Gents, for some familiarization I put a quarter, dime, nickel, and penny out in the yard, buried bout 6+ inches and buried on-edge/straight up and down. I wanted to hear and familiarize myself with the tones that each made. However, they just weren't there. I had such confidence in my 705 that I didn't even think twice about how deep I put them. I was a little disappointed, but tempered with a dose of realism that a metal detector is not magic. I live north of Houston and the ground balanced at ~40+. I can't really say I've ever experienced this, because how would I know? What's your take? Should I have seen the targets?
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Can't see coins on edge
- Thread starter Johnp3
- Start date
One, freshly buried targets won't respond well. Two, the surface area is vastly reduced, due to being on edge. Slanted, or almost flat would be a lot better. Changing position in the ground (rodents and moisture ) and masking are probably two of the biggest reasons coins, that are at detectable depths, are still being found in heavily hunted parks.
Nuke em said:
I run all-tones and wide open with the HF Elliptical DD. Canewrap is right in that they are freshly buried, but it rained like heck yesterday so I will check today to see if that made any difference... aging the soil like a fine wine
Perhaps also with such mild soil, a concentric coil might be a little better/deeper? I'm considering a second coil and was close to pulling the trigger on a Digger, but maybe it's not the best second choice for me - I'll report back later after I test again, and thanks for your opinions and help.metalpopper
New member
Hi John....First question (me being a UK detectorist.......which, if any, are 'CLAD' coins?.....
Secondly, What is your REJECT pattern?
Thirdly, Search-head frequency.....size,,,,,and 'type'?.....i.e.....DD....or Concentric
Finally, Sensitivity....etc.
Matt.
Secondly, What is your REJECT pattern?
Thirdly, Search-head frequency.....size,,,,,and 'type'?.....i.e.....DD....or Concentric
Finally, Sensitivity....etc.
Matt.
Hi Matt,metalpopper said:
As noted above I am wide open with multi tones (no notches or rejected segments), HF elliptical DD, Sens was about 23 or 24. The quarter and the dime are clad, the penny is likely a zinc (new), and a nickel (which I don't think is clad). I know where the coins are buried, so I scan slow back and forth in a narrow arc to try to find them. I updated my OP with a little more information.
Another thing to consider, is that the 5x10" coil is not a deep seeker. It's a compromise that is depth limited by it's width, and separation limited by it's length.
A Digger coil might well find them, being a hot coil for a 6", and the targets being high conductors (except for the nickel), but with ground phase numbers like you posted most any larger coil would be likely to find 'em.
A Digger coil might well find them, being a hot coil for a 6", and the targets being high conductors (except for the nickel), but with ground phase numbers like you posted most any larger coil would be likely to find 'em.
Mark in S.E. IA
New member
john, you need to let your test garden sit for 2 to 3 years before you can get any true readings from it.
I've found a few old coins that I know for a fact that they were on edge and they were 6" or deeper.
I've found a few old coins that I know for a fact that they were on edge and they were 6" or deeper.
metalpopper
New member
Johnp3 said:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Hi there again John.....did a few simple IN-AIR tests, for you.......see results in attached chart.
[attachment 292898 705tests.jpg]
The figures confirm the out come of your testing, AT SIX INCHES PLUS...ON EDGE..........I think they demonstrate the limitations of
detectability.....more so if buried in any soil.
As the other posting also state, the 10 x 5 elliptical, is by my reckoning, only equivalent to a 5.5 inch circular concentric.
Coins on edge also require a preferential sweep direction to get the better response......tonal ID will also suffer....Best regards MattRuk.
Thanks very much for the hard work, Matt! I appreciate it.
Soooo... I went out in the yard today after the rains from the past few days and - there they were, but just barely. I got a sniff of the quarter, the dime, and the penny, but not the nickel. They were not signals that would indicate anything other than trash, very jumpy, but there is nothing else around them and the signals were where I buried the coins, so it was surely them. I guess I learned something about freshly buried targets, and the process continues... I'll check them regularly to if the signals improve, it will be interesting.
