Golden Mask Schematic

[amtech2005]

Hi amtech2005. Look at this http://www.geotech1.com/forums/showt...t=16524&page=3

Thank-You Maikl !! I see a lot of information on just those 3 pages .

HH.............Eugene

[maikl]

Hi amtech2005. Look at this http://www.geotech1.com/forums/showt...t=16524&page=3

[amtech2005]

I haven't such luck to see Eureka so far, nor to test it or work with it.
Each detector is somehow similar to another one.
Yet, i think Eureka is to much complex to be compared with something much simpler like GM.
Eureka is having uPC and huge pile of various IC's.
I don't think GM is anyhow related to any Minelab model.

Ivconic , where can I find information on the Magnum/Wave you talked about ? Thank-You


HH.................Eugene

[ivconic]

I haven't such luck to see Eureka so far, nor to test it or work with it.
Each detector is somehow similar to another one.
Yet, i think Eureka is to much complex to be compared with something much simpler like GM.
Eureka is having uPC and huge pile of various IC's.
I don't think GM is anyhow related to any Minelab model.

[amtech2005]

Ivconic Look Here !!!

Mr. Ivconic !!!! Look what I found , do you remember this machine from 1992 that disappeared , Eureka Ace for Europe a dual , 8 and 19 khz with difficult soil toggle mode !!!!
Is it coincidence or am I dreaming again about circuit similarities !! Not too much posted now , but See Attachments :

Have a Great Day Everyone !!

Best Regerds..............Eugene

[ivconic]

Despite shaved IC labels it would be really piece of cake to make reverse ee on it.
I really don't understand why those people do rasp IC labels on such simple designs?
If it was a bit more serious or complex design, with some specific ic's - than it would make a sense to scrape labels and confuse the others... but on such simple design is really trivial to do that.
To stop who?
This can stop from copying, only, complete beginners and nobody else.
Generally, for unknown opamps, dual or quad, IC sockets are installed and few models are checked.
So sooner or later proper opamp will take the place. Opamp is opamp. We do know very well what kind of opamp is suitable on given place in design.
So it is really trivial to sand labels from opamps.

[ivconic]

...

[ivconic]

The Bulgarians need to stop calling it Bandido Golden Mask on their forums . I remember they were selling complete Magnum circuit boards a few years back on a .BG site and then maybe they were modified slightly to what we see today .

The 8 khz is odd , but maybe has better canceling to rusty nails . I need to study more before I get excited and post ideas too fast !! I only see one 14 pin [st microelectronics] ic labeled Ez DU809 ? We need better pictures.

HH.............Eugene

It is TL074 and follows after RX front end. As expected.
So up to that stage (including it) it is close to Wave.

[amtech2005]

Photos are still unusable to make even closer guess, nor tracing.
Yet, roughly, we can see RX with transistor front end and TX with bunch transistors too.
That's why i assume it must have something to do with Magnum/Wave...

The Bulgarians need to stop calling it Bandido Golden Mask on their forums . I remember they were selling complete Magnum circuit boards a few years back on a .BG site and then maybe they were modified slightly to what we see today .

The 8 khz is odd , but maybe has better canceling to rusty nails . I need to study more before I get excited and post ideas too fast !! I only see one 14 pin [st microelectronics] ic labeled Ez DU809 ? We need better pictures.

HH.............Eugene

[ivconic]

Photos are still unusable to make even closer guess, nor tracing.
Yet, roughly, we can see RX with transistor front end and TX with bunch transistors too.
That's why i assume it must have something to do with Magnum/Wave...

[ivconic]

Getting Closer , but the last picture is still very poor !! Only 1 ic is clear . My next guess : The circuit is a mix of Bandido/Troy ? It will be a Great Project for this Winter Thanks Everyone .

Best Regards............Eugene

I don't see Bandido nor Troy (especially not Troy!) similarities but more to Magnum/Wave.
Maybe he meant "Bandito" not "Bandido" ?
Because "Bandito" was also some older Bulgarian effort.

[amtech2005]

hey great

the ic´s are not sanded i hope that our specialists here can now start to to draw their traces

Getting Closer , but the last picture is still very poor !! Only 1 ic is clear . My next guess : The circuit is a mix of Bandido/Troy ? It will be a Great Project for this Winter Thanks Everyone .

Best Regards............Eugene

[bernte_one]

hey great

the ic´s are not sanded i hope that our specialists here can now start to to draw their traces

[eclipse]

low quality pics.. GM2 or 3 they should be the same

[mikebg]

Hello Ivconic and Everyone .

I am reading from Bulgarian Forum that the Golden Mask 3 took 2 years of work and is made by Mr. Rossi from mostly a modified Bandido II circuit ?

Golden Mask I and 2 also from Bandido . But who knows where HF-18 khz Golden mask version came from . Magnum TX was 15 khz by the way . Wish we had sharp PCB photos . Very interesting topic started here !!


Regards.............Eugene

Eugene,
There are also PI machines named "Golden Mask Pulse Ver.1.0".

http://www.lefouilleur.com/forum/golden-mask-pulse-ver10-vt102472.html

http://mdetectors.com/product_info.php?products_id=233&osCsid=ef5284b76b2b80605d117bb78774adf2

http://www.youtube.com/watch?v=W9j_l_JviJM

Here is the golden mask of Thracian King Seutus III find 2004 in Bulgaria.