Maybe it's just being new to the machine, but I can't seem to get it dialed in at all. I 'm never sure what tone mode to set up and other than dialing in the sensitivity and GB grab, it just seems really erratic sound wise. Is this always the case? If I'm in an 1800s house yard that has nails everywhere and a power line running along the road, I have to drop the sensitivity to about 35 to quiet it down. I use Bp mode and have been messing with the tones, but just not sure on what they are. This place has yielded coins and with the 5" coil, I get some higher readings, but all of them have been rusty nails so far. Have got a couple odds and ends that weren't, but it's just been really noisy. I have the Sunray probe attached, but think I might remove it to see if that helps at all by not going through the Sunray box for the signals. I bought the F-75 used, so hope its not an internal issue. I doubt it is. I'm going to try to use RoninWV setup with the Bp/Disc 65/3tones/Sens 85 and see what happens, but not really expecting much change. Sensitivity will probably need dialed way back from that 85.
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Frustrated F75 LTD
- Thread starter strycker
- Start date
Kickindirt
Member
Im a fairly new f75 user can agree with pretty much everything u just said. The way the f75s discrimminate iron was a little diff than i was use to. Try running in de mode, de has the fastest recovery mode. I also run with 0 discrimmination or set it to 6, this will take care of all the little nails. Give it time it will start sounding better the more u use it. My f75se will not really give a accurate id on anything over three inches deep, dont matter the mode. Also the confidence meter only shows good on junk targets so dont go by that either lol. Ive prob got about 60 hours on mine now and am starting to be able to tell what is what finally. 
sprchng
Well-known member
The rule is to start where it's quiet and work into the noise. I found quiet was achieved at factory settings and sensitivity down to 25 if it GBs above 85. Below that GB number it was substantially more well mannered but the sensitivity to iron mineralization and EMI makes it a PITA to use at higher numbers. I seldom hunted mine above 40 and was never able to use BP mode or Delta tones with any effectiveness unless you want to dig up the entire site.
Thanks, will be giving it a try tonight and will think about the settings. I feel like I change settings every 15 minutes with this machine. I will be trying it out in a mowed field where a cut reale was found today. I went over that same area last night with my AT Pro but it never picked it up. Some one else out hunting with my buddy this morning was in the same area and found it with an AT Pro of all things. That really gets me. I'm going to run the 5" coil to hopefully hit better on tones. Will see what happens. I like all metal mode, but this site has too much going on. Plus the mowed area is like alum can shrapnel from the road which makes if even more difficult. We'll see.
Coin Rescue Inc
Well-known member
I am a newer user since May.
I am having success with mine.
I would suggest starting with some simple settings.
Also using high Sensitivity is not for beginners. The machine will pick up too much and confuse you.
I can pick out any coin from 5" down using a sensitivity of 5. Discrimination of 4, 15 or 25 depending what you want to hear.
Notch can be set a 1 and use De, PF or bp. At low power you can here a coin ping right next to a junk ping. Example I had a penny and dime 2 inches apart in one hole. I got separate pings on both using DE. That was an eye opener. I was using 4H tones. One med and one high tone.
Once you gain confidence with low power move up slowly to 20, 30, 40. That will provide deeper readings and more targets mixing so it takes practice on what you hear.
Another good setting that is quiet is Discrimination of 15, notch 40, process PF, sensitivity no more than 60.
Also incorrect ground balance can make it noisy. Check you auto GB. Memorize the number and go to manual ground balance and raise the setting by 2 points. That will eliminate extra noise from soil variations. Discrimination mode has auto gb, All metal motion does manual gb. That is where you adjust the setting up two points.
HH
I am having success with mine.
I would suggest starting with some simple settings.
Also using high Sensitivity is not for beginners. The machine will pick up too much and confuse you.
I can pick out any coin from 5" down using a sensitivity of 5. Discrimination of 4, 15 or 25 depending what you want to hear.
