As it seems Beach1 should be deeper for out of water beach hunting I was trying to get it dialed in yesterday and never really got there. I wonder if you have experienced the same thing. I do a noise cancel (but never really notice any improvement from it) and have ground balace set on tracking. The beach has several bands of black sand (corona del mar). I sweep the coil and constantly get what I would call an aftertone. A tone with every sweep. Sometimes this will be a low tone and later during hunting it might turn to a high tone. This along with the increased sensitivity of Beach 1 vs Beach 2 just really gets my brain saying this is too much work! I can back down on the Sensitivity but then it is pretty much like Beach 2 with higher sensitivity. I find that I can play with the recovery speed setting and minimize the aftertone occurance but not totally eliminate it. So bottom line for me is - is this something you’ve experienced as well or unique to me/my machine.
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EQ800, Beach1, recovery speed setting?
- Thread starter bklein
- Start date
Mr. Carolina
Member
Try setting GB at 0 and turn tracking off. Maybe you are hearing the machine retune itself. Another beautiful setting I use is 0 threshold. Try it if you have not. It's a whole new machine.
Charles (Upstate NY)
Well-known member
Default recovery speed for Beach 1 is 6, which way did you adjust and by how much? Noise cancel won't help with black sand, its for avoiding EMI e.g. radio transmissions, cell phone, turn your phone off or put it in airplane mode if you are carrying it, nearby radio towers, hospitals, plenty of sources of EMI and they can be a mile off. Black sand is just a mineral it doesn't emit EMI.
This will sound strange but I'll explain. Detect at a right angle to the water, start detecting at the waters edge, detect up towards the high tide line, then turn around and detect back down towards the waters edge. Do this vs detecting parallel to the water. Here's why, there are transition zones on a saltwater wet sand beach. From sopping wet to wet, from wet to semi wet, from semi wet to damp. If you detect parallel to the water on one of these transition zones the ground condition changes significantly within a single swing, so the machine is constantly trying to adjust the ground balance from one extreme to the other, every swing this is going on and you will get the kind of after tone you describe, its not a hard target size false. By detecting in a direction up and down between the water and high tide line the ground changes much more slowing and doesn't change within a single swing. If you are in the sopping wet the whole swing is in the sopping wet. You take a step forward, still sopping wet, maybe not quite as much but its a gradual transition from one zone to the other with no real change in a single swing.
Now black sand same principle, if you can see the black sand try to swing in the black sand vs across it. Try to avoid abrupt changes in the ground signal, black sand/clear sand/black sand in a single swing avoid.
Hope this helps.
This will sound strange but I'll explain. Detect at a right angle to the water, start detecting at the waters edge, detect up towards the high tide line, then turn around and detect back down towards the waters edge. Do this vs detecting parallel to the water. Here's why, there are transition zones on a saltwater wet sand beach. From sopping wet to wet, from wet to semi wet, from semi wet to damp. If you detect parallel to the water on one of these transition zones the ground condition changes significantly within a single swing, so the machine is constantly trying to adjust the ground balance from one extreme to the other, every swing this is going on and you will get the kind of after tone you describe, its not a hard target size false. By detecting in a direction up and down between the water and high tide line the ground changes much more slowing and doesn't change within a single swing. If you are in the sopping wet the whole swing is in the sopping wet. You take a step forward, still sopping wet, maybe not quite as much but its a gradual transition from one zone to the other with no real change in a single swing.
Now black sand same principle, if you can see the black sand try to swing in the black sand vs across it. Try to avoid abrupt changes in the ground signal, black sand/clear sand/black sand in a single swing avoid.
Hope this helps.
Charles (Upstate NY)
Well-known member
ALSO...try to keep your coil flat relative to the beach. If your coil is tipping up at an angle at the end of your swing left and/or right again this throws off the ground balance and you can get a tone. Sometimes the beach is more picky about this. Seems the wetter the sand the worse it can be. Higher up the slope towards the high tide line less of an issue. The double whammy of sweeping across a transition zone parallel to the water plus tipping the coil should be avoided. So try to keep the coil flat at the end of your swing. You want to hover just above the wet sand without touching, touch the wet sand yet another false tone issue. Also little bits of seaweed or beach grass sticking up out of the wet sand will also produce a false tone if you touch them with the coil.
The hotter you setup your machine the more the above become issues. I like to run my detector with aggressive settings, but have to take even more care when I do to avoid the above.
The hotter you setup your machine the more the above become issues. I like to run my detector with aggressive settings, but have to take even more care when I do to avoid the above.
Charles,
I understand what you are saying about the black sand being in bands that I'd sweep across - but that's how most people hunt the beach until they hit a patch. Beach 2 doesn't do this, other detectors I have don't either. Well actually the 17" coil on my CTX did but Minelab replaced it and it doesn't do it now - that was probably an accelerometer issue. Recovery speed seems just a sweep noise equalization tweak for my machine. I see no change in tone duration with lower numbers. Show me a video that shows otherwise because I sure wish it did extend tone duration. You are right - if I lift the coil any with a lower recovery setting the target tone then does extend to the ridiculous. In gold mode it will go for 2 seconds!
