Signal Vanishing

[davidm88]

I am wondering who else has experienced this. I am running the Nox 800 on the beach in either beach 1 or 2, sensitivity at 21, FE 0, recovery at 5, tracking ground balance on, 15" coil. I get a repeatable good target both ways so I dig out a scoop. When I run the coil over it again, it gives an iron sound only. I continue digging anyway and it usually is a non-ferrous, good target. Any thoughts as to why it gives an iron response? Sand conductivity?

 

[Joe Black]

Maybe because of the tracking being turned on?……I know that if it is being implemented, it has the tendency to make targets disappear if you swing over it repeatedly?……or maybe causing that effect?……I’m not certain if that’s why but, I don’t use tracking on the beach.

 

[BobOso]

I do not use tracking, period. I was nugget hunting with the not when it first came out, found a strong target, did the usual turn 90 deg swing again, then back to 1st position, target was gone. I marked the area, turned off auto tracking and hunted nearby, returned 30 min later to find a 5 gram nugget, tracking removed the target in an area full of basalt

 

[Adrian SS]

I have the 600 and TID accuracy is not good on this machine, especially on the weaker deep targets. blanking or an iron tone on these targets is common no matter what mode the detector is set to.
Other operators of the EQ range here in Australia have commented on the same problem. I do not know if any of the upgrades improve this or not.

 

[Ted S]

I rarely use the target ID..Most of the time it is to bright to see it outside. My ears go by the tone...I think there are a lot of targets missed out in the field because people rely on the target ID meter too much..

 

[u2robert]

I am wondering who else has experienced this. I am running the Nox 800 on the beach in either beach 1 or 2, sensitivity at 21, FE 0, recovery at 5, tracking ground balance on, 15" coil. I get a repeatable good target both ways so I dig out a scoop. When I run the coil over it again, it gives an iron sound only. I continue digging anyway and it usually is a non-ferrous, good target. Any thoughts as to why it gives an iron response? Sand conductivity?

Or the target just disappears?

 

[davidm88]

Or the target just disappears?

Doesn't disappear most of the time, just hear an iron signal. Makes me wonder if I'm missing targets that sound like iron only.

 

[IDXMonster]

I would have to believe you’d want a manual ground balance at the beach, that seems to be the conventional wisdom.

 

[fwcrawford]

I have only used mine at the beach one time so far, but I do not remember anything like that happening in wet or dry sand.
Personally I did not even ground balance it before starting to detect.

 

[dfmike]

I rarely use the target ID..Most of the time it is to bright to see it outside. My ears go by the tone...I think there are a lot of targets missed out in the field because people rely on the target ID meter too much..

I don't find visual target accuracy to be very good with the Nox as well. I listen for that 4th or 5th tone singing or chirping on the Nox and I know I have to stop and investigate even if it's choppy. Target ID has its use of course but it fluctuates more than I care for on the Nox.

 

[BigTony]

I am wondering who else has experienced this. I am running the Nox 800 on the beach in either beach 1 or 2, sensitivity at 21, FE 0, recovery at 5, tracking ground balance on, 15" coil. I get a repeatable good target both ways so I dig out a scoop. When I run the coil over it again, it gives an iron sound only. I continue digging anyway and it usually is a non-ferrous, good target. Any thoughts as to why it gives an iron response? Sand conductivity?

Could have been a rusted nail and you hit the end of it. When you turn 90 degrees does the signal change to a grunt, if so it’s iron.
Also try using your pinpointed on the sides of the hole, could be hiding from you after the detector de-tunes the signal out for too many passes.