Notch can be set a 1 and use De, PF or bp. At low power you can here a coin ping right next to a junk ping. Example I had a penny and dime 2 inches apart in one hole. I got separate pings on both using DE. That was an eye opener. I was using 4H tones. One med and one high tone.
Once you gain confidence with low power move up slowly to 20, 30, 40. That will provide deeper readings and more targets mixing so it takes practice on what you hear.
Another good setting that is quiet is Discrimination of 15, notch 40, process PF, sensitivity no more than 60.
Also incorrect ground balance can make it noisy. Check you auto GB. Memorize the number and go to manual ground balance and raise the setting by 2 points. That will eliminate extra noise from soil variations. Discrimination mode has auto gb, All metal motion does manual gb. That is where you adjust the setting up two points.
HH
Well I will certainly give those settings a try as well. I think the 40 notch is a little high in a place with historic significance, but I will at least try it around 25. There are definitely nails everywhere. I'm hoping that the 5" coil will help. I'll have to concentrate my efforts though to a specific location and see what happens. Hopefully this will produce some good results.
Coin Rescue Inc
Well-known member
The 5" coil is the best choice. It is all I use.
digsgti
TROLL
I find the chatter to be much more tolerable in 2 tones vs using the higher tones. I'll run it wide open if I can but if Im fatigued or interference seems too high I'll increase disc to 25 and turn sens to about 70-80. The F75 takes some time to get used to but it can be a very rewarding machine.
Don't forget to use the freq shift.....it does help a bit. My ltd quiets down when the coil is to the ground and is noisier when raised, and I run it all out, 99 sens, 0 disc, 4 tone, any coil,.. that being said, I've used the 75 since it came out, so maybe I'm just used to it. My newer ltd is noisier than my original 75.
Welcome to the forum CRInc.......You made a type-o....The f-75 doesn't have a auto GB, it has 'fast grab' using the toggle along with pumping the coil.
There is scuttlebutt about a future upgrade for the ltd's and one of them is supposed to quiet it down from interference....we'll see.
Another point...interference from other detectors. You may have to have a certain distance between you to alleviate interference.
If you're detecting with a buddy using an explorer, remind them to do a noise cancel (great feature).
Welcome to the forum CRInc.......You made a type-o....The f-75 doesn't have a auto GB, it has 'fast grab' using the toggle along with pumping the coil.
There is scuttlebutt about a future upgrade for the ltd's and one of them is supposed to quiet it down from interference....we'll see.
Another point...interference from other detectors. You may have to have a certain distance between you to alleviate interference.
If you're detecting with a buddy using an explorer, remind them to do a noise cancel (great feature).
Go back to factory settings. Hold the red button down while pushing the ground grab lever forward and turn on the machine. Don't change anything. Throw some coins bullets, buttons, jewelery whatever on the ground and PRACTICE. You have a machine that will serve you well. The factory settings will provide better than average depth and with some practice will find most anything you are looking for. If EMI is a bad problem change locations. The new F-75s are much better than the older models as far as EMI go. DO NOT GET DISCOURAGED and remember do not get off those factory settings until you are ready. You will know when to change your settings. Confidence in yourself and your machine takes some time but it will come and you will be glad. Good luck and remember the F-75 is a proven machine just take your time. HH 
Yes, a reset to the default settings gets a fairly quiet set up. From there you can still turn the sensitivity down if needed to make it quiet and still detect targets at good depths.
I am in a mostly suburban area and have only hunted a few places where I could crank the sensitivity up into the 90's and start to hear the little hiss of the noise floor. No matter, I've dug quarters in the 7 to 8 inch range when hunting within a few feet of a power panel that was humming and letting the detector know it was there; and at a sensitivity of 10 to quiet it down, running in BP mode.
Don't be too concerned about running low sensitivity settings. Do the reset and then run sensitivity where it is quiet enough for you to feel comfortable hunting.
