Whites 4BDX LOOP Specifications

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TOI I PLEASANT VATLEY ROAD SWEET HOME,
OPERATO RS
INSTRUCTIONS
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oREGON 973s6
G.E.B.
All-Metal Detectors
(Standard Models)
Manutacturers of The World's Largest Line ol Mineral and Metal Detectors
MINERAL AND METAL
OETEtrTORS ELECTRtrNItr
MAEiNETOMETERsi SUPER GEIEiER AND
strI NTILLATItrN COUNTERS ULTRA V!trLET
LIGHTS

Proper Care of Your Detector
The lollowing are precautions you should.take to protect your instrument lrom harm, insure its long life, and attlid
nullifying the warrantY
Cleaning: The loop and rod or probe are waterproof. They can be cleaned with fresh water and a mild cteanser- Afrer
cleaningl however, dry the instrument thoroughly. Caution! The instrument case is not waterprool, and water-il allow-
ed to enter lt-may damage electronic components.
Weather Conditlonr: Prolect your detector lrom excessively cold weather. Freezing can damage the electrcriic
components, the case and/or the batteries. Excesslve heat can also damage the instrument. Never leave it in the sun-
It's best to lay it in the shade when temporarily not in use. lf it's lelt in a car on a hot day, cover it with a blankel or
something similar to protect it lrom the direct rays ol the sun, and then leave the windows slightly open to permit ven-
tilation. Needless to say, protect youl detector if you operate it in the raln, as water may get into the instrument case'
Sali Water: Salt water is very corrosive! lmmediately alter your detector has been exposed to salt water, rinse it
tnJi"rJnfy *itn'fresh water, being careful not to allow water to enter the instrument case. Then wipe it with a cloth
dampened wiih fresh water and dry it lhoroughly.
Slorage: 6 you plan to store your detector for any length of time, unsnap the batteryand remove it lrom the instrument'
WhenLver your detector is not in use, turn the VOLUME knob all the way to the"PWR OFF" position.
Service And lverranly tnlormation: lf your new metal detecior is ever in need of service, ship it to us at the factory
address below or to one of the Service Centers listed on the back ol the warranty statement. lnsure it fully, prepay the
charges, and enclose a letter describing the nature of the problem. As long as your detector is under warranty there is
no charge other than a small handling and postage fee.
Read your warranty card carefully. lt describes completely what is covered and the length ol the coverage. lf you have
any qiestions don't hesitate to write us. We will be happy to answer any questions you may have.
HELPFUL HINTS AND TIPS
1. ,,How deep will it go?" Detection depth is determined by five main factors.
a. The SIZE ol the object
b. The SIZE of the looP.
c. The LENGTH OF TIME the object has been buried.
d. The SKILL of the oPerator.
e. The ground MINERAL CONTENT.
The longer an object has been buried, the belter you will be able to detect it. A chemical reaction called a "halo
elfect" between such objects as silver or copper coins and the surrounding soil may cause your detector to
register a much larger inirease in volume than might otherwise be expected lor a smafi coin' ll the halo effect is
strong enough, your detector may contlnue to register even after you have dug up the coin.
2. ,,Wnai will my detector locate?" Sitver, lead, copper, bottle caps, tin loil, pull tabs, cartridge cases, rings' brass
and tin cans are just a lew of the conductive obiects that can be detected. Your detector will not locate sticks,
rags, bones, paper, wood or other non-metallic obiects.
3. Learn how to interpret the ditlerent types of responses from your detector. A hail lying flat in the ground will
sometimes produce a double or single reading depending upon whether your loop passed across it lengthwise or
across its width. So it's a good idea to sweep your finds from several diflerent directions to try to learn as much as
possible about the object you have located. Coins will usually only produce one reading regardless of sweep
direction.
4. Rather than waste time, check around the trees for junk items such as foil, pull tabs, bottle caps, etc. This will
frequently indicate whether or not someone has already been in the area with a detector.
5. Always "criss-cross" an area when hunting it.
6. After you have dug up a coin, always check the hole again lor more. As many as 10 coins have been found in one
hole!
T. When beachcombing the best place to look lor coins is near the concession stands.
g. Gheck the shallow rvater in swlmming areas. Most rings and coins are lost when people enter the water'
9. lf you make plans lor coinshooting, check the history records of the area.
10. Always carry a plastic bag for your detector in case you get caught in the rain.
11. Nevei ask permission to treasure hunt over the phone. People tend to visualize you using a pick and shold. mak-
ing large holes.
