I have wanted to post my findings on an occurrence that happened to me several times a couple years ago in regards to the Fisher F75 LTD, but I must give a little history beforehand.
I originally migrated from the Tesoro line of detectors to the Fisher series around 2008 mainly at the advice of a very special friend named Gene Scullion. Prior to Fisher coming out with the F75, he too had been a die-hard Tesoro user. Well any way I took his advice and purchased the F75 and my finds started to increase at a fantastic rate compared to what my Tesoro machine was finding. Within 3 months or so, I had found more silver than a total of 5 years prior with other machines. Well as time went on and Fisher developed the F75 LTD, I had the urge to trade up and did only to find a few areas where I had to turn the LTD down to 27-29 just to be able to hunt in any amount of stability. Now being a stickler for details and record keeping, I started recording each problem I thought I had with the LTD until I finally sent it back to the factory for a check-up. A few days later, a rep from Fisher called only to state that the machine met the entire defined test and that they could find nothing that would cause the problems I was seeing so they sent it back. Not being satisfied I began testing again and finally thought I had the solution, trade for a multi-frequency machine (Minelab) in hopes of correcting the ground and EMI problems I was experiencing, but shortly after receiving the new machine I realized I had the same problems, but in different ways. Now, 15 months later I want to report my findings on both machines.
Being good at math, I started with the sensitivity settings of the LTD.
At several hunting locations, I had to turn the LTD down to the range of 27-29 to hunt.
With the Minelab running in auto sensitivity, the machine settled in on 8 out of 30 and it was still a little unstable.
Doing the math on the LTD revealed a setting of 27 out of 99 was about 27% of the maximum sensitivity setting for this machine.
Now on the Minelab a sensitivity of 8 out of 30 was also 27% of the maximum sensitivity setting for the machine.
When I noticed the similarities, I realized the LTD was not the problem but a combination of both ground and area that caused my original problems.
I can honestly say the Minelab has not found my deepest coin to date, but the LTD has. I could write many more comparisons, but for times sake I will stop right here.
Point to remember, when you are in an area and your machine acts up, there is a real world reason for the problem and the machine is conveying to you there is something wrong and it is up to you, to both listen and take action.
Mark Gillespie
I originally migrated from the Tesoro line of detectors to the Fisher series around 2008 mainly at the advice of a very special friend named Gene Scullion. Prior to Fisher coming out with the F75, he too had been a die-hard Tesoro user. Well any way I took his advice and purchased the F75 and my finds started to increase at a fantastic rate compared to what my Tesoro machine was finding. Within 3 months or so, I had found more silver than a total of 5 years prior with other machines. Well as time went on and Fisher developed the F75 LTD, I had the urge to trade up and did only to find a few areas where I had to turn the LTD down to 27-29 just to be able to hunt in any amount of stability. Now being a stickler for details and record keeping, I started recording each problem I thought I had with the LTD until I finally sent it back to the factory for a check-up. A few days later, a rep from Fisher called only to state that the machine met the entire defined test and that they could find nothing that would cause the problems I was seeing so they sent it back. Not being satisfied I began testing again and finally thought I had the solution, trade for a multi-frequency machine (Minelab) in hopes of correcting the ground and EMI problems I was experiencing, but shortly after receiving the new machine I realized I had the same problems, but in different ways. Now, 15 months later I want to report my findings on both machines.
Being good at math, I started with the sensitivity settings of the LTD.
At several hunting locations, I had to turn the LTD down to the range of 27-29 to hunt.
With the Minelab running in auto sensitivity, the machine settled in on 8 out of 30 and it was still a little unstable.
Doing the math on the LTD revealed a setting of 27 out of 99 was about 27% of the maximum sensitivity setting for this machine.
Now on the Minelab a sensitivity of 8 out of 30 was also 27% of the maximum sensitivity setting for the machine.
When I noticed the similarities, I realized the LTD was not the problem but a combination of both ground and area that caused my original problems.
I can honestly say the Minelab has not found my deepest coin to date, but the LTD has. I could write many more comparisons, but for times sake I will stop right here.
Point to remember, when you are in an area and your machine acts up, there is a real world reason for the problem and the machine is conveying to you there is something wrong and it is up to you, to both listen and take action.
Mark Gillespie
