I've been metal detecting since new years, starting with the F2. I've had my F75 now for about 3 weekends of hunts and have a pretty good grasp on it. I can ID most of my targets now before they come out of the ground. However, after switching to the smaller coil this weekend (just got it on Friday), I feel like I'm back at starting line. Twice the thing was giving repeated high-tone in a 360 sweep of a target and a solid VDI, showing the target as 6 inches deep. Twice it turned out to be a small piece of foil about half an inch under the surface. On the default DD coil, that target would have read in the 20's. Are there some basic hunting adjustments I need to be aware of when switching from a 11" DD coil to a 6" elliptical that will prevent me from digging targets as previously mentioned?
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F75 - Adjusting to the smaller coil
- Thread starter seattleMD
- Start date
What did the vdi show the piece of foil was? I've been using the small coil a lot since Christmas and have not had to make any major hunting adjustments and am digging some pretty deap wheat cents and silver dimes. Now, targets deeper then 5" do tend to be somewhat bouncy and don't give real accurate depth readings. But, I don't have a problem with that as I dig all iffy signals, anyway. I am, though, wondering about those foil readings of yours, as I've not experienced such with my small coil. HH jim tn
My small coil went out today when attempting to try it again after some weird problems last hunt.
Last hunt I noticed every nickel indication turn out to be a square tab. I also noticed a couple times that a penny, dime and quarter would sometime jump around on the VDI but was in the general area. I took it due to the trashy area. And twice the machine emitted a solid steady tone and wouldn't stop unless I turned the machine off then turn the detector back on. I didn't think of it much then, but today when I turned it on, the steady tone was stuck on. I checked connections and scuff cover, and still the same. . I started thinking the machine took a dump on me. I did a reset unsuccessfully. I switched to the stock coil and all was fine.
On the way home, I stopped by a friends place and tried his small F-75 coil. All was fine, so I tried mine again and the tone wouldn't stop. Swapped back to his and all was fine. So I guess my small coil lasted only a couple hunts
Of all the years of detecting and all the machines I have and had in the past, this is the first problem for me. Kind of frustrating but I guess it was going to happen one of these years. Well I did have a coil years ago that if I bumped it into a solid object like a rock or tree, it would emit a brief tone, but other than that, I continued using that coil probably 20 years or so with no other problems.
So I have never before had a coil completely fail, nor have I or my friend heard of one act the way this one did.
When one starts to act up, I usually check the connection and if it has a scuff cover, I pull it off and clean everything up.
So now I'll have to get a small working coil (again) to find out how well it works on the F-75.
It was a good thing today I had the stock coil, and 2 other machines. I was almost a hour and a half drive time away from home. I don't think I found anything to brag about, but have cleaning of the finds to do - and after today, I just don't feel like it right now
Last hunt I noticed every nickel indication turn out to be a square tab. I also noticed a couple times that a penny, dime and quarter would sometime jump around on the VDI but was in the general area. I took it due to the trashy area. And twice the machine emitted a solid steady tone and wouldn't stop unless I turned the machine off then turn the detector back on. I didn't think of it much then, but today when I turned it on, the steady tone was stuck on. I checked connections and scuff cover, and still the same. . I started thinking the machine took a dump on me. I did a reset unsuccessfully. I switched to the stock coil and all was fine.
On the way home, I stopped by a friends place and tried his small F-75 coil. All was fine, so I tried mine again and the tone wouldn't stop. Swapped back to his and all was fine. So I guess my small coil lasted only a couple hunts
Of all the years of detecting and all the machines I have and had in the past, this is the first problem for me. Kind of frustrating but I guess it was going to happen one of these years. Well I did have a coil years ago that if I bumped it into a solid object like a rock or tree, it would emit a brief tone, but other than that, I continued using that coil probably 20 years or so with no other problems.
So I have never before had a coil completely fail, nor have I or my friend heard of one act the way this one did.
When one starts to act up, I usually check the connection and if it has a scuff cover, I pull it off and clean everything up.
So now I'll have to get a small working coil (again) to find out how well it works on the F-75.
It was a good thing today I had the stock coil, and 2 other machines. I was almost a hour and a half drive time away from home. I don't think I found anything to brag about, but have cleaning of the finds to do - and after today, I just don't feel like it right now
[quote tab-nabit]My small coil went out today when attempting to try it again after some weird problems last hunt.
Last hunt I noticed every nickel indication turn out to be a square tab. I also noticed a couple times that a penny, dime and quarter would sometime jump around on the VDI but was in the general area. I took it due to the trashy area. And twice the machine emitted a solid steady tone and wouldn't stop unless I turned the machine off then turn the detector back on. I didn't think of it much then, but today when I turned it on, the steady tone was stuck on. I checked connections and scuff cover, and still the same. . I started thinking the machine took a dump on me. I did a reset unsuccessfully. I switched to the stock coil and all was fine.
