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  #201  
Old 11-22-2020, 08:30 PM
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sure I know that since many years ago, I talk about ancient buried gold
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  #202  
Old 11-23-2020, 07:12 PM
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Hi.
My modified Mineoro can locate ancient coins (at good terain) from 30...35 m easy.
Look here.... http://www.longrangelocators.com/for...7&postcount=15

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  #203  
Old 11-24-2020, 06:19 PM
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Quote:
Originally Posted by Geo View Post
Hi.
My modified Mineoro can locate ancient coins (at good terain) from 30...35 m easy.
Look here.... http://www.longrangelocators.com/for...7&postcount=15

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Dear Geo , very good finding , but (max 30-35m) distance is very short for Mineoro .
With experiment it finding from Km , but only in good wheather coundition .

Regards .
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  #204  
Old 11-24-2020, 07:46 PM
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Don't believe what they say!!!
So long distance is possible only with ferrite antenna.
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  #205  
Old 11-24-2020, 08:03 PM
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Quote:
Originally Posted by Geo View Post
Don't believe what they say!!!
So long distance is possible only with ferrite antenna.
Master , I not mean for Original Mineoro , I mean for my home made Mineoro , that find big Object from Km , this is different from Original Mineoro , but also use Org. Mineoro Sensor .

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  #206  
Old 11-25-2020, 04:02 PM
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At my tests the Mineoro sensor (Ion Chamber) did n't give good results .
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  #207  
Old 11-25-2020, 04:09 PM
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Last years i don't interesting for very long distance. 50m are enough for me.
I am interesting more for 2 things....
a. the ability to find the center (pinpoint) and
b. the ability to work at more difficult conditions

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  #208  
Old 11-25-2020, 05:00 PM
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Quote:
Originally Posted by Geo View Post
Last years i don't interesting for very long distance. 50m are enough for me.
I am interesting more for 2 things....
a. the ability to find the center (pinpoint) and
b. the ability to work at more difficult conditions
About my home made Mineoro is so:
a) Find of Center is around 1m X 1m
b) No , not works in difficult condition , only in special coundition .
But my last build Alonso PD works in all wheather counditions up to 300m ,
and with center pinpoint around 30cm X 30cm .

I've seen results by experimenting a lot in the real field, also in my garden .

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  #209  
Old 08-25-2021, 02:54 PM
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Finally i replaced the electric field detector with a difference one because the first was not so stable. The new is very stable and has more gain.
I built a similar version, magnetic + electric receivers, my electrical receiver is based on TDA7000 ,

what is the inductance of your ferrite magnetic field receiver and the diameter of the wire ?

can I have the schematic of your electric 3 ICs receiver ?

Thank you Geo
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  #210  
Old 10-09-2021, 03:55 PM
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Hi.
The coil inside the Pot Core has inductance 2mH.
I don't have the schematic of electric field detector, i lost most schematics before 2 years after a HD crash. I have only some pcb's. The basic IC is an INA-121...
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  #211  
Old 10-09-2021, 04:02 PM
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Thanks Geo
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  #212  
Old 10-14-2021, 04:40 AM
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greetings to newbies
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  #213  
Old 10-17-2021, 07:11 PM
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I built a new loop antenna for my mineoro, 494 mH I know it's too much but for VLF reception, I don't know the best is a large inductance with parallel picofarade or a medium inductance with parallel nanofarade ???
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  #214  
Old 10-17-2021, 07:15 PM
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2 mH according to Mr Geo it is not for a VLF reception , on what frequency does the antenna resonate with 2 mH ????
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  #215  
Old 12-13-2021, 04:30 PM
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Depended of the tuning capacitor.
A total capacitance of 500pf and an inductance 2mh gives a frequency near to 100Khz.
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  #216  
Old 12-13-2021, 06:21 PM
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Thank you very much
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  #217  
Old 11-21-2023, 05:10 PM
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Default FG90
Quote:
Originally Posted by Geo View Post
The antenna loop

Hi dear Geo .
Do you can help me about mineoro FG90 device?
I need the information of these two ferrite cores.
The infrared receiver of my device is defective, what type of infrared should I use instead?
https://s6.uupload.ir/files/img-2021...012-1_vzo6.jpg
<a href="https://uupload.ir/view/img-20211110-wa0012-1_vzo6.jpg" target="_blank"><img src="https://s6.uupload.ir/files/img-20211110-wa0012-1_vzo6_thumb.jpg" border="0" alt="آپلود عکس" /></a>
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  #218  
Old 11-22-2023, 05:26 AM
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Ferrite core of magnetic receiver is IP6 / 2000 (potcore).
I have n't details of the other ferrites back of the ion chamber.
FG90 has n't IR receiver
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  #219  
Old 12-06-2023, 09:53 AM
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Quote:
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front side....
I decided to replace the "electric" receiver.
I new one with more than 120db gain is ready. Now i try to fix it inside the new case.

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  #220  
Old 12-06-2023, 06:16 PM
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i have this schema but you made some mod , can you give info ?
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  #221  
Old 12-07-2023, 08:23 PM
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Nothing special. One more filter for 40Hz and up!!!
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  #222  
Old 12-07-2023, 11:19 PM
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i need details about input, there ara two 10M and Pot , how its connected ?
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  #223  
Old 12-08-2023, 07:21 AM
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One antenna for every input. Potentiometer was only for the test.
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  #224  
Old 12-08-2023, 06:12 PM
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i tried it with original schema and esteban pcb and don't work for me
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  #225  
Old 12-08-2023, 08:31 PM
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For me works ok.
I need best weather to fine adjust it....
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