Lrl from Italy

[abdou2014]

I have not the same results. did i do an error in component location . can you verify my diagram please

[FrancoItaly]

Sorry but I have not used this PCB for my lrls, I have not designed this PCB and at the moment It's difficult to me to understand if there is some error.
Regards

[abdou2014]

Please Franco can you give me a pcb of your lrl ,
I built all version of your lrl and I always put mistakes

[mustefa ubram]

Originally Posted by abdou2014

Please Franco can you give me a pcb of your lrl ,
I built all version of your lrl and I always put mistakes

hi abdou2014
this is correct pcb for me.crystal version
g.l

[abdou2014]

THANK YOU MUSTEFA BUT I CAN'T OPEN THE FILE . I TRIED WITH PROTEUS 8.1 ERROR

[sinclairuser]

Originally Posted by abdou2014

THANK YOU MUSTEFA BUT I CAN'T OPEN THE FILE . I TRIED WITH PROTEUS 8.1 ERROR

you need winrar, or 7zip http://www.7-zip.org/a/7z938.exe

to open this file its compressed, download 7zip from above link, its safe, when installed, 7zip will unzip it, the file you need is inside the opened folder.
make sure you unzip the file simply opening it is no good.

[abdou2014]

I tried everything and it not work

[abdou2014]

Ok I Managed with Sprint Layout. Mr Mustefa I did not understand the position of the outside potentiometer P1 at the PCB . can you help me

[mustefa ubram]

çHi.you can open with sprin layout software this file.
sorry i am in travel.
best wish

[FrancoItaly]

I would like to know the author of this video some details on the type of buried metal and with what orientation you have the greatest signal:

https://www.youtube.com/watch?v=yR3tzT2Jd-g

[dojranski]

Hello franco

40 cm depth ..2 gold rings 4 grams of 18k gold ..40 days buried .. the beginning of the film is West East..
end of the film the north south…best signal north south
the output signal dc of the TR5 emitter is 5.6V….
sorry for my bad english..
Regards and thanks for your project

[FrancoItaly]

Hi Dojranski,
I'm glad you managed to run my LRL, now you're ready for a real field research! I hope that others succeed. 40 cm for two gold rings are out of reach for most of the metal detector. The lrls are much more sensitive than metal detectors and this makes it virtually impossible to verify all the signals of the LRL beyond the range of metal detectors.
regards

[Nicolas]

Originally Posted by dojranski

Hello franco

40 cm depth ..2 gold rings 4 grams of 18k gold ..40 days buried .. the beginning of the film is West East..
end of the film the north south…best signal north south
the output signal dc of the TR5 emitter is 5.6V….
sorry for my bad english..
Regards and thanks for your project

Hello dojranski very nice test dear thanks to share it . How about your LRL's ?

[Nicolas]

Originally Posted by dojranski

Hello franco

40 cm depth ..2 gold rings 4 grams of 18k gold ..40 days buried .. the beginning of the film is West East..
end of the film the north south…best signal north south
the output signal dc of the TR5 emitter is 5.6V….
sorry for my bad english..
Regards and thanks for your project

Hello dojranski very nice test dear thanks to share it . How about your LRL's ?

http://www.geofazma-detectors.tripod.com

[FrancoItaly]

Hi Nicolas,
It's my last lrl, the quartz version.
Regards

[Nicolas]

Originally Posted by FrancoItaly

Hi Nicolas,
It's my last lrl, the quartz version.
Regards

Hello Franco come stai ? yes i know that

[FrancoItaly]

Hi Nicolas,
I'm fine and you?

[brs]

Hi dojranski
The video has become the desire to assemble a Franco again the question of whether any post new currency it

[brs]

Sorry
, I mean new additions I use a translator

[detectoman]

hello francoitaly i go begin make your lrl, i have a question for you, i appreciate very much your answer, can you say me please if i can put in you circuit a cristal piece whit 10.160 mhz? or obligate i need exact frecuence of 10 mhz?, i not have this but other cristal osccillation frecuence fractions, for bad english excusme, thanks dman

[FrancoItaly]

Hi detectoman,
Every frequency in the range 3 -10Mhz works well, I think it's ok also 10.1 or 10.2Mhz or similar, I have not noticed any changes. It would be interesting to try with a harmonica to 59Khz (frequency gold?) For example 59Khz X 100 = 5.9Mhz.
Regards

[FrancoItaly]

To test it would be better to use a LC oscillator and not a quartz, but at this moment I cannot try.

[Astrodetect]

Hello franko
As I see your last 8MHZ Sensor LRL, you use the same principle as Mineoro DCH85 but you have connected directly the oscillator to the input of Receiver. This is the same as DCH which instead of connecting directly to the receiver, the oscillator uses a coil behind the antenna of the receiver.Same thing i think.What do you think?

[FrancoItaly]

As I said in my LRL oscillator only it serves to generate a reference signal and the phenomenon modulates this signal. The signal is not transmitted in the environment, but I do not know well mineoro lrls. My lrl derives from a RF sniffer that accidentally came in oscillation at about 4Mhz.

[FrancoItaly]

I decided to change my LRL and run at 59Khz (gold frequency) but at the time I am away from home and I can not test it. In practice it is a species of regenerative receiver, but the oscillation is continuous, even without signal at the input. To achieve this a part of the signal, using 4.7K trimmer and 100pF capacitor, it is send to the coil. For the coil we may use about 100 turns and we have to choose the right value for the capacitor placed in parallel to the coil. The emitter capacitors of the second and third transistor they set the stage gain of each transistor and the value must be determined experimentally. I repeat that I have not made this change, and I hope that some of you have wanted to do it.
Best Regards