12. Join a local historical society or get acquainted with its members.
13. ln lawn areas, us6 a screwdrlver of no more than eight inches as your tool. Limit the size ol the hole to a
MAXIMUM of h^ro inches ln diameter. Don',t lOrget to fillin the hole. Public and privato offbisls and property
ownsrs will be more likely to allow contlnued treasure hunting if you do no. environmental <tamqe-

G.E.B.
Detect0rs
(Ste#ard Models)
F
F
r.'
COINMASTER is.! U.S. Fglstered tredemark of Whitc,s Electronics, tnc.
u.5. patent pending by white's Elecrmnkr, tnc., on Ground Exclusion Balance circuitry.

A Message from
Mr. Kenileth White, Sr.
President, White's Electronics
Congratulationst You are now the proud owner
of one"of the world's finest metal detectors' You'll
enjoy the many relaxing hours you'll spend with
vour new detector.
' Ahead of you lie exciting experiences you'll
never forget. For years to come you'll have yarns
to spin a6out the-places you'll-visit, the.people
you;ll meet, the history you'll learn,. and the
treasures and relics you'll uncover. We envy you
your journey and wish you every success' .
' Befbre we tell you how to assemble and
operate your instrument, however, there are two
important Points to leave You with:
i. you new detector is precision-made and
has been carefully tested ai our factory. Properly
cared for, it will last for years and years. Treat
it like a good friend and it should never let you
down.
2. Any piece of fine equipment is only as good
as the person operating it. Right now your
detector is "smarter" than you, so you've got
some catching up to do. Become very familiar with
your instrument. Practice as much as you can'
Soon it will become a Part of You.
You and your metal detector will make an
outstanding team. We've known many "shooters"
who couldfollow in the tracks of others and find
buried coins and rings the others had missed'
You've got the equipment to out-shoot most
- anyone. Now all you need is the practice.
Search t""\
toop uountin/
Thumbnut
short Rod section--
Lower Rod Section
Cood Hunting,
fu*v,Q*
Kenneth White, Sr.
Spring-loaded
Studs
l
a
Connector Sectioq

Check The Contents
of Your Metal Detector Kit:
Your detector kit should contain the items listed
below. lf any parts are missing, contact your dealer
at once. lf you cannot do that, note the problem
on the warranty card and send it back to the factory.
ln either case, your problem will receive prompt at-
tention.
Cable
Connector Plug 1.
2.
Two brass-colored metal rod sections
a. short section
b. long section
Plastic rodlloop connector section (Note: Some
units are shipped from the factory with this sec-
tion already attached to the search loop.)
Mode Switch
3. Search loop ;with cable
attached
4. lnstrument
5. Small Jiffy Bag containing:
a. white battery pack (eight batteries)
b. black battery pack (six batteries)
c. coin and mineral samples
6. Large envelope containing:
a. Assembly and Operating lnstructions
b. Warranty statement and card
(Not available on al! models)
Power Knob
Discriminate Knob
(Not available on all models)
a
Upper Rod Section
./r""p
cable
Tuning Knob
T.A. Knob
(Not available on all models)
Volume Knob
fack for Headphones
Battery Compartment

Assembly lnstructions
1 Crasp the short rod section in your left hand
and the long rod section in your right hand. Align
the two sections and insert the short one into the
fong one until it stops, about two inches. (lllustration
AI
2 With the thumb and forefinger of your left
hand, depress the two spring-loaded studs on the
short rod section and push it gently into the long rod
section until the first pair of matching holes in both
sections is lined up. The spring will then automatical-
ly force the studs through the holes, locking the two
sections together.
3 You are now ready to attach the rod,/loop
connector to your search loop. lf this was ac-
complished prior to shipping, however, simply
proceed to Step 9.
4 Place your loop on a table. Using your left
thumb and forefinger, unscrew and remove the
black thumbnut, setting it to one side. Note how the
brass flange bolt passes through the holes in both of
the mounting flanges, and through two plastic
washers. (lllustration B) Cently remove the flange
bolt and the two washers, setting them to one side
also.
F
D Next, examine the plastic rodlloop connector
end. Note that it has two circular depressions, one
on either side. lnsert the two washers into these
depressions.
6 Now, steady the loop with your right hand
and, grasping the connector section in your left
hand, slowly lower the connector end down
between the two mounting flanges until both pairs
of holes are lined up., (lllustration C)
7 Crasp the brass flange bolt between the
thumb and forefinger of your right hand and insert it
slowly through the aligned holes. You may find it a
bit difficult to align the holes so that the bolt slips
through on your first try. lf so, just push the rod a lit-
tle deeper until the holes align.
I Finally, using the thumb and forefinger of
your left hand, screw the black thumbnut onto the
brass flange bolt until it is finger tight. tf it's too tight,
the loop will not adjust to different angles. lf it's too
loose, the loop may not stay in position.
