Depth reading on F75

[cosmic]

Is anyone else find that there pinpoint depth reading to be all over the place? I've played with my new F75 (the first one was doa right from the box!!) for a few days now and the depth readings in pinpoint are only correct or even close to correct a handfull of times in the hundred or more targets I've dug.. Doesn't matter what the depth of the coin is it reads 4" on meter and one would be 1" and another would be 6".. Even deeper targets aren't close to the reading the machine is giving me... This includes coins both shallow and deep..
Very disappointed in a thousand dollar machine that can't even get it close!! My other detector is almost always right on the money to a inch or so that only cost half as much!! So I know that sooner or later I'll end up destroying a good find because of its inaccuracy.. VDI is always jumping and doesn't lock on a number alway even a good one always varies at least 3 numbers in the VDI range.. Is this right? Seems shoddy even on a strong shallow target!! I've been through all the programs, sense high, middle ,low, discrim everywhere, and no accuracy at all!! And machine that half its price will outperform it every time in VDI and depth reading in pinpointing!! Depth seems to be great but all I've dug a depth is trash but I'm sure coins will come.. Falseing doesn't seem to bad so I'm cool with that also.. GB in allmetal motion and first then I turn on the discrimination (If any).. Is there some trick to the pinpoint depth and solid VDI or did I get another bum machine?

 

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[EZrider]

I would send it in.

 

[BamaBill]

I'm having the same trouble with the depth reading and I'm on my second machine. But, I'm hearing that practically nobody has a machine with accurate depth readings. However, if this turns out to be the only weakness on this machine I'll accept it. The first machine I had just didn't have the advertised power and the depth capability was really lacking. This machine (tested it last night when I first got it) seems to be fine in the power department, but it too is reading targets as 2-3" deeper than they are.

 

[SamsSon]

I've tried to keep up with this F75 since it came out. I know of few who like it for any great length of time.

My friend owns a detector sales and he gets them as trade-ins all the time. Most are like new.

I tried the F2 and didn't like it at all. No depth and tones were way off.

Anybody here really like that 75? Just curious.

 

[tmanfromtexas]

I have about 40 hours on mine now. I have found some nice old coins in the 8-9 inch range that the cortez and ace wouldnt even have came close to finding imo. Its easy to use, light, has many ways to set up for the area you are hunting and I can pinpoint very easily with it and so far has been ok. I agree that its build is a little lite but unless something breaks on it I will continue to use it as my main detector. I also agree that the depth guage in pinpoint is off by 2 inches but since I am aware of that I can compensate so I have no problem. TMAN...

 

[utah hunter]

The depth reading is definately not reliable at all. I have found that the sounds made from the signal and pinpointing tell me everyting about size and depth that I need to know.

I love the detector, and with it's faults I still think it is the best machine out there for me.

 

[utah hunter]

I've tried to keep up with this F75 since it came out. I know of few who like it for any great length of time.

My friend owns a detector sales and he gets them as trade-ins all the time. Most are like new.

I tried the F2 and didn't like it at all. No depth and tones were way off.

Anybody here really like that 75? Just curious.

What I like so far, after 3 weeks. I am disabled at the ripe old age of 38 and weight is an issue. The F75 is about a pound heavier than the xterra70 i bought, but I can swing the F75 a lot longer because of the balance of the machine. I mostly clad stack because I live in a newer area, and you can swing the F75 fast and it will give nice hard signals and good tones on coins and jewelry. The coil goes deep and hits hard the whole length of the coil, so with only slight overlap you can count on good signals and cover a lot of ground. I have done a few yards with the F75 where I had a chance of old coins, and found an Indian head and wheaties in a yard I had hunted in the past, along with many other detectorists. The target separation and the nice hard hits on the coins made the difference. The Indian head was right next to a hunk of iron, and I am sure that is why it had been missed so many times before. I love it and trust it, but then I have always been easy to please...

 

[cosmic]

I'm taking a wait and see attitude.. Waiting for mine to get back now and then I'll give it a good workout... If they don't get it right the first time and it doesn't work as it should or advertised I'll let the forums know about what I think.. Seems a shame that a high priced, top of the line detector, can't be tested before they send it out..If it works the way it should it will be a great detector.. If not, it will be bunch of hype like the big M detectors.. Almost sounds like the F70 is a better detector from what I've read.