Soooo... I went out in the yard today after the rains from the past few days and - there they were, but just barely. I got a sniff of the quarter, the dime, and the penny, but not the nickel. They were not signals that would indicate anything other than trash, very jumpy, but there is nothing else around them and the signals were where I buried the coins, so it was surely them. I guess I learned something about freshly buried targets, and the process continues... I'll check them regularly to if the signals improve, it will be interesting.
Sounds like you have your answer. Just to share on that coil, I measured a 8" copper Lincoln with a good repeatable signal using the 5x10 18.7 khz coil. Multi tones, wide open (on disc program 1 with all notched back in), Sens 25. Ground phase was 21 and the site is maintained so fertilizer has been applied to this 30yr plus penny in soil that is never really dry. My Lincolns like this one usually come out of the ground oxidized so heavily they're illegible. Ruined. Prime example of the "Halo effect".
I too have tried fresh buried clad and was disappointed. It really takes a long time to bleed enough metallic molecules off into the soil. A few yrs at least!
HH all. Doggy de digger
I too have tried fresh buried clad and was disappointed. It really takes a long time to bleed enough metallic molecules off into the soil. A few yrs at least!
HH all. Doggy de digger
Johnp3 said:Nuke em said:
I run all-tones and wide open with the HF Elliptical DD. Canewrap is right in that they are freshly buried, but it rained like heck yesterday so I will check today to see if that made any difference... aging the soil like a fine wine
Have you got Auto Track on? if so the targets might be tuning out?
Digdoggy, thanks for the info on the coil. It is the only one that I have, but I've been running it for a few years and really like it. I don't think I can wait a few years for a good test... I will have dug it all up by then to buy a Coke or something! Seriously though, I have also pulled some coins out of the ground that were surprisingly deep with a very good, unmistakable signal.
Kevmar - I do not have Auto Track activated, but I will be sure to double check it when I get home.
Last night when I got a "sniff" as I called it, it was in comparison to a couple days earlier when there was absolutely nothing. Great comments about freshly buried coins in a test garden. It also makes me wonder how many targets I might have passed over with a similarly very spotty signal that I assumed was trash. The signal was juuuuust a bit more focused when I wagged the coil back and forth, with only an inch or two of arc, with perhaps a little less extreme TID swing and the numbers a little higher in the range, but still not enough where I would have dug it in the field. Looking back as something else I learned last night, if a similarly spotty target comes up it might be worth "studying" with very short swings from all angles - but I have to recognize the opportunity in the first place.
Kevmar - I do not have Auto Track activated, but I will be sure to double check it when I get home.
Last night when I got a "sniff" as I called it, it was in comparison to a couple days earlier when there was absolutely nothing. Great comments about freshly buried coins in a test garden. It also makes me wonder how many targets I might have passed over with a similarly very spotty signal that I assumed was trash. The signal was juuuuust a bit more focused when I wagged the coil back and forth, with only an inch or two of arc, with perhaps a little less extreme TID swing and the numbers a little higher in the range, but still not enough where I would have dug it in the field. Looking back as something else I learned last night, if a similarly spotty target comes up it might be worth "studying" with very short swings from all angles - but I have to recognize the opportunity in the first place.
No wonder you are not getting much depth , the little elliptical is not very deep . Better get a 7.5khts DD coil , either a 10.5 DD that comes with the machine here in the UK or a dare I say it {you can dare say it, but it won't fly for long on this forum } same freq or a coiltech coil but I cant comment on them as I never had one.
But I assure you that when you get one you will see the light.
Use Gray Ghost or similar headphones that have high tones and set the volume at max on the machine with headphones plugged in .
But I assure you that when you get one you will see the light.
Use Gray Ghost or similar headphones that have high tones and set the volume at max on the machine with headphones plugged in .