Falcon MD20

[IBGold]

Noro, my coil is wound on a 10mm ferrite rod 100mm long using .2mm enamelled wire tightly wound about 50mm long and measures 153uh and 1.5 ohms it is now shielded and covered to make it waterproof so a picture will not help you.

Regards, Ian.

[Noro]

For ibgold please post image for your coil sensor, what is number of coil ,diameter of wire.In my schematic only 33khz obtain rezonance for this metal detector.Tnx.Noro!

[WM6]

Ah overseen, seems it is about movable copper/brass ring on Falcons sensor:

[WM6]

Hi I fitted the copper band today and yes I can see changes to the waveform by moving the band but as it is a clone I do not think the company will give me the alignment procedure I was hoping someone here who had built one had the correct tune-up procedure.


Regards, Ian.

Hi. Can you draw a sketch where those copper band is located (near to coil or over the coil)?
Probably most of us haven't idea of what exactly you are talking about with this "copper band", cause we never seen Falcon in vivo.

[IBGold]

Hi I fitted the copper band today and yes I can see changes to the waveform by moving the band but as it is a clone I do not think the company will give me the alignment procedure I was hoping someone here who had built one had the correct tune-up procedure.


Regards, Ian.

[bklein]

I have one of these and I called the company and the guy there talked me through the tuneup procedure as it wasn't working right. It depended upon certain manipulations of the inductive ring (and trim pots) but unfortunately I don't remember the details.

[IBGold]

I have not fitted the copper band yet as I figured it was only for tuning the coil but will fit it tomorrow and see if it makes any difference to the coil but I think my problem is with the trimmer settings.

Regards, Ian.

[homefire]

There was a Copper Band to tune the Coil. You slid it up or down to adjust the coil.

[WM6]

Hi ......to I will worry about the copper band when I get the unit working.

Regards, Ian.

Hi Ian

I don't understand this your sentence. Can you explain what you have in mind?

[IBGold]

Hi greylourie, yes I have read all that is here I have waveforms but no audio but without an alignment procedure I have no idea where all the trimmers should be set to I will worry about the copper band when I get the unit working.

Regards, Ian.

[greylourie]

Hi Ian,

Think there may be a few hints on these three pages. But no real alignment setup described. I do vaguely remember some talk of a copper collar being involved, probably on some other site.

[IBGold]

I have built this with a hand laid out board using Thomas's as a template but using SMD resistors and capacitors does anyone have an alignment procedure template.

Regards, Ian.

[Noro]

tnx Thomas ! yes i have mistakes in lay.

[Thomas]

Check for mistakes

[Noro]

falon

Please do not laugh at me, just wiring test
In addition my laser printer is not too good, therefore routes are thicker diameter.
For bernte_one most likely only weekend I will have some time workingfalcon 1.zip