Discrimination question and depth

[wheatymike]

I know that turning up the discrimination knob reduces detectable depth on my Vaquero. Does this also occur on other type of machines that electronically turn on/off different segments of the conductivity range electronically? Example. My brothers Garrett Ace 250 will notch out any segment in the range. It will not beep on that notched out segment however it is still reading it and showing is blinking on the LCD display. This is not actually discriminating out the blanked out segment but effectively are by silencing the signal. This is the best of both world disc. with no depth loss.Seem that Tesoro could build a machine like this.

 

[Matt_SC]

My Cortes shows discrimanated out signals on the lcd screen but dosen't beep on them.

 

[SkiWhiz]

I hope that Tesoro never makes a detector like the Ace 250, at least not one with the nasty tones the Ace has or the slow recovery speed of the Ace.

 

[BarberBill]

Good question - hopefully someone will do some testing and post the results.
BB

 

[Dirtdigger33]

I have to agree with Skiwiz on this one. i don't want to see the Tesoro name branded to something that looks like a space gun on a stick and sounds like the circus has arrived in town. Give me the pleasing sound of my Tesoro in a hunt. Maybe some day if I can dig an Advil out of the ground on each hunt to take care of the headache all that squawking, screaming machine can deliver it might just might be an option. nah, i will just stick to my smooth sounding Tesoros.

 

[wheatymike]

I am not referencing the sound of the tone of the machine. I am referring to the ability of the machine to turn on and off segments of the detectable range. This form of discrimination would be nice to have. I only compared it to the Ace 250 for comparison purposes. Many other machines have this ability. Maybe doing this would make the machine have a digital signal as apposed to a analogue tone and not be as good? I don't know, I am not an electrical engineer. Maybe you guys who have more understanding of this will enlighten me,

 

[BarberBill]

n/t

 

[BarberBill]

I've had some experience with several machines with that capability. Sorry to say, I didn't notice, nor did I look for any loss of depth with some targets notched out. I still have one in my arsenal that has notch disc. However, I'm currently involved in a move with most of my stuff packed up. In a few weeks when I get more settled I'll try some air tests to see if I can learn anything regarding this question. I know that some, if not most, detectors lose depth when the disc is turned way up, but I don't know if the notch type disc varies or changes at all, depending on which range or how many ranges are notched out.
BB

 

[wheatymike]

Bill, thanks for your input. I would love to see the results. Michael

 

[WV62]

It is a little hard to post on the Tesoro forum about other brand detectors without naming names. But in my experience with the machines I have had over the years my older machines (70's 80's) would lose depth with higher disc settings, but the newer ones tend to lose depth with lower sensitivity settings and not with the high disc settings. Now I have never seen a notch machine lose any depth with a notch setting.

I have the Tejon and it seems to hold the depth pretty good, but I haven't really tested it to see, most of the time I use this machine for gold jewelry hunting, so I run the disc kind of low.

Ron in WV

 

[Monte]

Metal detectors of today, and of the more recent decade, tend to differ a great deal from detectors we used to use. In the earlier era of the '60s, '70s, '80s and even most of the '90s, most of the metal detectors on the market relied upon an old tried-and-true analog circuitry design. It was very common for you to lose a little depth when the Discrimination control (usually a variable Disc. design) was increased close to a target rejection point. For example, if set at minimum you could get 'X' inches of depth on a US 10

 

[wheatymike]

Monte, Thanks for the input. Michael