Full tones falsing on shallow ground (Mineralized outcrops)

[Samuel_Champlain_FTW]

I was out in the woods hunting today in an area with granite outcrops. When using full tones, I was getting high pitched background noise when going over the granite. When I switched to two tones, etc... the noise left. It was much, much quieter, even though it would false occasionally.

I am wondering, is it because of my settings that this high pitched falsing would happen on full tones? I played with sensitivity, and didn't really help too much when turning it down. I tried notching the high end of the scale, but no luck either.

I went to an adjacent 2 tone program, and every time I would get a signal I would check with the full tones. I could hear all targets with both programs.

TL;DR --- The rocks are hot, but they don't seem as hot when not in full tones. Why?

Settings

8khz
Sens 90
Reac 2
Silencer -1
TX 2
Notch 00-00
GB was 86 and stable
Disc 2.1
Iron volume 1
Full Tones

 

[CZconnoisseur]

Try ground notching 85-90 and see if that works

 

[Samuel_Champlain_FTW]

Ah yes, the ground notch. I forgot about that one...

I'll give it a shot next time I encounter the same issue with the FT. Ty.

 

[sprchng]

I've encounter siimilar issues with an upper 80's GB number and no indication of mineralization on the bar graph. I attribute it to non oxidized magnetite(often present in granite)clumps in the mild soil creating signals. You might also increase the silencer a notch

 

[Big Boys Hobbies]

I bet it was the granite. I have seen it do weird things to detectors!

 

[Samuel_Champlain_FTW]

If it wasn't so expensive to assay, I'd snap a piece off and send it in for testing! lol

 

[ecoast]

... I 2nd increasing silencer a point