Simple test

[smokey63]

Sorry for another long post. Yesterday I dug a small plug, placed the same quarter at 6 inches, same pulltab at 3 inches in wet soil. Tested the Vaquero with the 8x9 stock coil and the 10" Elliptical, no response from either coil when swinging the short width of the tab. Changed my swing pattern to run the length of the tab and response was one click from both coils from right to left (totally opposite from the previous test on top of the ground which was left to right) Supertuned again made no difference.

Yesterday, I forgot to mention that once you get that faint signal or click try the "Tesoro wiggle" as I have seen it referred to, which is basiclly holding the coil over the target and moving the coil quickly left to right no more than 2 inches if there is a good target there it will begin to respond with a better tone. I am sure most have heard of this, but for the ones that have not it is another trick in your arsenal. I'm courious if any other detectors will do this?

Now for the kicker, while standing there looking at the plug scratching my head again, I knew there had to be a way to pick that quarter up below that tab. The answer I found is to angle the coil at about a 45 degree angle and that quarter stuck out like a sore thumb. You can angle down to about 30 degrees, but there is where it starts to disappear again. So, I guess I will now disc out tabs to the point that there is just a slight signal and angle the coil to see if anything is under it while coin hunting.

Last, but not least the Whites Classic SL picked up the quarter once again in either swing direction with no problem at all. Has got to be the difference in frequency? Maybe somebody can chime in on the frequency question.

Very interesting results, actually my first thought was the coil angle deal and try to get under the tab. I rigged up a shoe box before the stick and tried the angled coil and didn't have any luck with either of my detectors.
With the angled coil how high could you run the disc up and still read the coin?

Ron in WV

I did not increase the disc, but I will after I do the dime test with both coils later today.

 

[smokey63]

Sorry for another long post. Yesterday I dug a small plug, placed the same quarter at 6 inches, same pulltab at 3 inches in wet soil. Tested the Vaquero with the 8x9 stock coil and the 10" Elliptical, no response from either coil when swinging the short width of the tab. Changed my swing pattern to run the length of the tab and response was one click from both coils from right to left (totally opposite from the previous test on top of the ground which was left to right) Supertuned again made no difference.

Yesterday, I forgot to mention that once you get that faint signal or click try the "Tesoro wiggle" as I have seen it referred to, which is basiclly holding the coil over the target and moving the coil quickly left to right no more than 2 inches if there is a good target there it will begin to respond with a better tone. I am sure most have heard of this, but for the ones that have not it is another trick in your arsenal. I'm courious if any other detectors will do this?

Now for the kicker, while standing there looking at the plug scratching my head again, I knew there had to be a way to pick that quarter up below that tab. The answer I found is to angle the coil at about a 45 degree angle and that quarter stuck out like a sore thumb. You can angle down to about 30 degrees, but there is where it starts to disappear again. So, I guess I will now disc out tabs to the point that there is just a slight signal and angle the coil to see if anything is under it while coin hunting.

Last, but not least the Whites Classic SL picked up the quarter once again in either swing direction with no problem at all. Has got to be the difference in frequency? Maybe somebody can chime in on the frequency question.

Very interesting results, actually my first thought was the coil angle deal and try to get under the tab. I rigged up a shoe box before the stick and tried the angled coil and didn't have any luck with either of my detectors.
With the angled coil how high could you run the disc up and still read the coin?

Ron in WV

Maxed the disc out with both coils and the quarter was loud and clear. No difference between minimum and maximum disc. About 8-9" with 8x9 and 6-7" with the 5x10 in the ground.

 

[WV62]

WOW, now I will need do the same here and retest all these detectors. You may have really hit on something here, really appreciate you taking this testing to the next level. As soon as this bad weather moves out, it's back to testing.

Thanks a lot,

Ron in WV

 

[smokey63]

WOW, now I will need do the same here and retest all these detectors. You may have really hit on something here, really appreciate you taking this testing to the next level. As soon as this bad weather moves out, it's back to testing.

Thanks a lot,

Ron in WV

Well, it has definately changed the way I will coin hunt from now on. Gonna slow down and double check

 

[WV62]

Well I made a small test garden, I buried a pre 82 penny at 6" and a pulltab at 3" just above the penny. I tested all my detectors and coils but the pulltab was all I got. I even tried sweeping all the coils at a steep angle to the ground and couldn't get anything.

I also buried 2 other coins a pre 82 penny and a nickel at 7" several feet apart and couldn't get my F75LTd with all its coils, the 11"DD, the 5"DD and the 3 1/4 x 6 elliptical to hit on either. The Tejon hit both coins with both its coils the 9x8 and the 5.75 concentric, just a note, I tried both high and low disc and it didn't make any difference the coins were detected with the Tejon.

I am thinking that the F75LTD will detect both coins after the test garden gets a little age on it, like a year or so. Can't explain why the Tejon detected those newly buried coins, but I like it.

Ron in WV

 

[Nauti]

Could be the fact that the tejon coils are concentric and those of the f75 were dd.Concentric coils tend to be slightly deeper at the peak of their detecton field.Also the tejon is a powerful detecting tool when set up properly with depth to match virtually anything else on the market.

 

[smokey63]

Maybe it needs to be sent in and checked out?

 

[Critterhunter]

I did some similar tests on my GT and with various coils. A detector can not see what a detection field can't see separately. First (shallowest) metal object in the field, even way off to the side of a deeper coin directly under it, and if any part of the field touches the masking item first then it's game over. For that reason a sharp DD line is of primary importance to me. Further details on that in these videos...

With tabs...

http://youtu.be/hkGUuBvYLQI

Along with the popular elevated nail masking test people like to use to judge a machine or coil, and various other nail masking tests...

http://youtu.be/NilnTD47FoY

And again these nail tests with numerous coils, and also the mineralized brick test that also seems rather popular among you tube people testing detectors or coils...

http://youtu.be/bKesj7KjcXY

 

[TheMarshall]

quote=WV62]
Here is a simple little (maybe dumb) test that gave me surprising results, I really thought that in this advanced High Tech world of Metal Detectors that the outcome would have been a little better than what I got. I