Fisher Research Labs F11 User manual
OWNER’S MANUAL
Uses one 9-volt ALKALINE battery only.
Do not use “Heavy Duty” batteries.
Do not use ordinary Zinc Carbon
batteries.
TABLE OF CONTENTS
Congratulations!
Congratulations on the purchase of your new Fisher F11™ Metal Detector. The F11 is the result of many
years of software engineering and features the latest advancements in lightweight design and target
accuracy. The F11 can be used with its default turn-on-and-go settings, or you can adjust the detector's
settings to match your hunting conditions. This detector was designed to be an easy to use yet powerful
detector. This manual has been written to help you get optimal use of your detector so we hope you will
read it thoroughly before your first outing.
Happy Hunting rom Fisher Research Labs!
The F11 operates at a fre uency of 7.69 kHz and comes with a 7” round elliptical
searchcoil. The F11 shares searchcoil compatibility with the F22 and F44.
Terminology...................................................3
Contents of Box ...............................................4
Assembly................................................... 5-6
Batteries (use alkaline batteries) ..................................7
Quick-Start Demonstration .......................................8
The Basics of Metal Detecting
Ground Minerals.............................................9
Trash .....................................................9
dentifying Buried Objects .....................................9
Depth of Buried Objects...................................... 10
EM (Electromagnetic nterference) ............................. 10
Using the Detector ............................................ 10
Waterproof Searchcoil........................................ 10
How to Work the Controls....................................... 11
The Display
Depth ndicator............................................. 12
Overload Warning........................................... 12
Target dentification
Target- D.................................................. 12
4-Tone Target dentification Bar ............................. 12-13
Depth and Target Display
Reading the Display......................................... 13
Target Group Category D .................................... 14
Controls
Volume ................................................... 14
Sensitivity ................................................ 14
Notch .................................................... 15
Pinpoint .................................................. 15
Pinpointing................................................ 15-16
Headphone Jack.............................................. 16
Characteristics & Limitations .................................... 17
Troubleshooting .............................................. 18
Treasure Hunter's Code of Ethics................................. 19
Warranty .................................................... 19
Accessories........................................... Back Page
2
TERMINOLOGY
The following terms are used throughout the manual and are standard
terminology among detectorists.
RELIC
A relic is an object of interest by reason of its age or its association with
the past. Many relics are made of iron, but can also be made of bronze
or precious metals.
IRON
ron is a common, low-grade metal that is an undesirable target in certain
metal detecting applications. Examples of undesirable iron objects are
old cans, pipes, bolts and nails. Sometimes the desired target is made
of iron. Property markers, for instance, contain iron. Valuable relics can
also be composed of iron; cannon balls, old armaments and parts of old
structures and vehicles can also be composed of iron.
FERROUS
Metals which are made of, or contain iron.
ELIMINATION
Reference to a metal being "eliminated" means the detector will not emit
a tone, nor display a Target- D, when a metal object passes through the
searchcoil's detection field.
DISCRIMINATION
When the detector emits different tones for different types of metals, and
when the detector "eliminates" certain metals, we refer to this as the
detector "discriminating" among different types of metals.
Discrimination is an important feature of professional metal detectors.
Discrimination allows the user to ignore trash and otherwise undesirable
objects.
PINPOINTING
Pinpointing is the process of finding the exact location of a buried object.
Long-buried metals can appear exactly like the surrounding soil and can
therefore be very hard to isolate from the soil.
GROUND CANCELATION
Ground Cancelation is the ability of the detector to ignore, or "see
through," the earth's naturally occurring minerals, and only sound a tone
when a metal object is detected. This detector incorporates proprietary
circuitry to eliminate false signals from many mineralized soils.
3
CONTENTS OF BOX
The followin detector components are in the box:
Velcro
Handgrip
Velcro
4
3.Searchcoil
4.Middle
Stem
5. Lower Stem
with Bolt &
Knurled Knob
Attached
6.S-Rod
2.Armrest Assembly with
Screw and Lock-Nut
1.Control Housing
with 2 screws
Headphone
Jack Cover
ASSEMBLY
ool Required: #1 Phillips Screwdriver
●
1• Remove the Screw from the Armrest.
