Personally, I am not one to hunt in All Metal that often, simply based on the type of sites I
frequent which are usually very trashy.
I had a few old foundations in the woods that would allow me to test the 6Ts All Metal search
mode with its target ID capabilities, so, thanks to the cooler weather (and no critters out), I
hiked in to a pair of them.
Starting outside of the foundation itself, I switched to All Metal, pumped the coil to set the
ground balance, engaged the VCO audio via the TONE ID touchpad and started searching.
The red clay in the area again forced me to drop sensitivity, but that value eliminated virtually
all falsing or chatter. Signals were fairly plentiful with most being easily identified as being
iron based on the VDI indications they produced.
As with the yard I hunted earlier, as I approached the foundation I needed to slow down to
pick out non-ferrous signals from the nails and other pieces of iron. A smaller coil or a
Double-D would make the 6T excel in these areas.
A few hours at this site and another nearby turned up three flat buttons circa the late-1700s, a
brass thimble and a pair of musket balls. The Prism had detected these items at depths up to 8
and each had produced clear, easily discernible signals.
Luckily, I was able to get down to Charleston within the schedule constraints of the field test
to see how it handled the saltwater beaches in the area. Heavily layered with black sand, they
tend to give most VLF detectors fits in the wet sand / surf line area.
Picking Folly Beach, simply due to the limited time I had due to other commitments, I walked
down to the wet sand and got setup. Trying the standard discriminate mode first, the 6T did
false a good deal on each sweep. Pressing the BEACH touchpad and allowing the detector to
rebalance changed things considerably for the better.
A trick I have used when hunting ocean beaches with a VLF detector in the past is to not hunt
parallel to the water, since the moisture content and often black sand concentrations change
from one end of the sweep to the other. Walking down to the surf and then back up again
keeps conditions pretty consistent under the coil, allowing the detector to operate more stably
and the 6T was no exception.
To eliminate most of the falsing, I dropped the sensitivity down to 4 and lifted the coil off the
surface of the wet sand, which worked well even as the surf lapped against the bottom of the
coil.
On the north side of the pier signals were fairly plentiful and, over the three hours I had
available, I recovered 32 coins, one set of car keys, some aluminum tras,h which you really
cant ignore when looking for gold, and my first gold ring in the last few trips herea thin,
10KT ladies ring with a dolphin on it. Target ID had been accurate even on the deeper targets
(down to 8 or so), as had both depth indications.
Some people have posted on Internet forums that the audio ID accuracy dropped off on deeper
targets, but I did not see this except on targets at the edge of the 6Ts detection depth.
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