I agree that is how it is supposed to work... But not how mine works..
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same here. larger iron targets often give me a "crackle" sound, but not necessarily the full iron tone. other iron targets will give higher-than-40 tones. very old rusty iron targets (including small nails!) tend to show up all over the board, with very inconsistent readings. if it sounds like junk, it probably is..... but not always.
size, depth, age, grade of the metal, orientation of the item, ground moisture (or lack of), proximity to other items in the ground.... any and all of those factors come into play.
i don't look at the screen anywhere near as much as i used to, i try playing things by ear rather than by numbers and about the only time i'll use any iron descrim is if i'm in an extremely trashy area. 95%+ of the time, i run my At wide open, no descrim and 8 sens.
in short, if it sounds like it could be something good,
dig it but those mixed .tones.... they can be almost anything. when in doubt, it's best to dig it rather than to wonder what it
could have been. yes, you'll be digging more trashy stuff, but you'll be getting more better targets and a much better knowledge of what your machine is telling you about your various targets.
Pete