Carolina,
I originally hunted with zero threshold but that was beach2 which was quiet to begin with. So then I began to wonder if things were set right as I heard little or nothing for extended periods. With threshold I hear the iron dropout and sure I can enable all metal but then I just hear low freq beep beep beep most of the time from all the little rusty nail snippets from the firepits. I do see value in the iron tone though as many of my targets are really false hits that have iron fundamentals. I'd miss a cellphone or two but usually I walk over these and don't dig them anymore. Conditions are so poor I want to hear deep things as so much is sanded in. I'm not hearing/digging them except for an occasional zinc penny that comes in low numbers. Its actually not just beaches that the noise is crazy - park1 at the park as well. My park must be full of can slaw as so many 1's. But pinpoint doesn't sense them so....?
The manual actually warns me of this saying to notch them out. Instead of iron masking targets can slaw will
?
I really need to meetup with a local with an 800 that likes it and compare.
I understand what you are saying about the black sand being in bands that I'd sweep across - but that's how most people hunt the beach until they hit a patch. Beach 2 doesn't do this, other detectors I have don't either. Well actually the 17" coil on my CTX did but Minelab replaced it and it doesn't do it now - that was probably an accelerometer issue. Recovery speed seems just a sweep noise equalization tweak for my machine. I see no change in tone duration with lower numbers. Show me a video that shows otherwise because I sure wish it did extend tone duration. You are right - if I lift the coil any with a lower recovery setting the target tone then does extend to the ridiculous. In gold mode it will go for 2 seconds!
Carolina,
I originally hunted with zero threshold but that was beach2 which was quiet to begin with. So then I began to wonder if things were set right as I heard little or nothing for extended periods. With threshold I hear the iron dropout and sure I can enable all metal but then I just hear low freq beep beep beep most of the time from all the little rusty nail snippets from the firepits. I do see value in the iron tone though as many of my targets are really false hits that have iron fundamentals. I'd miss a cellphone or two but usually I walk over these and don't dig them anymore. Conditions are so poor I want to hear deep things as so much is sanded in. I'm not hearing/digging them except for an occasional zinc penny that comes in low numbers. Its actually not just beaches that the noise is crazy - park1 at the park as well. My park must be full of can slaw as so many 1's. But pinpoint doesn't sense them so....?
The manual actually warns me of this saying to notch them out. Instead of iron masking targets can slaw will
?I really need to meetup with a local with an 800 that likes it and compare.
Charles (Upstate NY)
Well-known member
bklein said:
Lower your recovery speed for more depth. Last night I sampled 72 different targets. Two things I noticed right off the bat was recovery speed 3 was WAY deeper than any of the higher factory preset recovery speeds. INCHES deeper. Second is that TID was horrible with the higher factory preset recovery speeds at 8 inches, TID jumped all over the place each swing and by many points. I lowered the recovery speed to 3 and 26, 26, 26, 26, 26 every swing at 8 inches. I started sampling at greater depths and the 26 would drop to 25, deeper still the 25 would drop to 24 with maybe some 24-25 bouncing.
I'll summarize what I saw in the depth tests...
Mr. Carolina
Member
bklein said:Charles,
I understand what you are saying about the black sand being in bands that I'd sweep across - but that's how most people hunt the beach until they hit a patch. Beach 2 doesn't do this, other detectors I have don't either. Well actually the 17" coil on my CTX did but Minelab replaced it and it doesn't do it now - that was probably an accelerometer issue. Recovery speed seems just a sweep noise equalization tweak for my machine. I see no change in tone duration with lower numbers. Show me a video that shows otherwise because I sure wish it did extend tone duration. You are right - if I lift the coil any with a lower recovery setting the target tone then does extend to the ridiculous. In gold mode it will go for 2 seconds!
Carolina,
I originally hunted with zero threshold but that was beach2 which was quiet to begin with. So then I began to wonder if things were set right as I heard little or nothing for extended periods. With threshold I hear the iron dropout and sure I can enable all metal but then I just hear low freq beep beep beep most of the time from all the little rusty nail snippets from the firepits. I do see value in the iron tone though as many of my targets are really false hits that have iron fundamentals. I'd miss a cellphone or two but usually I walk over these and don't dig them anymore. Conditions are so poor I want to hear deep things as so much is sanded in. I'm not hearing/digging them except for an occasional zinc penny that comes in low numbers. Its actually not just beaches that the noise is crazy - park1 at the park as well. My park must be full of can slaw as so many 1's. But pinpoint doesn't sense them so....?
The manual actually warns me of this saying to notch them out. Instead of iron masking targets can slaw will
I have no more suggestions. Let me know what you figure out please. Just curious. Good luck to you!
I really need to meetup with a local with an 800 that likes it and compare.