Disc on 6 works very well in iron....

[Bill Ladd]

This also sort of mirrors the setting that T2 users like in the 20/21 disc region (instead of 40). The theory of hearing some iron helps to seperate in thick trash, as turning the F75 disc up toward 15 begins to promote masking & less seperation....
Went out in front of girlfriends old house last night & in 10 min. pulled 2 wheat pennies out of the trash just messing around in an area 5 foot square....
Give it a try at your next iron loaded site with disc @ 6 & watch the "good" repeatable targets leap right out of the "chatter". Yes, it will be a "noisy" setting, but works. I agree with NASA-Tom that I like to run this with 1 tone only....but others may like hearing the tones better as I had 2F going as well.....
DE mode is probably better for thick iron & trashy hunting, as JE is just so hot...
HH,
Bill

 

[Mark in NC]

I'll try that out (if i ever get off work again!)

 

[Streak!]

if you have the 75 set for Delta Pitch tones instead of a single tone in heavy iron trash (like a cellar hole), you'll hear the little peaks(IE: Good targets) much better than you will with a single tone.(And you WONT have to watch the display) The DFX was good at this too, but wouldnt have been nearly as good if it had been a single tone machine. the higher conductivity targets just "pop" in multi tone, VS single tone. The key, as you mentioned, is to accept a lot more in disc, so the machines not trying to choke anything out. you'll hear all the iron, but everything else too, with little masking. I was very pleased the first time I used my 75 in a well hunted VERY iron ridden site. Cant wait till a smaller coil comes out.............

 

[FrankMD]

affect where you set the discrimination? Refering to setting it at 6. So if the ground minerals were high would the 6 setting still be right?

Frank

 

[Bill Ladd]

I don't that that should affect it really. Might just add some additional chatter, but "noise" is expected with disc down there. Some hot rocks may sound off with disc on 6, but usually I encounter hot rocks in fields rather than an iron rich house site. That disc is really basically what I call my "iron setting"....I wouldn't use that disc everywhere.
HH,
Bill

 

[Mark in NC]

It works Great! Like you said, it's not for all sites, but it's great for unmasking ridiculously close targets...especially to iron.

Another thing to take note of... (which I'm sure others have already seen).. when sweeping the coil, and (using dp mode) you hear multiple tones, very close together, take a look at the depth bar on the screen. I've noticed with the incredible reset speed of the 75, although the audio is coming at you super fast, if you can see "rapidly" changing depth indicators, and that super sweet high coin tone, you've got a coin either on top of a piece of iron or very, very close. Every audio "hit" throws a different different depth reading at you too. (unless of course they are on the same level)... I found this last night in my test bed using disc. 6 with a deep quarter that has some rusty tin below and adjacent to it. Pretty cool stuff!