Manual

Comprehensive Operating Manual & Guide to Metal Detecting
Comprehensive Operating Manual & Guide to Metal Detecting
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F75
F75
Mechanicals
BATTERIES
The F75 requires four AA batteries.
These
non-rechargeable chemistries may be used: Alkaline, Nickel Oxy-Hydroxide
(Panasonic Oxyride or Duracel PowerPix), and lithium iron disulfide (Energizer L91).
Nickel metal hydride and nickel-cadmium
rechargeable chemistries may also be used.
Zinc-carbon and so-called “heavy duty” batteries may not work, especially in cold weather.
Do not use these batteries.
Expect 40 hours of service in the field with one set of alkaline batteries.
Rechargeable batteries will usually deliver over 25 hours of service without recharging, but
when they start running low, they die suddenly with little warning.
Always install batteries which are of the same type and the same state of charge. Otherwise
battery life will be determined by the weakest battery, because the good batteries cannot
deliver their power with a dead battery blocking the current.
All 4 batteries are installed with the
positive terminals facing upward.
The LCD screen shows battery condition on the right.
Detecting Activities
Coinshooting
Coinshooting is searching for coins, usually in places like parks, schoolyards, church
lawns, and people's yards. In most places where coins are likely to be found, there
is also a lot of aluminum trash like pull-tabs and bottle caps, as well as steel
bottle caps and often nails. Sometimes there is jewelry present. You will
usually search using discrimination to get rid of the iron and the
aluminum trash, even though this mode will cause you to miss some of
the jewelry.
Much coinshooting is done in lawn areas, where digging holes
would cause damage to the grass. We recommend use of an
accessory hand-held pinpointer in such cases. Recovering targets is
usually done by first accurately pinpointing the target, then carefully cutting
a slit in the turf with a knife, and tamping it firmly when you are finished. In
these situations, you cannot recover deep targets for fear of damaging the
turf, so you can cut down on nuisance signals by reducing the sensitivity.
When searching on private property, first get the permission of
the property owner. Most of the public places where one is
likely to do coinshooting are city, county, or school district
property. There is usually no ordinance prohibiting use of
a metal detector as long as you are not causing damage.
Sometimes such ordinances do exist. Administrators and
security personnel often have the legal authority to
prohibit any activity they do not like even if there is no
ordinance against it. If there is a metal detecting club in your
area, someone will usually know what areas can and cannot
be searched. If you are ever in doubt about hunting an
area, then ask before hunting.
Be prepared to always put your best foot forward
when using a metal detector in a public place.
Pick
up any trash you recover; put it in a pouch or pocketed
apron. This way you can explain that you are performing
a public service by helping keep the place free of trash,
especially pieces of metal or glass that could endanger a child at
play. Be proficient at recovering targets without causing
damage to the lawn. Explain that whenever you find jewelry
which has personal identification marks, such as a class
ring, you make an attempt to determine the owner and to
return it. When someone who questions what you are
doing understands that you are causing no damage and are
actually performing a public service, you will usually be
welcome.
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