DIY Pulse Induction Detector (Impulse III)

[Bush]

Someone turned up out of the blue & spun this link on PI detector building kit.
It may help anyone venturing into the DIY field.
https://www.worldradiohistory.com/UK/Electronics-Today-UK/ETI-How-To-Build-Gold-Detectors.pdf

 

[Bush]

Looks like the homework has been done on larger coils for the sdc.
i was out of the picture for some time . ...
Target Signal vs Amplitude in Hyperphysics.
Oh ! Well ! ... Spare working coils is not so bad.
I`ll just re-wind the windings into within original 8`` coil spec with what i have.
The 4500 might like the larger ones.
Closing Ceremonies i`d say.

With one exceptional thought.
200 x 200 piece of tin foil air tested with Minelab sdc OEM 8`` repaired coil .
Max reading of 800mm.
The modded 12`` NF air test reading maxed out at 950mm but is it sdc stable ... .