i have a regular f 75 its been back to fisher couple of times. reset is 7.7 and has new coil and board. airtest #"s dead on, but in the ground my #"s are all over the place also. yesterday i dug 5 pull tabs that id at 70. it cost lots of money to send it in and come back no different. I have a cz7a pro, f19, deus, ctx, f75 is the worst.
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Dumbing down the F75
- Thread starter tnkayaker
- Start date
basstrackerman
Well-known member
Well idk then buddy. Mine locks on to very deep coins mixed with trash...what i mean is yesterday while hunting a park with a detecting buddy , a park i have been hunting hard since 1980's, and knowing most everything is deep i found 4 wheaties and a v-nickle ..the wheaties were all 8-10" deep.. Ive ran many diff detectors in this park and for the most part good finds have dried up.. The f70/f75ltd2 keep finding goodies.. All of the wheaties gave great tone and good numbers only varying 5 numbers or so..the nickle did its usual number dance with great tone.. Most of my older nickles from buffalos to v's to sheilds tend to give jumpy id's in the 30's to 50 but im used to it and almost always know what it is.. I find more nickles with the f series detectors than with any others..so i dont mind jumpy numbers on nickles 
EtracTom-AdirondacksNY
New member
Yes wet ground makes the targets come alive and the detector goes deeper to find targets.
When targets like rust and coins are wet they have a bigger halo around them. When the ground dries out you will find it quieter and maybe it will read better for you but most machines will loose some depth especially when the ground is dry and hard as a rock sometimes in deep summertime.
If in DISC mode you as Charlie said need to sweep fast and you may not have hit the sweet spot on the coil over the target so getting all those tone.
In BP or boost mode it says to go slower as the processing takes a bit longer because it punches down deeper and you can run with the coil 6 or more inches up off the ground in that mode.
Normally I run coming from an Etrac with my coil on the ground most all the time on all my different detectors I have that I use as that is how they get the best depth and the ground variances like the ups and depressions wont make the machine sound off . This is what running the ground balance slightly higher is supposed to take care of.
Like mentioned run ground balance slightly higher than what it reads after ground balancing or leave it at the factory setting to try to quiet it more. I generally leave my machines at default ground setting like DEUS is 90 and close to same for AT PRO. Here my ground is 85-87 anyways so 90 works here.
Also you can go through the different F1-F7 channels to see if one is more quieter than the others for that area.
When targets like rust and coins are wet they have a bigger halo around them. When the ground dries out you will find it quieter and maybe it will read better for you but most machines will loose some depth especially when the ground is dry and hard as a rock sometimes in deep summertime.
If in DISC mode you as Charlie said need to sweep fast and you may not have hit the sweet spot on the coil over the target so getting all those tone.
In BP or boost mode it says to go slower as the processing takes a bit longer because it punches down deeper and you can run with the coil 6 or more inches up off the ground in that mode.
Normally I run coming from an Etrac with my coil on the ground most all the time on all my different detectors I have that I use as that is how they get the best depth and the ground variances like the ups and depressions wont make the machine sound off . This is what running the ground balance slightly higher is supposed to take care of.
Like mentioned run ground balance slightly higher than what it reads after ground balancing or leave it at the factory setting to try to quiet it more. I generally leave my machines at default ground setting like DEUS is 90 and close to same for AT PRO. Here my ground is 85-87 anyways so 90 works here.
Also you can go through the different F1-F7 channels to see if one is more quieter than the others for that area.
WV62
Well-known member
I have picked up a few things that is for sure problems with the machines, one is the loose control head and the double reading on the depth. Mine had both those problems and I listed them in my letter when it went in for up upgrade. I can tell they worked on both but the depth reading is still off, but not nothing like double. The control head still moves with the push pull of the plug but not like it is going to fall off now. If you pull the foam down a little at the top of the hand grip you will be able to get to a screw that you can tighten up the control head.
As for the other problems I can't tell if they are machine problems or not. Here are some settings that the machine should run with.
Like was said above do a factory reset.
Go with DE processor
Do a ground balance
Set disc to 65 max, lets get away from some of the trash
Set tone to 1 or 1F,
Sensitivity set back to the old default 60
Until you are for sure the machine is okay do not mess with any notches, you can get fancy later after you get the machine running.
