Uploaded December 2012 | Updated September 2026, 2 hours ago

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Does the Tuning for the GPP really work?
Does it find things, you will not find otherwise?
I'll show you in this Video an easy way to tune the GPP.
And you will see the result in action.
You can see why the tuning makes sense.


This is how it works:
The Tuning Metal must be away from the search coil when the GPP is turned on.
Beeing switched on, the GPP will adjust internally.

Then you move the Tuning metal a bit forward just until you hear a sound.
Then move it back again just until no sound can be heard.
Thats all. Now the GPP has maximum strenght.
It looks like that additional piece of iron increases the range of the magnetic field of the GPP.
Using this system, there are no permanent changes to the device needed.
Therefore the warranty is untouched.