9 Next, grasp the rod,/loop connector section in
your left hand and the rod in your right hand. Align
the two ends and insert the rodlloop connector sec-
tion into the rod, about 3/4 inch. (lllustration D)
10 with your left thumb, depress the spring-
loaded stud on the rodlloop connector section and
push this section gently into the rod until the holes
on both sections match up. The spring will then
automatically force the stud through the hole, lock-
ing the two sections together.
4
11 Now you're ready to connect the rod and
loop to the instrument. Move the assembled rod and
loop from the table and rest it on the floor so that
the loop is flat on the floor and the rod is sticking
straight up. Make sure that the printing on the loop
is facing you and reads right side up.
lllustration A
lllustration B
lllustration C

12. . uring both hands, pick up the instrument by
its sides and hold it so that the underside of the in-
strument case is facing you. Note that there is a six-
inch, brass-colored metal rod coupling attached to
the.case. Align the rod coupling with t[e upper end
of the rod and gently slide one into the othei until it
stops, about 1% inches. (lllustration E)
13 tfotaing the instrument firmly with the one
hand, use the thumb and forefinger of the other
hand to depress the two spring-loaded studs in the
rod. Slowly lower the instrument until the matching
holes in both the rod and rod coupling are matcheJ
up. The spring will then automatically fbrce the studs
through the holes, locking the rod to the instrument.
to the instrument. Crasp the instrument wiih one
hand. With the other hand, grasp the loose loop
cable and wrap it around the rod three or four timei.
Now, with the screwlock connector between the
thumb and forefinger, gently ease the cable up the
length of the rod until the connector reachei the
plug on the end of the instrument case. (lllustration
F)
15 lnsert the screwlock connector into the plug.
There is only one way it will go in, so there,s no nee?
to_force it. Simply turn the connector one way or the
other until it slips in. Using the same thumb and
forefinger, push the locking ring over the connec-
tion and twist to lock the cable in place. Check this
by trying to remove the connector from the plug. lf
16 Now you're ready to install your two battery
packs. Rest the loop flat on the floor, letting the in-
strument case rest against your knees. On the back
of the case are two black latches, one on either side
of the case. Unsnap these, allowing the battery
access door on the back of the instrument case to
open.
21 Your new detector is fully assembled and
ready to use. (Note: The length of the rod may be
shortened for more comfortible use, or for use in
confined areas. To shorten the rod, depress the two
spring-loaded studs and push the lower rod section
further into the upper section until the second and
thir.d pair of matching holes are lined up. Again, the
spring will automatically lock the two -sections
together. You will probably need to take up the slack
in the loop cable after you,ve shortened the rod. To
dg..ro,.simply rotate the lower rod section again
while depressing the two spring-loaded studs.)-
17 lnside the opened case, you will notice two
sets of red and black wires twisted together. Cently
pull.on both oJ these, so that the battery lead snapi
on the ends of each red and black wire set are out-
side the case. Note that one twisted red and black
wire set has a white battery lead snap end. The other
18 Now, examine the two battery packs. Note
that each pack has a pair of button snaps. Snap the
white battery lead snap to the white battery paci< and
the black battery lead snap to the black ba-ttery pack.
Be sure each is snapped firmly in place.
1
compartment. Keep the red and black wires outside
the.compartment. Make sure the snap ends of each
pack face you and that the snap ends are down.
(lllustration H)
20 Slowly close rhe battery access door, tucking
all the wires inside the case as you do. Lift up on eacF
case latch until the top of the latch is engaged and
then firmly press the latch snugly against the side of
the case.
l&

operating lnstructions
Familiafizlng Yourself With Your Detector
First, examine the instrument case, which contains the following items, and compare it with the photograph on page 3 of this
manual.
Power Switch: This switch has four positions: ,.,Otf/1-cell,,,,,,On,,,,,Bat. Ck.9,, and,,Bat. Ck. .12,,.,,Ott/1-cell,, is the
position to use when you want to turn the detector ofI, or wien.you want to iir".t t'ri".Jnittio";7;dii;;;'batteries.