 

[cosmic]

Well I sent my F75 in after a call and talking to Mike Scott.. Picked up on July 21 and received it today!! It seems it had a bad coil.. If it ever cools off and the humidity goes down some I'll give it a good workout..Even with the bad coil I did like the super fast response of it and grabbed a silver rosie a couple inches away from a tab.. If this machine will do whats advertised it will be a giant step forward...
Thanks Mike!!
I'll let you know after a good long shakedown hunt..
Ray

 

[cosmic]

Hi Jim, might go out this morning for a little until it start blazing.. I did what you asked and yes a wide open it is sputtering and spitting.. When I start to reduce the sensitivity it get pretty quiet around 96 with a occasional pop but as you stated at 95 its completely quiet... This is much better than it was as I couldn't get it to stabilize at all inside before.. I'll post when I get done later today.. Thanks for all your posts on it they are very informative, well thought out, and well written.. The posts between you and Bamabill have been great...
Later,
Ray

 

[BestAntiquities]

I don't know anything about the F75 but I've never been all that impressed by meters in general.

The only meter that did impress me somewhat was the one on my 1983 Teknetics 8500. That bady could count change down to about 5 inches. But since then the meters I've seen have been all over the place with no real consistantcy. They all were too sensitive to coil swing speed and coil angle.

Maybe in your case it's a defective machine?

I bought the F2 when it first hit the market and the meter on that particular machine was nuts. A total waist of battery power.

Hope you sove your problem.

Is anyone else find that there pinpoint depth reading to be all over the place? I've played with my new F75 (the first one was doa right from the box!!) for a few days now and the depth readings in pinpoint are only correct or even close to correct a handfull of times in the hundred or more targets I've dug.. Doesn't matter what the depth of the coin is it reads 4" on meter and one would be 1" and another would be 6".. Even deeper targets aren't close to the reading the machine is giving me... This includes coins both shallow and deep..
Very disappointed in a thousand dollar machine that can't even get it close!! My other detector is almost always right on the money to a inch or so that only cost half as much!! So I know that sooner or later I'll end up destroying a good find because of its inaccuracy.. VDI is always jumping and doesn't lock on a number alway even a good one always varies at least 3 numbers in the VDI range.. Is this right? Seems shoddy even on a strong shallow target!! I've been through all the programs, sense high, middle ,low, discrim everywhere, and no accuracy at all!! And machine that half its price will outperform it every time in VDI and depth reading in pinpointing!! Depth seems to be great but all I've dug a depth is trash but I'm sure coins will come.. Falseing doesn't seem to bad so I'm cool with that also.. GB in allmetal motion and first then I turn on the discrimination (If any).. Is there some trick to the pinpoint depth and solid VDI or did I get another bum machine?

 

[cosmic]

Took it out for a couple of hours and I'm not happy.. I'm going to try it again but unstable and erratic pretty much in every mode and sensitivity except the all metal motion(I do like that mode) to the point almost useless.. Vdi more stable then it was but id's pennies as dimes and so forth..Pinpoint depth is all over and only accurate or close a few time in the 30 or so targets.. Thought it might be the high gain, low gain in the disc. mode so I went up by 5's and its barely usable.. First Texas said it's as it should be.. Guess maybe I'm not experienced enough to run it since I've only been detecting since the early 70's with all brands high, middle and low end and both vlf and pi's.. I usually run no disc. on my detectors...Had my son follow me with my other detector and scan the same targets.. Half the price and it ran great, smooth, vdi accurate and depth reading in pinpoint was as always close..(Had it shut off until used just in case it interfered) Ran circles around the f75.. As far as depth goes wasn't anything to brag about.. Soil is mild here about 60-61 gb and fe usually at 0.. I'm gonna give it one more shot.. I was contemplating the F70 but now I'm not to sure about it since I'm having all this trouble.. I have no brand loyalty just tell it like it is ..Anyone who knows me on the forums also knows I'm a straight shooter..

 

[cosmic]

I just spent a solid hour and a half air testing with a quarter..I usually test with a dime..Every mode, de,je, pf, bc every sensitivity from 99 down in increments of 5..Every disc. level from 0 up to 65 by 5's.. Gb from 0 to 50, 60, 70, 80, 90 and 99 set in the all metal mode.. Best in discriminate mode was 8" barely 9"( broken signal) (that's from 0 and up to 65 by 5's) in all disc. modes.. All metal both static and motion (same sensitivity test as discriminate mode) from 0 up to 99 same with gb.. Best was static 10"+ a bit but I'm being kind.... Motion 9".. The bad coil air tested better!! Wheres all this depth claimed at?Do we keep sending them in the hope one will actually work correctly and do what its claimed to do!! I'm beginning to wonder if they just threw another coil on as they seem to have a problem with them and said it's good enough!! Sorry about the rant but I'm PO'ed.. Darn near any machine will do this and be stable and more accurate, even low end detectors..THIS BITES!!!

