Bill Ladd...sounds like you are very busy..when you get time...

[Hotcz70]

could you please elaborate on your findings about older deeper coins reading as pulltab on the F75. I have seen 2 or three posts now about these deeper coin targets hitting as pulltabs. I mainly hunt for silver coins and even on my CZ70pro I don't dig hardly anything that hits as pulltab. I am thinking of adding the F75 to my stable and this info is crucial to me. I realize you thoroughly test and retest before you post results. I also realize you are totally swamped for time right now...but any info or insight would be truly appreciated.
Thanks

 

[Bill Ladd]

Not sure of another's post, but perhaps you are reading into my post last night saying that particular Indian head was a 55? Then you look at the manual's probability chart that says this.....
aluminum pull-tab 33-55
Now, remember tabs are not all made the same, and I believe that big span was written like that basically to be safe & encompass beaver tails/round, etc. Also, you have 1/2 a tab & folded over round tails...all read different. But, I have a boxful of tabs of all different shapes/sizes at home, & they all hit alot lower than 55. More like 35-40's I believe (again I'm at work, but will look at this later). Gutta start bringing my notes to work A "high end" conductive tab in the 55 range is rare, and more like those big old pudding ones I think. We studied tabs in depth once for the Coinstrike notches....
Also, not to make excuses, but keep in mind that particlar 1882 indian head is worn pretty thin on the front & I was lucky to get a date even. So, that reading was perhaps less than normal for an Indian. I would think many would be up closer to 60 & zincs, but again this needs to be tested more. That too will bother some notchers, so it's a double edged sword....Notching & indian heads is always a challenge to the hobby.
If your looking at the photo below of the LCD, it may appear tabs go up to 55. But, don't take words in the upper blocks too literally as they basically just give you a broad idea (I usually don't even look at the squares, just the number). Again, I need my notes & will do some further testing this weekend on both tabs, indian heads, & UK coins as promiced for our friends abroad. But, I don't see a tabs issue in my testing thusfar, but perhaps a 11" indian head or one in bad soil may read lower or even higher? See, keep in mind unlike most ID units, instead of dropping down the number on a deep target...the f75 "up averages" it! From the manual...
The F75 has a tendency to up-average nonferrous targets in the proximity of iron, indicating ID numbers higher than would be obtained in an air test. This tendency is connected with the F75

 

[Hotcz70]

in the next few weeks there will be a multitude of postings and experiences. I read a post on another forum and then a post from Richardntn on this forum and I believe they both said the deeper coins they found 8" to 9" came in as pulltab....even the wheaties they found. I'm looking forward to keeping up with posts to see what others experiences are. Thanks for taking the time to respond and please update on this particular issue as you get more time on the F75.
Again...thanks for your info...I know you are very busy.

 

[Richard@BackwoodsDetectors]

Most of the wheats that I found the other day were deep and after I took some dirt out of the hole, the signals went to a high pitch...One thing that you have to factor in here is that most pulltabs aren't deep at all (unless the soil has been disturbed) and I will probably dig 100% of targets higher than foil, that are deeper than 6 iches.
I went hunting for about 30 minutes yesterday and notched out pulltabs and had zero problems. I only dug clad but they all came in as high tones. Running 4H where a nickel will produce a high tone should help too...
Something that I am going to do is watch the numbers instead of the icons...because the range is far more extensive numerically than the icons, that will definitely help. Too, pulltabs because of the lack of consistentacy in shape, tend to cause the numbers to jump around a lot, especially if you turn 90 degrees and swing again...I will dig basically anything too, that locks in on a number...
I don't know how much my evaluation is worth since I am a relic hunter and just hunt coins occasionally. Best to listen to the seasoned coinshooters here.
Best to you, RichardnTn

Authorized Fisher Dealer

 

[Bill Ladd]

With the F75, learning the number system & where tabs fall, etc. will be key for folks like yourself, especially with items in this ever tough mid-range.

Now folks accustomed to watching the ID blocks on a CZ-70 for example, being the ONLY ID & no numbers, may have difficulty overlooking those squares. But, with the F75, blocks at the top are really just a secondary, basic ID thing & really means little. It drops signals into very broad, modern ID categories. The words are there more for showing you the notch slashes.

Really it's the large sized numbers that are key & the main ID source....

The photo below shows a "block" square example. Again, this is just basic "categorizing". Looking at the words & squares together can get confusing. A 2 digit # gets you far more specific ID's....(& frankly is all I look at).

The manual explains the "blocks" & words along the top better....

PROBABLE TARGET I.D.

The probable target ID zones at the top of the LCD display represent the signal ranges produced by various coins and types of metal objects. When a metal target is detected, the microcomputer analyzes the signal and categorizes it based on what kinds of metal objects usually produce that kind of signal. The microprocessor then displays a block along the top of the LCD screen above corresponding category.

For instance, if the detected signal fits within the parameters usually exhibited by zinc pennies, the microcomputer will categorize the signal as "zinc penny". The LCD screen will then illuminate the block above the

 

[Hotcz70]

Please keep updates coming as you get to spend more time swingin'. If I can get an inch or so of extra depth in my soil on silver dimes over my CZ70pro or SE....I'll add the F75 to my bundle. I love to coinshoot.
Take care and thanks for the info

 

[Hotcz70]

my "old school" days with the xlt in the 80's...before I found the depth of the Fisher cz's. I never looked at the icons...only the numbers along with the sound. The F75 should be a winner with the combined tone ID...number ID...AND Fisher depth that has been at my fingertips since my first cz 5. I have hoped all along for a Fisher with a numeric ID along with high pitched tone ID. I have always dreamed of a "CZ70 with numeric ID". I realize the F75 is a different animal than a CZ...but it might be the meeting of both worlds for me. I believe I'll be adding one to my bundle very soon.
Thanks for the excellent info

 

[Bill Ladd]

n/t

 

[Jackpine Savage]

Hi Bill,

Just a point of clarification. Alhough the manual states the following:<p>The F75 has a tendency to up-average nonferrous targets in the proximity of iron, indicating ID numbers higher than would be obtained in an air test. This tendency is connected with the F75