ИГА-1 Russian Long Range Locator

[Pahom]

[/QUOTE]Clear ... and in the cave chest !!!!!! And what current consumes the device? I also began to collect IGA-1. Slowly for now, but little by little the board is picking up the details.

[Geo]

Don't remember exactly the current but it is not big. I use 10 batteries 18650 for +-15V.

[Pahom]

Originally Posted by Geo

Don't remember exactly the current but it is not big. I use 10 batteries 18650 for +-15V.

Understood thanks!

[Geo]

I made all tests on summer but i have read that IGA works better on winter, so it is time to give it some tests more...

[humhum]

Originally Posted by Geo

I made all tests on summer but i have read that IGA works better on winter, so it is time to give it some tests more...

Yes, IGA all time works ,because not works with Elektromagnetic waves and İons potential.

[Dubulumach]

My new lrl project IGA-1M.
Work only with original Russian components.This one is cave and hollow locator. Meassure phase shift at the border between two layers. Work at LF. Use capacitive antenna. Very complex schematic with multiple nested feedbacks. Work mandatory with highly polished antenna surfaces. Here is layout.

[Geo]

Hi Dragan.
Congratulation for the new project.
From my experience it works with similar american ICs (maybe a little better) except the K140UD13.
From what Dragomir said, antenna is the most critical part.

Regards

[Dubulumach]

Thank you Geo !

Yes i agree with you Geo,IGA 1M need perfectly made antenna.
I need to know what kind of dielectric ring was used in IGA-1M ?


There is reason why air haven't used as dielectric insulator.




Regards!
Dragan

[Geo]

Hi Dragan.
At my Iga i use teflon.
The reason that air haven't used as dielectric insulator is because the case is metalic so is needing at least one insulator.

Regards

[Dubulumach]

Hi Geo.

Yes teflon is excellent insulator. Thank you.

Hard to find in Serbia. Need to search at ebay. I have got 2 K140УД13 operational preamplifiers. Very interesting component. There are some secrets inside for fine tuning not shown at schematic. Email me for more info privately.



Regards

[Geo]

You can email me your secrets although my Iga works fine.

Regards

[Geo]

here a photo with insulator...

[Dubulumach]

Looks perfect Geo.

Probably the best antenna you had built.

It's most important it work, with easy detect caves.

Best congratulation !

[Geo]

The problem is that don't work at every areas, especially near to sea... (as Dragomir said...)

[Geo]

I am looking for the original schematic of power supply of the IGA-1.
Does anyone has it???

[Dubulumach]

Here we go my friend.




https://www.picho.st/image/B7p4S

[Geo]

This is not the original schematic.
There is a reason that i ask for this schematic, other way my power supply with 10x 18650 is OK.

[Dubulumach]

Hi Geo.

Of course if isn't original IGA-1M power supply. I don't think so we can found original schematic in public.
Only way to get correct and original design is reversible engineering of original power supply. Maybe Dragomir can post schematic because he is only man of this forum who has original IGA-1M.

Regards
Dragan

[ERDOGAN37]

Hello,

I want detailed information about the operation of the ig1 device.
What are the filter stages for?
How to distinguish between metal and cavity.
thank you

[Geo]

Did you read all the posts of this thread???

[ERDOGAN37]

hello geo,

Yes, I read all the messages. But I could not find information about the filter tap switch.
I would appreciate if you give me information about the detailed operation of the device.

Thank you.

[ERDOGAN37]

Hello,
I think there is no one on this forum site who can provide information about the ig1 device,
I have completed the Ig1 device, I will soon share the working video of the device.
Thanks for help.: Lol:

[aft_72005]

Hi all

I remember the circuit schematic ИГА-1 was here.
But no matter how much I searched here..it's not there now.
If anyone has the schematic, please re-upload it.

[Geo]

it's here... read post #61

[aft_72005]

Originally Posted by Geo

it's here... read post #61

Yes . seeing it ... thank you