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Uploaded Pattern Rationale Described

A

Andy Sabisch

Active member
Based on several requests for this explanation as to what the basis for the Pattern I have been using for coin hunting with pretty good success, I put the following image and legend together.

If you want to download the Pattern to try on your E-Trac, here is the post you can find it:

http://www.findmall.com/read.php?63,891768

The following legend refers to the image at the end of the post.

=======================

[A] This area rejects CO values from 00 to 03 (top to bottom). This rejects foil and is low enough so as to not loose gold rings. Chains are hard enough to hit with an FBS detector so this pattern plays the odds and rejects this region based on the amount of trash it rejects while still hitting small gold rings

(B) This is the iron reject and rejects everything from the FE = 28 line to the bottom. Any less and iron bleeds thru
 
Andy, I do not hardly have a clue what you are talking about since I do not own an E-Trac yet. But I want to ASAP. When I do I will look into your book and your posts and it will make sense then! My X-Terra 70 is a great machine but has a course TID and I want a more fine surgical trash separation that the E-Trac offers. Some goodies will always fall into rejected trash zones on the E-Trac but you have to sacrifice a little good stuff with the trash in order to gain alot more good stuff in the overall big picture in the long run. Otherwise the trash will really get the best of you driving you crazy with little progress unless you have nerves of steel. I do not have that much patients for too much trash, so I am willing to sacrifice some goodies for some sanity!! I do know I want an E-Trac and its Patterns!!
 
Good post Andy, very informative & much appreciated.---I'm going to be makeing a couple of changes to an existing program I have in accordance with it.------Thanks again, Del
 
Made a couple of small changes and it works just fine for me.

Though I have my own, I'd be interested in getting the mode.glb you use for this pattern.

David E Di
 
Here is the Mode setting file I use with the aforementioned Pattern file

Again, see what I changed, see if it works for you and use only the changes that you get a benefit from. . . . remember, you need to download it to your computer and open it in the Xchange application.

If anyone wants an explanation of why I made these changes, let me know.

These files are for coin hunting . . . I have others for beach, relic and ocean sites so realize that you may want a few to choose from.

Andy
 
and on some early colonial English coinage. It all works perfect in that they are included and sound off.
Never considered using pitch hold as an option. I like the LONG usually, but pitch hold sounds good.
Hope to see what it performs like in the field very soon.
Thanks

David E Di
 
The thing about Pitch Hold is that if the edge of the coil gets a "whiff" of a good target, you hear it in the threshold changing to reflect a good target . . . this gets me to go back and find out what caused the pitch to change. Also works well in trash when you hear the threshold pitch come back off a null at a different level alerting you to find out where the keeper is.
 
Andy Sabisch said:
Based on several requests for this explanation as to what the basis for the Pattern I have been using for coin hunting with pretty good success, I put the following image and legend together.

If you want to download the Pattern to try on your E-Trac, here is the post you can find it:

http://www.findmall.com/read.php?63,891768

The following legend refers to the image at the end of the post.

=======================

[A] This area rejects CO values from 00 to 03 (top to bottom). This rejects foil and is low enough so as to not loose gold rings. Chains are hard enough to hit with an FBS detector so this pattern plays the odds and rejects this region based on the amount of trash it rejects while still hitting small gold rings

(B) This is the iron reject and rejects everything from the FE = 28 line to the bottom. Any less and iron bleeds thru
Click to expand...
 
and as Dave says, look it over, and tweak it based on your area, the targets you come across and what you are willing to dig trash-wise. A slight adjustment may work far better for you but make sure you know WHY you are making changes rather than just taking what someone else uses with uncertain results.

Dave had some great input as for what changes he would make . . . . . .

Andy
 
and use a smaller coil. Both the stock coil and smaller coils work but the Pattern is the same. Do you get noise from trash other than the items rejected? Yes, but then your brain needs to take over . . . . . dig some and see where the keepers are - tnen base the decision to dig on the CO value and depth. If you are hitting a ton of one type of target, modify the pattern on the fly at the specific location you are in and reject that small area. You might loose something if you do that but my thought is rejecting 95% of some type of trash target that is driving me nuts at the expense of missing one or two items is a gamble I am willing to take with limited time on my hand.

Hope this answers your question

Andy
 
You can save that file and open in in the Xchage application.

Biggest changes are:

Sensitivity >> +2 or +3 depending on how low the AUTO sensitivity level drops and what the depth of targets is expected to be

Volume Gain >> 25

Recovery - Deep >> ON

Recovery - Fast >> OFF (unless the trash gets real bad)

Hope this helps

Andy
 
I tried it just an hour ago. The file to download, when you go to one of the older posts, gave me an error message of corrupted. Then I downloaded one of those above and it worked fine. I had never played with pitch hold. I think I like it. Also, I was getting way more deeper targets to dig and it wasn't as hard to calculate which ones to dig. Some I didn't dig because they were deep and there were people around who might not understand why I was digging up their football field with my backhoe. Seems to make no difference even if I do tell them it'll look the same when I leave. Seriously, I do the flap thing with a ground cloth to catch the diggings and put it all back in and fold the flap nicely and then level it with my foot. However, I knew I would have to go beyond the depth of the Predator. I was using the SunRay 8" Don't know if I'll put the 11 stock back on. Thanks for sharing....Jim
 
Andy , Looking at your Mode Settings you have Variability set at 28. Is that to help determine hot rocks from silver ? Do you find that by lowering the tone ID Limits to 27 also helps with hot rocks?
Also your Audio Threshold is set at 30 . Doesn't the drown out the weaker targets? Thanks for your time
Dennis 2
 
Andy can you put your other patterns on for us to download on xchange? These files [beach, relic and ocean sites]. Thanks so much for all your doing.
 
n/t
 
The pitch hold, caried from the sovereign is handy at times for deep stuff that doesn't sound off so good as would be desired, quite often on the Soveriegn all you get is a change in the threshold to set the alert bells off:thumbup:
 
awesome ANDY, hey that sounds cool huh AWESOME ANDY,hey thanks for the input from the guy who wrote the book cant ask for any more than that.again thanks for all the help ANDY please keep it coming those of us still learning the ropes on the etrac very much appreciate all of it.
 
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