Teknetics G2+ Target ID Chart: Reading 0 to 99 at 19 kHz

Higher operating frequencies respond more strongly to small, low-conductivity targets and relatively less strongly to large, high-conductivity ones. At 19 kHz the G2+ is noticeably more alert to small gold, thin brass, lead and fine relics than a coin machine running at five or seven kilohertz would be.

The consequence on the scale is that the bottom half of it gets busy. Targets that a low-frequency park machine would barely notice produce clear, confident numbers here, which is a genuine advantage on a relic site and a genuine nuisance in a park full of foil. It also means the high end compresses slightly: large silver still reads near the top, but the separation between a copper cent and a silver dime is not as generous as it is on a lower frequency machine.

The manual specifies a two-digit 0 to 99 target ID, so the scale itself is conventional. What is unconventional is which targets produce a usable signal in the first place.

Bands on the 0 to 99 scale. At 19 kHz the low-conductivity targets in this list report more clearly than they would on a coin machine.

They solve two halves of the same problem. V-Break sets where the audio tone changes pitch, so you decide which part of the scale sounds low and which sounds high rather than accepting a factory split. Teknetics publishes it as a custom breakpoint control aimed at distinguishing high-value targets from iron nails.

FeTone handles volume rather than pitch. Teknetics publishes it as an adjustable iron audio feature that reduces the volume of iron targets while keeping non-ferrous responses at full volume. Set together, you get iron that is both low-pitched and quiet, and everything else loud and clear, without deleting anything from the signal.

That combination is why this machine gets recommended for sites where iron outnumbers everything else by a hundred to one. You are not filtering iron out, you are pushing it into the background where it still tells you the ground is worth working slowly. An eleven inch DD open elliptical coil helps here too, because the open frame is lighter and the DD field separates close targets better than a concentric coil of the same span. If your sites are dense enough that even that struggles, the coil size selector is the honest place to check.

These machines share a great deal of engineering, so the differences are about job rather than about quality.

Two things. First, whether your ground is actually iron-heavy, because if it is not, you are paying for controls you will leave at their defaults. Second, whether you are willing to hunt with headphones, because FeTone and V-Break both work through subtleties of volume and pitch that a speaker in the wind simply loses. A wired pair such as the Garrett MS-2 Headphones costs very little and makes the whole control set usable.

The other practical point is weight. Teknetics publishes just over two pounds for the G2+, and on a six hour relic hunt that is a genuine difference rather than a marketing line. Machines get heavier every hour, and the ones people actually keep using are the light ones.

For the closely related gold machine, see the Gold Bug Pro settings chart. For the relic machine a tier above, the F75 chart covers the mineralisation readout the G2+ lacks. The Quest Q40 chart is the other small-brand option at similar money, and the budget ID comparison puts the published scales side by side. Full kit lists sit under intermediate setups.