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F75 - how to set notch range ??

D

damiano

New member
Hello,
I have question about setting the notch.
Can anyone explain me that thing ??
I want to notch rangle about 40 to 55. Please tell me step by step when i must press menu button and when i must turn the knob....I don't know what i'm doing wrong but always it ends in the same way - i must do factory settings reset beacuse is'nt that what i want ....

Thanks for advice
 
OK, first let's talk about Notch (categories) and (ranges). Looking at page 20 in the manual you can see that the 5 (categories) ( IRON, FOIL, NICKEL, TAB and ZINC) each have two parts (ranges). So, for example, IRON has a low (range) #1 thru #7 and a high (range) of #8 thru #15. The (category) that you are interested in is the TAB (category). TAB (category) is low (range) #36 thru #45 and high (range) #46 thru #55.

When Notching OUT (not detected) desired numbers, you will have to Notch OUT (not detected) all the numbers in the same (range) as the one desired number you want to Notch OUT (not detected). For example, by Notching OUT (not detected) #40, you will also Notch OUT (not detected) all of the TAB low (range) of #36 thru #45. So what I'm saying is; you can only Notch OUT (not detected) an entire (range) but not just a single number in that (range).

Let's talk about how to tell which (range or ranges) are Notched OUT (not detected). Just to start from a common point, do a factory reset as per instructions in the manual. After factory reset, Discrimination is reset at #10. Notice at the top of the display that the (category) IRON has a full slash through it. Find a spot with no EMI and turn the DISC. to #0. Now there is no longer a slash through the word IRON at the top of the display. With the DISC. set to #0 there should be no full or half slashes through any of the 5 (categories) IRON, FOIL, NICKEL, TAB or ZINC. located at the top of the display.

Leaving the Disc. set at #0, push the MENU button until you get into the Notch menu. Notice that the number #1 is shown in the display window. There is no Notch set at this time. You know that because there are no slashes through the (category) words at the top of the display. The numbers in this menu #1 thru #65 (NOTCH) are just numbers to help you set a Notch but are never an indication of the location of a Notch. For example, if when you selected the Notch menu and if number #16 was displayed on the screen, it would only be a number and NOT an indication that FOIL low (range) #16 thru #20 has been Notched OUT (not detected).

So, in your case, after selecting the Notch menu and noticing that #1 shows in the window, turn the Notch to any number #36 thru #45 and push the MENU button again and that Notches OUT (not detected) TAB low (range) #36 thru #45. That will put a half slash through the upper left of the word TAB at the top of the display. Now turn the Notch to any number between #46 thru #55 and push the MENU button again and that will Notch OUT (not detected) TAB high (range) #46 thru #55. Now push the MENU button again to get out of the Notch menu.

You will now have a full slash through the word TAB at the top of the display. You can always see what (ranges or categories) that are Notched OUT (not detected), if any, by turning your DISC. to #0 and looking for any half or full slashes. Remember, the numbers that are part of the Notch menu are just that. Numbers to help you set a Notch and nothing else.

Ron
 
This is the one area I don't like about the F 75. The notch system is waaay too complicated. Especially if you don't do all that often. I have given up on it, since most of my hunting is relic hunting and I never notch out anything while relic hunting. The notching system for the F 70 and F 75 is MUCH easier to understand and use. I don't know who wrote the instructions for the notching system, but I have a feeling it's the same person who wrote the tax code for the IRS.:surprised:

keep on diggin'

jimmyk in Missouri
 
Jimmyk:

It's really not all that bad. Basically, the Disc. and Notch sort of work together but opposite of each other.

My thinking is that a good starting exercise for a new F-75 owner would be to suggest that she (he) do a factory reset as per the manual instructions. Then notice two things; (1) Disc. is reset at #10, (2) Notch menu has a #1 displayed but it is only a number and does NOT indicated that a low Iron Notch is set. NO Notch is set on reset!

Go back to the Disc. menu and turn the Disc. to #0. Notice that there are no half or full slashes across any of the category words at the top of the display, i.e. IRON. FOIL, NICKEL, TAB or ZINC.

Now turn Disc. to # 65 and notice that all of the category words at the top of the display have full slashes through them. On the F-75, the presence of half or full slashes through the category words will tell you what range/category are Notched OUT (not detected). The slashes are the only thing that will tell you what is, or is not, being detected.