"on" is the normal operating position of the switch. "Bat. ck. s"'is the fosiii." i. ,i""*nln you want to check the condi_
tion of your small, black battery pack. "Bat. Ck.12" is the position to uise whe;'r;;;;ito check in"1."aiij"n of your
large, white battery pack.
lntensity Meter: This meter has two uses' The signal coming from the loop goes to the speaker and to the meter. you can
Iisten for the telltale sou.nd of a buried object riJvo, .in'*ui.'h ior. it on ihe meter. when the indicator needle moves,
the loop mav be over a buried obiect. rne other ri;it f;;i;;ti"; ro* two battery packs or individual batteries. For this
use, the meter is used in conjunection with.the power sinii. ir.l3tu, s"r" ,,iirc i"6?plr.," a BatteryCheck Merer in_
stead of this meter. Other units simply utilize a different ityt" )nt"nrity Meter.) --'r-'
Tuning: This knob is used to help tune the detector in the air. Note that it has a graduated scale around the outside of the
knob which vou can use as reference poinis to .ia yo, in i;ri;;. you may find that this is a ,,Ten-Turn Control,, knob
which takes ien turns to turn it all the'way frorniL"l;,,y;ri;;;:ition to its,,highest,,.position. lt may actually have no
definite stopping points. when vou've reiched tne hijrreii J-to*urt point, th-e knof,.ay simply become a bit more
difficult to turn. This drag is the same as a definlte rto"ppinip"int
T'A' (Terranean Attenuator or cround Tuner): These two stacked knobs are used to help tune the detector on the ground.
There is a graduated scale around the outside of the knobi ioi ,i"it reference.points to aid in tuning. Notice that one full
turn of the bottom knob produces ten full turns on tn"1"p lnou. fitu uotto,,' f;b ir;;Jfor coarse tuning.The smaller
top knob is used tor fini tuning. Notice, also, ihai th;;;yie a',,Ten-Turn cortior;-[nob, roo.
speaker: The round, brass-colored.grill near the back of the case covers the speaker. (Note: Not available on Model
"C.E.B. 1." Unit shipped with head[hones.)
volume: This knob is used to increase the volume of sound coming from the speaker, from a set of headphones, or from
an earplug' The arrow marked "lncrease" shows the .orr.u.i Jiru?tion to trin-irr" InJu to make the sound louder.
fack: This is the hole into which you can insert the plug on headphones or an earplug.
Detector Mode Switch:. This switch has four positions. Three are for setting- the sensitivity in the discriminator mode,
"High", "Medium", and "Low". The other ooiition is "c.E.B." which is-uieJ?;;;;;i;etecting activity or thecround
Exclusion Balance mode. (Note: Not availabi" ", uil rnoJ"lr.l ' -
Discriminate: This knob will allow you to select different amounts of_discrimination when your Detecto r Modeswitch is
set on one of the three discriminator modes: high, medium, t"*. tu"L, Nri'.riii"'di" Jn all models.)
How To Tune Your Detector
Your new detector will help you locate buried metal or mineral objects, and the discriminator circuit available on some
models will help you decide'on whether or not to aig tte; up. -
Tuning your instrument properly is extremely important, as you would expect, considering how versatile it is. Read the
l:lf#:, instructions carefully anl practice tn6 ,.'iorii;i;si;;;.ari"r .I"tii'yr'r';;n-';o them without tooking at this
one more thing: Always tune your instrument out-of-doors. That way you won,t get unwanted interference from metal
objects used in the conslruction'of your home.
6

G.E.B. Tuning
.. This tuning is used to detect buried ferrous or non-ferrous objects. Ferrous objects are those that contain mostlviron. we
call them MINERALS. Sometimes these obiects are metalli. tnuiti,'i'torruttouii'inJ;";;;il;:ir:;';J';Hi'ii"'.1 ,.na
for prospecting). You should note, however, that y"ri Jui".ioi:;'h;, tr""i iZl"rairg t;ir" instru6ions-will not detect
non-metallic objects.
,".0)il-filffi;?:"tt:,iiil?lttthat contain little or no iron. we callthem METALS. cotd, sitver and copper coins, brass,
Follow these steps for C.E.B. Tuning:
1' whilestanding,.letthelooprestflatontheground. lf yourinstrumenthasabuilt-inDiscriminator,besureyouhaveset
the Detector Mode Switch to ,,C.E.8.,,.
2' Turn the r'A' knob so that the p.ointer points to "5". Turn the runing knob all the way to the left (counter-clockwise)
until it sto.ps or begins to.dlag.lf your instrument has a built-in Discrinrinator, be sure you have set the Discriminate
knob all the way to the left lcounter-clockwise) to ;,0r,.- - - "
3' Turn the volume knob all the way to the right (clockwise), in the direction of the arrow. lf you are wearing head-
phones, however, you only needio turn thls control " ir"ii"rorntlo ir'"iijiiiGiockwise). -
4. Turn the Power Switch to ,,On,,.
5' Raisetheloopuntil therodorprobeis-parallel tothe.ground,or.theloopis.twotothreefeetoff theground.Atthis
point, there will be no sound toming from the speakEr or hladphon"i.-rrjlrlJr't-J"a
5. Now, turn the funing. knob to the right (clockwise), in the direction of the arrow, until a tone appears. Slowly turn the
knob back to the lefi(counter-clocktise) until tr,eionealmori.irpl"t"iy;;""t';;;;:'il isfaintsound is the rhresho/d
Ione, and this step is called Air Tuning.
