Ace 250 Depth Question

[amiebj]

I have an Ace 250 and sometimes set it for "ALL METAL" but discrimiinate for just silver. Does this effect my depth? Also, I found a 1978 Canadian Dime and looks to be siver. Is it silver?

 

[Mick in Dubbo]

In short, no. It's not a true all metal mode. It seems that the Ace discs out some iron targets still. ie needles from syringes. As soon as any discrimination occurs, you lose depth. Still, the Ace with the standard coil on, is still good for 6 to 8 inches, which in the real world, plenty of depth. You won't find too many coins past that depth.
Mick Evans.

 

[MNCoinhunter]

'78 canadian dime is not silver. And I've never found a coin deeper than 8"....except for a quarter I found in beach sand one time at 12."

And once you begin notching out tones, you are no longer in All Metal mode. It becomes Custom mode...unofficially.

 

[nikandr23]

that is ridiculous.

any one can get Real Silver, Plastic bucket with sand, plastic ruler and make Scientific Test. to be 100% sure.

 

[widebody]

[size=large]depth question has already been answered so on to the dime.
i also found a 78' canadian dime just three days ago. it just doesn't look like silver really and it's magnetic. that is i took a magnet to it and it stuck.
i read somewhere recently on this forum that canada quit making siver coins in the mid to late 70's. haven't confirmed that yet.
it was down about 3" and came out nice and clean but just not shiny.

HH[/size]

 

[NM5K]

Notching does not effect depth on the ace 250, or 150, 350.
It's not like some older machines where they used filters, and
can suffer from some depth loss when discriminating.
With the Ace 250, it's actually in "all metal" all the time.
The notching is purely audio, and thus has no effect on depth.
IE: if you run wide open, or only leave the silver tab open,
the depth on silver will still be the same. The machine itself
never changes. Only which notches give a tone alert.
You can look down at the visual display and see it's still hitting
on any type of metal no matter what it's set to.
Also, some think of different things when they mention "all metal".
I think calling a motion ID machine all metal is fairly accurate if it's
wide open. But to many people , "all metal" means a non motion mode
which always has an audible tone on targets, and also hits on all metals.
With those, the tone is variable and always changing as you sweep.
It's intensity varies also, where as the ace 250 ID mode is constant
intensity no matter how deep the target is.
With the ace 250, the pinpoint mode is an all metal mode of that type.
I often use it for that by keeping the button pressed down.

 

[amiebj]

Thank you for all the responses, very helpfull. I learn quite a bit off this forum.