• Slide the Armrest over the end
of the S-Rod.
• Attach with Screw and Lock-Nut.
●
2Attach Control Housing with Screws;
install back screw first.
NO E:
•The Handgrip fits under the
Control Housing.
Handgrip may partially cover one
mounting hole. Peel back
Handgrip to expose the front
hole.
•Ensure the headphone jack
cover is properly seated before
attaching the control housing.
Handgrip
Search
Coil
Cable
Cable
Plug
S-Rod
Middle
Stem
Locking
Collar
Locking
Collar
Headphone
Jack
Battery
Compartment
(back side)
Armrest
Round
Elliptical
Searchcoil
*
Knurled
Knob
Coil
Washer
Coil
Washer
VelcroStrap
VelcroStrap
Place Headphone
Jack Cover in
recessed pocket
so it is level with
the surface of the
housing and held
in place between
the housing
and S-Rod.
Caution:
Forcing in M DDLE STEM with CAM LOCK raised may
form a burr on cam lock. f this happens, remove burr with
knife to allow insertion.
*Note: Very tall users can purchase the optional
Extended Lower Stem (TUBE5X), for extended reach.
5
6
●
3Position S-Rod upright.
●
4Rotate the LOCK NG COLLAR fully in the counterclockwise direction.
●
5nsert your finger inside the tube and make sure the NTERNAL CAM LOCK
is flush with the inside of the tube.
●
6
nsert the M DDLE STEM into the S-ROD, with the S LVER BUTTON pointed
upward.
●
7Rotate the M DDLE STEM until the S LVER BUTTON locates in the hole.
●
8Twist the LOCK NG COLLAR fully in the clockwise direction until it locks.
●
9Repeat this process on the LOWER STEM.
●
10 Using the BOLT and KNURLED KNOB, attach the SEARCHCO L to the
LOWER STEM.
●
11
Adjust the LOWER STEM to a length that lets you maintain a comfortable upright
posture with your arm relaxed at your side, and the SEARCHCO Lparallel to the
ground in front of you.
●
12
Wind the CABLE securely around the STEMS, leaving slack at the bottom.
●
13
Connect CABLE PLUG to housing.
Do not twist the Cable or Plug. Turn Locking Ring only. Use minimal finger
pressure to start the threads. Do not cross-thread. When the Locking Ring is
fully engaged over the threaded connector, give it a firm turn to make sure it is
very tight. When the Locking Ring is fully engaged over the threaded connector,
it may not cover all of the threads.
ASSEMBLY
(Continued)
S-ROD
LOCKING
COLLAR
INTERNAL
CAM LOCK
SILVE R BUTTON
MIDDLE
STEM
S-ROD MIDDLE STEM
●
4
●
5
●
6
●
6
●
7
7
The detector requires a single 9-volt
ALKAL NE battery (included).
Do not use ordinary “Zinc
Carbon” batteries.
Do not use “Heavy Duty”
batteries.
Rechargeable batteries can
also be used. f you use
rechargeable, we recommend
using a “Nickel Metal Hydride”
rechargeable battery. The battery
compartment is located on the back
side of the Control Housing. Slide the battery door to the side to remove. nsert
battery (see illustration). Close battery door. When it is time to replace the
battery, simply pull up firmly on the end of the battery.
BATTERY LIFE
Expect 20 to 25 hours of life from a 9-volt alkaline battery. Rechargeable
batteries provide about 8 hours of usage per charge.
BATTERY INDICATOR
The battery icon has three segments plus an outline segment.
The amount of battery voltage for anALKAL NE battery is indicated as follows:
All segments illuminated: 8.0 volts or more
Two segments illuminated, one grey: 7.5 to 7.9 volts
Two segments illuminated: 7.0 to 7.4 volts
One segment illuminated, one grey: 6.5 to 6.9 volts
One segment illuminated: 6.0 to 6.4 volts
One segment grey: 5.5 to 5.9 volts
No segments, flashing outline:less than < 5.5 volts
t is recommended to change the batteries when you see one grey segment.
f using NiMH rechargeable batteries, the display will remain stuck on the
second or third bar for most of the battery life; when it drops to the first bar, the
batteries will go dead within minutes.
