- #1
Thread Owner
Finally I started to locate metals with my 2,L rod /MFD contraption but there doesn't seem to have any metal discrimination. I've downloaded the free tone generator program from http://www.nch.com.au/tonegen/index.html on my laptop and simply plug into the ground the wires from the headphone jack. Playing around with various frequencies and waveforms (square,sine,triangle) I've detected and recovered various metals (bullets,cooper wire,aluminum bottle caps,rusted nails) I only get one signal line at a time and it stays there until I dig out the metal that has caused it (pinpointing with a metal detector) Once it's out of the ground usually I get another signal line that leads me to a completely different type of metal. Even worse ,adjusting the volume level (at the same frequency) sends the signal line to different points and there's also no corelation between the volume/amplitude of the signal and the size or type of metal recovered. Does anyone have any idea's on how to atchive discrimination?
Anyway if someone wants to try this and doesn't own a laptop ,using the same program you can create a file with a chosen frequency and a finite duration ,for example 1/2 hour,save it on you're computer as a WAV. file and then simply download it to an MP3 player to be able to take it to the field.
Anyway if someone wants to try this and doesn't own a laptop ,using the same program you can create a file with a chosen frequency and a finite duration ,for example 1/2 hour,save it on you're computer as a WAV. file and then simply download it to an MP3 player to be able to take it to the field.