F70 dirt indicator observation (ground mineral indicator)

[tony (Orlando FL)]

I found something that seems to be following a pattern over the last few days I thought I would share and to ask if anyone else has noticed this as yet.

I have been hitting all my older worked out sites and this means in most cases that the item will be on the deep side. In most cases the depth indicator displays 12-14 inches in items like quarters and dimes. Keep in mind I am not vouching for the depth indicator accuracy but am vouching for deep common coins thanks to our soft sandy type soil.

What I have been noticing is that the target ID can lock on to a target at that depth and the confidence indicator can be 75 or 100% confident that the item is as indicated BUT a scenario to watch for is IF the DIRT indicator lights up any amount of bars on this target it is most likely junk. I am not saying DO NOT BOTHER digging it, just be aware of what the F70 is telling us.

If the target sounds good, clean and small like a coin, and the meter says so too with high confidence, be sure to look at the DIRT indicator and make a mental note of what it was after recovering it.

In my time with the F70, the items were coin size but very thick, like perhaps 5 quarters stacked together. Another thing that has been recovered is flattened out cans on edge way deep. Another item was a craftsman wrench, again oriented vertically.

Maybe up north, the bad ground indicator would light up without a target under the coil, however I have not seen that happen here, yet anyways. It has alway lit up when over a target, at any depth.

So far so good with the F70.

Tony

 

[jmaryt]

interesting observation!..tony!..thanks!..the 70 is definately getting down there though!..
the sites you are hitting,are they "loaded" with trash?..does the 70 recover very fast from target to target in your view?

(h.h!)
j.t.

 

[tony (Orlando FL)]

JT, Yes, the areas around here where many of us detect are loaded with trash. The trash is at all depths too. We find zincs at 8+ inches to give you an idea how deep the stuff is here. Because I dont have a lot of time on the F70 yet, my 'guess' is it is getting down seemingly deeper probably because it is faster to respond to the many targets which helps sort em out easier. The targets may have been heard in the past but ID'd as solid iron perhaps.

The F70 has been a pleasure to use so far and effective as well.

Tony

 

[BuckeyeBrad]

The 75 does a similar thing. When you're getting coinish ID's at extreme depths that bounce down to a much lower ID, (and it's CRITICAL that you only rely on this when you're smack dab over the middle of the item) pay close attention to which of the two the confidence meter is higher. That's USUALLY the key as to the real identity of the target. NIce work, Tony.

 

[tony (Orlando FL)]

I need to clear something up after re-reading what I said which was

"Maybe up north, the bad ground indicator would light up without a target under the coil, however I have not seen that happen here, yet anyways. It has alway lit up when over a target, at any depth".

The DIRT indicator does not light up for each and every target, only BAD ones that lock on as coins.

Sorry for the confusion !

Tony

 

[jmaryt]

thanks tony!..i am at a crossroads as to whether or not to purchase the 75,or the 70!.....it appears that the 75 MAY be overkill if ALL you hunt are coins in a trashy environment,however if you are in an area that will allow it, the "stat" mode,and the je mode on the 75 will let you know why you paid more for it!..or so i have been told!

(h.h!)
j.t.