SPEAKER VOLUME AND BATTERY CHARGE
You may notice the speaker volume drop while one battery segment is illuminated.
With the outline flashing, low speaker volume will be very apparent.
BATTERY DISPOSAL & RECYCLING
Alkaline batteries may be disposed of in a normal waste receptacle or
recycled. Non-Alkaline batteries should be recycled. n the state of California
all battery types must be recycled. Please refer to local municipalities for
detailed disposal and recycling requirements.
BATTERIES
8
QUICK-START DEMONSTRATION
I. Supplies Needed
•
Nail (made of iron)
•
U.S. Quarter (or silver coin)
•
U.S. Nickel
•
Gold Ring
•
U.S. Dime
•
U.S. Penny, dated after 1982 (post-1982 pennies are made of Zinc)
(Most newer non-U.S. coinage also contains mostly Zinc)
II. Position the Detector
a. Place the detector on a table with the searchcoil hanging over the edge. (or,
have a friend hold the detector with the searchcoil off the ground).
b. Keep the searchcoil away from walls, floors and metal objects.
c. Remove watches, rings and jewelry.
d. Turn off lights or appliances whose electromagnetic
emissions may cause interference.
e. Pivot the searchcoil back.
f. Press to power on.
g. Press twice to enter Artifact Mode,
notice all target groups illuminated.
III. Demonstrate MODES:
a. Pass all objects over the searchcoil and notice the different tones.
Nail: low tone
Nickel: medium tone
Zinc Penny: medium tone
Gold Ring: most gold rings will register with a medium tone
Dime: high tone
Quarter: high tone
b. Wave objects close, notice depth indicator. Wave objects farther away
and notice depth indicator.
c. Press once to enter Jewelry Mode. Notice Fe graphic is no longer
illuminated.
d. Wave nail over searchcoil. t will not be detected because it has been
“discriminated out.”
IV. Demonstrate NO CH Feature:
a. Press until “NOTCH” is illuminated.
b. Press until con “3” is flashing, then wait until icon stops flashing
(approximately 5 seconds). The icon will be blanked out.
c. Pass nickel over the searchcoil. t will not be detected. The nickel has been
“notched” out.
d. Press until con “3” is flashing, then wait until icon stops flashing
(approximately 5 seconds). The icon is now illuminated.
e. The nickel target group is now “notched” back in.
V.
Demonstrate DEP H Indicator:
a. Pass the Nickel close to the searchcoil (about 1” away).
b. Notice the depth bar graph indicating a shallow target.
c. Wave the Nickel farther away from the searchcoil and notice additional
bar graph segments illuminating, indicating a deeper target.
VI.
Demonstrate PINPOIN feature:
a.
Press and hold .
b. Hold a coin motionless over the searchcoil.
c. Lower coin toward searchcoil and then raise coin away from searchcoil.
d. Notice the sound changes as the coin distance varies.
e. Notice the depth indicator changes as the coin moves up and down.
9
THE BASICS OF METAL DETECTING
This metal detector is intended for locating buried metal objects. When
searching for metals, underground or on the surface, you have the following
challenges and objectives:
1. gnoring signals caused by ground minerals.
2. gnoring signals caused by metal objects that you do not want to find,
like nails.
3. dentifying a buried metal object before you dig it up.
4. Estimating the size and depth of objects, to facilitate digging them up.
5. Eliminating the effects of electromagnetic interference from other
electronic devices.
Your metal detector is designed with these things in mind:
1. Ground Minerals
All soils contain minerals. Signals from ground minerals can interfere with
the signals from metal objects you want to find. All soils differ, and can
differ greatly in the type and amount of ground minerals present. This
detector has proprietary circuitry to automatically eliminate interfering
signals from minerals that occur naturally in the ground.
NOTE: This detector will not completely eliminate inter erence rom all
types o minerals. For example, the detector IS NOT designed or use on
wet sand saltwater beaches. Another example o soil this detector will not
eliminate is any soil containing large concentrations o iron oxides, which
are usually red in color.
