated with the tone.
If the VDI number jumps a point or two as you scan the target, so does the tone. So, for a nickel which normally comes in with numbers around 29-31, you would hear three separate, but closely spaced tones.
In the other modes, targets ranges are averaged, or grouped and given a particular tone to represent that group.
In the familiar 3H mode you favor, that nickel will get the same high pitch tone as dimes, quarters, halves, silver rings and copper cents.
Pull tabs and other mid-range targets share a different, mid-frequency tone, and iron.... well, it is all lumped together under a low tone segment.
I haven't really gotten the hang of the dP mode, yet. I tend to hunt trashy areas and, as noted already, the cacophonous din this gives you in the dP mode is distracting. In a clean area like a plowed field, I can see where it has real benefit.
"Delta" is the mathematical representation of change. For example, when a temperature goes from 50 to 75 degrees, it is said to have a "delta T" of 25 degrees. The factor, delta, is represented by a triangle symbol.
If delta represents change, then it was an apt name for the audio mode of the same name. The "Delta Pitch" mode assigns an individual audio tone to each of the numerical steps on a VDI scale. On the Fisher F70, which I have, this means there are 99 audio frequencies possible, when you have your DISC set at zero!
When you find a nickle for example, it gives a particular tone associated with the nickel VDI number. By comparison, it gives another one for Zinc Cents and for dimes and so on. It doesn't matter what the item is, it is the numerical VDI step that is associated with the tone.
If the VDI number jumps a point or two as you scan the target, so does the tone. So, for a nickel which normally comes in with numbers around 29-31, you would hear three separate, but closely spaced tones.
In the other modes, targets ranges are averaged, or grouped and given a particular tone to represent that group.
In the familiar 3H mode you favor, that nickel will get the same high pitch tone as dimes, quarters, halves, silver rings and copper cents.
Pull tabs and other mid-range targets share a different, mid-frequency tone, and iron.... well, it is all lumped together under a low tone segment.
I haven't really gotten the hang of the dP mode, yet. I tend to hunt trashy areas and, as noted already, the cacophonous din this gives you in the dP mode is distracting. In a clean area like a plowed field, I can see where it has real benefit.
Simply stated, the higher the conductivity of a target, the higher the pitch. Multiple targets can be difficult to deal with, because you end up with multiple pitches. In trashy areas you will get a multitude of competing signals, which can be daunting. It's my least favorite setting, but many who have worked with it love it.
jimmyk in Missouri
jimmyk in Missouri
I believe, over all, dp, 3h, 4h, 2f, mono, ect., all have their place and work. The type of hunting, age of site, trash content and kinds of trash are all determining factors for modes and tones used. At least for me, anyway. As an ardent coin shooter with a preference for the older coins, I am listening first off for all high tones, but dig a lot of mid tones, depending on the site. That is why I use a lot of 3 and 4h tones. It is really, IMHO, what one has learned from a good bit of digging and is simply comfortable with. I have dug 9 gold rings with my F 75, 5 read dead on 29- 30 and the other 4 gave readings as low as 23 and as high as 55. Something about those other 4 just sounded a tad different. If everything about "finding" was cast in stone and simple, this wouldn't be a very challenging and ulitimately, rewarding hobby. And by "rewarding", I don't mean monetarily. HH jim tn
It is really, IMHO, what one has learned from a good bit of digging and is simply comfortable with. I have dug 9 gold rings with my F 75, 5 read dead on 29- 30 and the other 4 gave readings as low as 23 and as high as 55. Something about those other 4 just.
That is so true Jim. What you like is a big factor.
I like the 2f mode but it isnt the best choice all the time. For coins in urban areas, I prefer the 4 or 4H tone - but that's me.
5:9 gold rings hitting on nickel is note worthy, too. Thats 55.55%. Fisher did a study some years ago and published it in their newletter, It supports what you have found.... gold rings tend to come in dead around nickels. I believe their figure was higher, in the 69% range. The rest, of course, fell outside that and so have to be dug on the fringe, as pulltabs and foil.
I wish I still had that old newsletter. I'd like to re-read that article.
That is so true Jim. What you like is a big factor.
I like the 2f mode but it isnt the best choice all the time. For coins in urban areas, I prefer the 4 or 4H tone - but that's me.
5:9 gold rings hitting on nickel is note worthy, too. Thats 55.55%. Fisher did a study some years ago and published it in their newletter, It supports what you have found.... gold rings tend to come in dead around nickels. I believe their figure was higher, in the 69% range. The rest, of course, fell outside that and so have to be dug on the fringe, as pulltabs and foil.
I wish I still had that old newsletter. I'd like to re-read that article.
I agree that it is "different strokes for different folks" when it comes to Delta Pitch, 3-H, 4-H etc. Delta pitch gives me the audio ability to tell the difference that has a VID of 72 vs one that has 77 and this is critical if you want to tell the difference between clad and silver dimes, for example. You COULD spend all your time glancing at the VID, but I find listening first, looking second works best for me. I may have also forgotten to mention that in concert with using Delta Pitch, I'm also digging ONLY targets that are BURIED on the depth meter. This is my strategy in turf areas and works great. Of course, in a field where I'm after relics, I'm digging everything. Happy New Year everyone. - Jim
be careful!..over the years i have learned that if you get a reading of 72 or so whether shallow ,OR deep!..you SHOULD dig!..this is because of varying sink rates of coins at the SAME site!..i know this because i ignored a shallow 72 a couple of times,then felt guilty.and went back to dig 'em!..well lo and behold!..merc and barber respectively!..after that very SOBERING experience,i NEVER let a shallow 72 "hit" go again!..now i am talkin' a (w) detector here with an analog meter,however i believe the results would be the same with the fisher!
regards!
(h.h!)
j.t.
regards!
(h.h!)
j.t.
i'm with you jim!..as we all know,v.d.i meters whether "digital",OR "analog" will indicate a "range" of numbers that correspond with ferrous or non-ferrous targets in the ground...this said,WHAT makes them effective is the ability of the operator to "deduce" AFTER much "digging" experience,the APPROXIMATE number(s) of a particular ferrous,or non-ferrous object!..again,once this knowledge is established,the operator WILL be able to determine with excellent accuracy WHAT IT IS he is digging!
(h.h!)
j.t.
(h.h!)
j.t.
They would, JT. Just recently on the Garrett forum, a raw newbie in California found a mid 1800's Mexican silver coin with his Ace 250. The depth? 2"!jmaryt said:
I dont think he had been detecting for more than few weeks, at most.
I reckon coins is coins. I dig all coin signals, regardless of the depth. Deep indications are always investigated - anything that repeats and is over 3" indicated is a "sho-nuff dig," as we say 'round these parts.
But, I'm not too proud to fill my pouch with clad, either.
This is hobby is called metal detecting, but that is a misnomer, to be honest. It should be called "metal recovery."