7' Next, lower the loop again, letting it rest flat on the ground. Do not force it against the ground.
8' The Threshold rone you've been hearing. will now. do one of three things: a) it will increase in volume; b) it will
decrease or disappear compretery; or c) lhere wiil be-viriuilly rr;h;;;;j;iir;r"irn.,".
a) lf the sound increases, then turn the top LA..knob slowly.to the left (counter_clockwise) until the tone a/most
completely Soes away. lf this does not occur, however, within " ,"ry ,hoiiiin..u irUout vr-turn), simply stop and
proceed to Step 9. This is called Ground Tuning.
b) tf the sound de.creases or disappears, then turn the top T.A. knob slowly to the right (clockwise) until the sound
reappears. lf this does not occui, however,.within a.veiy.short time-abbut z"r#:Jir"pr;';; ;;;"p"o=.""a to
Step 9. Now, turn the top LA. knob slowly'back to the l6ft (c;unter-clockwir"i ;;ilithe tone is a/mosr completely
gone again. This is called Cround Tuninfr.
c) lf there is virtually no change, then your detector is properly tuned and ready for G.E.B. use.
9' Now raise the looo back into the air and reset Air Tu1i.ng. This is.done by simply turning the runing knob to the right
(clockwise) as needed in oraeilo i"ii"* tr," iii"iir,rZrr,ria'ion".
10. Again, lower the loop back to the ground and reset cround Tuning (step g).
11' Repeat steps 9 and 10 until there is virtually no difference in the volume of sound coming from the speaker or
headphones as you raise and lower the loop. Three or four repetitions of these steps should be sufficient.
12. Your detector is now properly tuned and ready for C.E.B. use. R
area, vou may have to reiune your instrument. ro do so, simpt;T":if?#lltl';Lm*ve to a.different search
lllustration I

Using Your Detector in the Discriminate Mode
Once you have located a buried object using C.E.B. operation, you can use the Discriminate rnode available on some
models to help you decide whether you should dig it up.
The Discriminate function will help- identify small junk items (bottle caps, tin foil, gum wrappers, naib and dre like). lt
will also.identify ferrous obfects regardless of size. Remember, a ferrous object is one made mottlr of iron (belt hrcfhs,
cannon balls, chunks of scrap iron, tin cans and the like).
lf you are searching.for coins, rings or jewelry on a beaclr or in a park, then you will probably want to use the
Discriminate function to help you eliminate both the small lunk items and the ferrous objeas.
On the other hand, if you're searching on an old Civil War battlefield for relics (swords, cannonballs, rifles and the like),
or if ygu are prospecting, then you would not want to use the Discriminate function as that eliminates these ferrous objects,
as well as the lunk items.
Follow these steps for Discriminate Operation:
.To simplify matters_here, we will consider both smalllunk items and ferrous objects as MINERALS, even though many
lunk items are not made mostly of iron.
1. Turn the Detector Mode Switch to the "High" Discriminate Sensitivity position, be sure the Discriminate knob is set
all the way to the left (counter-clockwise) 10 "0".
2. While standing, let the loop rest flat on the ground, just along side the spot tvhere you located the object.
3. Turn the funing knob all the way to the right (clockwise) until it stops or begins to drag. A toud tone should
then come from the speaker or headphones.
4. lf you do not hear a loud tone, move the Detector Mode Switch to the "Medium" Discriminate Sensitivity position.
lf there is still no sound coming from the speaker or headphones, then set the Detector Mode Switch on ihe "Low"
position.
(The reason there may be no sound wtrile in the "High," or sometimes "Medium" position, is that the ground ranges
from heavy mineralization to extremely heavy mineralization. lt will be most unusuil if you ever have to-set the swilch
in the "Low" position. But, regardless, you want to hear a tone from the speaker or headphones because it is this tone
that will help you discriminate in your "shooting".)
5. Now that you have a loud tone, turn the Tuning knob slowly back to the left (counter-clockwise) until the sound
almost completely goes away. This faint sound is called the Threshold Tone.
6. Next, pass. the loop over the exact spot where you first received a reading that an object was buried. tf the sound
fades or disappears, the obfect is MINERAL and probably a bottle cap or imall nail.