2. Trash
f searching for coins, you want to ignore items such as aluminum foil and
nails. You can see the Target- D of the buried objects, listen to the sounds
and then decide what you want to dig up. Or, you can eliminate unwanted
metals from detection by using the NOTCH feature.
3. Identifyin Buried Objects
Metal objects are identified along the 9-segment Conductivity graphic
symbols. This scale is an indicator of the relative electrical conductivity of
different objects. Segments to the right indicate more conductive targets. ron
objects, which are usually of lesser value, illuminate on the left with the Fe
symbol. Silver objects will be illuminated on the rightmost segments.
4. Depth of Buried Objects
The 6-segment graphic indicates the relative depth of a buried metal object.
For a given object, the more distance between it and the searchcoil, the
more segment lines illuminated.
10
5. EMI (Electroma netic Interference)
The searchcoil produces a magnetic field and then detects changes in that
magnetic field caused by the presence of metal objects. This magnetic field
the detector creates is also susceptible to the electromagnetic energy
produced by other electronic devices. Electric fences, cell phones, cell phone
towers, power lines, microwave ovens, lighting fixtures, TVs, computers,
motors, etc… all produce EM which can interfere with the detector and cause
it to beep when no metal is present, and sometimes to beep erratically.
The SENS T V TY control lets you reduce the strength of this magnetic field
and therefore lessen its susceptibility to EM . You may want to operate at
maximum strength, but the presence of EM may make this impossible. f
you experience erratic behavior or “false” signals, reduce the sensitivity.
THE BASICS OF METAL DETECTING
Sweep Method
Sweep the detector side-to-side over
the ground.
Keep the searchcoil parallel to the
ground as you sweep; do not lift the
searchcoil at the ends of your sweeps.
Searchcoil motion is required for target
detection.
USING THE DETECTOR
This detector is equipped with a 7” diameter round elliptical waterproof
searchcoil. This lightweight, ruggedly constructed searchcoil can be fully
submerged in water. The bottom portion of the pole assembly can also be
submerged, but the control housing and the searchcoil cable plug
connection into the housing must be kept dry.
Accessory searchcoils are also available for purchase; see back cover or
visit www.fisherlab.com. A smaller searchcoil offers more precision and fits
into tight spaces. Larger searchcoils provide for more ground coverage on
each sweep and penetrate deeper into the ground.
WATERPROOF SEARCHCOIL
RIGHT
WRONG
OPERATION an CONTROLS
Press MODE
repeatedly to
cycle through
search modes
JEWELRY, COIN
or ARTIFACT.
POWER
ON/OFF
Press MENU
to cycle through
menu items:
VOLUME,
SENSITIVITY or
NOTCH.
Press
or
to INCREASE
or DECREASE
menu settings.
Press and
hold PP
to enter
Pinpoint.
POWERING UP
At power-up the Menu default is Volume and the Mode default is Jewelry.
11
12
THE DISPLAY
DEPTH INDICATOR
Coin-sized objects will be detected up to
8” deep.
The 6-segment graphic indicator is
calibrated to coin-sized objects.
Objects other than coins will still register
on the 6-segment depth scale, but the
depth indication will be relative. For
example, all 6 segments illuminated
could indicate a coin buried 8” deep, but
could also be a very large object several
feet deep. Use the Depth ndicator in
conjunction with the Target Category
cons to gain more information.
OVERLOAD WARNING
f a metal object or highly magnetic soil are too close to the searchcoil, the
detector will overload and begin emitting a rapid, repeating mid-tone warning
sound. Overload will not harm the detector, but the detector will not function
under these conditions. f overload occurs, raise the searchcoil to detect the
target from a greater distance, or move to a different location.
Target
Depth
Indicator Battery Level
Indicator
Target Category
ID Numbers
Iron
Menu
Category
Icons
Mode
Indicator
Target Category Icons
Icons will turn from outlined to solid indicating a
detected target. A “blank” position indicates a
Notched-out target category.
