cscope cs8sst - Treasure Hunting Magazine

cscope cs8sst - Treasure Hunting Magazine
Field Test
C-Scope CS8SST
David Stuckey
was quite pleased when Treasure
Hunting asked me if I would like to
do a Field Test on the C-Scope
CS8SST. I had started out in the hobby
with a C-Scope metal detector way back
in the mid-1970s, and testing the
CS8SST would give me the ideal opportunity to see just how much C-Scope
technology had moved forward since
the days of the “swan-necked”
machines that I first cut my teeth on.
Another reason was that since my
old C-Scope finally gave up the ghost in
1987, I replaced it with another
machine that I have been using ever
since. Although that machine is pretty
basic, it has performed extremely well
over the past 13 years. The only down
side is that I seem to have unwittingly
joined the breed of “techno-phobes”
whose way of thinking is “If my present
detector works well, then why change
to something more sophisticated?”
However, when the CS8SST arrived
I soon found that it had some pretty
interesting features, which I began to
wish I had on my machine. I couldn’t
wait to get out and test it.
As one of C-Scope’s recent additions to their impressive range of detectors, the fully computerised CS8SST
seems to fill the gap between the more
I
Control Features
basic machines and their top range
Newforce R1.
The features to be found on the
CS8SST include the following:1. A computerised control system.
2. SST intelligent ground tracking.
3. Smart Scan panel array.
4. A high-speed target analyser.
5. Target pinpoint.
6. Depth reading.
7. Overdrive-Large target indicator.
8. Anti-dust & moisture features.
9. 8-inch diameter search head.
The CS8SST’s control panel consists of four control knobs, a pinpoint
button, and an LED Bar Graph. In order
the control knobs are: Power On/Sensitivity, Notch Select, Notch Width, and
then Discriminate. The pinpoint button
is set between the Notch Select and
Notch Width, this also activates the
CS8SST Smart Scan feature, which I’ll
go into later.
LED Bar Graph. This provides target analysis and also depth reading (in
inches). It also gives an indication that
the SST Smart Scan is working.
Power/Sensitivity. This switches
the machine on and sets the motion
mode sensitivity. As with most types of
machine this is set at maximum sensitivity when turned fully clockwise. It
also provides the best detecting depth
at this setting.
Discrimination. The Disc control
eliminates items in the following
sequence: iron, aluminium foil, new
l0ps, old l0ps, bottle caps, and £1 coins.
When turned fully counter-clockwise
the C-Scope CS8SST operates in its allmetal motion mode with zero discrimination.
Notch Select/Notch Width. Both
of these controls operate in conjunction
with the Discrimination control and
work together to notch-in or notch-out
Right: Control panel of the CS8SST.
Below: Field testing
selected targets. Neither of these will
operate if the discrimination control is
set fully anti-clockwise.
By setting the Notch Select to a
position just below that of the Disc
control selected targets can be
“notched-in”. By setting it so that it is
just above the Disc setting certain targets can be “notched-out”’. Simply by
setting Disc to reject foil the Notch
Select can then be set to reject pulltabs. By using the Notch Width a whole
band of targets from pull-tabs to bottle
caps can be rejected.
38
TREASURE HUNTING October 2000
SST Scan. The SST scan is a visual
indication that the detector’s ground
scan facility is in operation. To enable
this feature the pinpoint button should
be pressed in for about one second
when switching on the machine. The
LED Bar Graph will light up and then
illuminate consecutively across the
graph backwards and forwards. The
ground scan functions whether this
facility is enabled or not. The pinpoint
button should not be pressed for more
than the recommended time when the
power is switched on, or the machine
may not function properly.
Overdrive (Large Target Indication). Sweeping the coil over a large
target or a target that passes close to
the coil can send the machine into overdrive and produce erroneous results on
the bar graph. The detector will give a
distinct “motorboat” signal to indicate
when this happens. When it does, one
simply has to raise the search coil and
sweep the target once more to get a
more accurate reading. The “motorboat” signal does not occur when the
machine is in ID pinpoint mode.
Depth Reading. To obtain a depth
reading simply move the search coil
away from the target and, while holding the detector still, press the pinpoint
button continuously while you sweep
the target area again. A depth reading
will show on the upper scale of the bar
graph.
First Impressions
After assembling the CS8SST I was
quite impressed by its design and light
weight (approximately 1.7kg). It was
comfortable to hold and use. I was also
impressed by the headphone socket
(situated on the battery compartment
beneath the armrest). This has been fitted with a removable dust cover.
The CS8SST is powered by eight AA
batteries or a rechargeable 12-volt pack
(available from C-Scope). For the purpose of this test I used standard alkaline batteries.
To evaluate the detector before taking it out into the field, I first carried
out some “in-air” tests. The results are
given below:Iron horseshoe - 9in
Old pre-decimal 1d - 7in
New 1p - 5in
New 10p - 7in
Large silver ring - 5in
Medium sized crotal bell - 7in.
The test was carried out using maximum sensitivity and no discrimination. The results do seem to be comparable to many other types of machines
on the market.
One of my particular likes about the
Headphone and
recharge plug
sockets with
removable covers.
CS8SST is the different audio signal it
produces when indicating ferrous
metal. Although most other detectors
usually give some audio indication of
iron (such as a “spitting” signal) the
CS8SST gives a distinct “buzzing”
sound.
