Menu
What's new
Find's Treasure Forums

Welcome to Find's Treasure Forums, Guests!

You are viewing this forums as a guest which limits you to read only status.

Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.

Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.

Click here to register!

Need Support Help?

Cannot log in?, click here to have new password emailed to you

Changed email? Forgot to update your account with new email address? Need assistance with something else?, click here to go to Find's Support Form and fill out the form.

THRESHOLD

A

Anonymous

Guest
Still trying to figure the threshold out. Seems it is very hard to keep a stable threshold in trash. Also on certain patches of ground why does it get louder. Is it supposed to cut out just before you get a beep ?? In heavy trash would a lower gain work better ?? Got out in my yard today for a while found 3 pennies and dug a little more trash, but not as much as normal, I only dug what id'ed as coins <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol">
Ray
 
Ray, As you know, the center part of the DD coil is the part that finds the goodies. What I have noticed on some coils is that the outside "ring" does not pick up that target and in fact nulls out when you pass a coin across it. That may be what you are experiencing as you swing across a target. Try this. Take the coil outside away from any interference. Tune it as you normally would and set the threshold at an audible level. Point the coil away from any ground. Standing it straight up in the air works well. SLOWLY pass a quarter across the coil, keeping the coin flat as you pass it over the coil. Does the sound disappear as you go over the "ring" portion of the coil? Does it really sound off when it gets to the center of the coil? It should. Here is another interesting test. Take the same coin and put it on it's edge. Pass it across the coil again with the coin going across the coil with the edge leading the way. Do you get a signal at the mid-point? You should. Now try it with the coin on edge but pass it across with with the face or reverse side leading the way. In other words, the coin is parallel to the center spoke of the coil. Some coils will actually null out at the center spoke with the coin on edge. I have seen some that seemed to airtest flat very well, but you could actually touch the center of the coil when it was on edge and parallel to the center spoke. I don't know what this proves or what it even means, but it is an interesting test. Kind of makes airtesting seem not as important. That and you hope to HE$$ that the coins you are looking for are laying flat. <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol">
 
Guys! All of these air tests are like deer tracks to a hunter "you cant eat them". They are a waste of time, the only real test is in the field under field conditions, I read these air tests all of the time but never see the same person posting his finds, Maybe too much time spent air testing not enough time detecting?
Richard C.
 
Richard, I have made the comment several times on the various forums that airtests are over rated. However, I do believe that when you are comparing one coil against another with the same machine, the information is relevent. That is the information Ray had inquired about and the information I was telling him. To indicate that someone who is willing to take the time to perform certain tests to help out fellow detectorists is "wasting his time" or spending "too much time airtesting and not enough time detecting" is rude to say the least. If you were referring to me, I have been detecting for 30 years and thought maybe I could help some of those who did not have my experience. Until my spinal injury 4 years ago, I was out in the field nearly every day that weather would permit. I have logged thousands of hours of field detecting and thousands more researching the areas that would produce good coins. Not tht you probably give a #####, but since my spinal injury I have not been able to get out in the field as much as I would like. Kind of tough to detect when somedays you can't walk. My brother does take me out when he gets the opportunity, and I still manage to pull a few coins out of Mother Earth. I didn't get the "hat trick" in 2003, but did find a Morgan silver dollar, silver half, seated quarter, seated dimes, Barber dimes, Shield nickels, V-nickels and Indian cents. If you think I talk the talk and don't walk the walk, I invite you to look at the Minelab corporate web site under the hot finds section. They have two of my 2003 finds listed there. A silver dollar posted under the Advantage section and a seated dime story under the Sovereign Elite section.
 
This is how my hunting buddies and myself realy test our detectors and coils is in accual hunting conditons, not air test or test gardens. These can give you a idea of how it works, but in the feild where you detect is the final test that counts.
I detect with several differnt detectors and coils and compare signals with many of my hunting partners while we are coin hunting. Seen a few surpises in accual hunting compared to the air test.
Seen some great air test and test garden test over the years, but in the feild in accual hunting conditions they were nothing to brag about.
Good post Richard and thanks for posting it as it needed to be said.
Rick
 
First and formost I would make no comment to anyone personally to affend. I know Ray personally and would not single him or anyone else out for criticisem. How ever I still stand by my original comment that air tests are over rated and over done here on these forums. I have been in this game since 1963 and have seen unusual and unexpected finds using a number of different detectors over the years. The true test isnt under optimum conditions over a bench but in the field where there is little if any controll of the ground and target positons. Add to this all of the other varieables of moisture, time in the ground and countless other factors and the air test is just what I said it is "Deer Tracks".
An aside to the above, I had no way of knowing of your physical challanges and since my wife is physically challanged rest assured that I will be the last to disperage you or anyone else fighting life from that position.
Best to all
Richard C.
 
As Spring comes on a little stronger and the cabin fever subsides winter weather challenged , you will see a lot less of the air test posts and more finds being posted
 
If you read my original post, I say that I think airtests are not that important. I have said several times in the past that they are over rated and that field use is where the real test of a machines or it's accessories is measured. But I think there are times that running a coil through air is beneficial. I use to throw a quarter on the ground to calibrate my Sovereign each time I went hunting. I use a nickel laying on the ground to make sure I don't set my discrimination level too high that I miss gold or nickels. I also use airtests to compare one coil to another on the SAME machine. The point of my posting was to provide information that someone who may be doing airtests might want to read. If you don't believe in airtests, then don't airtest. But don't assume that those of us who have found a use for these tests are less than proficient at metal detecting. I know that the winter months in IA are too darn cold to detect in the field. So when I get done researching all the sites I want to hunt the coming year, I keep the cobwebs off the machine by running it in the house. Airtests.
 
For their purpose of setting your detector and seeing where certain items disc out at and even setting the notch on the Sovereign if you use notch.
We are probably saying the same thing, only a differnt way. Air test are good, but not to be cut in stone as accual hunting is where it counts.
Waiting to see what that 12.5 coil will do for you when you can get out and compare it to the stock coil.
Might have to try to get to Iowa this summer as I have a brother and sister down there and a few of the guys I E mail back and forth and would be nice to stop in and chat and see how my detectors work there,if I make it down there. Brother is in Des Moines and a sister in Palo.
Rick
 
You must log in or register to reply here.
Top