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#1229
11-11-2016, 08:31 PM
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not worked
hi dear franco
my device not worked emeter TR1 is 8Mhz signal . baise TR2 is not signal . and i test diffrent LC tank resonance between 100Khz to 140Mhz but my device not worked pcb (( pcb file upload here ,with altume designer ))and all parts is ok so i make device with 4069 pll but not worked. i dont no help mee best regards 
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#1230
11-12-2016, 08:54 AM
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Hi Franco
Is it possible to amplify this phenomenon transmitter Should separate transmitter receiver http://store1.up-00.com/2016-11/1478940511511.png
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#1232
11-12-2016, 11:42 AM
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Hi all,
I will post again a few tips that I have given above, I recommend the quartz version, simpler to build and debug. The oscillator is a Colpitts without the emitter capacitor which it has proved not necessary but that you can put in the event that the stadium is not in oscillation. The signal at 8MHz based on TR2 is so small that in practice it is not measurable, it is best to measure the DC output on the TR5 emitter. Best Regards
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#1236
11-15-2016, 08:52 AM
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Hello dear Franco;
Hope you are well and your face is smiley. Just to inform you, I prepared several tests on my test field which contains of several copper coins in 30cm depth, the circuit revealed nothing, but in my friend's test field which contains more than 1Kg coppers in 1 meter depth buried for several years, your circuit revealed it by 1 LED in 1 meter distance. Hope it's helpful.
__________________
I Will Win, Not Immediately, But Definitely.
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#1237
11-15-2016, 10:33 AM
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hi dream man,
This is useful, you can try to extend the antenna and raise the gain, in sensor stage and in the display stage. Best Regards
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#1242
11-16-2016, 10:46 AM
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Hi sakher,
Look at my helps, if you follow my instructions you will set the stage for maximum sensitivity.
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#1245
11-16-2016, 10:00 PM
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dear franco
first i disconnect the xtal out put was 5.07 and sensor working vice versa i touched the antenna voltage drop up to 5.1v then i decrease c13 to 470pf and c14 to 390pf out put was been zero and connect the xtal c2=c3=c4=1pf out put voltage is 5.14v now if i touch the antenna voltage decrease to 5.12v is this correct or no?
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#1246
11-17-2016, 10:46 AM
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It's correct, the important thing is that there are no auto oscillations and obtaining the maximum amplification.
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#1247
11-17-2016, 12:53 PM
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I greet the members of the forum ...
I ask forgiveness for my English ... After trying enrolled in forums ... My turn and I publicly thank Franco to manufacture. I am an amateur in electronics and maybe I can not give precise information to the members who they asked me in my email But I can upload my work and experiments I did and maybe some help ... https://postimg.org/image/jord1udjp/ https://postimg.org/image/yfll52yqn/ https://postimg.org/image/bsu4hujnt/
__________________
my best wishes
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#1248
11-17-2016, 01:03 PM
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I made many boards always 2 pieces to end up in the Franco project with two copper sides of the receiver, but I put the ground at the bottom.
Stis trials I 1 lrl 6 capacitors of C10 from 18p to 47p and a lrl with 12 capacitors from 18p to 1n to some I caught metals or some of the other nothing. while at home the signals caught by 8-9 m. the tester to 4-5 meters. https://postimg.org/image/6lfvb7v9f/ https://postimg.org/image/jlz2rj9il/ https://www.youtube.com/watch?v=tyDgBLH_2Bg 6 capacitors https://postimg.org/image/ri4l7gox1/ https://postimg.org/image/q37x4seor/ 12 capacitors https://postimg.org/image/70nxtlgur/ https://postimg.org/image/q8k4p7bn7/ https://www.youtube.com/watch?v=ib72FWjxYTw
__________________
my best wishes
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#1249
11-17-2016, 01:54 PM
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THANK YOU
 THANK YOU VERY MUCHQuote:
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#1250
11-17-2016, 03:01 PM
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Quote:
Panos P 
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Tnx
Linear Mode
