Today is the first time I've been out with my F 75 that I didn't find a silver coin.Went to a school grounds and fairgrounds in a small town.I dug a bunch of quarters,dimes and a ton of pennies.Found 3 pieces of silver jewelry.They had hauled in fill dirt to both places.This detector is a clad vacuum cleaner.My silver count has gone way up since I got it.I run it in DE,sensitivity about 70,disc 6,notch 1,4 tones.Fast grab ground balance and go.For me it pinpoints like a dream.Been digging a lot more coins over 7 inches deep than ever before.Can't bring myself to hunt with the CZ much anymore.
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My experience with my F75
- Thread starter kickback
- Start date
If the site is real trashy I run sens 70,disc26,notch 36 tones 4. ground balance and go.I dug 2 wheaties tonight that were on top of another piece of metal in the ground.The ID numbers and tone were good enough to make you want to dig the target.Nickels in my soil ID 29-31.below and above this range it's junk not a nickel.Copper pennies and dimes ID very similar(number wise),81-82 it's a quarter,93 was my only silver dollar.If it jumps more than a couple of numbers up or down it hasn't been a coin,so far.If it pinpoints loud,screams at you,it has been junk.I'm going to have to get a second F75 with a small coil for a back up detector.For clad finds earlier today I found 7 quarters,18 dimes and 43 zinc pennies in one strip of grass about 8 feet wide next to a school playground,It was a short hunt.
kickback said:
Great Settings, but what's the 36 notch for? Pull tabs? I also run up the sensitivity (80-85) alot and find that if the numbers jump around and stay in high 68 to 90 and it's deep (10-12), it'll be a desireable target (sharp tones @ 90 degrees). Although my unit reads 12-14 inches it seems to be off about 2" less than the reading (anyone else notice this?). I also set the All Metal with a higher sensitivity 0 threshold (which bleeds through nicely), so I can switch back and forth when I get an iffy signal in Disc mode. I also noticed that it's good to re-balance every so often, as the unit is very sensitive to mineralization at these higher settings. HH RickyD
MY depth readings are WAY off. A coin 2 inches deep will show six inches deep on the readout. I hav a couple of other nagging problems and am about to send it in for the upgrade and warranty repair. I'm going to ask if they can readjust my depth readings to a more realistic vaue.
keep on diggin'
jimmyk in Missouri
keep on diggin'
jimmyk in Missouri
The notch 36 cuts out a lot of aluminum trash,pulltabs etc.My depth readings are off alot also.Lots of times a 5" coin is only 2 inches.I have a small plastic ruler in my pouch and measure lots of coins I recover.I'm not worried about the depth not being accurate as this thing is a coin magnet.My season for detecting is short enough,I'll send it back to Fisher,maybe, when it's -20 degrees outside.If I run my sensitivity much over 70 I get too much falsing.We don't seem to have a real fast sink rate for coins in this gumbo soil.If a site doesn't have a lot of trash I run sensitivty 70,disc 6,notch 1,4 tones,DE mode.I pay attention to the top two tones.This was a recommendation from Tom Dankowski.It will be interesting to see if Sunray and Detech make some accessory coils.I retried my Koss QZ 99 headphones with the F 75 last evening.They sound tinny and murky to my ears.My Grey Ghosts,NDT or DMC's are way clearer,cleaner and crisper sounding to my ears.
I've found my first and second sliver in a local park that has been ravished by detectors. I would pick out several wheaties with one of them being a 1919S which wasn't very deep at all (@5"). I was working in an area were the iron was showing up and was deeper than the wheaties. The F75 was quite stable at sens 70 (DE, 3T, 1N, 6D) and I began to expereriment. As the iron pieces could be read at a little deeper than most targets, and I could see this on the depth meter (I do use the depth meter, on the fly, alot!). I cranked the F75 to a sensitivity of 80 (mineralization @ 65, low) and would get what most would consider irratic behavior. What I would see is alot of iron falsing and a fluctuation of numbers ranging from 98 to the 60's. An occasional aluminum or less desireable reading would jump in and would read at a shallower depth. The falsing iron and deeper targets, were in the deeper range. What I noticed next was the difference of the tones. When I would run across a soft tone resembling an iron false I would do the 90 degree dance, and if it had repeatable signals at both directions and would have some sense of stability (90's to say 7
I would dig. Pulled one 1959 rosie at a depth of 9" (measure by length of the lesche digger that is 11 3/4" long). I also pulled a another rosie (1955) @ 10" with the little foot (I'm going to say I was pretty astounded by this feat also). The only problem I have run into is if you are in parks where they have dumped fill dirt, you'll find pull tabs that will read in the higher ranges (as if they were silver items) that will plague you with extra deep digging for nothing. Another thing I would do is set up the All Metal mode in a slightly lower setting and (thresh 0, pitch +3, Sens 70 or 75) would switch back and forth to re-read a target and get multiple amounts of information and sometimes would get great conflicting pieces of information. This would help in determining if a target was relevant or not (as I dug some of these to verify the difference's). Mr. Ladd if you can explain the principles of the higher ranging aluminum (pull tabs, balled up foil) false readings and have any suggestions, I would surely appreciate it. OH and by the way I'm also getting the wrong depth readings (off by two inches in most case's) especially when on shallow targets (flat on ground reads 5").
My conclusion: Would I have found the same targets at a lower sensitivity? I don't know, but until I started pumping up the F75, they weren't showing before over an area I had previously worked an MXT, ExpII, and the F75 (were they just a swing shy of being located with the other detectors, who knows).
Here's an old token from San Francisco Golden Gate Park
I would dig. Pulled one 1959 rosie at a depth of 9" (measure by length of the lesche digger that is 11 3/4" long). I also pulled a another rosie (1955) @ 10" with the little foot (I'm going to say I was pretty astounded by this feat also). The only problem I have run into is if you are in parks where they have dumped fill dirt, you'll find pull tabs that will read in the higher ranges (as if they were silver items) that will plague you with extra deep digging for nothing. Another thing I would do is set up the All Metal mode in a slightly lower setting and (thresh 0, pitch +3, Sens 70 or 75) would switch back and forth to re-read a target and get multiple amounts of information and sometimes would get great conflicting pieces of information. This would help in determining if a target was relevant or not (as I dug some of these to verify the difference's). Mr. Ladd if you can explain the principles of the higher ranging aluminum (pull tabs, balled up foil) false readings and have any suggestions, I would surely appreciate it. OH and by the way I'm also getting the wrong depth readings (off by two inches in most case's) especially when on shallow targets (flat on ground reads 5"). My conclusion: Would I have found the same targets at a lower sensitivity? I don't know, but until I started pumping up the F75, they weren't showing before over an area I had previously worked an MXT, ExpII, and the F75 (were they just a swing shy of being located with the other detectors, who knows).
Here's an old token from San Francisco Golden Gate Park