If you can [size=medium]hunt[/size] with the above settings I would say the machine is okay, if not I am thinking it is time to call FT and get it checked out.
Also I am not suggesting that the above settings are something you need to run forever, they are just for checking out the machine. Once you know the machine is right you can go back and change the settings.
Ron in WV
As for the other problems I can't tell if they are machine problems or not. Here are some settings that the machine should run with.
Like was said above do a factory reset.
Go with DE processor
Do a ground balance
Set disc to 65 max, lets get away from some of the trash
Set tone to 1 or 1F,
Sensitivity set back to the old default 60
Until you are for sure the machine is okay do not mess with any notches, you can get fancy later after you get the machine running.
If you can [size=medium]hunt[/size] with the above settings I would say the machine is okay, if not I am thinking it is time to call FT and get it checked out.
Also I am not suggesting that the above settings are something you need to run forever, they are just for checking out the machine. Once you know the machine is right you can go back and change the settings.
Ron in WV
you need to follow a specific protocol if you want better/tighter TID numbers.
Find the center of the target, and then make a few fast/crisp passes over it. (fairly wide passes, NOT a minelab wiggle) Its extremely hard to make a pass that's exactly like a previous one, and if it varies a bit, so will the TID. Finding the exact center of the target and making fast sweeps over it will increase the accuracy a great deal.
Find the center of the target, and then make a few fast/crisp passes over it. (fairly wide passes, NOT a minelab wiggle) Its extremely hard to make a pass that's exactly like a previous one, and if it varies a bit, so will the TID. Finding the exact center of the target and making fast sweeps over it will increase the accuracy a great deal.
Coin Rescue Inc
Well-known member
I did an hour and a half hunt this evening in 43 degree weather.
I don't consider the F75 to be chatty. I guess I am a coin hunter. Maybe I learned to ignore the off signals that aren't coins?
I never hunted in zero decrimination prior to the upgrade but now I like it on 2L or 3H tones. In the short hunt today I dug up 16 coins, 6 Quarters, 5 dimes and the rest pennies. I started passing up pennies. The ID for the coins was right on and repeatable. I have no trouble finding coins. Some were 6 to 8" deep using the smaller coil. A bottle cap will sound in high like a dime or quarter but sliding the coil off it gives the tell tail iron grunt.
I don't consider the F75 to be chatty. I guess I am a coin hunter. Maybe I learned to ignore the off signals that aren't coins?
I never hunted in zero decrimination prior to the upgrade but now I like it on 2L or 3H tones. In the short hunt today I dug up 16 coins, 6 Quarters, 5 dimes and the rest pennies. I started passing up pennies. The ID for the coins was right on and repeatable. I have no trouble finding coins. Some were 6 to 8" deep using the smaller coil. A bottle cap will sound in high like a dime or quarter but sliding the coil off it gives the tell tail iron grunt.
Hi guys, just checking back in. Got in a 7 hour hunt today in mist and drizzle. Did much better with the 75 thanks to your suggestions. I'll post up details on Monday when I get back to my PC. Not good typing on the phone. Got a huge pouch of clad and a couple rings. One tungsten and one .925. Details to follow
Mark
Mark
Coin Rescue Inc
Well-known member
Sounds good!!!!!!!
Charlie P. (NY)
New member
Great to hear! There is definatly a learning curve (I'm still on mine).
Up averaging will add numbers to any particular target, due to co located targets and or certain types of soil (especially if there are a lot of rust flakes in it). That's not a bad thing. It may make a fringe target more "seeable". The downside is that you'll occasionally dig a target that reads a bit higher than it might otherwise, but any of those "tabs" may have been rings or older coins. Gotta dig it all to get it all. Since I'm primarily a relic hunter, I don't care much about Vid numbers, and am much more concerned about just getting a "diggible" signal.
Hi everybody, original poster here checking back in. I got up Saturday at the crack of dawn and headed up to a few spots North of town to get in some F75 practice. Using some tips from you guys and some others I have read about I went with the following settings. Sense of 29 (seems to settle the TID down a bit), disc of 20(wanted to get rid of some of the smallest foil junk without sacrificing some gold), tones 3, boost process(seems to elongate the tones) and ground balance of 60 manually added 1 or 2 numbers to this.
