New Nokta Detectors for Beach Hunters?

[tvr]

Years ago i wrote Whites and asked about creating such a machine and got a reply back to the effect of that it may not work because of coil configuration. I think it would because you can have two coils within a coil, with the outer band being pi, and the inner band for pi, or even the center being for smf like the old Whites bigfoot coil. A switch on the control box could be used to go from pi to smf.

I think the goal would be not to switch between the two, but to use the signal information obtained by both PI and induction balanced to better hit a target and provide some identification information. Issue may be in figuring out how to isolate transmit and receive between the two and collect the data needed in the normal sweeping of the coil and listening to the response. Would be interesting to hear more details from whomever replied to you. Wonder if Carl may have had any insight into the issues.

 

[kac_dt]

Wouldn't a hybrid machine that ran both PI and IB at the same time be only as good as the weakest link? On the beach the IB side would still react to salt and because the lack of discrimination on a PI side that would probably pose an issue with target id mapping.

IB machines still excel in discrimination. SMF machines have more information for more accurate id mapping BUT are more prone to EMI and tend to iron false in bad ground. We have all seen how machine ID's are compared between brands and often what we don't know is how each machine can handle EMI which will directly influence the accuracy and steadiness of a targets phase angle. Machines with better shielding always display more consistent id's.

 

[Sand Sifter]

Wouldn't a hybrid machine that ran both PI and IB at the same time be only as good as the weakest link? On the beach the IB side would still react to salt and because the lack of discrimination on a PI side that would probably pose an issue with target id mapping.

IB machines still excel in discrimination. SMF machines have more information for more accurate id mapping BUT are more prone to EMI and tend to iron false in bad ground. We have all seen how machine ID's are compared between brands and often what we don't know is how each machine can handle EMI which will directly influence the accuracy and steadiness of a targets phase angle. Machines with better shielding always display more consistent id's.

I was thinking the same thing, like if the PI side is deeper than the IB side, then the PI could hit on a deep target that's just a bit deeper than IB can detect, so it wouldn't be able to identify the target that it doesn't know is there.

Same thing when over black sand or under saltwater, where PI isn't affected by mineralization or not as much as an IB, so IB side may lose a couple/few inches of depth where the PI side is going deep, unaffected by the mineralization.