TARGET IDENTIFICATION
Tar et-ID
This is a motion detector. The searchcoil must be in motion to detect metal. A
motionless searchcoil over a metal object will not detect metal. When objects are
detected, the detector will emit a sound. A Target Category con will illuminate
indicating the Target- D of the last object detected. This detector has fast target
response and is able to detect different objects in very close proximity. Therefore,
the Target- D displayed may change rapidly as you sweep the searchcoil.
The Category con will remain illuminated for 3 seconds and then disappear.
Note: There are a wide variety of metals and no target can be identified for certain
until unearthed. See table on page 13 for a Target- D Category coin reference.
4-Tone Tar et Identification
The detector will provide 1 of 4
sounds for any metal object
detected: bass, low, medium or
high tone. This audio feedback
system is useful in conjunction
with the visual Category con
system described above.
Gold
Range
Silver
Range
Iron
Range
Target Conductivity Bar
13
TARGET IDENTIFICATION
(Continued)
Iro
n Gold Silver
Fe 2 3 4 5 6 7 8 9
Iron Foil Nickel Alum Zn Dime Qtr Half Dollar
Jewelry Bass Med Med Med Med High High High High
Coin Bass Bass Med Bass Low High High High High
Artifact Bass Med Med Med Med High High High High
The Target Category cons are outlined in three groups: ron, Gold and Silver.
DEPTH AND TARGET DISPLAY
READING THE DISPLAY
The display shows the PROBABLE
identification of the metal detected, as
well its PROBABLE depth.
Each time an object is detected, the
Depth Bar segments illuminates in
addition to the Target- D con.
The Bar Graph is a graphic
representation of the distance from
the searchcoil to a coin-sized object.
• More bars indicate a deeper object.
• Fewer bars indicate a shallower
object.
TARGET GROUP CATEGORY ID
-
ron Objects, Gold Flakes
-
Foil, Small Gold tems
-
US Nickels, Gold, Pull Tabs
-
Brass, Aluminum Screw Caps, Lead,
2 Euro Coin, Pull Tabs
-US Zinc Cents, 1 Euro Coin
-Copper Coins, Small Silver Coins (US Dime)
-
Medium Silver Coins (US Quarter)
-
Large Silver Coins (US Half Dollar)
-
Very Large Silver Coins (US Silver Dollar)
The effective electrical conductivity of an object depends on its metallic
composition, size, shape and orientation relative to the searchcoil. Since coins
are minted to tightly controlled specifications, they can be accurately identified.
dentification of pull-tabs and foil is less consistent because these kinds of
targets come in wide variety. n general, smaller objects, and objects made from
lower conductivity alloys such as iron, bronze, brass, lead, pewter and zinc will
read lower on the conductivity scale. Larger objects and objects made from
higher conductivity alloys such as silver, copper and aluminum, will tend to read
higher. The notable exceptions are gold, which usually reads low because it is
rarely found in large pieces, and zinc pennies, which read moderately high
because of their size and shape.Although nails and other iron and steel objects
will usually give low readings, ring-shaped pieces of iron (for instance steel
washers and harness rings) will usually produce medium to high readings. Flat
pieces of iron or steel, such as can lids, will occasionally do the same.
Caution: Many other types of metal items can fall under any one of these categories.
t is impossible to accurately classify ALL buried objects.
See Target ID Coin Reference Chart (Pg 14).
CONTROLS
VOLUME
Adjust the volume from 0 to 6. At
startup the default level is 4. Press
the Menu button until “Volume” is
illuminated, then use the “+” and “
-
”
buttons to adjust up or down.
Minimum volume is 0 bars
Maximum volume is 6 bars
SENS (Sensitivity)
Adjust the sensitivity from 1 to 6. At
startup the default level is 5.
Minimum sensitivity is 1 bar
Maximum sensitivity is 6 bars
f the detector beeps erratically or
beeps when there are no metal
objects being detected, reduce the
sensitivity.
Press the Menu button until SENS is
displayed, then use the “+” and “
-
“
buttons to adjust up or down.
WARNING: Reduce the sensitivity if
the detector behaves erratically.
In today's wireless & technological
environment there is a never-ending
variety o devices emitting EMI
(Electromagnetic Inter erence) that
can inter ere with this detector.