(Note: The obiea could be MINERAL even if the tone did not fade or disappear.You can determine this by increasing
the amount of discrimination as described below.)
Adjusting Discrimination
With the Discriminate- knob set on"0", your detector will discriminate against such items as bottle caps and small naits
while in Discriminate modes. You can, however, increase the amount of discri-mination by advancing this control to the right
(clockwise).
For example,.by Setting the Discriminate knob at about "4" you can discriminate against pull tabs and foil. You should
note, however, that at this .setting .you will also. discriminate against such objects ai nickels and rings. By turning the
Discriminate knob even further to the right (clockwise), you can rule out largei items like aluminum sdrew caps, tiricans
and large chunks of iron. But at the same time, you will eliminate most sing-ie coins.
Generally, you can determine through practice just how far the Discriminate knob needs to be turned in order to
eliminate various types of MINERAL objects. You should, therefore, avoid turning it further than absolutely necessary, as
this will result in discriminating against other objects for which you may be searching.
After you have identifigd t-hg type of object you have located, decided whether or not to dig, and are finally ready
to resume searching, you should retune your instrument in the C.E.B. mode, as described earlieiin this manual.

Searching with Your Detector
To locate hidden or buried objects with a prop-qrlytuned detector, systematicaily sweep the loop from side to side acrojs
the area you are working' (tllustrition t, prsi zitni r.ig"itr* a-i.i"a". of your loop, the more area you can cover in a
single sweep and the faster you can searci an area. r5r "r.rpt", with an eight-inch loop you should take four-inch
steps, moving the loop ahead the same amount after "".r' rii"ip. ro,. .uri"rrn,,- f"irorh6n.e when ,"ir.hing, yo,
*::l,gr:I:l:,;:11; ffl;[:I,"r:p at a constant levelinJ .i.i.'"i" iie ground ., po*irii", }"tt"iiiitr," i",,,sirri.,.tion,
You should note that you can also search an area with yo. ur detector in the Discriminate mode. The Discriminate
function, however, tends to work best in iieas.of.light"r ;i;"i"lil.tion "nJ in .**;'fi;;; the ground is relatively smooth
and even, therebv allowing you to r""r.h *iitr itrli"opri;i-on.'iil g..rra lillri 'i;;;fy above it.
should you decide to search an area with your detector in the Discriminate mode, use the same searching procedures
as described above. But first, trn" yiii irii-ir."rt as follows:
1. Tune your instrument in the G.E.B. mode.
Follow steps 1 through 5 for tuning in the Discriminate operation, but keep the loop stightty (about 1/z-inch) ott
the ground at all times.
3. Finally, lower the loop until it is f/at against the ground and
in tn.i'oisl,imin"tu ,'oa". it 'i",rJ'"1"* "ii.init?;;i;,;ii.Jiy'fiIi.rlit'Jfii3."3':,;ffilllg,lltl,l,"#:odetector
(Note: You should remember that if vou are searching.in an area of rough terrain (a plowed field for example), it
may not be possible to search with v'oui i."i17ri rr"tri" !-r"rna. ln ,rii'."s"i'vo, !r,oriJ r"ir.r, *ii6-the loop
iust barelv off the ground, after turiing yopi instrumunt r"t,shrr-rd;; ;i"*6;tvlt wrrich you intend to search.
Remember, also, thit if the loop is raistd i6or"-i't'" tr"iirii'?t ,ir'ilr' ir,"'Ji,".iri.iras trned, a toud tone may be
emitted from the speaker. Yet, an unneeded toss of aeteEiion a"ptt may occur if the instrument is tuned with the
loop higher than necessary.)
All in all, the depth to which vour instrument witl detect in the Discriminate mode may depend on a number of
factors: 1) The degree of mineralizalion in the ground. rhe'[ii ,in"rrri;;il;; ih;iiJJi i, wi1 d'etect. 2) The height of
the loop during tuning and searching. The to*Er i[u lo"p, ,r,"-a""per it wiri aeie;. A;i; 3) How carefully your detector
is tuned. The more aclurate the tuning, the deeper ii;iii i;*i.-
Finally' it is a good policy, no matter which. mode you are using, to.periodicalty stop and readjust the tuning of your
instrument slightlv' As you b6come more exferie;."d, h;;;;;il"L *iri begin to noticL-lust by differences in the toneyou hear-whether or not the tuning n""al to U"-.Jir;il:'-'' '"'
listen for the Tone
The tone coming from the speaker or headphones will tetl you where. objects are located. when the votume of the
tone increases, the loop is over ihe obiect. whJ, trr" ,"i;r; ;a;;".ses, the.loop has passed away from the obiect. The
volume will be the loudest when the.6ri"r ri th"-lo;;ir-Jir"iiv o*r.the objeci. nn [iception to this rule, however, is
a coin buried on edge. tn this case, the rotrr" *iri-u5 b;;ilh"" tri" "ali"7iI,;;;;p passes over the coin.