Cheers,
tvr
I am in a mostly suburban area and have only hunted a few places where I could crank the sensitivity up into the 90's and start to hear the little hiss of the noise floor. No matter, I've dug quarters in the 7 to 8 inch range when hunting within a few feet of a power panel that was humming and letting the detector know it was there; and at a sensitivity of 10 to quiet it down, running in BP mode.
Don't be too concerned about running low sensitivity settings. Do the reset and then run sensitivity where it is quiet enough for you to feel comfortable hunting.
Cheers,
tvr
my favorite settings for emi areas is bp mode 1+ tones disc at 15 sense between 20 and 50 you will find in 1+ or 2+ tones that the emi is easier to listen to than running 3 or 4 tones like everyone is saying you can still get good depth with lower sense settings keep at it good luck
WV62
Well-known member
strycker,
I think you may be trying to hard.
Your best friend with the F75 is the factory reset, I do a reset at the start of just about all my hunts.
I would suggest not using any notches until you get a good feel for the machine. If you play with the notches for sure do a factory reset after. You can get some settings in there that will really mess up a days hunt.
I know when I first got my F75 using the 3 tones just about drove me nuts. I started using 1 tone and 1F and that made a big difference while I got the hang of just detecting with the F75. Now I run the tones and don't think to much about it. I noticed you stated you were going to try my settings at disc 65 and sensitivity at 85. Those settings are okay but with running max disc there is not much need for tones. Because your low tones are all disc out. Now I run disc 15, 3 tones, and the boost processor, sensitivity 50 to 85.
Now I have learned to watch my numbers, and the confidence meter to get those coins close to trash targets. If you get a target and see like 81 pop up several times and that confidence starts to jump up a few bars, you better dig it, it is a quarter and around here if it is 6" or more it is silver one.
Ron in WV
I think you may be trying to hard.
Your best friend with the F75 is the factory reset, I do a reset at the start of just about all my hunts.
I would suggest not using any notches until you get a good feel for the machine. If you play with the notches for sure do a factory reset after. You can get some settings in there that will really mess up a days hunt.
I know when I first got my F75 using the 3 tones just about drove me nuts. I started using 1 tone and 1F and that made a big difference while I got the hang of just detecting with the F75. Now I run the tones and don't think to much about it. I noticed you stated you were going to try my settings at disc 65 and sensitivity at 85. Those settings are okay but with running max disc there is not much need for tones. Because your low tones are all disc out. Now I run disc 15, 3 tones, and the boost processor, sensitivity 50 to 85.
Now I have learned to watch my numbers, and the confidence meter to get those coins close to trash targets. If you get a target and see like 81 pop up several times and that confidence starts to jump up a few bars, you better dig it, it is a quarter and around here if it is 6" or more it is silver one.
Ron in WV
Coin Rescue Inc
Well-known member
Steve O said:
I have just gotten an F75SE in the last month and half and know what you are talking about...it is noisy. Being accustom to the Etrac the f75se is
a lot different.....I took it to a fair grounds close to my house the other day that I hunt a lot..The EMI was real real real bad and I did not know that
a problem like existed there with the Etrac....I had to run the sen.at 20 in bp mode to quieten it down...surprise surprise - I dug a zinc and a dime
at 8 inches and both came out of the same hole....went to a park the next day out in the country and could run sen. at 85 with no problem and
found dime at 11 inches...not accustom to digging that deep on dimes with the Etrac...and I have no Idea what I am doing the the F75 at this time.
I do see a lot of potential in it and like the other post said, it will take time and a lot of practice, but I feel that it will pay off if you stay with it..
HH
eek (Elton in Mobile)
a lot different.....I took it to a fair grounds close to my house the other day that I hunt a lot..The EMI was real real real bad and I did not know that
a problem like existed there with the Etrac....I had to run the sen.at 20 in bp mode to quieten it down...surprise surprise - I dug a zinc and a dime
at 8 inches and both came out of the same hole....went to a park the next day out in the country and could run sen. at 85 with no problem and
found dime at 11 inches...not accustom to digging that deep on dimes with the Etrac...and I have no Idea what I am doing the the F75 at this time.
