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semi auto -vs- manual

C

craigV3

Member
I was hunting a small sports field the other day with my sensitivity set at 22 automatic...this is what the E-Trac had recommended (with the other sensitivity bar to the right)....the area was baren and lacked any signals to make my threshold null....then I got a tiny squeal that made my ears perk up...9" wheat came out of the first hole....I continued to search and again got a tiny squeal that only sounded off in one direction..by mistake I pushed the right arrow and turned the sensitivity into manual....that freaking penny was singing like a 3rd grader at a talent show...I hunted the next hour (until the mosquito's got real bad) in manual and snagged 2 more wheat's and a Rosie......does this really make that much of a difference. All the coins were 9" plus ....I'll remain in manual until further notice! :ranting:
 
I get more depth in manual too. One reason I love my 10x12 sef butterfly coil is because it allows me to hunt with higher manual sensitivity.
 
I seem to run manual most of the time.
If suggested sensitivity isn't above 22 i run manual.

LabradorBob
 
http://www.findmall.com/read.php?71,1218078,1218830#msg-1218830
 
The Etrac has three channels that it uses to identify targets. When you set up in Auto Sensitivity, the Etrac adjusts the sensitivity for each of those three channels separately. When you set up with manual Sensitivity, all three channels are set at the same level. For example, if the Etrac determined that the high channel would be set at 20, the mid channel set to 15, and the low channel set to 10, the Sensitivity number displayed will be 20, even though the average Sens is at 15. So when you manually set the Sensitivity at 20, thinking you are matching the Auto setting, you are actually putting more Sensitivity into the mix than was being done automatically. You'd actually be setting the Sensitivity at 20 for each channel. 20, 20, 20. That higher level of "all around" sensitivity is likely the reason your Etrac has more falsing, is noisier and is less stable than in the Auto Sens mode.

Another thing to keep in mind is that when you offset the Sensitivity (-3 to +3), the Etrac will compensate each of those three channels with the amount you chose. In other words, in the example above, if you added (+3) three to the Auto Sens, it will display 23. But the channels would actually be running at 23, 18 and 13. You can't set the manual mode to match that because in manual mode, all three channels get set with the same value. In this case, if you set manually to 23, your actual sensitivity to each channel would be 23, 23, 23. Much higher than the 23, 18, 13 that you actually have in Auto Sens for this example. JMHO HH Randy
 
I always hunt in manual. I start out all the way up at 30 and only turn it down if I have to. I also use very little discrimination, relics at the most. I want all the depth I can get out of my E-Trac.
 
I guess it must depend on where you hunt and how you hunt.

I've tried manual but it becomes far too noisy for me. I suppose I could check every signal, but I'd be dead and gone before I could get half our city park checked. I run auto with +3 and it is very stable and I use manual 29 for double checking iffy signals.
 
Did my own testing - similar to others, I discovered that I can miss deep targets using auto, even using auto +3.

Those results were enough to convince me to always use Manual.
 
Thanks for your experiance.
I tend to run in Auto UNTILL I get an area hunted pretty well cleaned out, then I go to manual and try to get all the depth I can and check the iffy signals. I have found in the Park that I dont find many good iffy signals and this made me feel pretty safe using Auto for some time. But it is not the same experiance for me in an area I hunt with lots of iron. In that area I am trying everything to see what works good there, now that it has slowed way down for me, so far no conclusion as I am trying to get the two tone audio to find some deep itmes.

good luck
utahshovelhead
 
Southwind said:
I guess it must depend on where you hunt and how you hunt.

I've tried manual but it becomes far too noisy for me. I suppose I could check every signal, but I'd be dead and gone before I could get half our city park checked. I run auto with +3 and it is very stable and I use manual 29 for double checking iffy signals.
Click to expand...

I like hunting in auto sensitivity when I'm at a new site, I'm cherry picking and I don't have much time. However, sooner or later, I switch to manual sensitivity and simply lower the level if my detector gets too noisy. I don't mind a bit of falsing here and there when I know it's going to get me down deep where I want to be. But, shoot, if I want my detector to run as smoothly as it does in auto, I just lower the level of manual a bit more. Presto! It's just as stable but I get better depth.

Let me elaborate on exactly why I like the 10x12 sef coil. My detector is so much more stable with higher levels of manual sensitivity with this coil...much more stable than the Pro coil at the same level. So when my detector falses too much when I have the 10x12 on, I lower the sensitivity until it quiets down. If I had my Pro coil on, I'd have to lower manual sensitivity even more to get it to run as stable. So when you consider that you get more depth with the bigger 10x12 and your detector operates considerably more stable with higher levels of manual sensitivity and you still have outstanding separation...well... let's just say the 10x12 takes your detector to the next level. I'm sure the outcome would be the same with that coil on an Explorer. Deadly combination.
 
question for ya........ Do you guys Re-noise cancel after going from auto to manual? do any of you use the manual settings to noise cancel? thanks, Dan
 
Probably out of habit but I re noise cancel often and whenever I make changes to sens, manual, auto. most likely a little to often but what the heck...cant hurt.
 
I tend to use Auto +3 90% of the time. I'm lucky enough that where I hunt over here in Blighty, it always ranges very high.
I like the fact that it tracks the ground for me and constantly adjusts in the background leaving me to concentrate on picking those small high tones
out.
It is just another thing I don't have to worry about and keep and eye on the suggested level or falsing, constantly adjusting manually.

In my mind, Minelab have done alot of work separating these channels and producing complex algorhythm's to ensure the Etrac is giving the optimum
sensitivity settings for various target types whilst keeping it stable.

My outlook is a bit old school on this. I always think that a machine must be run stable to get the best from it. If you push the sensitivity too high, it can have a detrimental effect of reducing depth and producing false signals interrupting your technique and missing signals in between them.

JMHO........Gaz. :thumbup:
 
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