To add the Salt Track feature to any program:
1. Press Options and use the up & down arrows to select Salt Track.
2. Use the + & - buttons to select either 1 for salt ground balance range or
0 for normal ground balance range.
Often soft sand will gather more saltwater compared to the surrounding sand.
Because these spots have a sharp increase in conductivity, the MX 7 will likely
beep regardless of whether metal is present. If a reasonable beep is produced
that doesn’t pinpoint sharply like a typical metal object (pinpoints as a large
area with a lower than normal volume beep), it is likely a salt pocket; ignore
and continue searching.
Additionally, when searching at the wave line, one may hear the incoming and
outgoing waves respond to some degree. It is best to search fully in the water
or fully on the beach. In most cases natural sluicing (wave action gathering
all heavy metals in one streak or patch) occurs either in the water or on the
beach. In other words, natural sluicing often leaves targets behind the waves
(on the beach), or takes it out into the water. With a tide guide and patience,
you can search 100% of the beach.
You may want to turn Salt OFF (0 in the Beach mode) when searching fresh
water beaches (no salt). The extended ground balance range provided by the
salt feature is not recommended when searching areas that do not have wet
salt (conductive ground conditions). Only when conductive ground conditions
are present will the salt feature improve performance.
Sensitivity and Saltwater
Metal detectors detect metals based on their conductivity. Like metals, salt
(when wet) conducts electricity. These conductive wet salt sands/grounds
are challenging for single frequency VLF metal detectors like the MX7.
When
searching wet salt grounds, it is necessary to lower the Sensitivity settings
compared to other areas.
For optimal results in wet salt, White’s recom-
mends a pulse induction type metal detector like the Surf PI or TDI SL, or a
multi-frequency VLF type metal detector like VX 3 or V3i.
ALL METAL PROGRAM-ONLY FEATURES
SAT (Self-Adjusting Threshold)
SAT only influences the All Metal, Relic, and Prospecting programs and only
appears in Options when one of these programs is activated.
When searching in an All Metal program, searching with a threshold hum is
mandatory for maximum detection depth. In an All Metal mode (without SAT)
the threshold hum will fade or increase with time as well as any slight change
in the ground.
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