Fisher "F" Series Forum

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F70 and jumping ID numbers
Posted by: fjs440
Date: August 19, 2017 08:00AM
I am eighty and tend to go to beaches because there I do not have to get down on my knees. Getting up and down is very hard for me, but I also like to use my F70 on solid ground.

Before I get down on my knees, I look for solid repeatable signals and the target ID numbers do not jump more than two or three each way. Large number jumps always seem to be junk.

How far do you let your numbers jump before you will not bother digging? Again, getting up and down is a real problem for me.

Thank you. I love this forum.

Fisher F70 w/Fisher 11” DD and NEL Snake Coil
Fisher 1280-X w/8” Coil
Fisher F2 w/4”, 8” and NEL Hunter Coil
Makro Pointer
Killer B Stinger Headphones

Re: F70 and jumping ID numbers
Posted by: hsimmons75
Date: August 19, 2017 09:20AM
I use the F70's twin, the Patriot. I had a penny yesterday jumping from 50-70. I wouldn't have dug it a few months ago, but after reading some tips on these forums, I started digging more. When I started, I used to rely solely on the numbers and the confidence meter, now I try to trust my ears a little more. I do dig a little more trash now, but I don't want to miss any coins. The deeper the target the more the numbers will jump. If you don't prefer to dig a lot of trash, the 2-3 number range should be good. I'd even go as far as five or six. Sometimes with multiple coins or trash in the whole with a good target, it can be a little erratic. I've only had my patriot for a few months, but I've been hitting it hard since I got it and learning a lot.

Edited 1 time(s). Last edit at 08/19/2017 09:20AM by hsimmons75.

Re: F70 and jumping ID numbers
Posted by: fjs440
Date: August 19, 2017 10:41AM
You are right about more depth making the numbers jump around. I guess I should just stay with solid hits.

Re: F70 and jumping ID numbers
Posted by: WV62
Date: August 19, 2017 08:25PM
I run the F75 and I don't pay any attention to the amount of spread. What I look for is good number to show, so if I see several good 72's or some 80's flash up there then my chances of it being a good coin target go way up.

So I would suggest just watch for good numbers and forget the spread.

Also your meter will not go as deep as your audio.

You take care and keep hunting,

Ron in WV

Worked and lived in the Huntington West Virginia area all my life, retired 2010
US Air Force Vietnam Veteran (68-69 & 70-71)
Started getting into metal detecting around 1975

Re: F70 and jumping ID numbers
Posted by: dfmike
Date: August 20, 2017 07:07PM
I agree with Ron. Stable numbers are always nice but more often than not especially in trashy areas, other targets might partially mask the good one. You might see the hint of a high conductor number now and then and get more lower range numbers that jump. Oftentimes this can mean a good target "lost" in trash (nails, foil, slaw, whatever).

Active detectors: Fisher F5 , Fisher F19 LTD, Nokta Fors CoRe, Makro pointer and way too many coils.
Previous detectors: Bounty Hunter Discovery, Fisher F44, Omega 8000 V6, Minelab X-Terra 705

I think people that go purely by a number leave far too many good items...
Posted by: vlad
Date: September 07, 2017 05:04AM have to take more chances with signals that are erratic There are many factors that change change the i.d., in sweeps, or have them average different than the norm.
Example: quarters at average depth here on an F-75 for me read 84; got an 89 one day but dug it, another quarter, Why the difference-many variables; but as Ron stated, it was solid (dig.)
But the solidness of numbers can be a little relative (more spread) depending on mode; go to stat mode and the depth is almost not to be believed-but the numbers (can) jump a lot.
But holding it still above the target, or really shortening the sweeps once you isolate the target works wonders.
It comes down to knowing the unit and what to look for. (I think there is some 'Shadow' in that F-75 stat mode!) :lol:
(don't forget that when depth reaches a certain point, i.d. numbers tend to rise, such as nickles reading as tabs--
--until you reach the point that things start to i.d. as iron)

Edited 1 time(s). Last edit at 09/07/2017 05:09AM by vlad.

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