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Tesoro Compadre High Gain Circuitry
- Thread starter berryman
- Start date
Sven
Well-known member
What is (HOT) High Output Technology?
Most metal detectors work by sending out a signal, receiving it back, amplifying the return signal, and deciding whether or not to beep. One way of making the detector more sensitive is to increase the amplification of the return signal. This works well up to a point but can cause a machine to overload the circuits and become chirpy. Another way is to increase the initial signal going out, but once again, too much power and the signal will become unstable.
High Output Technology combines the increased transmitted signal and the high gain amplification of the return signal to get the best depth and sensitivity out of our lightweight, compact detectors. When a detector becomes chirpy, the most common reason is the noise to signal ratio. Signal refers to the information being passed through the circuitry and noise is any type of other interference. As the signal is amplified, the noise gets amplified as well. At Tesoro, we use high tolerance components and design them into the circuit to create a lower noise to signal ratio.
I might be wrong but think they now call it HOT. And changed the frequency of the newest detectors Cib, Vaq. to make it look like something new.
Might be totally wrong here but Tesoro might also be increasing the gain to amplify weak signals but in doing so also increases all signals to the point of overload, so they compress the over amplified signals
Most metal detectors work by sending out a signal, receiving it back, amplifying the return signal, and deciding whether or not to beep. One way of making the detector more sensitive is to increase the amplification of the return signal. This works well up to a point but can cause a machine to overload the circuits and become chirpy. Another way is to increase the initial signal going out, but once again, too much power and the signal will become unstable.
High Output Technology combines the increased transmitted signal and the high gain amplification of the return signal to get the best depth and sensitivity out of our lightweight, compact detectors. When a detector becomes chirpy, the most common reason is the noise to signal ratio. Signal refers to the information being passed through the circuitry and noise is any type of other interference. As the signal is amplified, the noise gets amplified as well. At Tesoro, we use high tolerance components and design them into the circuit to create a lower noise to signal ratio.
I might be wrong but think they now call it HOT. And changed the frequency of the newest detectors Cib, Vaq. to make it look like something new.
Might be totally wrong here but Tesoro might also be increasing the gain to amplify weak signals but in doing so also increases all signals to the point of overload, so they compress the over amplified signals
Is the HOT the same thing as Super Tuning?
Super tuning is accomplished by working in the DISCRIMINATE Mode and turning the THRESHOLD knob to the highest setting. -Tesoro
You have to have a Threshold adjustment to do it. The F5 can do the same thing. And has to work with the "gain" control.
Super tuning is accomplished by working in the DISCRIMINATE Mode and turning the THRESHOLD knob to the highest setting. -Tesoro
You have to have a Threshold adjustment to do it. The F5 can do the same thing. And has to work with the "gain" control.
REVIER
Well-known member
A few snippets gathered from the web.
At least one of these guys is an engineer.
"Gain usually refers to the pre-amp section and amplifies the signal from the coil, before it is run through the discriminator section of the detector."
"Gain should be controlling the amount of amplification of the receive signal. The more you amplify the signal the more you are also amplifying the noise and spurious signals being received until you can't tell the difference.
Most engineers design RF receive circuits so the operator can decide how much they want to over drive the receive circuit (running hot). After that it's up to you to hear what's good and what's not.
Remember that you are working inside an envelope, too low and the signal will never be turned into audio for you, to high and everything will be turned into audio including the bad stuff."
People have been screaming for depth, depth, depth for awhile now.
One way to achieve that on modern detectors is to increase the gain and amplify everything more so than the detectors from an earlier time.
That should get you deeper, but also amplify other things that could color or cover up some good info in that amplified signal.
Then there are sometimes filters added in the circuits that might have been installed to smooth out this wall of noise and make more sense of things...I assume.
Thus...high gain, Low noise.
Some detectors let you control gain manually, many don't...I assume that would be the bulk of the silent search type without a manual threshold.