NOTCH
The Notch control allows you to
accept or reject different types of
metals for each target category group.
All categories are eligible for NOTCH.
Each mode (Jewelry, Coin and Artifact)
has a default set of notches.
Press the Menu button until Notch is
illuminated. With each press of the
“+” or “
-
”, the blinking Target
Category icon moves across the
display screen. Position the blinking
icon on the category you wish to
Notch and wait 5 seconds or press
the button for immediate notch
selection.
Lowest sensitivity
detects coins to
approximately 2”
Highest sensitivity
detects coins to
approximately 8”
14
DEPTH AND TARGET DISPLAY
(Continued)
Merovingian Triens (gold, France) 2
Celtic Potin (copper+lead) 2
Russian Scale Peter I, 1705, Silver, 0.25 gr. 3
US Nickel 3
Roman Nummus (bronze) 4
2 Euro Coin 4
British 20p 4
USSR, 5 kopeek, 1961, Bronze, D 25 mm. 4
Bulgarian 1 lev 4
1 Euro Coin 4-5
Medieval double sol coin (France) 5
British £1 5-6
US Dime 6
Polish Zloty (Pre-WWII) 2zl (1933 silver) 7
US Quarter 7
US Silver Dollar 9
Russian, 1 ruble Nikolay II,1896, Silver, D 34 mm. 9
Target-ID Coin Reference Below are known Target-IDs for some reference coins:
The scale for coin-sized objects, with sensitivity at maximum, is:
DISPLAY
DEPTH
Target Depth
approx. 2” or less
Target Depth
approx. 2-3”
Target Depth
approx. 3-4”
Target Depth
approx. 4-5”
Target Depth
approx. 5-6”
Target Depth
approx. more than 6”
PINPOINTING
(using a motion etecting mo e)
Pinpointing targets after detection
“X-ing” the target
1. Sweep over target in
narrowing side-to-side
patterns.
2. Take note of the spot on
the ground where the
“beep” occurs.
3. Now sweep over the
target in a forward-to-back
motion and note where
the “beep” occurs.
4. This pinpoints the target
location with “X”. When pinp ointi ng a targ et, try drawi ng an “X”, as
ill ust rate d, over where the tone is induced.
CONTROLS
(Continued)
15
That category will reverse status. f the
icon had previously been illuminated it
will now disappear, indicating the
category has been eliminated from
detection. Likewise, an icon that is not
visible on the display will re-illuminate,
indicating that this category is now
notched-in and will be detected.
Only one category can be notched at
a time. To notch multiple categories
in or out, repeat the process for each
category icon.
PINPOINT
Press and hold the button to
activate. Pinpoint is only active while
the button is depressed. The 2-digit
indicator displays the target depth in
inches and updates immediately as
the coil moves back and forth over the
target. The depth indication in
conjuction with the variable pitch and
volume help pinpoint the exact center
of a target.
Pinpoint is used to find the exact
location of a target which was
previously located and identified using
the Jewelry, Coin or Artifact mode.
Pinpoint does not require motion of the
searchcoil over the target; the user can
move the searchcoil more slowly and
narrow the detection field.
NARROW IT DOWN
To further narrow the field of detection,
position the searchcoil near the center
of the response pattern (but not at the
exact center), release, and then
quickly press-and-hold it again. Now
you will only hear a response when
the searchcoil is right over the top of
the target. Repeat this procedure to
narrow the zone even further. Each
time you repeat the procedure, the
field of detection will narrow further.
HEADPHONE JACK
This detector has a 1/4” headphone jack. t
works with any stereo headphone (not
included) that has a 1/4” plug. When the
headphone jack is connected, speaker
volume is disabled. Using headphones
extends battery life and prevents the
sounds from bothering bystanders.
Headphone use also facilitates detection
of the weakest signals.
For safety reasons, do not use
headphones near traffic or where other
dangers are present. This device is not to
be used with interconnecting or headphone
cables longer than three meters.
The headphone jack has a rubber plug that
will help keep foreign material from entering
the control box.
