bigscoop
Gold Member
- Joined
- Jun 4, 2010
- Messages
- 13,541
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- Location
- Wherever there be treasure!
- Detector(s) used
- Older blue Excal with full mods, Equinox 800.
- Primary Interest:
- All Treasure Hunting
Excal Threshold "Pitch" Changes:
There’s a lot more going on with the Excal then many hunters realize, the threshold pitch changes being one area that I think goes largely ignored by both Disc and PP hunters. Most of us are listening for threshold breaks, rises, wavering, etc., but few of us really focus on those unexplained pitch changes that often seem to occur at random with no other noticeable indication of a possible target. However, something caused that change in pitch and sometimes these pitch changes are worth investigating.
The threshold is the most sensitive searching process within the entire machine, which is why so many hunters prefer to hunt in PP mode. But disc hunters need to pay attention to this threshold as well because these unexplained changes in threshold pitch can often provide clue of targets that are the very edge of the machine’s process capabilities. Extremely deep targets can cause these changes, as can small/fine chains, etc. Sure, mineral deposits can also cause them as well. So how can you tell the difference?
I hunt in disc mode a lot and I can tell you first hand that these threshold changes can represent good targets from time to time. The first thing I do whenever I encounter one of these changes is determine if the change went higher or lower. Most often these changes will be lower, to the point of sounding very low and grainy. However, other times the threshold will become a bit lower but it will remain smooth and pleasant sounding, more of a mid-tone, if you will. When this happens you really need to investigate the source of this change.
Whenever I encounter one of these desired threshold changes the first thing I do is switch to PP mode and I’ll run my scoop past the coil to reset the threshold to a higher pitch. Once this is done I’ll sweep the coil over the suspected area until I get the threshold change again and I’ll keep repeating this process until I’ve isolated the “X” on the surface. If I’m really lucky I may even get a threshold break but not always. In either case I’ll start removing some sand until I can start getting a solid response, something that is much easier to do with the small coil since it can be easily stuck in the hole for a much closer look. A lot of times the source will just up and disappear, a sure sign that it was just a tiny piece of surface clutter or a pocket of mineralization, but a lot of times you’ll start to encounter a consistent response or an obvious tone that will result in the recovering of a target. Weather you’re in Disc mode or PP mode don’t ignore those threshold pitch changes because they just might lead you to something shiny and pleasant.
There’s a lot more going on with the Excal then many hunters realize, the threshold pitch changes being one area that I think goes largely ignored by both Disc and PP hunters. Most of us are listening for threshold breaks, rises, wavering, etc., but few of us really focus on those unexplained pitch changes that often seem to occur at random with no other noticeable indication of a possible target. However, something caused that change in pitch and sometimes these pitch changes are worth investigating.
The threshold is the most sensitive searching process within the entire machine, which is why so many hunters prefer to hunt in PP mode. But disc hunters need to pay attention to this threshold as well because these unexplained changes in threshold pitch can often provide clue of targets that are the very edge of the machine’s process capabilities. Extremely deep targets can cause these changes, as can small/fine chains, etc. Sure, mineral deposits can also cause them as well. So how can you tell the difference?
I hunt in disc mode a lot and I can tell you first hand that these threshold changes can represent good targets from time to time. The first thing I do whenever I encounter one of these changes is determine if the change went higher or lower. Most often these changes will be lower, to the point of sounding very low and grainy. However, other times the threshold will become a bit lower but it will remain smooth and pleasant sounding, more of a mid-tone, if you will. When this happens you really need to investigate the source of this change.
Whenever I encounter one of these desired threshold changes the first thing I do is switch to PP mode and I’ll run my scoop past the coil to reset the threshold to a higher pitch. Once this is done I’ll sweep the coil over the suspected area until I get the threshold change again and I’ll keep repeating this process until I’ve isolated the “X” on the surface. If I’m really lucky I may even get a threshold break but not always. In either case I’ll start removing some sand until I can start getting a solid response, something that is much easier to do with the small coil since it can be easily stuck in the hole for a much closer look. A lot of times the source will just up and disappear, a sure sign that it was just a tiny piece of surface clutter or a pocket of mineralization, but a lot of times you’ll start to encounter a consistent response or an obvious tone that will result in the recovering of a target. Weather you’re in Disc mode or PP mode don’t ignore those threshold pitch changes because they just might lead you to something shiny and pleasant.
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There does come a point when hunting too hot can be counter productive though. "Stability" is what I always try to maintain, otherwise you can create so many unnecessary responses it starts to become difficult to recognize the ones that really count. On my machine, and each machine can be a little different, I can run a lot hotter in disc then I can in PP. If I try to run too hot in PP I get a lot of threshold wavering and a lot of unnecessary pitch changes. Actually produces a type of masking effect within the threshold. In each mode I run as hot as I can without disrupting my two S's,...."Smooth and Stable".
Put it on the charger for about 12hrs and it should be fine. 
