MD3007 (Micronta or Seben?)

[s@mira]

can you give me more information about md3007 metal detector and it's coil.
[email protected]
quality and capacity of capacitor (C36) ?
what's number the around of md3007 coil?

[s@mira]

I had this few years ago. I did complete reverse eng. at the time. Also did some rearrangements on pcb. Later i made 20 copies of this device.
Actually it is not bad at all. Can not compete with Better detectors on market. Also can not compete with Tesoro Golden Sabre...but. It is pretty descent detector. Especially suitable for those who wants non-motion detector. It has descent discrimination, descen GEB, it has multitone audio, it has also LED discrimination - Red Led for iron, Green Led for coloured items, followed by audio. 3 working modes....
I used it many times on the field and had a lot of nice finds with it.
I am not sure that it has something to do with CScope (probably not) but it is designed and acting pretty simillar as CScope 1220B i used to have also...
I was and still am very lazy man, so i never traced out this to sketch schematic, i only reproduced it the way it is in original.
I am giving it here for you people as a gift! I do expect only one thing from you; if someone of you have good will to trace it out and draw schematic and of course to post it here later.....No obligations...
I guarantee this is fully operational without mistakes...so be free to make your own copy, you will pretty satisfied with it!
Regards!

can you give me more information about md3007 metal detector and it's coil.
[email protected]
quality and capacity of capacitor (C36) ?
what's number the around of md3007 coil?

[ivconic]

Really i dont remember, it was long time ago.
I remember only some 60 windings for TX and 200 for RX.
...

[s@mira]

thank you ivconic

[ivconic]

I am trying to trace out MD3007 pcb to make schematic from it. And even now it is clear that MD3007 is Magnum descendant. Also simillar to Micronta 4003. So i guess...first was Magnum, than Micronta 4003 and now MD3007! Each next a bit improved and better than previous one.
MD3007 has some own interesting solutions. For example 3 - pitched tone.
Would be good to see whole chronology from Magnum to last version, cose i do presume there must be some other model from this line...


Tracing not finished yet. I am exhausted and lost focus. I am giving here uncomplete schematic for those interested. If someone of you want to finish tracing; be free to do that.
Enjoy!