Not sure if this is all true, but it is a theory I have using the small amount of info I have absorbed on this subject.
True or not, I think it works like this...
The Compadre is retro, a throwback to an earlier time before all this gain was added and all the modern circuitry was tweaked so we could get deep and still make sense of the sounds.
The circuitry is stone age compared to what we have now, probably less filters and other enhancements than the current state of the art designs.
I am not saying it is better or worse than modern circuitry designs, just different.
Maybe because of all that we get to hear a little more purer signal, with the least amount of "walls" between us and the conductive properties and true sounds of our targets.
Then there is the little higher frequency which might not matter all that much, but most believe the higher frequency units are better for gold searching.
Add it all up, whether it all works this way or not, in my experience you get an old detector that still has a place in this modern world and can still do remarkable things just maybe because it is so stone age.
The Tesoro people have actually admitted that regarding the Amigo and this one they made them too good...nobody ever planned or probably wanted an entry level unit to work this well.
To their credit they have continued to make them and sell them all these years, and when the came out with a unit and that larger coil and didn't charge one extra cent more for it than the smaller coil model, well, as an old retail guy I was astounded.
The modern cars are great.
You can get great gas mileage efficiency, super comfort, safety in all manufacturing from the brakes to the roof, motor power galore if you want it and much more than cars of an earlier age.
As much as all of this is cool and satisfying and makes me feel safe to spend time in and to drive these modern cars, what I wouldn't give for a few more spins around the block in my old 70' Charger.
At least one of these guys is an engineer.
"Gain usually refers to the pre-amp section and amplifies the signal from the coil, before it is run through the discriminator section of the detector."
"Gain should be controlling the amount of amplification of the receive signal. The more you amplify the signal the more you are also amplifying the noise and spurious signals being received until you can't tell the difference.
Most engineers design RF receive circuits so the operator can decide how much they want to over drive the receive circuit (running hot). After that it's up to you to hear what's good and what's not.
Remember that you are working inside an envelope, too low and the signal will never be turned into audio for you, to high and everything will be turned into audio including the bad stuff."
People have been screaming for depth, depth, depth for awhile now.
One way to achieve that on modern detectors is to increase the gain and amplify everything more so than the detectors from an earlier time.
That should get you deeper, but also amplify other things that could color or cover up some good info in that amplified signal.
Then there are sometimes filters added in the circuits that might have been installed to smooth out this wall of noise and make more sense of things...I assume.
Thus...high gain, Low noise.
Some detectors let you control gain manually, many don't...I assume that would be the bulk of the silent search type without a manual threshold.
Not sure if this is all true, but it is a theory I have using the small amount of info I have absorbed on this subject.
True or not, I think it works like this...
The Compadre is retro, a throwback to an earlier time before all this gain was added and all the modern circuitry was tweaked so we could get deep and still make sense of the sounds.
The circuitry is stone age compared to what we have now, probably less filters and other enhancements than the current state of the art designs.
I am not saying it is better or worse than modern circuitry designs, just different.
Maybe because of all that we get to hear a little more purer signal, with the least amount of "walls" between us and the conductive properties and true sounds of our targets.
Then there is the little higher frequency which might not matter all that much, but most believe the higher frequency units are better for gold searching.
Add it all up, whether it all works this way or not, in my experience you get an old detector that still has a place in this modern world and can still do remarkable things just maybe because it is so stone age.
The Tesoro people have actually admitted that regarding the Amigo and this one they made them too good...nobody ever planned or probably wanted an entry level unit to work this well.
To their credit they have continued to make them and sell them all these years, and when the came out with a unit and that larger coil and didn't charge one extra cent more for it than the smaller coil model, well, as an old retail guy I was astounded.
The modern cars are great.
You can get great gas mileage efficiency, super comfort, safety in all manufacturing from the brakes to the roof, motor power galore if you want it and much more than cars of an earlier age.
