What i see......
555 works at 44Khz.
Problem is around the BC548.
BC548 with 290uH and 16.8 nf parallel to coil is tuned at 72.1 Khz...
The 68 Ohm resistor is so low compared with the Z of the tuned circuit, so i believe that the capacitor 100nf who is connected at the collector of the bc548 must calculated as a 100nF parallel to the other 2 capacitors (16.8nF). So with inductance 290uh and 116.8 nf capacitance the transistor is tuned at 27.34 Khz.
So we have 3 different frequences that don't match....
Your opinion???
What i see......
555 works at 44Khz.
Problem is around the BC548.
BC548 with 290uH and 16.8 nf parallel to coil is tuned at 72.1 Khz...
The 68 Ohm resistor is so low compared with the Z of the tuned circuit, so i believe that the capacitor 100nf who is connected at the collector of the bc548 must calculated as a 100nF parallel to the other 2 capacitors (16.8nF). So with inductance 290uh and 116.8 nf capacitance the transistor is tuned at 27.34 Khz.
So we have 3 different frequences that don't match....
Your opinion???
FG90 is a broadband receiver.
It also works on MHZ frequency of garage door openers.
Maybe it does not matter if the transmitter circuit is efficient or not.
For a hand-held version which can make an FG90 to beep from 2 meters distance, I think you do not need a 555 for oscillator, and do not need a ferrite.
The battery can be a computer cmos battery at 1.5 volts.
So the hand-held version can be much smaller... the size of a coin.
Hi J_P.
The schematic that i attached is the schematic that robalocarapanda put at "Mineoro website" thread. I want the opinion of technicals about the frequency that it is tuned. If really use it to make a stronger field from the object then need more power than the small size that you say.
Hi J_P.
The schematic that i attached is the schematic that robalocarapanda put at "Mineoro website" thread. I want the opinion of technicals about the frequency that it is tuned. If really use it to make a stronger field from the object then need more power than the small size that you say.
Regards
I do not think the circuit you posted is well-tuned.
I also think it is not necessary to have a well-tuned circuit to make a Mineoro locator beep.
I saw in Carl's post where he said it would beep at his electric fence, and I read how it would beep at a garage door opener transmitter that broadcasts over 400 MHz.
I also read where it will beep when you press on the brake pedal to a car to make the brake lights turn on.
This makes me think that it is not important what exact frequency the transmitter is tuned to or even if it is not tuned.
We can see from the Mineoro circuits that it has a broadband receiver which will pick up nearly any RF noise from the air.
After everything I have read, My opinion is Alonso did not waste much time calculating the proper inductance and capacitance for any particular frequency.
I think he made a transmitter using parts which he thought were in the approximate range that would work, then checked to see if he heard beeping from his transmitter.
When he heard beeping, then he probably decided he was done building the transmitter.
He only needed to put the transmitter in a plastic bag to protect it from moisture, and it would to the job to make beeps, so nobody would know the hidden gold was stolen.
There is no technical information which says this is a correct circuit, because it is not a technically correct circuit.
In order to make a technically correct circuit, you would first need to know exactly what frequency the FG90 is most responsive to, then design a transmitter to produce that frequency, and test it to insure it is at the correct center frequency.
However, this is not a practical approach when you are in a hurry to steal a buried gold target far away from your laboratory.
I believe that if this particular oscillator was transmitting at 50% higher or lower frequency than what the measured frequency is, then it would still cause the FG90 to beep.
I think Alonso knows that the exact frequency is not important, so he did not waste his time to tune to a precise frequency.
I think Alonso knew that mis-matched parts would work ok.
If he didn't hear any beeps, then he could always add a few more turns on the coil, or change the 555 resistors until he did hear some beeps.
Any attempt to analyze this particular circuit could be easily considered a waste of time, because we can already see it was a sloppily built transmitter that was not designed for any kind of optimization, but rather to provide a quick and dirty solution to cause beeping that would focus at a particular location.
But, of course, what I believe could be wrong.
Maybe he tuned this transmitter to very precise frequency in his laboratory with calibrated instruments long before he made any field trip.
Who knows?
What i see......
555 works at 44Khz.
Problem is around the BC548.
BC548 with 290uH and 16.8 nf parallel to coil is tuned at 72.1 Khz...
The 68 Ohm resistor is so low compared with the Z of the tuned circuit, so i believe that the capacitor 100nf who is connected at the collector of the bc548 must calculated as a 100nF parallel to the other 2 capacitors (16.8nF). So with inductance 290uh and 116.8 nf capacitance the transistor is tuned at 27.34 Khz.
So we have 3 different frequences that don't match....
Your opinion???
Alonso apparently did this transmitter to use only an harmonic frequency and not a fundamental Frequency.
