Last week I hunted my favorite large park with the small coil. This park is close to a hundred years old and it is still in use. You can imagine the amount of trash here with most being modern. I swear there are pulltabs and beaver tails every two inches around the picnic areas. I have tried every small coil made for almost every detector and I have had success of some kind with all of them. The very best coil I have used for finding silver and copper has been the Tesoro V with the 5.75 hot coil. But, the drawback to this coil is being a non metered detector, I had to set the disc to cherrypick only silver and copper. I had to give up the chance for gold and old nickles. I have found many barber coins, wheats, and IH's with the small coils with some being only a couple of inches deep, but masked. I have been looking and trying every detector made for the last four or five years, but I had to have one that will handle this particular park. The open grounds here are many acres and a detector with a bigger coil that will go deep is what is needed. To make matters worse, the ground here is bad. The F75 fast grab numbers are in the high 80's and low 90's. The big coil works perfect. Last week with the small coil on the F75, I had a bad day of hunting. I must have dug a 100 pull tabs and beaver tails that looked and sounded like a coin. I came to the forum for help and the next hunt at a different spot, the small coil worked better than any other small coil I ever used. At this spot the fast grab numbers were in the 40's and 50's. Yesterday I took the F75 with the small coil back to the park from he&* thinking I had fixed and figured the small coil out. By the way, I reset the detector, lowered the disc, went to three tones instead of the 3 or 4 h tones. I immediately noticed the fast grab numbers in the low 90's and I immediately started digging the tabs that sounded like coins. I started trying to figure out what was different about coins and tabs. After closely watching and digging about 25 tabs, I figured out that tabs would have a one way high 80's or low 90's number. Also, wadded up pieces of foil and gum wrappers almost always give a 90's number along with a repeatable high tone. I have cleaned the clad coins from this park long ago and most of the coins I now find are older so I don't get much of a chance to dig 30 or 40 coins to get the F75 figured out. A spot with loads of coins will help me to get the hang of any detector, but I need a detector that will handle this particular park. I had an Xterra 70 that did a great job on the field portion of the park, but it also struggled with the poor ground and abundant trash. I am confident that the F75's small coil is working so here is my main question. Can this bad ground be messing with the small coils abilities to find coins in this mess? I forgot to add that all is not at a loss at this spot. I did find 8 coins yesterday with two being early wheats, one mercury dime from the teens, and a 1935 buffalo nickle. I also dug way too many tabs. I guess I am still learning, but I am getting shop worn digging all this junk. Any and all help will be appreciated. R.L.
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Small Coil Questions
- Thread starter RLOH
- Start date
Yeah, I'm real familiar with your situation. The large coil is a DD coil and works better in that bad ground. If, and when Fisher comes out with a small DD coil that's what you need to use in the park with the bad ground and all the trash. It'll give you a better read on your targets and get better seperation. Your small concentric coil is great for seperation, but is being adversely affected by the bad ground, in terms of target ID. There's nothing wrong with the detector and it takes different coils to address all the ground conditions one can find while hunting.
Your small coil is probably being affected by your very bad ground. I am still surprised, though, at your tab readings reading as high as they do. Are the tabs that read this high, deep? And if so, are they the early style (small ring) with the tab still intact? That is the only style that seems to fool my F75 and small coil when the tab is 5" or so deep. And even then, the reading has never been in the 80's. My FG gb, though, is in the 60's into the 70's. What settings are you using? Good luck and HH jim tn
Doug[Manila]
New member
Hmm..I didn't know the small coil was concentric and sort of assumed it was DD.
I wonder why they even made it elliptical...so what is the optimal overlap for this coil so you won't miss deep dimes?
I wonder why they even made it elliptical...so what is the optimal overlap for this coil so you won't miss deep dimes?
usually driving the VDI'S lower on the scale.......BUT, with the F75................the targets will tend to average ID's UP! (unless you in VERY VERY hot soil, then everything will read lower) This is a GOOD thing for a really good reason. First...........targets at depth tend to Id lower than objects say,,,,,,,,,,,,,,at 4 or 5 inches. If you have a machine that averages down.............there is a far higher likelyhood you'll NOT dig it.....thinking its trash or iron. if your machine averages UP, then it will make you more inclined to dig.....therefore recovering a lot more goodies. Anyone thats looking for a machine that will positivly ID all targets in all situations has a very long wait. There are so many things that will adversely affect phase angles, its hard to take into account all the variables. Co-located targets probably account for the bulk of the false ID's, and bad soil is nothing more than a co-located target!
I like the small Concentric, but ONLY in woods sites where the physical size of the bigger DD makes it hard to use. Despite the size difference, the big coil still gets far better separation.
I'm still patiently for a DD "shooter" coil to be released. THAT will be awesome in high iron sites!!
As far as trying to ID tabs where there are a lot of co-located targets.......thats an effort in futility as well, UNLESS they are pretty much all the same, and come in very close to the same VDI'S. With the F75, I treat all very high VDI'S as suspect...especially if they are in the 90's. Audio is key here.and a really good set of phones, and a "tuned" ear are paramount.
The beauty of the F75 is it fast reset speed, and it will tend to ID co-located targets far better than most machines, but you have to do it as per the manual to get accurate ID'S.