As much as all of this is cool and satisfying and makes me feel safe to spend time in and to drive these modern cars, what I wouldn't give for a few more spins around the block in my old 70' Charger.
MarkCZ
Well-known member
A while back there was a Tesoro plant tour video posted., in one part of that video and bench line up with different Tesoro videos the interviewer ask something about depth or gain?? and the Tesoro employee stated,
Most detector have a internal gain of "10,000 Times" he said the Tesoro Tejon and LOBO had a gain of "1,000,000 Times" I don't believe they included or excluded the Compadre.
Then after seeing that video I decided to send Tesoro a question along the lines of the gain of the Tejon and the Compadre all I got was the a reference to Shout and Echo and the louder you shout the louder the echo, "And The Tejon As A Lot More Shout"
Mark
Most detector have a internal gain of "10,000 Times" he said the Tesoro Tejon and LOBO had a gain of "1,000,000 Times" I don't believe they included or excluded the Compadre.
Then after seeing that video I decided to send Tesoro a question along the lines of the gain of the Tejon and the Compadre all I got was the a reference to Shout and Echo and the louder you shout the louder the echo, "And The Tejon As A Lot More Shout"
Mark
MarkCZ
Well-known member
After watching the tour video a couple of times its seems that they do reference the Compadre has "High Gain" but it seems to get tossed into all of the other models when they refer to the Tejon and the Lobo as super or very "High Gain"
I noticed this during the part of the interview when explaining the beginner model not being a high gain and very easy to use with only one knob and turn on and go, that being the Compadre.
So, it sounds to be like that the gain of 10,000 to 1 could be considered a level of high gain, while 1,000,000 to 1 is extreme high gain.
Mark
I noticed this during the part of the interview when explaining the beginner model not being a high gain and very easy to use with only one knob and turn on and go, that being the Compadre.
So, it sounds to be like that the gain of 10,000 to 1 could be considered a level of high gain, while 1,000,000 to 1 is extreme high gain.
Mark
MarkCZ
Well-known member
The only reference I have for "FAQ" is frequently ask questions, so I'll play dumb and say I'm not sure what that reference is to?
Gold prospecting detectors like the Lobo are designed to operate in or around Black Sand! and the reason for that is often times Gold is in areas where black sand is present, black sand is HIGHY MINERALIZED, as for the Tejon it has the same high gain of the Lobo but its not geared for prospecting in or around black sand.
Mark
Gold prospecting detectors like the Lobo are designed to operate in or around Black Sand! and the reason for that is often times Gold is in areas where black sand is present, black sand is HIGHY MINERALIZED, as for the Tejon it has the same high gain of the Lobo but its not geared for prospecting in or around black sand.
Mark
REVIER
Well-known member
Texadillo said:I always thought the Compadre didn't incorporate "low noise-high gain circuitry".....that it used the standard type of circuitry with the expanded discriminate range of 180 degrees
All so confusing...
Ya know what...
All you really have to know is that the thing works and works well.
Amazingly well.
slingshot said:
I've been detecting at this one play ground and have found some pretty good stuff in the grassy around it, but nothing, I mean nothing, where all the play equipment is located. It's covered in pea gravel. It should be loaded with rings and coins. I might take my Compadre one day and check it again.
tabman
This is one of many 'tests' I do with any detector, and is also a good example I will be demonstrating this Saturday to a County Sherriff's Jeep Patrol/Search & Rescue group who use the agency's detectors for crime scene searches.slingshot said:
It's all too easy for a spent cartridge case, bullet, or even an entire cartridge to be lost on ... and under ... pea gravel, nasty mineralized sand, or small rocks that are often in a parking lot or other area. These kinds of nasty substances can easily mask a target and/or grossly alter any audio response or visual [size=small](TID and numeric VDI)[/size] read-out. Not all scenes they search are bare ground, grass covered, etc.
Yes, the Compadre WILL hit on most targets when under an inch or two of pea gravel, and so will the T