Another exception is a nail buried flat. To become more familia.r with the sound of nails, place a large nail ftat on the
ground and pass the loop lengthwise high over it. Norice the double. sr!rnJi;;;';f;oJ can usualty tell a nail or otherlong iron obiect is bein! deteited. t,toti'ce,-atio, init v"i, j;;"";r-1;';.;6i;r;;#'if ;Jr"io*", the toop or sweep it ar adifferent angle' Thus, 19u c1n avoia Jilg-inirp rort'rnwanred ""ir;,"ii;;;r, r"r'ill ')orbt"soundby simpty raisingyour loop slightly higher and passing it"Jr"i tte ar"i-"1 JirJ"i"nt'"ngr"r.
b*,,Tf#;,ql:nxffii:lifr:illi":$",":"ill"p:;'"*i,,,",%;-J,i[J:T#[:'illli,lil?;illi,:illilJi*:,3""?Jij[:
the loop stishtty after first toc.itil ; ilri; ;bi;:"' rrq.J qJ us'Lr I
Finally, large or small increases in the volume of the tone are usually caused by 9ne of three things when detecting
an obiect: 1) the size of the object; 2) how dApliih"_gLi".i iiirri"d;'or 3j " .o'ruiniiion of the tio. Generaily, the
larger the object, the greater ttr" ii.i"ir"-i;.rdi;;e. rh;;;6;;.it. ir'u*r"t, i; ,;ir;, the increase. Thus, a singre
:'#r;f::iJlro,;::;';":'v cause onlv aiLilhi in.,""'e in ,olumJ, *r'il" .-r"'s;-;uil1*[iii;"il;i';; J,;ipryj..y..r,"
k

lllustration lllustration
Watch the Meter
The indicator needle on the rntensity Meter is very sensitive to change. lt.will register buried objects that you might
-is, Uy just listening t"in" ion" fronr tl6 speaker. The meter will alw.ays piovide a visual. reading to match sound readings,
;;;;lf i;;;;;i f,; i Jiii"r"n." in the ione. so, keep an eye on thit meter; it could be very important. (tllustration K)
Practice Makes Perfect
Here are a few ideas to help you practice and sharpen your l'shooting" skills:
1. place a small object (the sample that comeswith your detector kit), a medium-sized.object (a tin can lid will do nicely),
" ;;J;l;rs".bja-.id.i;yi;;i;;i;;th" liiit'6niorton the lawn. Leave a few reei between them. Following the
'inrirr.tio"nr girln Li;liei.t,inL you, instrument. Pais the loop over each object, noting how much the volume increases
or decreases-as you move from object to object. (lllustration L)
2. Take two quarters. Place one on top of the gras.s. A few feet away, dig a small hole, no more than two inches deep, and
- ;;, ir," ,l11.'g.."in. Tune your instrum"r,tlnJp.rt the loop,over t6e coin on the surface, then over the buried coin.
Note how the volume incieases or decreases as you move from one to the other.
3. plant a test garden. To become better acquaintedwith various kinds of buried obJe.c1s,^|rtf :9-T"_T^utal.items at
-'l;";;J"ptf,r.M;["';;y*;i";ag".d;;liioiatea.wnerg.y.ou.cansettoiteasily..lt'-s.besttomakeamapojthearea,
i6r*i"s ,,[t it i, ilriiJ'.-niiiti a"pfi. voril"ii g"rden will'help yoi practice aid will also provide a handv method
of peri6dically checking the performance of your instrument'
Proper Care Of Your Detector
The following are precautions you should take to protect your instrument from harm, insure its long life, and avoid nullify-
ing the warranty.
Cleaning: The loop and rod or probe are waterproof. They_can-be cleaned with fresh water and a mild cleanser' After
cleaning", however, d;tih" ;rtrJment thoroughly. Cautioni The instrument case is not waterproof, and water-if allowed
to enter it-may damage electronic components.