First site was a tot lot. Not very big and it is pretty new. But it does have a deep layer of rubber chips. Clean and easy to dig in! I love these rubber chip totters. The weather has been to poor lately to allow many to get out in the parks so I only got a few pennies and a dime. Thought about hitting the turf in the park but decided to head another 15 miles up the road to a larger town with a large park. Hit the large totter first. This one is wood chips. got a few more pennies, a couple dimes, and a bluetooth headset that was an eyeball find near the swings. Same story here, not many people have been out lately, so not many drops. Headed into the grass around the tot lot. Got the girls .925 porpoise ring next to a bench. I almost didn't dig it because it bounced around so much. But had a fairly consistent hi tone. It makes sense because it is not a solid circle. Next target was a solid 54 on the meter. A good hard hit and I was thinking large gold. Instead it was a mens tungsten carbide ring at about two inches. I was going to head over to the soccer fields next to check the sidelines, but a bunch of cars showed up with kids to play soccer so I headed over to the ball diamonds for some privacy. Four ball fields back to back with a concession area in the center. Mega clad here so I scooped up a bunch. the coins hit solid, with good TID once the coil was centered up. I was learning to call the targets before digging. I dug some of the iffy, fluctuating tones and most of them were bottle caps, tabs, can slaw, etc.
Headed over to the frisbee golf area. I keep having visions of a ring flying off as a frisbee is thrown. This is a large area with very few targets. All I found was a house key that was a semi good low zinc signal and a bunch of can slaw that at times sounded good. I was still having a trouble with some one way tones, and especially the tones that are high tone in one direction and mid tone in the other. Or sometimes they hight tone for three or four swings and then resolve to nothing but mid tones on subsequent swings. A few of these were dug and turned out to be can slaw.
Headed over to a grass volley ball area. Lots of junk in the ground and a few coins in the mix too. The multi tones were swapping around again and wearing on me. Decided to try one tone (1n) Hmmmm, pretty interesting. It stops a lot of falsing. Junk just breaks up and the good signals come in clear. You also get a lot of target information. Size, depth, roundness, all from a single tone. It really helps get the coil centered up quickly over the target without using the pin point trigger. Speeds up the hunting a lot. This may grow on me!
The misty weather was wearing on me, my shoes were soaked through and I was ready to head out. Put it back in 3 tones for the walk back to the truck just cherry picking high tones. Near the truck I got one of those multi tone signals. Would not settle down to one tone or TID. I decided to dig it. From 4 inches came a seven coin spill consisting of dimes, pennies and a nickel. Wow, the 75 was just trying to tell me it was all there.
Tally for the 7 hour day was approx 100 coins, all clad. Haven't cleaned it yet, just poured the pouch out on a rag so I could get a count. And the two rings.
So, I am improving. There are a couple things I wish the F75 had. I wish it had a separate threshold control, and a 4 tone mode like the F5 with the unique nickel tone. My ears are tuned to that and need to be re-trained. A few things I love aboout it over the F5 are the pistol grip, trigger pin point and GB, using AA batteries, and probably worth the price of admission in itself, the location of the coil connector! You can actually get it screwed on and off easily!
Thanks again everybody for your help. I hope I return the favor and maybe this post will help others
Mark
First site was a tot lot. Not very big and it is pretty new. But it does have a deep layer of rubber chips. Clean and easy to dig in! I love these rubber chip totters. The weather has been to poor lately to allow many to get out in the parks so I only got a few pennies and a dime. Thought about hitting the turf in the park but decided to head another 15 miles up the road to a larger town with a large park. Hit the large totter first. This one is wood chips. got a few more pennies, a couple dimes, and a bluetooth headset that was an eyeball find near the swings. Same story here, not many people have been out lately, so not many drops. Headed into the grass around the tot lot. Got the girls .925 porpoise ring next to a bench. I almost didn't dig it because it bounced around so much. But had a fairly consistent hi tone. It makes sense because it is not a solid circle. Next target was a solid 54 on the meter. A good hard hit and I was thinking large gold. Instead it was a mens tungsten carbide ring at about two inches. I was going to head over to the soccer fields next to check the sidelines, but a bunch of cars showed up with kids to play soccer so I headed over to the ball diamonds for some privacy. Four ball fields back to back with a concession area in the center. Mega clad here so I scooped up a bunch. the coins hit solid, with good TID once the coil was centered up. I was learning to call the targets before digging. I dug some of the iffy, fluctuating tones and most of them were bottle caps, tabs, can slaw, etc.
