Excal and nulling

[RC]

I have been out every day for a month on our beaches. Setting are Disc1, Sensitivity6, Volume full, threshold just at buzzy bees, on disc. When i hit some iron i hear it null out. Sometimes the beez come back in 10 seconds. Sometime they come back after ten minutes.

Question is this normal ?

 

[GeorgeinSC]

I think minilab calls it tone hold. I experience the same thing with my Xcal. If I run over a good target it tells me about it. So I don't worry about the threshold not coming back quickly. I do run sensitivity a little hotter. I try to run it where it only falses a little from time to time. On my beaches that is around 8 or higher.

 

[bootyhoundpa]

Sweeping the coil over your scoop can sometimes help it get back to that mosquito high pitch buzzing sound ... I don’t like when it gets stuck on that low pitch growl either..

 

[dewcon4414]

Pitch hold is used on the Xcal much like gold machines to better I’d weak signals that often were missed. That long null is recovery before the machine resets. You don’t get that in PP mode. The Xcal is the one machine that HATES iron.

 

[Greg (E.Tn)]

What if you're water hunting, and the "Low Pitch Growl" is the threshold.

So you continue to sweep, go over a spot, then the threshold disappears but comes back as a high pitch.

Is it possible that was a good (but deep) target, to deep to generate a signal, but affect the threshold?

 

[gfatizzi]

That can be only one of 2 things: A deep good target at the edge of detecting range or a large piece of iron (likely) trying to null it out but getting overpowered. Hope this helps. HH George

 

[GeorgeinSC]

The threshold will hold to the tone of the last target you passed the coil over. Lay some targets of various metals on the ground and pass the coil over each one and listen to what the threshold does.