Mineoro 2-Box -- 492 feet range?

[Max]

Hi,
have found an old commercial example of what I mean:

it's heatkit DF-1 model of transistor radio direction finder , used also for navigation (before GPS age , so it's grandpa's GSM !).

This model used the commercial AM broadcast band so: 540KHz to 1620KHz.

I think is really similar to what we see there at passive receiver

Look at the enclosed ferrite stick on top... can be rotated by the control knob on front panel to desired angle to find maximum instrument deviation, so maximum signal strenght.

Best regards,
Max

[hung]

He,he,he. How a reunion of some skeptics EEs here turned the inspection of a LRL circuitry into an analysis of a time machine.
The wild guesses are unique!

PS. Hey, I just found Carl in one of the physics forum I watch.
It was quite a surprise watch how humble he is in asking questions to the experts there in order to clarify his own doubts.
I wonder why he did not rely on his own forum as a possible first option for this. Maybe not to run the risk of scratching Carl's 'know it all' appearance?

Merry Xmas everyone.

[hung]

This is the pistol in Morgan's hands.

Press free and get with the code:

http://rapidshare.com/files/78960653/Field_test_Esteban_LRL.MPG.html

Merry Christmas

Hi Esteban,
Yes. The sonalarme nice beeping sound. Send my best regards to Alonso.

[FrancoItaly]

Hi Max

I think that this circuits will detect the Earth magnetic field :

http://www.geocities.com/capecanaveral/lab/5185/electronics.html#GEOMAGNETIC

and

http://www.geocities.com/capecanaveral/lab/5185/circuit1.html#SENSITIVE

Perhaps it can be useful for to envelope your idea.
Merry Christmas and happy new year

[Max]

Hi Max

I think that this circuits will detect the Earth magnetic field :

http://www.geocities.com/capecanaveral/lab/5185/electronics.html#GEOMAGNETIC

and

http://www.geocities.com/capecanaveral/lab/5185/circuit1.html#SENSITIVE

Perhaps it can be useful for to envelope your idea.
Merry Christmas and happy new year

Hi Franco,
thanks for your links , find them interesting.

First is based on a Clapp oscillator schematic and give beating note at Earth mag field coupling variation at ferrite; second is true BFO based on two simmetric Clapp scheme oscillators with 2 ferrites (kinda of induction balanced BFO).

Both are interesting to see effect of Earth magnetic field on the beating frequency the operator can hear.

But returning to our problem of passive receiver I think it's much more easy thing: there isn't oscillator, so it's just a receiver like old crystal receivers but with transistor amplifiers.

So I think purpose (though there's similar principle of operation) is different and is just giving indication of right positioning of device (parallel to soil and east-west orientated) one can check at any moment, e.g. before start walking, enabling the receiver (using the relative position on the 3-pos. slider switch). And all that just cause of a well known transmitter used as "reference" for east-west orientation.

Maybe I'm wrong on that, but it's an idea that could open new ways to understand presence of receiver there.

Merry Christmas,
Max

[Esteban]

Hi Esteban,
Yes. The sonalarme nice beeping sound. Send my best regards to Alonso.

Hi Hung. OK.

[Max]

Hi Esteban,
just my curiosity...about AM stations in South America...

I know there is a strong AM radio station in Sao Paulo, Brazil running on 1100KHz and with 200KW RF power.

It's maybe a "Radio Globo" station ?

Do you receive it from Paraguay ?

I think that with right stuff one can receive it also from the Moon ... but I don't know if you receive it well in central part of continent; I think you can and signal must be strong. Am I right ?

Actually I can receive it strong (but not always)...and I'm really far from it... maybe more than 10000-12000Kms far away (don't know exactly)!

Kind regards,
Max

[Esteban]

Proposal

What is the type of detector wich become commercial in few time as a new think, the new toy for the detectorist?

OPEN discussion showing details is not the best. I think the best is discuss this in clossed thread with password between few members:

J_Player, Administrator, Morgan, Max, Qiaozhi, Fred, Hung, Putrechigi, FrancoItaly, Detectoman, Geo, Michael and Esteban.

These name are here regarding participation in this thread.

Think in this possibility: you put all the schematics and details here and other with some modifications launch in market in few time. SURE. Of course, you'll think you are "heros" because solve the enigma. And???? Simple: Nobody will recognize all your job.

