Lrl from Italy

[Qiaozhi]

Yes that is coreect but i will try to use the MFD transmitter with your lrl. Like i said, i hope that it will amplify the phenomenom field so it would be easier to be catched by your lrl. The MFD you have built was with powered L rods? By what schematic you have built the MFD? Thank you.

http://www.geotech1.com/cgi-bin/pages/common/index.pl?page=lrl&file=/projects/mfd1/index.dat

[FrancoItaly]

I don't remember well but the MFD was a NE555 oscillator and I touched the oscillator output,
my body was like an antenna. The frequencies were 32Hz for gold and 42Hz for silver, but, I repeat, the results were not satisfactory.

[dream_man]

hi all friends


i have built dream man pcb I use a bc190c place bc183c is that they have the same location.

i have not electricity in the pcb no power

help me soory for the little english

thank you

Hello pigeon;

[brs]

Hello my friends
Amplify the phenomenon of the field
MFD
Frequency that penetrates the ground
HZ , KHZ OR MHZ

[brs]

Do FM transmitter circuit, for example, it helps to amplify the phenomenon

[Napsterce]

Brs have you tried this or it's just an opinion? What should be the input of the fm circuit? Where to connect the output, in the ground like MFD or in air? Thank you.

[brs]

Just a question I'm not an expert in the transmitter circuit or phenomenon happens I hope that the experts the likes of Franco I support us with information

[FrancoItaly]

The phenomenon is very little known, even to many does not even exist. I do not think you can make changes without completely changing my LRL. My advice is to build my LRL and see that it works properly and only then can you think of some adjustment, mainly the L1 / C10 frequency. However, even so my LRL is quite sensitive, since I privately know that a forum member found some gold coins (dating back about 200 years ago) to 15 m away. Do not ask other details because I myself do not know them, but I have no reason to doubt. This discovery demonstrates that gold needs a long time to be revealed and therefore is not very suitable to perform tests.

[dream_man]

Hello dear Franco;
I did some tests by 2 months buried cooper and silver coins and unfortunately just one LED turns on near the test field. I tested your Varactor Idea along with L1 from 2 to 9 turns. In 2 turns, I have 5.5 volt which has low sensitivity to electrical waves like wireless phone (30 cm 3 LEDs will be on). On the other hand, when I increase the number of turns of L1, the output voltage drops and it goes to be more sensitive to the waves (3 meters 3 LEDs). I realized that lower output voltage brings more sensitivity.
There is another important point. If my test was right, it shows just 1 LED turned on. So I think we must increase the sensitivity in revealing section in display stage. Is it possible to do such idea by decreasing R1 and increasing R2 in display stage?
Thank you dear Franco. overall its my results.

[FrancoItaly]

Hi dream man,

Yes it's possible for have more gain to increase R2 and decrease R1, the important thing is to avoid compass effect. Also only one led on in field test it's acceptable, because there are many variables in play, metal type, soil type, time of burial. Test with wireless phone are not important, you have to test in a real field with buried target.

Best Regards

[dream_man]

R1 and R2 in display stage?

[FrancoItaly]

yes

[dream_man]

Thank you Franco. I'll test it and reply my results.

[pigeon]

Hello pigeon;

hi dream man
thank.but i have problem the lrl not work les not work?!

[mustefa ubram]

hi franco
I've tested the sensor output with 3 -2-1 capacitor of 1p.(c2-c3-c4)

The output voltage for each of the different

with 3 capacitor:2.5v

with 5 capacitor:5v

with 1 capacitor:6.2v
Which is the best situation?