16
CIRCLING THE TARGET
Crossing the target zone with multiple intersecting sweeps at multiple angles is another
way to verify the repeatability of the signal and the potential of the buried target. To use
this method, walk around the target area in a circle, sweeping the searchcoil across the
target repeatedly every 30 to 40 degrees of the circle, about ten different angles as you
walk completely around the target. f a high-tone target completely disappears from
detection at a given angle, chances are you are detecting oxidized ferrous metals, rather
than a silver or copper object. f the tone changes at different angles, you may have
encounteredmultipleobjects. fyouarenewtothehobby,youmaywanttodigalltargets
at first. With practice in the field, you will learn to better discern the nature of buried
objects by the nature of the detector’s response.
WHAT
READS
L KE TH S
…MAY
ACTUALLY
BE TH S
PINPOINTING
(Continued)
1. This detector comes with a waterproof searchcoil. The searchcoil can be
completely submerged into water. The control housing is not waterproof
and cannot be submerged in water. To use the detector in inclement
weather, consider purchasing the optional Rain Cover (COV-F11).
2. BUR ED UT L TY L NES. This hobby metal detector is not designed to
locate buried pipes or cables. Fisher Research Labs manufactures a
complete line of pipe and cable locators for this application. These are
sophisticated instruments with functionality different from your hobby metal
detector.
3. SEVERE SO L COND T ONS. While this detector has proprietary circuitry
to cancel out minerals naturally occurring in most soil types, it cannot
penetrate the most severe soils and it is not intended for use on wet sand
saltwater beaches. However, it is well-suited for detecting on dry sand.
Saltwater is highly conductive and requires a more sophisticated type of
detector. Fisher Research Labs offers such types of detectors. Other
highly mineralized soils, such as those found in some gold prospecting
sites, may also limit this detector's capability. f the detector tends to
overload it could indicate you are in an area containing such severe soils.
4. TARGET- D. The detector's Target- D system calculates and displays the
most probably identification. Target- D is affected by soil conditions, the
searchcoil's distance from the target, the length of time the target has been
buried and the target's proximity to other dissimilar targets. Very large
metal objects can overload the detector and may be classified
inaccurately.
5. REDUCE SENS T V TY. The primary purpose of the Sensitivity control is
to allow the operator to reduce the sensitivity of the detector. All
detectorists desire to find objects at maximum depth. However, in today's
environment there is a never-ending variety of devices emitting EM
(Electromagnetic nterference) that can interfere with this detector.
There will be environments where the detector cannot operate at
maximum sensitivity. This is not a defect. f you find yourself in such an
environment, reduce the sensitivity of the detector. Some environments
may have so much EM it is impossible to detect there. Both overhead
power lines and buried power lines can interfere with this detector. Power
line capacity may be quite different during certain times of the day. For
instance, peak hours of electrical use that can occur around 6 p.m. can
lead to a lot of EM . f you experience power line interference, try returning
to a given area at a different time of day.
CHARACTERISTICS & LIMITATIONS
17
TROUBLESHOOTING GUIDE
SYMP OM CAUSE SOLU ION
Detector chatters, • Using detector • Use detector
beeps erratically indoors outdoors only
or has low • Using detector near • Move away
sensitivity power lines
from power lines
• Using 2 detectors • Keep 2 detectors
in close at least 6 meters
proximity (20’) apart
• Environmental • Reduce sensitivity
electromagnetic until erratic
interference signals cease
Low speaker •
Discharged battery
• Replace battery
volume
• Wrong type of • Use only 9Volt
battery alkaline battery
Display does not lock
• Multiple targets •
Sweep searchcoil at
on to one Target- D present different angles
or detector emits • Highly mineralized • Move to a
multiple tones soil different location
• Sensitivity set
• Reduce sensitivity
too high
No power, no sounds
• Dead battery • Replace battery
• Cable not •
Check connections
connected securely
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. f this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- ncrease the separation between the equipment and receiver.
- Consult the dealer or an experienced radio/TV technician for help.
CE The manufacturer declares that the minimum ESD performance criteria is 1) the unit shall not
be permanently damaged and 2) operator intervention is allowed.
This product is RoHS compliant.
This product meets the requirements of ndustry Canada: CAN CES-3 B/NMB-3 B.