Remember: here there are visitors catching opportunities for to build it and convert in simple commerce in few time. The rest, about rights, etc., are theories.


Regards

Esteban

[Esteban]

Hi Esteban,
just my curiosity...about AM stations in South America...

I know there is a strong AM radio station in Sao Paulo, Brazil running on 1100KHz and with 200KW RF power.

It's maybe a "Radio Globo" station ?

Do you receive it from Paraguay ?

I think that with right stuff one can receive it also from the Moon ... but I don't know if you receive it well in central part of continent; I think you can and signal must be strong. Am I right ?

Actually I can receive it strong (but not always)...and I'm really far from it... maybe more than 10000-12000Kms far away (don't know exactly)!

Kind regards,
Max

Hi Max

At the night you receive very well many stations from Brazil, Argentina, Moscow (in the Cold War era), Egypt, BBC, 1,000!!! In special I hear tons of emissions with my old radio Grundig model Locarno!!! This was great for to hear almost all!!! Maybe from Mars.

But regarding strong local AM stations, you can hear in the simple voltage regulator!!!

[Max]

What is the type of detector wich become commercial in few time as a new think, the new toy for the detectorist?

OPEN discussion showing details is not the best. I think the best is discuss this in clossed thread with password between few members:

J_Player, Administrator, Morgan, Max, Qiaozhi, Fred, Hung, Putrechigi, FrancoItaly, Detectoman, Geo, Michael and Esteban.

These name are here regarding participation in this thread.

Think in this possibility: you put all the schematics and details here and other with some modifications launch in market in few time. SURE. Of course, you'll think you are "heros" because solve the enigma. And???? Simple: Nobody will recognize all your job.

Remember: here there are visitors catching opportunities for to build it and convert in simple commerce in few time. The rest, about rights, etc., are theories.


Regards

Esteban

Hi Esteban,
I haven't solved the enigma...and others same thing: we just gave some more light but there are other and more important details about e.g. coils and round container stuff that we can discuss in private if you want, if there is a good reason of doing so we can do that way.

Let me know.

Kind regards,
Max

[hung]

I know there is a strong AM radio station in Sao Paulo, Brazil running on 1100KHz and with 200KW RF power.

It's maybe a "Radio Globo" station ?

Hey Max, some corrections:

Radio Globo is from Rio and it runs on 1220 KHz.
What's your point? You wanna listen the narration of Flamengo playing the soccer championship?
Regular RF power is not 'the most important'...

[Qiaozhi]

He,he,he. How a reunion of some skeptics EEs here turned the inspection of a LRL circuitry into an analysis of a time machine.
The wild guesses are unique!

PS. Hey, I just found Carl in one of the physics forum I watch.
It was quite a surprise watch how humble he is in asking questions to the experts there in order to clarify his own doubts.
I wonder why he did not rely on his own forum as a possible first option for this. Maybe not to run the risk of scratching Carl's 'know it all' appearance?

Merry Xmas everyone.

Merry Xmas Hung! I was wondering when you would show up.

By the way, there is a difference between speculation and guessing.
I sense you are starting to get nervous.

[Qiaozhi]

This is the pistol in Morgan's hands.

Press free and get with the code:

http://rapidshare.com/files/78960653/Field_test_Esteban_LRL.MPG.html

Merry Christmas

Hi Esteban,

In your video you do not show the green LED in operation. This is supposed to be something to do with tuning. Please can you tell us how you set this up?

Regarding a closed forum - we are currently discussing this, but you do not accept private messages.

[Morgan]

LRL Antenna enigma

Hi Esteban,

In your video you do not show the green LED in operation. This is supposed to be something to do with tuning. Please can you tell us how you set this up?

Regarding a closed forum - we are currently discussing this, but you do not accept private messages.

Hello
I agree with this "closed group" to work in LRL Pistoldetektor Antenna.
We must respect the inventor of this technology...
Maybe all together,we can discover more things

Happy Christmas to all

[gold24h]

From watching the video it apears that the knob on top is not a three posistion switch,it is a potentiometer with a on off switch,you turn it to the right and it clicks once,this turns it on,from then on the knob works as an ajustable resister to set the threshold of detection.I would like to build one of these but unless we can get the scematics simpler i do not think i can,what would really help is if we knew the operating princable of what it is doing.