Techniques for deep, good signals in trashy areas?

As I posted in the "Saga" thread:

"In trashy areas where I don't dig everything, I...need to figure out how to determine modern, surface junk signals [from the] than older, presumably deeper good signals.  Since I'm mainly looking for coins....With the disc set high, I'll get a lot of quiet beeps but, when I switch to all metal the signal gets really loud.  If I thumb down the disc they also seem to be [louder] junk.  When I dig those signals, they've turned out to be junk every time which tends to be discouraging and makes me not feel like digging as much."  (This paragraph was particularly in reference to a site where I'm hoping to find coins (mainly) from about 1800-1840 but the issues seem to be more general as well.)

What techniques do you use to separate good, deep signals from modern (40 years or so) surface trash? 

  _Rich_




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If you use a md with discriminater (and who doesn't) you get much better results with a smaller coil like a 6".  Doesnt pick up multiple targets.

Steve

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i'm not familiar with your detector so I probably shouldn't even reply, but if it has a surface elimination feature, you can set it to the depth you'd like the machine to ignore. Sue

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Sadly, no surface elimination feaure here.  Haven't heard of that.  That could be quite handy!

On this theme, I searched by the river today after the big event for almost 2 hours over lunch and and nearly 3 hours after work.  Was trying to concentrate on things dropped over the weekend but kept getting distracted by deeper objects, even though I kept telling myself I'll hit that stuff later.   Funny thing was, even after two days w/ thousands of people, the only things I found that were recent were a memorial cent and a roosevelt dime just lying on the surface.  But both were picked up via visual ID rather than the MD!

But the crowning achievement of the day and my development so far was, at the end of the night when I was pretty much giving up on recent offerings, when I was searching the bank at high disc and hit a weak but solid signal.  Checked it on all-metal and it was still weak but solid.  Dug way the heck into the bank (12"?), including making the hole big enough to try to fit the coil in to pinpoint better.  (I need to get/make one of those handheld pinpointers.  (If I understand what they do correctly.))  And I found two wheats--one '44 and one undateable.  I was pretty happy with that confirmation of my theory of weak but solid signal plus weak but solid all-metal signal equaling deep solid target.  Icing on the cake was that I thought I'd heard a skip--i.e., double beep--and I found two cents. 

More on the rest of the day later (in the 'Saga' thread).  I'm wiped and off for bed.

  _Rich_

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		Quote:			Posted by BlackX
	What about strong vs. weak signals? I'm thinking in particular of aspects like:  when searching w/ discrimination on and getting a weak but solid signal but, when I set it to all-metal, the signal gets very loud.  That sort of thing.  (I'm using a Tesoro Sidewinder uMax if that makes much difference for some aspects.)   _Rich_ You will always get a stronger signal in all metal mode then with the discrimination. I usually hunt with the smallest coil availible - crank the sensistivity up as high as I can go and hunt sow. Steve

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