I do see a lot of potential in it and like the other post said, it will take time and a lot of practice, but I feel that it will pay off if you stay with it..
HH
eek (Elton in Mobile)
REVIER
Well-known member
eek said:
I have had the same experience using my F70, but I did have about 1000 hours hunting with the F2 at max power and learned that there is a method to that madness of constant audio tones and jumping numbers no matter what power levels you hunt with, low or high.
Even with all my knowledge of the F series language the F70 at first seemed unintelligible, but as I kept trying I got to the point that one day everything started to click and I realized that there is another language on this Fisher too, a more hidden one that once you learn to read the clues these top end Fishers can tell you much.
Most owners of these things that took the time to learn them have stated in many posts that no matter what is going on in those tones and in the screen, if these things roll over a good target it will find a way to tell you one way or another...our job is to learn to understand these indicators which does take a little time but well worth the effort when you finally do.
I slowly over time kept raising the power levels to pretty much the highest they can go and got comfortable with them, enough so that like eek I found an Indian head cent spill at 8" in an area with a huge amount of EMI and jumping going on all around in the tones and on the screen but like I said, it still told me something good was down there.
I also have been hunting a very difficult site with very little EMI but has an almost unbelievable amount of iron from very tiny to huge and found that contrary to most thinking of hunting a site like this at low sense and lots of disc going the opposite way and maxing out the power levels and all settings worked and worked better for me than anything else I have ever tried before at this place.
http://www.findmall.com/read.php?91,2091738
Now I am not saying you have to do it this way, I am a little crazy and I have learned to ignore all the falsing and noise and jumping I see and hear and look for the true good signals and numbers when they pop up and got pretty good at it, something that most would never do that are looking to hunt in a more quiet environment.
What I am saying is that these Fishers take a little time to tame no matter what settings you use that makes it more comfortable for you and fun, and I also know is that at all settings from super high to very low you will be surprised at how deep these things can really go and how accurate they can be.
You just need to learn a little more of the language, that's all, soon it will all make sense and it will be smooth sailing from then on if you don't give up and push through and give it some more time to tame this beast.
You are not alone, many have absolutely given up at this point you are at and can't rip these things up enough on the forums, but those of us that kept going eventually learned to love them more than you might think possible.
Depending on the sites you hunt. All the noise may not be EMI. The F75 processor resets so fast targets you do not hear with other detectors sound off on the F75 series detectors.
Not saying that is your case Sir..and certainly not suggesting you do not know what's happening in your detecting areas.. Just a thought, and knowledge from using the 75 myself. If you get a lot of signal noise try digging a few of those sounds ..see if it is targets.. Or small junk items. or like you say EMI interference. Reset the discrimination if it's targets..
On the right sites some of those 50's readings can, and will be very old US coins...........
Not saying that is your case Sir..and certainly not suggesting you do not know what's happening in your detecting areas.. Just a thought, and knowledge from using the 75 myself. If you get a lot of signal noise try digging a few of those sounds ..see if it is targets.. Or small junk items. or like you say EMI interference. Reset the discrimination if it's targets..
On the right sites some of those 50's readings can, and will be very old US coins...........
Wow this topic went crazy. I did have a bit of luck on Friday with the 5" coil . I was testing out with BP and DE mode, sense around 50 and disc 15 I believe. I managed a 1733 KG II Half Pence (well worn) and it was right along side an old stump. Tree has been gone a long time. Also hit a dime, 6 pennies and a quarter. Kind of amazing as I know others had detected that same spot previously, so I don't know if they missed them or passed them up. It was a banner day at that site. Some other pulls (not by me sadly) were an 1800 US Half Cent, 1718 KG II Half pence, 1723 1/4 cut Reale. So I KNOW there is more to be found, just need to dial it in. I won't be too frustrated with the settings and will try out the factory reset to see if that helps out. I think the 3 tones worked rather well for me there. I didn't have too much interference. I will just dial back the sensitivity if need be to quiet it more. It's definitely going to take some getting used to.