On the way home, I stopped by a friends place and tried his small F-75 coil. All was fine, so I tried mine again and the tone wouldn't stop. Swapped back to his and all was fine. So I guess my small coil lasted only a couple hunts
Of all the years of detecting and all the machines I have and had in the past, this is the first problem for me. Kind of frustrating but I guess it was going to happen one of these years. Well I did have a coil years ago that if I bumped it into a solid object like a rock or tree, it would emit a brief tone, but other than that, I continued using that coil probably 20 years or so with no other problems.
So I have never before had a coil completely fail, nor have I or my friend heard of one act the way this one did.
When one starts to act up, I usually check the connection and if it has a scuff cover, I pull it off and clean everything up.
So now I'll have to get a small working coil (again) to find out how well it works on the F-75.
It was a good thing today I had the stock coil, and 2 other machines. I was almost a hour and a half drive time away from home. I don't think I found anything to brag about, but have cleaning of the finds to do - and after today, I just don't feel like it right now[/quote]
This sounds like an experience I had on my F2 - the solid / steady tone that doesn't stop unless u turn the machine off. It turned out to be a problem with the batteries, as I tested them and one was nearly dead while the other was medium full. Perhaps it had to do with one battery being drained and the other not? Putting in new batteries resolved the problem.
Last hunt I noticed every nickel indication turn out to be a square tab. I also noticed a couple times that a penny, dime and quarter would sometime jump around on the VDI but was in the general area. I took it due to the trashy area. And twice the machine emitted a solid steady tone and wouldn't stop unless I turned the machine off then turn the detector back on. I didn't think of it much then, but today when I turned it on, the steady tone was stuck on. I checked connections and scuff cover, and still the same. . I started thinking the machine took a dump on me. I did a reset unsuccessfully. I switched to the stock coil and all was fine.
On the way home, I stopped by a friends place and tried his small F-75 coil. All was fine, so I tried mine again and the tone wouldn't stop. Swapped back to his and all was fine. So I guess my small coil lasted only a couple hunts
Of all the years of detecting and all the machines I have and had in the past, this is the first problem for me. Kind of frustrating but I guess it was going to happen one of these years. Well I did have a coil years ago that if I bumped it into a solid object like a rock or tree, it would emit a brief tone, but other than that, I continued using that coil probably 20 years or so with no other problems.
So I have never before had a coil completely fail, nor have I or my friend heard of one act the way this one did.
When one starts to act up, I usually check the connection and if it has a scuff cover, I pull it off and clean everything up.
So now I'll have to get a small working coil (again) to find out how well it works on the F-75.
It was a good thing today I had the stock coil, and 2 other machines. I was almost a hour and a half drive time away from home. I don't think I found anything to brag about, but have cleaning of the finds to do - and after today, I just don't feel like it right now
[/quote]This sounds like an experience I had on my F2 - the solid / steady tone that doesn't stop unless u turn the machine off. It turned out to be a problem with the batteries, as I tested them and one was nearly dead while the other was medium full. Perhaps it had to do with one battery being drained and the other not? Putting in new batteries resolved the problem.
[quote jim tn]What did the vdi show the piece of foil was? I've been using the small coil a lot since Christmas and have not had to make any major hunting adjustments and am digging some pretty deap wheat cents and silver dimes. Now, targets deeper then 5" do tend to be somewhat bouncy and don't give real accurate depth readings. But, I don't have a problem with that as I dig all iffy signals, anyway. I am, though, wondering about those foil readings of yours, as I've not experienced such with my small coil. HH jim tn[/quote]
I will give it another try - unfortunately I don't have the ability to create a test garden, so I will have to spend some time at a site testing.
I will give it another try - unfortunately I don't have the ability to create a test garden, so I will have to spend some time at a site testing.
bigolhorns
New member
I have tried my small coil on four hunts. I don't like it it all! I have no issues with the standard coil and always end up taking the small coil off. My small coil chatters more than the big one! I did notice the factory forgot to install the small set screw on the connector, I guess I'll have to return it.
Also the current pull tabs will hit exactly the same as a nickle. This is true on every machine I own. If you don't dig those 20-60 signals you will miss gold
Also the current pull tabs will hit exactly the same as a nickle. This is true on every machine I own. If you don't dig those 20-60 signals you will miss gold
Low-Boy/LCPM
Active member
Too bad you can't take advantage of this great small coil. It is so fast and hits those hidden targets spot on mate!
Low-Boy/LCPM
Active member
Thanks my good forum friend remember the F75 is #1 now we will wait and see if anyone can top it and soon we can see if the new coil is going to add to the beast or just be another coil. With the set up we have now I don't think we may need another new coil less they come up with something new.