NCtoad
Forum Supporter
I just read that Dankowski forum post by NasaTom referenced by Digger27 in this post: http://metaldetectingforum.com/showpost.php?p=2662649&postcount=3
He doesn't mention anything about the threshold setting (maybe the F75 doesn't have a threshold setting like my F70). I'm finding the threshold/sens settings combinations make a big difference in depth...at least in air testing. For example: In air testing a modern dime at disc set at 21, I tried the threshold at +1 and sens at 40 and got a clean, but fainter audio signal at 8.5". However at the same sens of 40, but with thresh at -1, I got a clean audio signal at only 5.625"...quite a difference. If I keep the same sens of 40 and bump the thres to +3, I get a clean audio at 9.25"
Now bump the sens up to 90: at thresh at -1, I get a clean audio tone at 9", but with thresh at +1 I get a "jumpy" tone at 9-10"
If I take the sens all the way down to 1: at thresh at -1, I get a clean audio at 3.25", but with the thresh at +1, I still get a faint, but clear tone at 5.5". I also tried it with the thresh at +3 and got a faint, but clear tone at 7".
So it seems like threshold settings have quite a bit of influence on the depth. However I'm new to metal detecting and this is my first detector, so any explanation of what's going on with the thresh/sens combinations would be welcome.
thanks, Scott
He doesn't mention anything about the threshold setting (maybe the F75 doesn't have a threshold setting like my F70). I'm finding the threshold/sens settings combinations make a big difference in depth...at least in air testing. For example: In air testing a modern dime at disc set at 21, I tried the threshold at +1 and sens at 40 and got a clean, but fainter audio signal at 8.5". However at the same sens of 40, but with thresh at -1, I got a clean audio signal at only 5.625"...quite a difference. If I keep the same sens of 40 and bump the thres to +3, I get a clean audio at 9.25"
Now bump the sens up to 90: at thresh at -1, I get a clean audio tone at 9", but with thresh at +1 I get a "jumpy" tone at 9-10"
If I take the sens all the way down to 1: at thresh at -1, I get a clean audio at 3.25", but with the thresh at +1, I still get a faint, but clear tone at 5.5". I also tried it with the thresh at +3 and got a faint, but clear tone at 7".
So it seems like threshold settings have quite a bit of influence on the depth. However I'm new to metal detecting and this is my first detector, so any explanation of what's going on with the thresh/sens combinations would be welcome.
thanks, Scott