 

[BamaBill]

If you're having this much trouble with the F75, I would try the F70. Is your other machine a whites? I have an MXT and I'm not selling it either as its definitely more stable than the F75 I have. However, I guess I got lucky with my second F75 as it does get better depth than my MXT. I'm starting to use my F70 as my locate a CW camp machine, since its lighter than the F75 and it is more stable. But, once I locate a camp I'm going to try and get as deep as I can with the F75. If you're a coinshooter, I completely understand your frustration as it takes a machine with dead on ID to excel doing that and the F75 doesn't seem to be the best machine for that.

 

[cosmic]

Yes Bill, I have a M6 and it ten time the machine this 75 is..Been thinking on selling or trading the fisher for a F70, MXT or a X-terra 70.. Really wish the MXT had the tones like the M6.. I traded my other M6 in on this pos...I'm really think First Texas dropped the ball on this one!!! Not sure about the F70 since I had this experience.. Gonna try the 75 again but it looks like the only place it would be stable or get the depth advertised and in the manual is in space but the solar flares and sunspots would probably the next excuse...

 

[ALABEAR]

All I do is relic hunt with the F75 and it is not worth a dime if you don't use the All-Metal mode. It will not find nothing over 6" deep, but in the All-Metal mode it will out hunt anything I have ever used. The only thing is when you get into those camp sites that are full of iron it will take you all day to hunt them. But you will come out of the field with a bag full of relics.

 

[JackInFlorida]

I have had the F75 for a few months.

The depth seems to be fairly accurate for me. I have been hunting in All Metal Motion mode because I don't really understand what the machine is doing in discrimination mode. I was actually going to try and figure it out in the back yard today but got sidetracked.

My previous discriminating machine was an ACE 250, so maybe I'm not qualified to make comparisons, but that thing falsed all the time and I was always going over and over targets to see if they were real. With the F75, I have found that if you have a signal, you have a target. I have dug up targets from over 12 inches and the pinpointing was only off by an inch or so. I have found the poinpointing to be confused when there are multiple targets under the coil.

When I have tried discrimination mode in trashy areas, it just beeps and boops all over the place and I go back to all metal. I will acually be fine with that once I memorize the sounds. I will be setting up some test scenarios to see if I can figure out the discrimination.

BTW, I usually hunt in de mode, not je.

I also take the unit apart and transport often in a backpack, it still seems to be in good physical condition. Another post on this forum talks about when I tested it a KellyCo, I found that the setting are ultra important, not insinuating you guys haven't tried different things, but when I first took the demo unit out in the yard a Kellyco it was only air testing at around 5 inches. After playing with the modes and sensitivity, it was up around 14 inches on a penny.

Jack

 

[JackInFlorida]

Oh, BTW, are you aware that if you repeatedly pull the poinpointing switch that the pinpointing field becomes narrower? I have found that I can use it to ID a soda can bottom now when I am getting a weird reading just be pulling the switch about three times and pinpointing around the edge. You can pretty much tell how big the target is.

Jack

 

[liquid1]

Jim great test and good results...It sounds like ray has a Bad coil to me or his Battery box is loose or a Bad coil connection, this unit is super sensitive and with any of these problems it will act up..Ray you sound very experianced..Its just sad your having problems you would really enjoy this unit if it was working correctly..
Jack in florida I agree I can take and pull the pinpoint trigger and Draw a line around a target spot on..Just my experiance.I love this machine.
I truley find this unit to Be a lethal Coin,Relic,Wet sand machine..It just takes a bit of getting use to...I am finding Relics at over 8" in Disc mode with no problems..Depends on soil and Iron conditions on the setup..This machine will find an aluminum can Deeper than I want to dig in this Red Mineral Infested Clay NC Dirt....james

 

[cosmic]

Battery box is tight and this is a new coil..(I sent it in and they said it was a bad coil and everything works as it should!!) Also does anyone get the "The F75 can detect U.S. coins to a depth of up to 15-16 inches (37-40cm) under good conditions".. Page 28 of the manual.. Maybe in the vacum of space!! They just of well have said to the core of the earth!! It seems according to everyone tests that in the disc mode except for a small window in the Je mode it doesn't even get average depth.. Which also is the mode that can't be used in most of locations.. They should do away with the disc feature all together and just make it a all metal machine with tones and sell it for half the price!! (and thats pushing it!!) I did try to pull the pinpoint trigger twice this last hunt to see if the depth would be close to right to no avail..Still I'm going to try it again but I'm definitly not hopeful.. Thanks everyone..
Ray
P.S. I hope to eat crow or I just therw away a big fistfull of money!!