TESORO GOLDEN SABRE

[ivconic]

walter
Don Bowers' schematic has fatal mistake in TX colpitts oscillator. look on my right sch of Cobra and you will see R3 is NOT 47k -!
(R10)
somebody (iwkonik?) losted the decimal point.

Short retrospective from most of the schematics available:

Bandido II .......... 20k
Bandido II uMax ..... 20k
Cutlass II .......... 20k
Cutlass II uMax ..... 20k
Amigo ............... 47k
Aztec ............... 47k
Cibola .............. 24k
Compadre ............ 47k
Conquistador ........ 47k
Deep Search ......... 47k
Eldorado ............ 47k
GMK cobra ........... 4k7
Golden Sabre ........ 47k
Golden Sabre Plus ... 4k7
Golden uMax.......... 47.5k
Inca ................ 47k
Pantera ............. 47k
Royal ............... 47k
Sidewinder .......... 47k
Silver Sabre ........ 47k
Tejon ............... 20k
Toltec .............. 47k
Toltec II ........... 47k

[Mr.Jaick]

"...Of course RX measures the same Freq since it simply Receives the TX. exactly my knowledge says the same thing but in that guide it says the rx tank should oscillate at about 16.1 khz!..."

Presuming that you check RX coil by connecting it at TX coil place. Than you'll see the different frequency, of course.
As for "mistake" made by William Lahr; there is no mistake at all.
At various Tesoro designs you'll see the same resistor vary from 4k7 to 47k.
At Bandido is 20k. Etc.
By strange coincidence i am having one TGSL on the bench right now.
I replaced 47k with 4k7 and i don't see any difference in behavior. Works the same.
2e coin detects at same distance in both cases. Disc, GEB, everything works perfectly smooth and same in both cases.
At the same time there is Bandido II uMax on the bench, with 20k on the place. Works just fine.
So?
If you pay too much attention on KT's rubbish; you'll get nowhere, that's for sure.
I saw part of the schematic you posted and i see dramatic changes in TX stage!?
What the heck you did there man?!
(rhetorical question)

yeah that is a standard type colpitts oscillator
now i'm going to change things to default and see if there'd be any differences (hopefully) i'll come back with results
but i have a question : how a transistor colpitts oscillator would oscillate at 16Vpp by using +8V supply??
that's pretty strange to me...

[ivconic]

W. Lahr NEVER made mistake on this, period.
Each diy that i made according to his retraced schematic; works alright from the first switching On.
W.Lahr is rock solid!
Why is this difference?
Due different voltage supplying the oscillator, simple as that.

[ivconic]

yeah that is a standard type colpitts oscillator
now i'm going to change things to default and see if there'd be any differences (hopefully) i'll come back with results
but i have a question : how a transistor colpitts oscillator would oscillate at 16Vpp by using +8V supply??
that's pretty strange to me...

Do you have oscilloscope?
Can you tell the difference between DC and AC?
Do you understand the "Vpp" meaning?

[kt315]

Royal ............... 47k
---
i learned Royal good because GMT king cobra is same. you write that do not know.

[ivconic]

Royal ............... 47k
---
i learned Royal good because GMT king cobra is same. you write that do not know.

[ATTACH]49360[/ATTACH]

Be a sport, waste just 2 minutes of your precious time, change your 4k7 with 47k and see what happens.
If supplied with 8 volts and than if supplied with 5 volts. 12 volts in your case.
Use oscilloscope and analyze the signal amplitude.
Than continue to be a sport just for 2 minutes of your precious time more and inform us here about your revelation.
Many thanks in advance!

[Nandor]

Mr Jaick

Don't even waste your time if you cant understand a simple Colpitts oscillator. This topic is not bad information! You are lazy to read and cant make a real PCB.

People here arguing with you are wasting there time also, explaning to you some really obvious things, many of us made several TGSL by the info posted here, if you are not able to make it work than it's your problem not others!

[Nandor]

somebody (iwkonik?) losted the decimal point.

Yet another toxic post from you.

Why?

[kt315]

Yet another toxic post from you.

Why?

leave it please out to go on my personality now. WITHOUT 'TOXIC' и прочие измышлизмы с твоей стороны.
я пишу ОШИБКА и указываю ГДЕ ОШИБКА. непонятно? - пиши в личку.
сам смотри - РЕЖИМ ПО ТОКУ транзистора в генераторе даже на взгляд ненормальный!
логичнее 4.7к а не 47к!

[ivconic]

10 108 posts on Geotech forum... and still so low knowledge and understanding of some basics in Electronics?
Hate to say; ignorance.
"...It is logical 4k7 and not 47k..."
Electronics is not based on whats "logical" and "not logical" but on strict laws and rules.
If you take the same oscillator and supply it with 5v,8v or 12v; it is not the same.
You must know that? Or not?
...
"Toxic" is when you refer to me with "iwkonik" or any other idiotic combination of letters.
I am member of this forum since 2006.
My nickname is so easy to remember. It has only 7 simple letters. "ivconic".
Only the totally brainless cretin can not remember this.
So...
You are polluting this forum, almost all the threads and topics on it, constantly with tons of rubbish and nonsense.
10 000 from your 10 108 posts are nothing but plain rubbish and garbage.
I don't know why administrators are tolerating this any more?
You are harmful person, with all your nonsense that you posted so far.
You are purposely misleading many new members that are coming here for the first time, to learn something.
With your constantly idiotic behavior you are making lot of damage to Geotech forum.
I really do not understand why administrators do allowing this?

[kt315]

10 108 posts on Geotech forum
---
227 pages of the thread and in every new post is a problem told. simplest schematic and is not working.

[ivconic]

And it will never start to work alright... as long as people reading your nonsense and intentionally misleading remarks.
Unlike your pathetic attempts to sell your pcbs on each topic here; i am not selling nothing relating to Tesoro diys.
So it works alright to me.
Don Bowers, Eduardo, Nandor... who else? Probably 100 people more; works for them quite alright.
It is quite alright and common to novices and new members to have certain problems in first attempts to make the detector.
Any other too, not only TGSL.
That's why we are here, to help them in process of making it.
That's how we built this giant topic with over a million of views!
So it works for everybody at the end; it is not working only for you?!
In the past i thought that you are just harmless fool.
Now i see that you are really malicious and pretty sick person with need for urgent hospitalization.
But if administrators don't give a damn and let you do whatever you want here; there is nothing i can do about that.

[kt315]

Unlike your pathetic attempts to sell your pcbs on each topic here
---
because i do perfecto boards, yes. i have just last 4 pcs of Delta Pulse. thats all. or 'Ivconic Magnetometer/Gradiometer' is free project?

[ivconic]

Unlike your pathetic attempts to sell your pcbs on each topic here
---
because i do perfecto boards, yes. i have just last 4 pcs of Delta Pulse. thats all. or 'Ivconic Magnetometer/Gradiometer' is free project?

Not free. Also not spread on all topics on the forum.
I am not annoying everywhere with it.
Nor i spit on your GMK attempt.
I never said neither one bad word about it, anywhere.
On contrary; i was thinking to order one pcb from you and try to make it.
...
Ok, time to quit this pointless thing.
Let it be your way KT315.
Do have long and happy life.
I really wish you that.
Cheers!

[Qiaozhi]

OK guys, calm down.

Also, I think you're all being unduly harsh towards Mr.Jaick. Personally, I think he's done a pretty good job of creating his own PCB.