27.34 maybe is an armonic frequency of 82 khz and this is the freq that Alonso use here and maybe the transmitter work well
my friend the electronic say , the frequencies are from 52khz to 90khz in fg80 , fg90, and others and 110 kHz to tesla
Hello
this message is for all LRL skeptics and LRL adepts.
our friend robalocarapanda is under atack by MINEORO,who said for him to remove the video MINEORO FRAUDE,or he will sufer the consequences for difamation ,in justice.
this message is for all LRL skeptics and LRL adepts.
our friend robalocarapanda is under atack by MINEORO,who said for him to remove the video MINEORO FRAUDE,or he will sufer the consequences for difamation ,in justice.
lets give our suport to robalocarapanda if he need ,
I THINK THERE ARE MANY PEOPLE IN THIS FORUM NOT SATISFIED WITH MINEORO PRODUCTS, THE CLAIMS FROM MINEORO NOT CORRESPOND TO THE REALITY
LETS PUT OUR OPINION IN YOUTUBE FOR MINEORO TO SEE ROBALOCARAPANDA IS NOT ALONE !
well,the youtube video coments are written in spanish,that i can translate the mineoro warning to robalocarapanda and also they said the hide transmitters is only the way to IONIZE the ground for mineoro locators work better...i dont think so...
Treasurenet LRL forum, top (sticky) thread, page 20, post #394.
It gets funnier: Mineoro's front man on the Youtube comments is now claiming that White's uses the same fake "ionizer" trick to make it look like their metal detectors work. To my knowledge not even Hung is so brazen as to make up something so bizarre as that.
click on Achados
follow to and click on Ouro no Para em Nov/2012
This is worse than Art's famous photoshopped gold pan!
--Dave J.
yes,its realy AMAZING how they can go so far,but acusing robalocarapanda of difamation is realy break the line,the man only put the true in the youtube videos.
yes,its realy AMAZING how they can go so far,but acusing robalocarapanda of difamation is realy break the line,the man only put the true in the youtube videos.
the forum member robalocarapanda already remove the true video from youtube to avoid problems with MINEORO team acusations...
this transmitter is the proof that Mineoro is cheating and betraying!
Why?
Because the argument:
"This transmitter only improves the Mineoro detectors neverthless and already anyway existing capabilities in finding stuff from far away distance."
is a cheap excuse and lie!
If this cunning and evil transmitter really would "improve" those scam-boxes, it would be the VERY FIRST obligation of Mineoro to include it into their shiping or selling packages, especially for countries at oversea, where the Mineoro proven never works!
But of course that was never an option, because this transmitter only is some kind of direction-transmitter, the same as it is also used to track wild deer or animals out in the jungle etc.
A totally different question is:
Where the hell Geo has got this schematic from?
The good possibility would be:
He got it from the guys who discovered the cunning bags-player-tricks of Alonso & Co.
seem this is the case if the following statement of Geo is true:
"The schematic that i attached is the schematic that robalocarapanda put at "Mineoro website" thread."
So the next question is: is robalocarapanda pro or versus Mineoro?!
The bad alternative would be:
Geo itself has shady connections to Mineoro and Alonso personally.
(but in this case it's highly questionable why Mineoro should give away their secret fraudster trick techniques to Geo)
Anyway, it must be totally clear to every single person who is an active member of this forum, that the behaviour and the unscientific doings of such companies like Mineoro and OKM also will shine a very bad light on the credibility and the good reputation to everyone who is contributing to the LRL topic.
Simply spoken:
Those big firms are fraudsters and the little wannabe LRL-tinkerers and amateur-testers here in this forum can't be much better! Either they are fooling theirselves or they are betraying intentionally the whole public!
If a person in this world has pride, he constructs or invents something real working and useful and he knows how to explain why and how his machine is really working!
Nothing of such correct methods can be found at the LRL-topic, only stupid tries of making look something pseudo-scientific or cheap tries to make test or videos make look like that those would show something real concerning "LRL technique really is able to find something".
Damn, put your cards on the table and stop messing around!
It starts with all those on the market already established LRL-sellers an their suspicious ominous products and it also goes to our in secrecy dwelling homebrew-LRL-freaks and their wannabe working circuit-boxes including their pseudo-scientific "how-it-works" stories.
Or times could come where you all will be threated like criminals!
After the now becaming public Mineoro fraud with their hidden transmitters you LRLtinkerers like Geo, Morgan, Andreas & other no longer do yourself a favour by hiding your LRL-business-affairs, if you do this you are looking the same shady, fishy and suspicious than those!
And if you don't tell us clearly if you are PRO or AGAINST Mineoro we must argue that you are on of the secret compagnions of them, using already one of their (Mineoros!) not working wanna-be circuits (serbian Alonso passive receiver schematic or similar stuff) with that you wanna try to deceive LRL-interested people here in this forum with your wannabe-LRL-homebrew detectors and "good looking" tests.
btw.
It is extremly stupid wanna flying to the moon and back if the technique isn't already so good that you can fly around the world!
What I wanna say:
long - longer - longest
FIRST you should be able to built a "LRL-detector" that is provable able to detect something at 5 meters, next at 50meters and only if this works you can try to find something at 500meters or even 5km!
And not the different way around, as LRL-firms & you try it here!
Enough told, the knowledge of this posting already extends the worth of 50 bucks and I'm not interested giving more info to persons who just wanna sell their mostly useless LRL-info here for money!
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