Reverse Signal

[Gerry in Idaho]

Gus mentioned in his post below showing the 40+ grammer that it was a Reverse Signal.

I know what a "Reverse Signal" is, but maybe some of the newer folks do not. Can you (Gus) explain a little more in detail?

Some folks say it is a larger nugget that makes it? I don't always think so, but I don't find many larger nuggets either.

Does anyone else know or have an opinion of the "Reverse Signal".

 

[Gus in idaho]

Gerry,
Thanks for your reply, And I will do my best to try an explain what a reverse signal is.
I only swing two gold machines, a gold-bug2 and a GP-3000. But I know that all GP series detectors will make a reverse signal.
A VLF machine, or my bug2 at least will not make this sound.
I have only swung mono coils on my Minlab. Other coils may not produce the same results.

If you could visualize the threshold in your mind as a constant line of sound moving across the page in your mind horizonaly from left to right.
As you swing the coil across the soil this line of threshold is moving so slightly up and down with the different mineralizations in the ground.
By up and down I mean higher and lower pitch sounds.
Picture anything above the line as a higher pitch and anything below this line is a lower pitch sound.
A target on this line of threshold (such as nugget) will create an arch or a rainbow shape in the line. The sound goes up to a high pitch, and back down as you pass over the target.
A Reverse signal does just the opposite. Most of the time its just a big patch of highly mineralized ground. Which I have dug many holes for nothing on.
If I am digging a hole and think It might be mineralization. I always ground balance my machine directly on the soil that I have already pulled out of the hole. This will often times silence the mineralization and prevent you from digging more.
Another good way to determine if its just ground noise or an actual target is once you have removed a fair amount of soil swing the coil back over the hole at the same elevation you were at when you began digging. If the signal persists, there a good chance its a target.
Most of the time you will only hear ground noise, or mineralization when the coil is in direct contact with the soil. I say most of the time because I have had this proven wrong before.

Sorry, I got off task. Anyways A reverse signal will sometimes be distorted a little in sound. When I say distorted I mean not real smooth like the rainbow sound often is. Kind of broken up a Little.
That was the case on a bunch of these nuggets I recently found in a patch.
I use to think that only big nuggets would give a reverse signal, however in a recent patch of nuggets I found 9 to 17 gram nuggets where giving reverse signals. My conclusion was that maybe these nuggets contain more Iron or some other mineral that was making them give off the reverse signal.
I had a resent post on this forum asking If anyone was running there new GPX-4000 in inverted mode. I honestly feel that the reverse signals are not as strong and the rainbow signals. I think that If a person was in a patch of nuggets that were giving off reverse signals, this new feature on the 4000 would be a substantial benefit.

Gus-

 

[~LARGO~]

Hi all,

I think Gus covered the subject pretty well.

A couple things I might add from my limited experience.

In the event you get a reverse signal, and find a nice nugget, that sound will be imprinted on your brain forever.

I did find a nugget at depth, about 18-20 inches, 3/4 ounces.

When I first got a big reverse target signal, the signal area was pretty large. About 4 feet long and almost 3 feet in width.
I was in an area that had some old rusty cans on the surface, and I quicky assumed there was an old can buried out of sight. I suspect others has assumed that, and never dug to find out, which ultimatley saved the nugget for me to find.

Unsure of where to dig because the signal was spread over such a large area, I determined where the outside of the signal was, made a mark on the ground, the did the same on the opposite side. Turning 90 degrees, I did the same, then determined where the center by connecting the outer marks, to make an X, and that is where I dug.

As I dug deeper, the reverse signal then became just a standard BIG can type signal, and the more I dug, the more confidant what I was digging for was NOT a can. I was digging in undisturbed vertical shale by that time. Shale is the dried remnant of ancient lake bottom mud, and can be a pain to dig in, if you don't know how.

Thanks again, Gus for the great job of 'splaining how to recognize a reverse signal!

Have a good day!

~LARGO~

 

[fredm]

Gus, that is the best written discription of an audio signal I can remember reading!!!
Fred

 

[AU MARC]

A reverse signal hmmmm......I`ve been walkin for hrs. sweatin and thinkin all the AU been found around here:angry:Then all of a sudden I get this huge hitBang! My gp lights up so loud it scares meI circle it and say yeah another BEAN can about 2 1/2 feet down and say I`m not diggin that piece of junk and walk on..
Next week my buddy calls me all excitedTellin me he just dug a 41 grammer right where we were hunting last week and it sounded just like a piece of can or somethinbut he said I`m gonna dig it anyway
When you walk across one of these sounds THINK IN REVERSE AND DIG ITYOU MAY SURPRISE YOURSELF

Cheers

Marc

 

[AU MARC]

Gus Good Buddy
All joking aside that description made me visualize a reverse signalThank you.
When I`m on my knees shakin in exhaustion from diggin 3 ft. I hope it`s a bonzer of a nugget

Marc

 

[wesman]

Hello guys, One thing I have noticed when in sensitive mode, on my 3000, the detector seems to confuse/reverse the signal on some on the bigger pieces. Whereas the Normal setting seems to minimize the complex signal effect.

 

[Gerry in Idaho]

Most of you folks who are more experienced Nugget Hunters have found an occasional "Reverse Signal Nugget" and usually they are quite large of a 1/2 or bigger. One of my few RS Nuggets is this smaller one. I think the reason it is a RS is that it is so SOLID and DENSE.

Guess the wt of this nugget and it may surprise many of you.
The Indian Head Cent was found on another trip, but I liked using it for a size comparison. An IH cent is the same size as todays modern 1 Cent coins.

 

[Gerry in Idaho]

Thanks for sharing.

 

[Gerry in Idaho]

Some of you are probably wondering what the size of that nugget really is??

Here is a photo on my Digital Scale.

It is a whopping 6.1 grams.

Me personally, I have never found a Reverse Signal Nugget that was that small.
[attachment 59399 reverse2.JPG]

 

[Alan]

Went out bush just after my last post. In town briefly for supplies but home in about a week.
Good to see the site buzzing.
I've always refered to these beeps as 'Wrong way beeps'and thought they were just part of the sd/gp make up.They were the ones to get excited about.
It just goes to show you have to investigate any variation in the threshold. More so with the 4000.
Alan

 

[Gus in idaho]

Thanks Fred,
I wasn't sure if people would be able to understand what I was trying to describe.

Marc,
You better go back to that spot and dig it up on your next visit!!!

Largo,
Thats a damn nice nugget. I bet there is alot more nuggets like that sitting in the middle of a pile of cans out there in Rye-patch.

Gus-