False signals

[Anonymous]

I'm having real problems with false signals, not just tiny blips or squeeks but good strong signals. I have tried sweeping at all different speeds, using very low sensitivity and lots of different recommended settings but still get lots of false signals. The signals seem to be on the edge of the point where the machine nulls out for iron or other discriminated junk. I have tried digging the junk and it is allways one metal metal object not a few objects close together.
It's getting realy annoying as I'm having to sweep over and over again to check if there is a null in the middle of the signal.
Also another problem I have which may be related to the first is I am getting the crosshair in the top right corner for larger ( 1-2 inch square ) squashed aluminium drinks cans, lead and iron.
Please help as I'm about to torch my machine !!

 

[Anonymous]

you mean good strong repeatable signals? Falsing to me is more or less just a blip... if its repeating its not a false.. it might be a false ID in the fact that its reading on the screen where a good target does, but mostly you should be able to tell a good target by its crisp solid tone.. hunting in high trash areas can be nerve racking when you havent learned to distinguish good signals from bad.. Not sure how long you been using the explorer but it does come with use.. And its true for any detector.. it goes off on metal and you have to use the detectors discrimination abilities and ID, but most importantly your ears and experience with that detector. those square pieces of aluminum can fool anyone, and any machine.. unfortunately you have to dig them... Make sure you keep the coil flat and as close to the ground as possible.. the more air between the coil and ground the more falsing you get, and also the deeper you will get good targets.. Again I stress normal audio and fast response as being the best setting to tell junk from good in trash.. dont overdo the sensitivity and sweep slow. make very small left and right sweeps directly above the targets your checking, if the tone remains steady from all different angles of approach its generally a good target.. good targets also pinpoint small, unless they are very shallow, even then pinpoint smaler that most trash.. there are certain trash items that are going to mimic good no matter what you do, but those same targets will fool any machine.. if you leave them you will also leave good stuff..so dont give up.. the exploer in my opinion is the best at finding good among the bad.. just takes a bit of learning

 

[Anonymous]

Then I realized it was coming when I was at the end of swings or if the coil hit the ground ever so lightly. After further investigation I found that there was an issue where my upper shaft entered the control housing. Try to jiggle the detector there to see if it happens. My unit was sent off to Las Vegas last week after it got unbearable. Good Luck and HH. Let me know how you make out.

 

[Anonymous]

was that the "female" pins end of the coil socket, that is the coil socket end that connects in at the upper shaft end, will eventually develope a "loose" binding effect to some of the indvidual male pins that they connect to, by way of being inserted into them when you put the coil socket together. Look carfully at the female end (I hope this is an acceptable description) of the black mylar socket and see how it is made up.I can't think of another way to desribe it. ( I wonder why that is?). Ther should be 5 silver "HOLES" and one some or all have been over expanded.
It may be one pair in may be more, but that is all you need, one to make this incomplete contact and cause a very frustrating situation similar to what has been described.
I used a fairly large sewing needle to close the individual "female" sockets for the pins by placing this thick needle in between the plastic and the female end of the sockets pins so as to contract and reduce the size of the female pins "opening". NOT TO MUCH NOW, SO BE CAREFUL!!
T
he problem as described, in my case which seems similar, is no longer existent since I reduced the size of the female socket pins opening, so as they would engage the male pins.....snuggly.(all this talk is sort of getting me a little excited)only because I know that by doing this it might help..........of coarse. <IMG SRC="/forums/images/biggrin.gif" BORDER=0 ALT="">
Hope I have helped.
HARDNOSE <IMG SRC="/forums/images/ausflag.jpg" BORDER=0 ALT="au~">

 

[Anonymous]

same problem..fixed it in about the same way that u described......and yes they are female....lol

 

[Anonymous]

One thing I have discovered as a newbie is when you get what sounds like a good target in two directions is simply move the coil off to the side and set it on the ground. Wait a couple of seconds and recheck the target. If the crosshairs stay in the good area on the display then you should dig. If they move to a new location somewhere in the bad areas then I don't waste my time with it. I have found that the good ones will stay in the good area no matter how many times I stop and start. Remember I'm still new at the explorer and one of the pro's may have something to say about it but this has been working for me.

 

[Anonymous]

Yes they are repeatable false signals and the falsing occurs before the edge of the coil gets above the discriminated out target. It's almost as though there are areas around the null which respond as a good hit.
Another oddity I have noticed is if I use a clear screen ie. no discrimination and then pass the coil over a piece of iron the cross hair will as expected appear in the top left of the screen. If I then use iron mask set at 0 or mid-way the same piece of iron will give a good signal but on the edge of the iron mask at the top left of the clear portion of the screen. So why does the cross hair appear in a different place when I would have expected the iron to be discriminated out ? Only until I put the iron mask on full the iron is completely discriminated out.
I was thinking perhaps I would be better using no discrimination at all and listining to the sounds and then confirming the potential target by where the cross hair is. After trying this I noticed that targets that would have been on the far right of the screen are now appearing slightly further to the left. Its seems as though the discrimination is pushing the crosshair to the right of the screen until it reaches a point where the unwanted target it is completely discriminated out. Although this ammount of discrimination appears to get rid of most of the unwanted signals and some of the falsing it is now overlapping onto the good targets.
Could it be that because the Explorer uses so many different frequencies that this may cause the cross hair to appear in several different places?

 

[Anonymous]

The edge of the iron is where the halo from where its rusted is, which fools detectors into thinking its a good target.. by accepting more iron you just get a better ID faster so you dont mess around with the falsing as much.. I think you should run in iron with iron mask down - 14 at least.. run in ferrous audio and you wont get those high toned false off iron much at all..