Headed over to the frisbee golf area. I keep having visions of a ring flying off as a frisbee is thrown. This is a large area with very few targets. All I found was a house key that was a semi good low zinc signal and a bunch of can slaw that at times sounded good. I was still having a trouble with some one way tones, and especially the tones that are high tone in one direction and mid tone in the other. Or sometimes they hight tone for three or four swings and then resolve to nothing but mid tones on subsequent swings. A few of these were dug and turned out to be can slaw.
Headed over to a grass volley ball area. Lots of junk in the ground and a few coins in the mix too. The multi tones were swapping around again and wearing on me. Decided to try one tone (1n) Hmmmm, pretty interesting. It stops a lot of falsing. Junk just breaks up and the good signals come in clear. You also get a lot of target information. Size, depth, roundness, all from a single tone. It really helps get the coil centered up quickly over the target without using the pin point trigger. Speeds up the hunting a lot. This may grow on me!
The misty weather was wearing on me, my shoes were soaked through and I was ready to head out. Put it back in 3 tones for the walk back to the truck just cherry picking high tones. Near the truck I got one of those multi tone signals. Would not settle down to one tone or TID. I decided to dig it. From 4 inches came a seven coin spill consisting of dimes, pennies and a nickel. Wow, the 75 was just trying to tell me it was all there.
Tally for the 7 hour day was approx 100 coins, all clad. Haven't cleaned it yet, just poured the pouch out on a rag so I could get a count. And the two rings.
So, I am improving. There are a couple things I wish the F75 had. I wish it had a separate threshold control, and a 4 tone mode like the F5 with the unique nickel tone. My ears are tuned to that and need to be re-trained. A few things I love aboout it over the F5 are the pistol grip, trigger pin point and GB, using AA batteries, and probably worth the price of admission in itself, the location of the coil connector! You can actually get it screwed on and off easily!
Thanks again everybody for your help. I hope I return the favor and maybe this post will help others
Mark
Bryannagirl
Member
Amazing report. - I have T2 SE2 DST but I am upgrading to the F75 to pickup a few more features. I have used 4 tones, 3 tones with Bottle Cap, and 2 which is like 1 with iron grunt. I too was having issues with one way hits. Most of the time it means there is iron or some other item masking the good item. Well sometimes good item. Your discrimination has an impact on this as well. So if it goes silent it may mean the second or masking target is below your discrimination setting. I am sharing what I was told. I will be spending more time looking into one way hits since something is being masked.
Question what coil where you hunting with. Also have you tried FA mode. I hated it at home but really like it in trashy parks. Give it a try someday see what you think. It does reduce depth a little so you may consider upping sensitivity.
Last I did not here you mention re ground balancing. - did you change your ground balance for each location or leave it at 60 + 2. If not maybe that is why things got a bit more chatty during the day.
Question what coil where you hunting with. Also have you tried FA mode. I hated it at home but really like it in trashy parks. Give it a try someday see what you think. It does reduce depth a little so you may consider upping sensitivity.
Last I did not here you mention re ground balancing. - did you change your ground balance for each location or leave it at 60 + 2. If not maybe that is why things got a bit more chatty during the day.
Bryannagirl,
Thanks for the tips! I am using the 11" DD coil, but have the 5 DD on a lower rod ready to use at any time. I haven't tried FA yet, except for a minute or two the first day I got the machine. I re ground balanced plus one or two for each different area I moved too. Some of these areas were at opposite corners of the large park complex and I shut off the machine and drove to each location necessitating a set up each time.
