Can you use settings to reduce falsing?

[TrpnBils]

How can you use settings to reduce iron falsing? I am hunting two VERY iron-heavy sites right now which were old home sites. One has absolutely no modern trash in it and the other is loaded but the iron is still the issue. Falsing is so bad even with the 6" coil I find myself ignoring high tones and I know that's a bad thing.

Normally I hunt these areas fast on, pitch hold, ferrous coin in combined mode, and I change the sensitivity up every once in awhile but tonight I was in A+3. I changed up my audio bins so that 38-40 are a different tone to try to weed out falses, but I'm still getting falses higher than that...which is why I'm subconsciously ignoring high tones now. I find that in ferrous coin I'm getting almost constant visual falsing at 12-39 and a lot of audio falsing around 12-39 and 12-40. Sensitivity numbers are coming in around 18 at this site I was at tonight, and I noise canceled half a dozen times both in air and on the ground but it didn't help. The only SLIGHT improvement I found was switching to 50 conductive and I even started switching through noise cancel channels manually once I was on a bad false. It would work great for that particular false and the immediate area, but once I got a few feet away it would start back up again.

Any other thoughts on reducing falses from iron? I'm hesitant to crank down the sensitivity because we have pulled coins as old as 1770s down about 8" or so in the past and I don't want to miss those by being too shallow.

 

[sprchng]

Try seawater

 

[TrpnBils]

I've tried that in the past but didn't see any difference. Didnt try it on this site though. What's the thinking there?

 

[IDXMonster]

Jeff,I think the seawater reduces the effect of minerals and MAYBE tiny iron flake,but I don't have proof of that. Wherever your VOLUME GAIN is,turn it down a couple points at a time till the falsing lets up to tolerable.

 

[IDXMonster]

Also,since you have a mess going on in the ground with heavy amounts of decomposing iron,you could try Ground Coin,along with GAIN throttled back. Make sure the VOLUME LIMIT is at 30.

 

[Bryan V]

Try ground coin or high trash and slow your sweep speed way down.
Add a few bars of discrimination across the top over to about CO 32. Then block out CO lines 49 and 50.
Running your combined FE line near the bottom around fe32 will help you find coins close to iron but also let nail falsing come through more too.
Might have to bring your line up in to the mid to high 20s.
If all that fails you will have to drop your sensitivity.
Bryan

 

[TrpnBils]

Jeff,I think the seawater reduces the effect of minerals and MAYBE tiny iron flake,but I don't have proof of that. Wherever your VOLUME GAIN is,turn it down a couple points at a time till the falsing lets up to tolerable.

Ah - hadn't thought about the gain. I don't know off the top of my head what mine is set at but I know it's high...probably 26 or higher. Good idea. I won't be able to get out again til Monday but I will give that a shot. By the way, this is a different site than the other one you and I had been talking about lately. I decided to give the pit digging a break tonight since it was raining and they have a habit of filling up with water at this other place. This site here popped out two half dollars, some seated dimes, and at least two CT coppers last spring for my hunting buddy. I got a (literally) toasted Roosevelt dime that had been in a fire....I got screwed at this site...lol. Got nothing to night but nails though. I know there's more there though!

 

[nenadgbeepin]

Run manual sensitivity and drop it right down. Work really slow.

 

[TrpnBils]

I was under the impression that reducing sensitivity wouldn't reduce falsing (other than possibly not falsing on a deeper layer of nails). Is that not the case? Like I said, we have pulled colonial era coins out of this site at 8" or so in the past so I'm trying to keep as much in depth as I can.

 

[bklein]

What if you copy your mode to a new one and run auto reject on the falsing a few times (remember to save and exit auto reject)?

 

[TrpnBils]

What if you copy your mode to a new one and run auto reject on the falsing a few times (remember to save and exit auto reject)?

Interesting idea. I'll haven't used auto reject before so I'll need to look that up first!

 

[IDXMonster]

What if you copy your mode to a new one and run auto reject on the falsing a few times (remember to save and exit auto reject)?

I have not used auto reject either,didn't know it existed! Shame on me...

 

[TrpnBils]

What if you copy your mode to a new one and run auto reject on the falsing a few times (remember to save and exit auto reject)?

I have not used auto reject either,didn't know it existed! Shame on me...

I believe the Etrac had it too but I never bothered with it there either. The only issue I see with this in my case at least is that it would be rejecting out 12-38/39/40 and the surrounding (11 ferrous, 13 ferrous, etc) which could potentially also be rejecting actual targets. I guess though it's better to (hopefully) null out as much falsing as possible at the risk of losing a target here or there than to pass up a bunch of them because I'm ignoring those tones in my head anyway.....

 

[bklein]

I made a pattern where I first went over (auto reject) all the junk - iron, aluminum nuggets, bottle caps, hairpins, etc. and then got out of that mode and checked my good saved targets and went to auto accept to allow any silent ones.
I also just made the whole screen dark with a reject all, and then went to auto accept to allow my good targets. I think this last approach was best. Just bump the grid up to 2x2 or bigger for some margin, and validate in different soils as I think things skew some.
I then can alternate between one of these screens and open screen if I get bored. But I dig those open screen targets and they're either 12" deep aluminum nuggets or nails/pennies...

 

[utahshovelhead]

Please define exactly what you mean by falsing.

are you getting hit on a target that you dont want to dig or are you reading black sand or something else.?

 

[TrpnBils]

Please define exactly what you mean by falsing.

are you getting hit on a target that you dont want to dig or are you reading black sand or something else.?

I am getting hits that are not repeatable and seem to hover around 12-39 or so.

 

[denny]

Looks like your gonna need a detector with a faster recovery speed to see through all that iron or lower sensitivity in that patch of iron. Maybe that patch of iron is just unhuntable for any detector. I would just hunt that area where you were getting the 8 inch deep coins .

 

[TrpnBils]

Honestly I've pulled WAY more old coins out of the really bad iron area than the place we got the 8" deep ones. That site with the deeper coins is way worse in modern trash too, which complicates things. At the really bad iron site you can be about 99% sure if you get a conductive hit it's going to be something of interest.

 

[denny]

Honestly I've pulled WAY more old coins out of the really bad iron area than the place we got the 8" deep ones. That site with the deeper coins is way worse in modern trash too, which complicates things. At the really bad iron site you can be about 99% sure if you get a conductive hit it's going to be something of interest.

I hunted a iron infested site where we couldn't get coins past a couple of inches deep it was real bad. A friend a of mine asked a construction worker if he could do a small scrape 5 X 12 about 8 inches deep. Pulled out 2 seated coins from that scrape. You will have to work your butt off if your going to do the same if you are shoveling but it could be well worth it at a site like yours.