I dont swing REALLY as wide as the manual says, but I DO increase my sweep speed a lot to ID targets at depth. Slower sweep speeds will tend to ID higher than the targets actual numbers with the 75, ESPECIALLY if the target is at depth. When you increase sweep speed, the audio will get funkier, but the ID will be MUCH more accurate. Take a few minutes and try it on a number of suspect targets and you'll see what I mean. the VDI'S will almost always DROP, and be a lot closer to the actual target ID. (the one you'll get on top of the ground). Streak!
I like the small Concentric, but ONLY in woods sites where the physical size of the bigger DD makes it hard to use. Despite the size difference, the big coil still gets far better separation.
I'm still patiently for a DD "shooter" coil to be released. THAT will be awesome in high iron sites!!
As far as trying to ID tabs where there are a lot of co-located targets.......thats an effort in futility as well, UNLESS they are pretty much all the same, and come in very close to the same VDI'S. With the F75, I treat all very high VDI'S as suspect...especially if they are in the 90's. Audio is key here.and a really good set of phones, and a "tuned" ear are paramount.
The beauty of the F75 is it fast reset speed, and it will tend to ID co-located targets far better than most machines, but you have to do it as per the manual to get accurate ID'S.
I dont swing REALLY as wide as the manual says, but I DO increase my sweep speed a lot to ID targets at depth. Slower sweep speeds will tend to ID higher than the targets actual numbers with the 75, ESPECIALLY if the target is at depth. When you increase sweep speed, the audio will get funkier, but the ID will be MUCH more accurate. Take a few minutes and try it on a number of suspect targets and you'll see what I mean. the VDI'S will almost always DROP, and be a lot closer to the actual target ID. (the one you'll get on top of the ground). Streak!
for one thing,if its a place you frequent a lot, then if you take a bit of junk out every time you visit, then it will clean the ground for subsequent visits, and unmask deeper targets.
The other advantage is......a LOT of those "junk " targets are real keepers.
I remember about 25-30 years ago......I did a LOT of victorian yards, and dug hundreds of silver coins and such from them. Well...after a few years the silver started to dwindle....and out of boredom I started digging those "iffy" low conductive targets. THATS when the really COOL stuff started coming out of the ground.....and I was amazed at what I have been walking over and leaving in the ground. Remember..the BEST descriminator is your shovel!!!!!! Streak!
The other advantage is......a LOT of those "junk " targets are real keepers.
I remember about 25-30 years ago......I did a LOT of victorian yards, and dug hundreds of silver coins and such from them. Well...after a few years the silver started to dwindle....and out of boredom I started digging those "iffy" low conductive targets. THATS when the really COOL stuff started coming out of the ground.....and I was amazed at what I have been walking over and leaving in the ground. Remember..the BEST descriminator is your shovel!!!!!! Streak!
lots of low conductive gold stuff....AND lots more silver, but stuff like bracelets and jewelery. Roy Rodgers rings, cool old collectible kids toys,,,,,,,,,,,,,,,,,, tokens, etc etc......the list goes on and on. I dont get too excited about coins much anymore. How bout buttons??? Ask any Cw hunter...and buttons will rank higher in his/her list than silver. Lots higher. I guess its kind of a personal preference. some guys love diggin coins.......some love artifacts.
We dug 98 coins from a little site across the street from me a couple of weeks ago. 5 were two cent pieces. One was an 1840 LC. 6 were shield nickles. 4 were flying eagles. the rest were indians, with the newest being about 1880. most were 60's and early 70's, with a few REAL good dates. About half were fatties. While it was kinda fun diggin em, I'd rather hunt a site where I was only diggin flattie buttons, as the POTENTIAL is there to dig something really good, like a GW button for instance. I try to pick sites for their potential, not for the coin content.
I had my fill of coins years ago (70's) when the silver was plentiful in the large victorian yards that were abundant in my area. I was also the only guy in town that dug them. If you didnt come home with 20-30 Barber coins and a pocketful of indians, it was a slow day. I've since pretty much switched to Colonial sites only these days....but hunted the woods site across the street as I'd heard stories of it for about 15 years now (was an old church picnic grove).and had the opportunity to hunt it to try to find it. Linda (my better half) loved it though...........as she never had the opportunity to find indians in that kind of concentration before. Sure..I wont throw silver back in the hole.........but I've always had a bent towards more personal items............. Streak!
We dug 98 coins from a little site across the street from me a couple of weeks ago. 5 were two cent pieces. One was an 1840 LC. 6 were shield nickles. 4 were flying eagles. the rest were indians, with the newest being about 1880. most were 60's and early 70's, with a few REAL good dates. About half were fatties. While it was kinda fun diggin em, I'd rather hunt a site where I was only diggin flattie buttons, as the POTENTIAL is there to dig something really good, like a GW button for instance. I try to pick sites for their potential, not for the coin content.
I had my fill of coins years ago (70's) when the silver was plentiful in the large victorian yards that were abundant in my area. I was also the only guy in town that dug them. If you didnt come home with 20-30 Barber coins and a pocketful of indians, it was a slow day. I've since pretty much switched to Colonial sites only these days....but hunted the woods site across the street as I'd heard stories of it for about 15 years now (was an old church picnic grove).and had the opportunity to hunt it to try to find it. Linda (my better half) loved it though...........as she never had the opportunity to find indians in that kind of concentration before. Sure..I wont throw silver back in the hole.........but I've always had a bent towards more personal items............. Streak!