Lrl from Italy

[afshin]

Hfe=1000 is a great value, are you sure that is not darlington? if the LRL is too sensitive can self oscillates or may be sensitive to compass effect.

alright! Mr Franco, bravo!
that is darlington type 2N5526

http://alltransistors.com/transistor.php?transistor=4951

http://www.semicon-data.com/transistor/tc/2n/2N5526.html

[afshin]

Mr Franco,bc183c ft is 150Mhz,
isn't better that we use a transistor with ft=200 Mhz and hfe=420 ? The hfe is the same value as the bc183c approximately , but the higher ft maybe better, because the frequency band is wide Compared to the previous state and the amplification will be better for the Received frequency, what is your opinion Mr Franco?

[FrancoItaly]

Yes all transistors BC....C with ft=> 150 and hfe>400 are OK.

[FrancoItaly]

I think it's possible to use transistor with ft=200 or more and only one turn for L1, but I have not tried.

[pigeon]

pcb

pcb franco

[Napsterce]

@Golden Nothing new, i'm trying to make a stronger transmitter and see what will happen.

@abdou2014 I used BC550C in my version, it's working good.

[afshin]

@Golden Nothing new, i'm trying to make a stronger transmitter and see what will happen.

@abdou2014 I used BC550C in my version, it's working good.

Napsterce what kind of transmitter are you making?

[brs]

Distant and remote from towns and Towers communications areas to be a transmitter urges buried metals

[afshin]

OK! Brs, thanks

[folharin]

expensive franco ytali friend!, I hear you say that forum member getting gold coins meeting your LRL .this information is true?

[folharin]

xpensive franco italy! friend, I hear you say that gold coins FIND fórum member with your LRL .this information is true?

[FrancoItaly]

Hi folharin,

Yes a member of this forum has informed me privately that he found with my LRL 26 gold coins from the early 1800s to a distance of 15 m and buried almost 1 meter deep.This shows that the gold buried for a long time is detectable at a considerable distance, and that on the contrary buried by little time is practically not detectable, obviously with my LRL. It would be interesting, as has already been done, try the infrared.

Best Regards

[hadi-dindar]

very nice franco.
can you reshare all information about this lrl.
we cant sense any thing with your lrl.
but you sense coins in 1m with 15 distance !!!!

[abdou2014]

Mr Franco what did you mean by (try the infrared) ? can you share with us this work !

[FrancoItaly]

AS I said this discovery was made by a member of this forum who wants to remain secret, he told me (by email) that he used my LRL and of course a metal detector. He lives in a country of Central America. As for the use of infrared for now it is just a theoretical project and for the moment I do not have the chance to build it.