Tesoro Cibola

[gost373]

cibola

ello,
I want construir a Tesoro detector cibola the accompanying drawings is FUNCTIONAL? Someone on this forum did this detector? experience feedback, thank you

[bernte_one]

ello,
I want construir a Tesoro detector cibola the accompanying drawings is FUNCTIONAL? Someone on this forum did this detector? experience feedback, thank you[ATTACH]36136[/ATTACH]

i have not seen this variant as working detector
the other Project with µController seems to work Project Name is sibola
i build myself cibolo without µController from a design layout from ivconic
but i never reached the Performance like an original cibola (i had it some years ago, the green one)

maybe the latest scheme from russian Forum is better, do you have pcb layout for this scheme?

[gost373]

You have realized this detector ? A scheme without peak ( ucontroleur ) do you have the schemas and pcb ?
Thank you.

[bernte_one]

you can find all in this thread just start reading from page one

[porkluvr]

ello,
I want construir a Tesoro detector cibola the accompanying drawings is FUNCTIONAL? Someone on this forum did this detector? experience feedback, thank you[ATTACH]36136[/ATTACH]

Hello. Tesoro improved their transmit oscillator so the tx signal output is really clean, much better than on their Sabre series.

And the negative supply really pumps out -5V. Good job, Tesoro! (Hooray.) OOh ooh, and the Cibola uses full wave detection. What's not to like?

The reverse engineering guy did a really good job, but I think the audio has a bad problem.

The diodes on the CD4024 are facing the wrong direction. They will cause high current draw because the audio duty cycle is upside-down. What you've got to do is simply reverse the three diodes and give them a slight pull-up (R9=330k should be about right). That should make a big difference. In my picture, C9 is there to kill the diode switching artifacts in the simulation, but is unnecessary in real life, so you don't need it.

It would work, but this clone would be a battery killing machine with those diodes facing the wrong way. I have wired parts of it in LTspice. I never build anything (everybody knows that) but I might have to build this one I like it.

I also simulated this thing with the diodes facing the wrong way, and it's a mess, people. Believe me.

[bernte_one]

i have one analog cibola clone here, i can test it in real

[porkluvr]

Please let us know how it turns out!

[sled]

I just run a simulation on the Cibola transmitter in LTSpice, it turns out it will oscillate at ~13.4kHz (resonance at ~13.6kHz) instead of the ~14.5kHz as the original Tesoro. I'm not sure if this is the way it should be.

[porkluvr]

[QUOTE=sled;217933]I just run a simulation on the Cibola transmitter in LTSpice, it turns out it will oscillate at ~13.4kHz (resonance at ~13.6kHz) instead of the ~14.5kHz as the original Tesoro. I'm not sure if this is the way it should be.

I saw that too. Umh, rounding errors?

[Koala]

On md4u.ru. Appears someone has a working firmware in September 2015

https://youtu.be/tSoiF78HP0c

VCO for pic16f873 on GSL board

Interest in the project then seems to have been lost.

[kt315]

On md4u.ru. Appears someone has a working firmware in September 2015

Interest in the project then seems to have been lost.

the firmware was written by russian guy. tesoro HAS to TAKE this guy to them! NOW!

[porkluvr]

ooh the Cibola uses full wave detection. What's not to like?

I took another look at the Cibola and it is not what I am needing. I totally overlooked the ground balance being a preset. Of course the GB control could be moved to the front panel, but I want something to fit in my existing Silver Sabre II cabinet (smd version). The cabinet has room for either GB or tune on the front panel, but not both.

That's really too bad because I had a layout almost ready to go. I'm not going to do it; it will remain unfinished or perhaps morph into something else, some other time. It is not going to fit where I originally intended.

Instead I've worked up an SMD layout for the Diablo II. It should fit nicely, with not too many knobs and dials. I will need to drill a couple of more holes... but that's not much of a problem. And there is gold here in potty town, not like you might find out in CA or AZ, but it's here, so Diablo II earns a spot in my old SSII cabinet. It's about time.

The Vaquero looks like the Cibola, only with manual ground balance... and there are several on ebay at very reasonable prices. Vaquero looks nice, or maybe I'll choose the Tejon instead (to buy). Who knows? Something for coins and everything.

The US government insisted that I file taxes before I could request financial aid for next school year. I'll actually get a refund because I paid for school last year (can't complain about that). So, there will be a few dollars to play with, until I hit ebay again.

[sevar12]

Hi, what is the best metod and how properly nuling coil ? 20 degree Rx to Tx or 20 degree after first op amp to Tx , or minimal voltage after first op amp .

[Gwil]

Minimal voltage.

[kt315]

nulling by replacement of balance loop at first stage. nulling by placement of small piece of cooper or closed wire loop at second stage.