Hello , all . First let me introduce myself . I am a longtime reader , first time poster on this site . I have been a detecting fanatic for six years now . I have used several different detectors by different makers so far ( used tesoro cibola and fisher f5 for last two years with much success ). Last week I got an F70 . All I can say is WOW . This is one mean machine ! I have been searching a late 1800s homesite for two years now and good finds have been very few and far between . First time I turned it on , default settings , within ten minutes on this site I dug an 1880 IH at 71/2 inches with a large chunk of rusted iron in the hole .No doubt it was a good target . Since then I found a nice religious medallion in the same area . The problem with this site , and many others I have , is square nails , and plenty of them . I hear a great signal , dig , and find a square nail . Sometimes a good target in the hole also , sometimes not . I have been detecting long enough to know that this will happen with most detectors , but with mild soil , is there any way to set the F70 up to ignore square nails and still pick up the goodies ? Thank you all in advance for your replies .
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F70 What to do about square nails
- Thread starter Jornard
- Start date
I have dug a few of those square nails.Nothing with what you are dealing with. I am a coin hunter. You could try hunting in tone@2F. I think the setting of disc@1 will give the low iron tone? Try the thresh@ - or + numbers to see if you can see if there is something different with the square nail. Anything different that you can pick something out of the signal to recognize the nail? The F70 has the ability to adjust to different hunting conditions. Now it is up to you to start to experiment with setting. See if you can find what will work.
I found out what worked for the kind of hunting I do and kind of quit experimenting with settings. Good luck and Happy Trails....Z
I found out what worked for the kind of hunting I do and kind of quit experimenting with settings. Good luck and Happy Trails....Z
REVIER
Well-known member
I know 2 ways that worked for me.
They worked with 3 different coils, too, but if you have a sniper coil that will make it easier.
Here is one way.
Keep in mind the F70, F75 and T2 are all built on the same basic platform so setting advice for one can also translate over to the others in many instances.
http://www.findmall.com/read.php?37,1279647,1279882#msg-1279882
Here is another way I call the blast through method.
It is insane, crazy, illogical and pretty much so far out of the box thinking that you can't even see the box...but it works for me.
It took me several hours to even start to understand what I was experiencing but eventually it all started to click.
With more practice I got pretty good at using this method and I have used it at several other challenging sites loaded with tons of iron and others with regular park trash and it always works well.
The site I learned this technique I visited for two years with several detectors and coils and found maybe two wheaties...and that's it.
They weren't even all that old.
Then I vowed to try every setting I could think of to solve this puzzle and conquer this insanely iron infested site after I got my F70.
I was lucky enough to hit on this method.
A million nails big, small, square and round, other iron of all sizes from tiny bits of wire to building materials from an old knocked down house to some pretty large pieces of iron you would find on a working farm.
Nobody I know ever tried to hunt this place more than once except me.
Nobody ever found anything except one silver dime that I know of.
I did better...eventually.
It took time but soon enough I learned to dig less and less iron and then more and more non ferrous targets.
Then the really good stuff started to show up.
Out of everything I have ever learned in this hobby I am most proud of what I learned to do at this site and what I found at this very challenging site.
Just remember if you want to try it as with most things practice makes perfect.
http://www.findmall.com/read.php?37,2105767,2106511#msg-2106511
They worked with 3 different coils, too, but if you have a sniper coil that will make it easier.
Here is one way.
Keep in mind the F70, F75 and T2 are all built on the same basic platform so setting advice for one can also translate over to the others in many instances.
http://www.findmall.com/read.php?37,1279647,1279882#msg-1279882
Here is another way I call the blast through method.
It is insane, crazy, illogical and pretty much so far out of the box thinking that you can't even see the box...but it works for me.
It took me several hours to even start to understand what I was experiencing but eventually it all started to click.
With more practice I got pretty good at using this method and I have used it at several other challenging sites loaded with tons of iron and others with regular park trash and it always works well.
The site I learned this technique I visited for two years with several detectors and coils and found maybe two wheaties...and that's it.
They weren't even all that old.
Then I vowed to try every setting I could think of to solve this puzzle and conquer this insanely iron infested site after I got my F70.
I was lucky enough to hit on this method.
A million nails big, small, square and round, other iron of all sizes from tiny bits of wire to building materials from an old knocked down house to some pretty large pieces of iron you would find on a working farm.
Nobody I know ever tried to hunt this place more than once except me.
Nobody ever found anything except one silver dime that I know of.
I did better...eventually.
It took time but soon enough I learned to dig less and less iron and then more and more non ferrous targets.
Then the really good stuff started to show up.
Out of everything I have ever learned in this hobby I am most proud of what I learned to do at this site and what I found at this very challenging site.
Just remember if you want to try it as with most things practice makes perfect.
http://www.findmall.com/read.php?37,2105767,2106511#msg-2106511
I find more by learning to embrace iron signals rather than trying to omit them. If I'm overwhelmed at a target that becomes difficult to untangle I start to ask myself what the target IS NOT rather than what IT IS.
We are bombarded with a massive amount of info with what the F series returns to our ears at a site like this. The F70 is massive in available power to the user and one needs to learn how to use that to his advantage.