When Disc. is at #0, none of the words have slashes, indicating that all numbers are detected. When Disc. is set at #65, all the words have full slashes, indicating numbers #1 thru #65 are not detected and #66 thru #99 are detected.\

Easiest way for me to figure where I'm at Notch wise is to turn the Disc. to #0. Now I can see if any of the category words have half or full slashes through them. Then if I decide I want to Notch OUT (not detected) a range, i.e. high NICKEL #31 thru #35, I go to the Notch menu, turn until ANY number #31 thru #35 appears in the display, then push the MENU button again to set the Notch. Push the MENU button again to get out of the Notch menu. Should be a half slash showing on the lower right half of the word NICKEL. Now #1 thru #30 are detected, #31 thru #35 are NOT detected and #36 thru #99 are detected.

Let's say I don't want to detect anything below # 65 except low NICKELS #26 thru #30.. Turn the Disc. to #65 and all the words should have full slashes through them. Now push the MENU button until you get into the Notch menu. Turn the Notch numbers to ANY number #26 thru #30 and push the MENU button again. Now push the MENU button again to exit the Notch menu. Notice the upper half of the slash over the word NICKEL has disappeared. The display now tells you that #1 thru #25 are NOT detected, #26 thru #30 ARE detected, #31 thru #65 are NOT detected and #66 thru #99 ARE detected.

Ron
 
My take on this is don`t use notch AT ALL.
Yes! you may like to notch Tabs or Whatever . But which ever you reject in that notch bracket, there will ALWAYS be something in that Bracket of discrimination you`ve notched out that Will be a good coin or item. So yes you will get rid of the annoyance but by doing so you just may reject a coin or item in the proceeds so are you willing to take that chance ? i`ve never been willing to take the chance personally. its your call.
 
Thanks for advices - now i understand that i can't notch the numbers of VID but only half or all range area.
It's very simple now for me :thumbup:
Too bad that we can't notch out numbers beacuse (likes in Whites or Minelab detectors) for example we don't want to dig only range 45-48 (that was range of bullets for example) :thumbdown:
In F75 i think we must check the numbers all the time and simply when we see numbers that we don't want to dig - don't dig it :smoke:
 
I am with Jeb. I have a lot of hours in with my F75, somewhere over 2500, and other then to see if the notch feature actually does work, I never use notch. As I mentioned in another post, I have dug 9 gold rings with my 75 and 5 read as nickels, 29-30. The other 4 read as low as 23 and as high as 55. Using notch, I firmly believe many gold rings and some older coins. like IH's, are going to be missed, IMHO. HH jim tn
 
The really unfortunate thing is that they restricted the notch so it won't notch out anything above 65. talk about stupid. There are quite a few areas where I DON'T want to dig anything from zinc penny on up and don't want to listen to the tone and disc. by ear. I also have a sneaky suspicion that the F75 will exhibit the wraparound effect.. notching out the very last segment usually cures that problem. Before the fanboys start jumping all over me (hey guys, it's not your primary sexual attribute.. just a detector), I have an F75 and the F70 allows notching of the last segments, according to what I've read. ..Willy.
 
I've also only used Notch a couple of times to satisfy my curiosity that it works. Most always use Sens. high as stable, Disc 0 or 6, JE and 2F. Dig non-ferrous sounds and also some mixed ferrous/non-ferrous if I can get the non-ferrous tone to repeat any. Especially if they show DEEP on the depth gauge.

Ron
 
I replied because thats what I`m democratically allowed to do as a forum member !:rolleyes: I pointed out i don`t use it ,not i can`t use it !
 
n/t
 
Yes I see why the notch is not used @#$%&%^&*$$(*$@#$&(^%^%$&$
I agree with you Jeb you might notch something out????
I dont 1/2 a F-75 yet but im gana get one,
I Like notch on my Whites Eagle II SL 90 its a snap!!!! I Like this thred, MickFin
 
Besides being too much bother (I got the F-75 because it was simple), the numbers in the notched out group might not represent the targets too accurately. Some targets in that notched-out group might carry over into the next un-notched group. People rely on the numbers too much as whether to dig or not to dig, especially on deeper targets. There are too many variables and different ground minerals and rates of decomposition to say if a target will always register a certain VDI....they can't....detectors are not advanced enough. Iron reading in the 80's and 90's is a perfect example of not relying on the VDI's. I suppose shallow targets will give a more accurate VDI, but for the hunting I do, I don't come across many shallow targets.

Sometimes, you just have to dig it. If you have a hunch that it's a good target, what have you got to lose? Sorry, I'm not much help but Damiano finally got his question answered and I thought I would add my 2 cents to the topic of VDI's.

Ron
 
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