Vaquero in all metal mode ?

[hatpin]

Ive been putting in a lot of time with my new vaquero. I have a question that is not in the owners manual. In all metal mode the machine makes two different sounds. They are different pitches. What is it trying to tell me? Are the higher pitches usually junk?

 

[Calif_quake]

I wonder the same thing.

 

[POLEWAGGER]

It doesn't actually make two sounds in AM. It makes a "sweep" tone. The tone or pitch will rise as the coil nears a target, depending on how fast you are sweeping, and how close the coil is, as well as how large or dense the target is. Listen to the difference between a smashed VS not smashed aluminum can, or a smashed can VS a large iron washer. Larger, denser objects will rise to a higher, louder tone and sometimes the tone will disappear over the target (null out). In clean, mild soil, you should be able to adjust thresh & GB so that when you sweep, the tone stays relatively steady and low. Bumps or rises in tone indicate a metal or mineral target. Noting how fast and high the tone rises and falls when you sweep will tell you a lot before you dig. AM- Closer to target= higher, louder tone.

 

[hatpin]

Thanks for that info. It will help a lot.

 

[Calif_quake]

This helps a lot yes.

 

[hftrsrskr]

So I'm fuzzy here. Do I want it to null out over the object? Is that the indication of the spot?How is that different from the lil red pinpoint button which screeches and then goes silent? Help!

 

[hatpin]

The all metal mode and the red button are the same. I tried tuning to the target while in all metal mode like the booklet says but have not had much success.

 

[POLEWAGGER]

The all metal mode and the red button are the same. I tried tuning to the target while in all metal mode like the booklet says but have not had much success.

Keep in mind, a penny at 0-1" will scream and null out, so will an aluminum can at 12" in AM.
It's hard to understand where you're having a problem other than underestimating the sensitivity of the beast.
I would HIGHLY recommend setting up a test plot "coin garden" and bury copper & zinc pennies at different depths to hear what they sound like in AM and disc.
Experiment with different sweep speeds on cans and big dense stuff like brass padlocks or railroad spikes to get the feel for the auto tune in AM.
To REALLY get extreme, go play with a manhole cover in AM!
Keep us posted on your developments.

 

[REVIER]

Like most detectors there is a language that they speak and Tesoro is no different.
Once you have enough experience you will notice there are lots of subtle differences in that tone.

Large objects will scream at you, shallow ones too.
Deeper objects will sound further away...there is a difference in the sound of a can at 2 inches and one at 8.

Coin size objects will be the same, they sound different at different depths.

Then there is that actual tone...the sound of a coin can be distinguished from some of the trash like foil if you dig enough of both and learn.
Coins will usually have a "fully rounded tone"...a little longer, and the end is not "clipped" like some trash tones will do if you hunt in disc.

Kind of hard to explain this stuff and put it into words, but with experience you will learn.

You know how lots of people can hear the sound and the difference of a silver coin that is dropped on a hard surface vs a clad coin?
It is unmistakable, and the tones that come out of your fine detector has a lot of these distinct different sounds too...but when first starting out they will usually all sound the same.

Also that disc knob is a tool that I use to get more information.
I hunted in very bad soil for a long time and that has changed so I am changing too.
I will be doing a lot more hunting with the threshold tone than ever before.
I did learn that no matter how you acquire that target, use the disc knob to see where it fades out to give you a good idea what you might be swinging your coil over.
Turning that knob up past the area where it fades out and then turning it back down to see where it come in will be more accurate, by the way.
If you do this, listen to how the signal comes in.
Coins and other good targets will usually just come in, silent...silent...silent...solid tone, trash targets might not and will be slightly broken before you turn that knob enough to get a good solid signal.
All of this is subjective and in the real world weird stuff can and does happen, but the more experience you have and the more you know the clearer this language becomes.
Tons of fun to learn this language too, in my opinion.

 

[hatpin]

Ive noticed that broken signal at the end . Ive been ignoring cans by raising the coil off the ground. If it makes that broken sound before it discriminates out and I can hold the coil over a foot above it and get a strong signal with the discriminator near zero , its a rusty can.

 

[hatpin]

Two days ago I was sweeping down a trail and the unit did a real fast beepdeep beepdeep... I thought to myself," Im not digging that rusty can" and continued onwards. After a few minutes I thought " This thing is unusually quiet." checked it out and the battery was dead.