I have been too busy helping my grandson learn his AT Pro for water hunts to explore Reviers blast through method to any depth but I can relate to it since have used a technique much like his for some time now. I have always had my program 2 set up in Auto Tune with very high sensitivity settings specifically for ground grabbing and to closely study the target ID numbers in deeper targets and those iron infested targets that may very well be masking good items.This also helps in the nickel and tab scenario. Number separation seems to be better in Auto Tune mode than the discrimination mode which I rely on for audio hunting. The 70 has the ability to surprise me yet after three years and it is no surprise that people like Revier are finding yet another way to put auto tune to good use. I tend to go a -1 to -3 threshold in my program 1 discrimination mode at these sites to eliminate small rust from the nails which like to mimic the dime and quarter signals. Lowering sensitivity in this mode also will help eliminate some false high tones but I never run more than a 1 discrimination setting in this program since I want to hear the iron as a clue.
In auto tune mode signals from coins and other good targets will still be dominate over the trash but to the REOCCURING NUMBERS rather than tones. Lesser re occurring numbers tells you what the target IS NOT. It will all fall together in time. Your interest in the F70 will not go unrewarded--I promise you---Hope this helps
IB
We are bombarded with a massive amount of info with what the F series returns to our ears at a site like this. The F70 is massive in available power to the user and one needs to learn how to use that to his advantage.
I have been too busy helping my grandson learn his AT Pro for water hunts to explore Reviers blast through method to any depth but I can relate to it since have used a technique much like his for some time now. I have always had my program 2 set up in Auto Tune with very high sensitivity settings specifically for ground grabbing and to closely study the target ID numbers in deeper targets and those iron infested targets that may very well be masking good items.This also helps in the nickel and tab scenario. Number separation seems to be better in Auto Tune mode than the discrimination mode which I rely on for audio hunting. The 70 has the ability to surprise me yet after three years and it is no surprise that people like Revier are finding yet another way to put auto tune to good use. I tend to go a -1 to -3 threshold in my program 1 discrimination mode at these sites to eliminate small rust from the nails which like to mimic the dime and quarter signals. Lowering sensitivity in this mode also will help eliminate some false high tones but I never run more than a 1 discrimination setting in this program since I want to hear the iron as a clue.
In auto tune mode signals from coins and other good targets will still be dominate over the trash but to the REOCCURING NUMBERS rather than tones. Lesser re occurring numbers tells you what the target IS NOT. It will all fall together in time. Your interest in the F70 will not go unrewarded--I promise you---Hope this helps
IB
REVIER
Well-known member
With so many possible settings I gotta believe there is probably more than one way to attack any site and be successful.
I am always thrilled when I find just one that works for me, I read and devour all info on many forums to possibly discover others that might work and I love to experiment.
I use and have used other detectors and have had my jaw dropped many times on what I have seen them do, but never as much or as often since I started swinging the F70.
I have the opinion that there is probably no site, no challenge, no puzzle or problem this thing couldn't take on and conquer with the right knowledge and settings.
Right now I am attempting many different ways to use this thing to get some depth and decent ID's in some of the most mineralized, iron infused, difficult and challenging devil dirt in the country.
I am slowly making headway...the good targets are starting to show up as I make adjustments.
I have almost as much fun on my journeys to discover ways to find great targets as I do when I find those targets themselves.
The F70 makes these journeys more exciting than I ever thought possible and I hope that never ends.
I am always thrilled when I find just one that works for me, I read and devour all info on many forums to possibly discover others that might work and I love to experiment.
I use and have used other detectors and have had my jaw dropped many times on what I have seen them do, but never as much or as often since I started swinging the F70.
I have the opinion that there is probably no site, no challenge, no puzzle or problem this thing couldn't take on and conquer with the right knowledge and settings.
Right now I am attempting many different ways to use this thing to get some depth and decent ID's in some of the most mineralized, iron infused, difficult and challenging devil dirt in the country.
I am slowly making headway...the good targets are starting to show up as I make adjustments.
I have almost as much fun on my journeys to discover ways to find great targets as I do when I find those targets themselves.
The F70 makes these journeys more exciting than I ever thought possible and I hope that never ends.
Thanks for the replies and info , guys . I am going to attack this site again and take it slow this time . I will try your blast thru method revier , and Sl mode. Honestly , I have not hunted in auto tune mode yet , but it may work in some areas of this site . I realize that there are so many combinations of settings to use , I just need to find the right ones . I find this to be fun too , and with this machine I feel like I'm in for a lot of it ! This place is frustrating , but it has given up some of my favorite finds . A bone handled fork , several Indian head pennies , buffalo nickels , and an 1876 shield nickel . I have yet to find silver , but it should be here . And if it's here , I have ultimate confidence that the 70 will help me find it . Now I just need some rain . The ground is so dry now and this place really comes alive with signals after a good rain . Thanks and HH
still looking 52
Well-known member
First off I've never used a f70 machine, I've got an f5 but I'm thinking they are enough alike to help you with the square nail problem. Use muti tones and listen for the high tones, check your # to see if they stay within a couple points of each other, if they jump around more than that its probably not a good target. Everybody who reports on that f70 machine says its a fantastic rigg so with a little learning curve you'll be getting that silver. Good luck and keep us posted.
REVIER
Well-known member
still looking 52 said:
The F5 is slightly different and this might work, but this method didn't work at all for me and the F70.
When you have a non ferrous target in the same hole or right next to multiple iron targets you WILL always get jumping no matter what disc level you set and I never got good numbers within a few of each other.
Multi tones were pretty much useless, too.
I used all metal mostly but sometimes low disc, mono tone and looked for repeating blocks of numbers in the non ferrous higher areas.
There were always drops to iron, and falsing in the higher areas too but eventually I began to see patterns that indicated to me there was a good target somewhere in all that mess and I got better and better at it as time went on...but it took practice as I said.
Over time it got to the point that iron rarely fooled me and when I did dig a hole there was usually iron in there but also a non ferrous target most of the time.