I am not too concerned about depth in most of these parks. They are relatively new (10 years or so) so I am looking for stuff in the first 4 inches or less. Unlike the F5, the 75 sure does like to high tone on the first pass before it resolves to a lower conductivity target on subsequent passes. Not sure why this is, I would like to find a setting that would eliminate that, but it may be the nature of the beast or maybe I need to perfect swing speed or something.
Mark
Thanks for the tips! I am using the 11" DD coil, but have the 5 DD on a lower rod ready to use at any time. I haven't tried FA yet, except for a minute or two the first day I got the machine. I re ground balanced plus one or two for each different area I moved too. Some of these areas were at opposite corners of the large park complex and I shut off the machine and drove to each location necessitating a set up each time.
I am not too concerned about depth in most of these parks. They are relatively new (10 years or so) so I am looking for stuff in the first 4 inches or less. Unlike the F5, the 75 sure does like to high tone on the first pass before it resolves to a lower conductivity target on subsequent passes. Not sure why this is, I would like to find a setting that would eliminate that, but it may be the nature of the beast or maybe I need to perfect swing speed or something.
Mark
I've been digging with the F75 LTD for about 4 years now. It is definitely a chatty katty if you don't tame it. One of the things I do is manually ground balance it but in AM mode only. At least with my machine, improper ground balancing will give me a high tone at the end of each swing. I make sure there is absolutely no metal where I will be ground balancing it. If I ground balance in discrimination mode, I can never be sure if the ground is clear or not. Proper ground balancing will help to quiet the machine down to a reasonable level. One of the things that the F75 and other detectors do is to give a high tone on the edge of nails and other ferrous metals. Several ways to know if it's a piece of garbage is to pin point it. Once properly pin pointed, it will usually revert back to a low tone and I can move on. Another way to tell if a high signal is really a good target or a rusty nail with ground effect is to pump the coil over the target, often, this will change the tone to ferrous metal if that's what it is. Another way to try to determine if you are hitting on a coin or a piece of iron when you get a high tone it to slowly move the coil higher and higher over the target while sweeping back and forth.. Often, if it is a quarter or dime, the high tone will not change. But if it's ferrous, the tone with change as you move the coil higher over the target. Also, always keep an eye on the FE reading. If the tone is reading coin or silver but the FE meter increases, it is usually ferrous. Bottle caps almost always have a high tone, but if the FE meter increases, I can be about 85 percent sure it isn't a coin. If you are still not sure, pin pointing the target will either make the FE meter read higher or it will read zero. A zero FE is a definite dig.
I realize that all these procedures tends to slow your forward progress. But digging garbage with slow it even more.
Oh, and watch out for your cell phone interfering with your detector. When you are in a remote area, far from cell towers, your cell phone becomes very active, searching for towers by sending out pinging signals and waiting for a reply. This search can last for 30 or 40 seconds and will repeat every 4 or 5 or 6 minutes. Put the cell phone in airplane mode which effectively shuts it down. It can neither send or receive signals. Or just turn it off completely. But don't leave it behind, you may need it in an emergency.
Please don't consider me an expert on the F75 LTD. These are tips and tricks I learned from other F75 users in person and from reading on forums what others have discovered to make the F75 a more pleasant experience. I have applied these techniques and it has definitely helped. The F75 is a powerful and deep machine. Consider it like a fast sports car. Until you learn how to use it properly, you will have to slow down on the curves.
I realize that all these procedures tends to slow your forward progress. But digging garbage with slow it even more.
Oh, and watch out for your cell phone interfering with your detector. When you are in a remote area, far from cell towers, your cell phone becomes very active, searching for towers by sending out pinging signals and waiting for a reply. This search can last for 30 or 40 seconds and will repeat every 4 or 5 or 6 minutes. Put the cell phone in airplane mode which effectively shuts it down. It can neither send or receive signals. Or just turn it off completely. But don't leave it behind, you may need it in an emergency.
Please don't consider me an expert on the F75 LTD. These are tips and tricks I learned from other F75 users in person and from reading on forums what others have discovered to make the F75 a more pleasant experience. I have applied these techniques and it has definitely helped. The F75 is a powerful and deep machine. Consider it like a fast sports car. Until you learn how to use it properly, you will have to slow down on the curves.
