Difference in discrimination circuits

[liondogs]

I was looking at the Tesoro catalog on-line and I noticed that some units use a ED120 discrimination circuit in the detector and some have a ED180 discrimination circuit. I was wondering if anyone knows what the difference between the two methods of discrimination are?.

 

[SpiritRelic]

180 is a wider acceptance.The 180 is like full range.Were the 120 has a more limited range.

 

[Bleaver]

SpiritRelic is correct.
And here is a little more on it, I think I have this right. The lower end of the ED120 only goes down into Iron a little. Whereas the ED180 extends the ability to accept down into the Iron range more. That would mean the ED180 discrimination would be better for relic hunting. If I'm off on this someone will correct me.

 

[tabman]

Yep, a ED 120 will just crackle and pop on a ole rusty nail and will not completely discriminate it out at its minimum discrimination setting. A ED 180 will sound off on all metal targets at its minimum discrimination setting. The ED 180 is good for relic hunters looking for nails to locate long gone old home sites. I guess hunting in the all metal mode would accomplish the same thing though. I also hear it's good for detecting in really bad minimized sand and gravel. I wouldn't know, because I detect in really mild ground. I prefer a ED 120, like the Outlaw has, because the discrimination range is more spread out on the dial. Making it more precise.

tabman