#476
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I think it's a special modulation of an infrared beam
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#477
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Well then, everything is in your hands ..... improve, why are you asking permission. If everything is fine with the disassembled static camera.
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#478
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Thank you my friend
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#479
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Yes, for nothing ..... I didn?t immediately understand either .... But with IR or UV it?s still very tight. And yes, there is not enough time.
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#480
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any improvement with your IR UV ?
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#481
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No improvements! I am a radio amateur lacking knowledge, and most importantly time. So far, the result is 3 meters, and then on beer cans or aluminum at a not significant depth. Ik does not work on my polegon. Perhaps he dug deep into the target.
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#482
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Becarefull... modulated IR beam can creates faulty signals to Mineoro magnetic receiver...
__________________
Geo |
#483
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i think the best use of infrared is esteban's LRL IR with TDA
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#484
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I don't know it...
__________________
Geo |
#485
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what can i add to my mineoro fg90 magnetic receiver for make is a good lrl ???
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#486
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very promising experience with fg90
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#487
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FG90 never will be one of the best lrl..
__________________
Geo |
#488
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why , it' very stable , sensitive , directional , it catch LF and VLF broadcast .........
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#489
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Because there are other .. much better
__________________
Geo |
#490
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maybe
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#491
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__________________
Geo |
#492
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Video is taken 11...12 years ago..
__________________
Geo |
#493
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link doesn't work
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#494
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Sorry but i can't do something.
It is a video from me attached on a Brasil site!!! The size of file is very big to attach it here..
__________________
Geo |
#495
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successful recovery, but different from the original, detects a can of coca cola from 40cm,
there is a very weird thing about power supply |
#496
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I have never seen such a perfect receiver , I intend to add a VHF
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#497
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Hi dear forum members, I added an oscillator to my FG90, connected to a small 100mH inductor, it can react to an aluminum foil at 35 cm, I need the opinion of Geo and J-player , I hope to have a fast answer , thank you .
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#498
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I added a TDA7000 connected to the magnetic receiver at the IN point, very sensitive to static charge, but a decrease in sensitivity of the magnetic loop ,
what is the ideal voltage at the IN point without having a decrease in sensitivity ??? |
#499
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abdou2014 send me schematic of your FG-90 and PCB pictures at both side of device. Upload at some Iranin host site and send me a link privately here at mailbox. I will see, could I help you with your RF-sniffing mod. OK ? There are many "underwather reefs" which must be taken to the account if you want to work it properly and detect the gold.
The problem you have is magnetic cross-coupling. Could be solved. Need more info. Regards ! |
#500
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thank you very much dear friend, you gave me hope, tomorrow I will take pictures and send them to you
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