Andy Flind MFD.

[abdou2014]

give me a little time I will make a historical modification

[abdou2014]

Oops, the batteries have dropped, it's a pity I still have not detected the electric watch, but I have good results

[abdou2014]

the watch I used has no coil, it is not normal with this high sensitivity and I have not been able to detect it, I think it must this model ???

[Geo]

If your watch is n't the proper... use a wall clock... they have the same machine.

[abdou2014]

COOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOL

[abdou2014]

I succeed, a flash every one second, thank you Geo !

[abdou2014]

Hi all, I'm going to do another experiment, and tried to work in FM mode, I want to have the opinion of Geo?

[abdou2014]

Hi, what is the minimum and maximum temperature favorable for working with an LRL?

[sinclairuser]

ANDY WITH DIGITAL DISPLAY

hi abdou, why did you cover the picture?.

[Guard]

Hi.
All these years i received so many mails to post the schematic of Andy Flind.
Today i decided to post it here.
Article is in PDF format and it is from EPE magazine.
I would like Admin to tell me if i can do it or No. Article is from year 1995.

Regards

Thanks Geo

I somehow finish the MFD.
Ferrite 6khz, 1nf, no preamp, more gain to ic1b, a 1$ chinese clock from +10cm and from sides from 25cm.
Nice mfd, need mods
Inside lab, it beeps in any spark, and from 7m. to the Northest walls (metal bars).
Away from 50Hz to mountains, has no compass "thinks" and no bips !
I like the gold-bell-sound

Regards
George

[Dubulumach]

1st mod of MFD


Ive forgot to put 470pF in negative feedback in parallel with 1Meg biasing resistor.

Best Regards
Dubulumach

[Dubulumach]

2nd mod.

[Nicolas]

Haha... now you have a Cryfton OBMD-I.
From what i remember you are not very good.
My device was detecting my watches (a Tissot and a Longines) near to coil.
Also was detecting a China watch from 5..6 cm. I saw a video from a member where his lrl was detecting the watch from 9..10 cm far.

Hello Geo you have right

[Geo]

Hi.
I found this video at Utube.
MFD detects a watch from 20cm.
Also a very good construction.
Congratulation!!!

https://www.youtube.com/watch?v=t8QYU_1DG4Q&persist_app=1&app=desktop&client=mv-google&gl=GR&hl=el

[rxlock2]

https://www.youtube.com/watch?v=NiGuoENQNVg&app=desktop

TV detection over 10 meters