18
5-YEAR LIMITED WARRANTY
Register your warranty on-line for a chance to win a
FREE DETECTOR
For details, visit www.fisherlab.com
The F11 metal detector is warranted against defects in materials and workmanship
under normal use for five years from the date of purchase to the original owner.
Damage due to neglect, accidental damage or misuse of this product is not
covered under this warranty. Decisions regarding abuse or misuse of the F11
metal detector are made solely at the discretion of the manufacturer.
Proof of Purchase is required to make a claim under this warranty.
Liability under this Warranty is limited to replacing or repairing, at our option, the
metal detector returned, shipping cost prepaid, to Fisher Research Labs. Shipping
cost to Fisher Research Labs is the responsibility of the consumer.
To return your detector for service, please first contact Fisher Research Labs for a
Return Authorization (RA) Number. Reference the RA number on your package
and return the detector within 15 days of calling to:
Fisher Research Labs
1465 Henry Brennan Dr.
El Paso, TX 79936
Phone: 915-225-0333 ext. 118
NO ICE O CUS OMERS OU SIDE HE U.S.A.
This warranty may vary in other countries; check with your distributor for details.
Warranty does not cover shipping costs to and from the U.S.A.
According to FCC part 15.21, changes or modifications made to this device not expressly approved by the party
responsible for compliance could void the user’s authority to operate this equipment.
This device complies with FCC Part 15 Subpart B Section 15.109 Class B.
Copyrigh © 2015
All righ s reserved, including he righ o reproduce his book, or par s hereof, in any form.
Fisher®is a regis ered rademark of Fisher Research Labs
www.fisherlab.com
Made in he USA from USA and impor ed par s.
TREASURE HUNTER’S CODE OF ETHICS:
• Always check Federal, State, Co nty and local laws before searching.
• Respect private property and do not enter private property witho t the owner’s permission.
• Take care to refill all holes and leave no damage.
• Remove and dispose of any and all trash and litter fo nd.
• Appreciate and protect o r inheritance of nat ral reso rces, wildlife and private property.
•
Act as an ambassador for all treas re h nters; se tho ghtf lness, consideration and co rtesy at all times.
• Never destroy historical or archaeological treas res.
• All treas re h nters may be j dged by the example yo set; always cond ct yo rself with
co rtesy and consideration of others.
19
MF11 052215
ACCESSORIES
FOR COMPLETE DETAILS VISIT WWW.FISHERLAB.COM • 1-800-685-5050
Fisher
®
Padded Carry Bag
Rugged double stitched construction. Includes handy
exterior pocket for extra batteries or small accessories.
– 103693000C
Fisher
®
Camo Pouch
Camo pouch with two inside pockets, belt included. –
PCH-F
Stereo Headphones
Use with Fisher
®
metal detectors. Lightweight and adjustable with
true stereo sound, adjustable volume, 1/4 jack with 1/8 adaptor,
4’ cable. – 9720950000
Metal Sand Scoop
Large galvanized metal scoop with filtering holes. Strong Rubberized grip.
– SAND SCOOP
Lesche Knife
Made from high quality heat-treated tempered steel. The ultimate digging tool.
Comes with a durable sheath. 12" in length with a 7" serrated blade.
– LESCHE KNIFE
Fisher
®
Baseball Cap
One size fits all. – FCAP
Fisher
®
T-Shirt
100% cotton with Fisher
®
Logo. Sizes: S, M, LG, XL & XXL – FTSHIRT
Replacement/Accessory Searchcoils
7” Round Elliptical Replacement Coil – 7COIL-RE-F
9” Triangulated Concentric Elliptical Accessory Coil – 9COIL-EE
11” Triangulated Concentric Elliptical Accessory Coil – 11COIL-EE
Coil Covers
Specially made to protect your searchcoil from abrasion and damage.
9” Triangulated Concentric Elliptical Coil Cover– 9COVER-EE
11” Triangulated Concentric Elliptical Coil Cover– 11COVER-EE
Rain Cover
Neoprene protective cover specially made to protect your F11 from weather–
COV-F11
Gold
Prospecting Kits
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