Threshold? What good is it?

[Rebel1]

I just got a nice Silver Sabre Umax. It has an on/off/sensitivity knob, a disc knob, a threshold knob and a pinpoint button. What good is the threshold if it doesn't even have a mode switch to go from all metal to disc? It is always in disc and the only time you hear the threshold is when you push the pinpoint button. If i have the ground balance mod done and the pinpoint button is replaced by the GB knob, and an all metal./disc toggle switch is added, will it operate with the threshold hum if in all metal? Why don't they make them so you can hunt in disc with the threshold?

 

[SkiWhiz]

Pushing down the red pinpoint button will put the Silver Sabre

 

[Rebel1]

Thanks for the reply. On this Silver Sabre Umax, the threshold sounds more like chatter than a hum though. Could be where i was trying it in my yard. Lots of metal around, aluminum siding on mobile home plus metal shed metal fence and underground elec. cable and such? I need to get it out somewere with less interference and give it a whirl. I didn't know about the using it to test ground balance though. thanks for that info.

 

[SkiWhiz]

One thing to note is that on some Tesoro's the threshold "buzz" isn't perfectly steady/smooth sounding, hard to explain, kind of like a bee buzzing, the buzz sounds like it is pulsating so to speak.

 

[Furious T]

If the threshold isn't a steady buzz, then you most likely have interference coming from somewhere...could be radio/telephone interference, could be rubbish or deeply buried stuff in the ground or it could be the ground itself, i.e. the mineralisation in your particular area. Without manual ground balancing, there's nothing you can do about whatever it is, except be aware of it when you get other signals and when you are setting your sensitivity and discrimination levels.

 

[Rebel1]

Thanks Furious. I guess it is a bit positive on the ground balance for my dirt. When i put the coil near the ground, even in the silent search mode i get that chattering sound. Of course i guess that could also be all the metal around and the underground cable and elec. wires. I really need to get to the park when the rain quits again.

 

[tvr]

With the pinpoint button held down, that threshold will let you size and shape the target. You can essentially use the threshold change as you move the coil over the target to draw it's outline or to separate multiple targets that are very close together. It is just another piece of information that is sometimes useful.

 

[slingshot]

On some models, the Threshold can be set really hign in a/m mode and when switched to discrimination mode, it goes silent. Then the unit is "supertuned" and can gain about 1-2" in depth. Downside? The pinpoint mode can't be used effectively, so the target will have to be pinpointed in disc. motion mode..