On Test
When Treasure Hunting asked me
to carry out this field test I did feel a bit
of panic because the harvest hadn’t yet
begun, and the fields where we search
were still full of crops. Where was I
going to test it? I decided to try something different. In the company of my
son Mathew, we took it to some woods
close to where I live. I had never tried
these woods before and a new housing
development nearby meant that they
would be pretty contaminated with
modern junk and other undesirable
items. But I did feel that this would be
a good chance to try out the discrimi-
nation and notch facilities.
The audio sounds seemed strange
compared to my own machine but I
soon got used to them. The illuminated
bar graph that gave a visual indication
of what the machine was locating
proved of great help, and was also
pretty accurate. When it indicated
“foil” I dug down and found exactly
that. As expected, I found an abundance of ancient shotgun caps, which
registered between (C) and (D) on the
bar graph. To start with I chose not to
use the notching facility so that I could
get used to the machine’s response to
different kinds of targets.
As we worked our way along the
main footpaths in the wood a whole
range of objects appeared. One very
strong signal proved to come from a
large coin. The LED bar graph indicated
the level (B). This item turned out to be
a coin, which at first I thought was an
old 2 shillings. It turned out to be a
CM
Finds from the wood:
Yugoslavian 10 dinars,
gold St Christopher,
19th century lead bullet,
and a livery button.
October 2000 TREASURE HUNTING
39
FIELD TEST
David Stuckey
CM
Two .50 calibre shells from a belt of ammunition.
Yugoslavian 10 dinars! Fortunately,
most of the targets were close to the
surface and did not require a great deal
of digging.
We dug at another signal, which
registered (C) on the bar graph, and
this appeared to be a piece of gold foil.
Picking the object up, my son found
that it was, in fact, a solid gold St.
Christopher medallion! Needless to
say, I was soon feeling pretty delighted
with this machine. It was bringing me
luck!
The amount of iron targets we
encountered in the wood was considerable and the machine responded almost
constantly with its distinct “buzzing”
audio signal. I decided to increase the
disc level in order to eliminate these
targets.
Pull tabs and foil still remained a
problem so I experimented with the
notch facility so that these could be
eliminated as well. Although it worked
well enough I was worried that it would
perform its function at the expense of
the loss of some sensitivity.
I therefore returned home to carry
out another in-air test to see just how
much loss of sensitivity was incurred, if
any. Using an old shilling and a piece of
aluminium foil I first measured the
detection ‘depth’ on the coin without
using any discrimination. I found that
the shilling was picked up at approximately 4.5 - 5in. I then increased the
discrimination setting until the foil was
rejected. Upon trying the shilling once
more I found that it still picked up at
around the same distance. Even when I
set up the notch facility the detection
40
TREASURE HUNTING October 2000
Mangled fragments of a B17’s stainless steel oxygen tank.
“depth” hadn’t been impaired to any
distinguishable level. This may be different in the field where soil conditions
can affect sensitivity, however.
During the summer weeks my team
mates and I had busied ourselves
searching for the scattered remains of
two B17 Flying Fortresses which had
collided in mid-air and plummeted into
woods and fields near where we live.
One of the planes crashed into a wood
where one of its bombs exploded causing even greater devastation. Fragments of the aircraft were strewn all
around the wood. It was a good opportunity to test the CS8SST in a search
for any bits that we may have missed
using our other machines.
Starting close to the enormous
bomb crater, which is now a large pond,
I slowly worked my way around the
undergrowth and over towards an area
of the wood which hadn’t suffered
badly from the catastrophe 56 years
earlier.
Much of the debris we found consisted of fragments of the fuselage
“skin”, which was made of aluminium.
The machine also gave an enormous
amount of ferrous “buzzing” signals,
which turned out to come from badly
corroded steel fragments from the
plane. Working my way along the far
side of the wood I suddenly heard what
I thought was a machine gun going off!
This was the detector’s “motorboat”
response to a large target. When I dug
this up I found that it was a large piece
of stainless steel. My find was actually
part of an oxygen tank from the B17.
Working my way back into the
clearing where the plane came down I
encountered one minor snag with the
CS8SST. Bright sunlight striking the
control panel made it rather difficult to
see what was happening on the LED
bar graph. In a similar way if sunlight
strays onto your TV screen, it can obliterate the picture. I found that I had to
change position to see the graph or put
my hand over it to shield it from the
sun.
Conclusion
I can honestly say that despite my
initial fears that the CS8SST might be
somewhat complicated, I actually found
it very easy to operate. Once the controls had been mastered, which didn’t
take long, I even found it fun to use.
The LED bar graph, as well as the various audio signals, certainly take away
some of the guesswork when you’ve
located a target. I wish I had these features on my current machine.
Although sunlight striking the control box caused a slight difficulty in
reading the bar graph, I didn’t find this
to be a major problem. C-Scope also
informed me that search heads aren’t
interchangeable with the CS8SST. You
are restricted to its 8in search coil.
For any detectorist who currently
uses a fairly basic metal detector and
perhaps wishes to upgrade his machine
to something rather more sophisticated
(but not too complicated) I would certainly recommend he consider the CScope CS8SST as a suitable option. As
a well-balanced and lightweight detector it can be used comfortably on most
TH
terrains and in most conditions.
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