Question about the Tesoro Cibola and the older Silver Sabre units... MONTE are you reading this?

[Jay Evans]

I was reading the user manual for the Cibola on the Tesoro website and it has a section about "Super Tuning" the Cibola.

"Super Tune Your Cibola"
The Cibola can be set up to get even better depth and sensitivity while operating in the DISCRIMINATE Mode. Super tuning is accomplished by working in the DISCRIMINATE Mode and turning the THRESHOLD knob to the highest setting.

Super tuning your Cibola will cause the threshold audio level to be set too high for accurate All Metal or Pinpointing operation.

To start, turn the DISCRIMINATE LEVEL knob to just above the IRON setting and turn the SENSITIVITY knob as high as it will go without causing the detector to chatter. Check a target or two and notice how far away you can get from the coil and still receive a repeatable audio signal. Now, turn up the THRESHOLD knob and recheck the targets. You should see an increase in the distance from the target to the coil. Push the PINPOINT button. Notice that the threshold tone is far too loud to accurately identify some of your targets.

Take some time to try different targets and settings in an air test to see how well your detector will work in the ground.
My question is this... " Could the same thing be accomplished with one of the older Silver Sabre's, That have the same threshold/pinpoint button setup as the newer Cibola?

 

[Jay Evans]

I know the two detectors have different types of discrimination and operate on different frequencies but why does overloading the threshold like this react with more depth as they are implying?

 

[space_weaseal]

I know the two detectors have different types of discrimination and operate on different frequencies but why does overloading the threshold like this react with more depth as they are implying?

I am no epert and i am probably wrong.
I think that it makes the really faint and deep targets easier to hear, ( almost like a audio boost ).

 

[SkiWhiz]

I know the two detectors have different types of discrimination and operate on different frequencies but why does overloading the threshold like this react with more depth as they are implying?

I am no epert and i am probably wrong.
I think that it makes the really faint and deep targets easier to hear, ( almost like a audio boost ).

You are an expert weaseal, well almost, you didn't spell expert correctly . It does make the deep and faint signals easier to hear.

 

[Dan-Pa.]

I do know that on some Tesoro units the all metal and disc zones are sort of tied together in laymans terms and increasing the threshold will give you more depth but blow your ears out if you pinpoint in all metal and if you do have to pinpoint in disc. Problem is don't have a prayer about your unit but do know the toltec 80 and 100 were set up this way. Give Tesoro customer service a call as if they don't know will have a tech assist you..Yep on my old Toltec 100 this procedure did give more depth but again a tech will have to explain why...

 

[Jay Evans]

if it'll work on the older SS uMax, I'm gonna try it with the Tejon and see what kind of results I get.... I might need a helper to dig lol.

 

[tvr]

Tejon does not really benefit by super tuning; different design.

One thing that starts to go away with super tuning, as the threshold is maxed, is the discrimination of large iron. Big iron sounds a little different with a bit of a booming or echo on the edge of the beep, but will hit hard when super tuned and you think iron is discriminated out. It is also hard to size things with no usable pinpoint.

Seems to be a point of advancing the threshold where you can gain some depth and still have reasonable big iron discrimination; then you hit kind of like a knee on a curve. Once past that point, you may find your self digging large pieces of old farm implements at incredible depths that no longer discriminate out. (I did).

Having learned the negative features of super tuning in my first summer with the Cibola; I now nearly always hunt with a usable threshold and use the pinpointing for near exact location and for sizing and depth information. I tend to only super tune if I am on a hunt where I know I am going to dig everything anyway.
Cheers,
tvr

 

[Jay Evans]

Thanks Guys... I just bought a Vaquero (High Tone) this evening... I may be getting rid of the old modded SS umax I've had for so long.... we'll see after I get the Vaquero here and try it out a few times.

 

[Jay Evans]

Just tried Maxing out the threshold (Super tuned) on my old Silver Sabre unit and it helped a little on depth, but not enough (To me) to warrant calling it super tuning. I believe the fact that you lose pinpoint ability because of having the threshold set so high, and not being able to use the pinpoint mode makes this mostly unusable unless you were looking for deep iron targets period. If you were going to be looking for deep relics, I would think a properly ground balanced unit would be enough to get what you're looking for. I have a Vaquero coming soon and I'll try the super tuning on this model. Tesoro has the super tuning section in both manuals for these units..... maybe it's the electronics/coil combination of these particular units being different, that would allow a substantial depth increase by using this procedure. I know for a fact that one of the older silver sabres (That I have) didn't benefit that much from it.
HH,
Jay

 

[montepollock]

Increasing the sensitivity/threshold ,or meter sensitivity over loads the filter circuitry reducing noise and allowing Higher gain to be used.
This may not work in the more mineralized areas. In SE Kansas the soil seems neutral,but I have some problems in burned coal and rust though.
HH,Mont