Weather Conditions: protect your detector from excessively cold weather. Freezing can damage the electronic com-
ponents, the case and/or the bitteries. Excessive heat can alsodamage the instrument. Never leave it in the sun. lt's best to
tt iii;iil;rr"a" *n"n t"mfoiarity not in use. lf it's left in a car oni.hot day,.cover it with a blanket or something similar
iJ piot".tlt t-, tn" Jii".t'riyi of the sun, and then leave the windows slightly open to permit ventilation. Needless to
,uyi prot".t your detector if you operate it in the rain, as water may get into the instrument case'
Salt Water: Salt water is very corrosivel Immediately after your detector has been exposed to salt water, rinse it
thorouehly with fresi'1a,i1;6"in|iri"tur'noi toitt"'* wateito enter the instrument case. Then wipe it with a cloth
dampeied with fresh water and dry it thoroughly'
Storage: if you plan to store your detector-for any length of.time, unsnap the battery pack, remove it from the instrument
and take the batteries out of the holder. Wtren6re, iour detecior is not in use, turn the Power knob all the way to the
"Off" position.
10

t
t
Batteries
Batteries are the lifeblood of your instrument. Your white battery pack holds eight'1 %-volt AA penlight batteries. Your
black battery pack holds sixlVz-volt AA penlight batteries. (lllustration M) These are available at drug and grocery stores
almost everywhere. Any brand will work well, although many "shooters" recommend the alkaline type for longer life.
To change batteries, first remove the battery pack from the instrument. Before you remove any batteries examine the pack.
Note the exact position of each battery and the position of the battery lead snaps. Your detector will not work unless the
batteries are properly installed and the battery lead is properly connected.
Each battery has a positive (+) end and a negative (-) end. The plus (+) and minus (-) symbols are clearly marked on all
batteries. Remove one of the batteries from the battery pack. Notice that the slot from which it was removed also has the
positive (*) and negative (-) symbols clearly marked.
To replace the batteries, simply match the plus (+) and minus (-) symbols on the new battery with the plus (+) and minus
(-) synibols on the battery snhf, and then snap the new battery into place.
The battery lead snaps must also be matched to the button snaps on the pack-plus (*) to plus, minus (-) to
minus-befoie you reconnect the power cable.
You detector is designed so that you can test (1) the full white battery pack, (2) the full black battery pack, or (3) each
battery, one at a time.
1. To test the full white battery pack:
a. Set the Power switch to the "Bat. Ck. 12" position.
b. Turn the Volume knob all the way to the right, in the direction of the arrow, so that the volume of sound coming
frofn the speaker is as loud as it can be. Adjust the funer knob if necessary.
c. Observe the lntensity Meter. Notice the area on the dial which has the words "Bat. Check" printed on it. lf the in-
dicator needle moves into that area and stays there for three or four seconds, your pack is in good condition. lf it
does not move into the "Bat. Check" or "Battery" area, or it moves there for only a second and then drops back
down, your pack is weak. (Note: On models with Eattery Check Meters only, the needle should register in the
"Bat." zone.)
d. lf your pack is weak you will have one or more weak batteries. See the instructions below for testing a single
battery.
L To test the full black battery pack:
a. Set the Power switch to the "Bat. Ck. 9" position.
b. Follow the steps listed above for testing the white pack.
3. To test a single battery:
a. Open the battery access door at the rear of your instrument case by unsnapping the side latches.
b. Remove the white battery pack (if it is the pack that tested as being weak), or the black battery pack (if it is the
weak pack).
c. Now, remove a single battery from the weak pack.
d. Notice that the battery access door has a receptacle designed to hold one battery. Match the positive (+) end of
the battery with the positive (+) end of the receptacle and press the battery into place. (lllustration N)
e. Observe the indicator needle on the lntensity or Battery Check Meters. lf it moves into the Bat. Check area and
stays there three or four seconds, the battery is good. lf the needle fails to move into the area or drops out of it
after a second, the battery is weak and should be discarded.
f. Repeat this entire procedure to test each individual battery in the weak pack. When you have located all the weak
batteries and discarded them, snap new ones in their place and replace the battery pack in its proper position in
the battery pack compartment.
Proionged use of your detector will cause a severe drain on your batteries. lt's best to turn the power off from time to time
during the day of "shooting". This gives you a chance to take a break and it gives your batteries a rest. ln a few minutes both
you and your batteries will be ready to go again.
lf you plan to store your detector for several weeks or more, it would be wise to keep the batteries in the refrigerator. Do-
ing so will prolong their lives. Also, it's a good idea to carry an extra battery pack and some spare batteries with you on out-
ings.
11
I
tllustration Mlllustration N

What Will Your Instrument Detect?
. Silver, lea.l.,. copper, bottle caps, tin foil, cartridge cases, rings, brass and tin cans are just a few of the highly conductive
objects that will cause a response in your speaker or headphones. Your instrument, however, will not deleci sticks, rags,
bones, paper, wood or other non-metallic objects.
The longer many metal objects have been buried, the better you may be able to detect them. A chemical reaction
between such objects as silver or copper coins and the.surrounding soil often creates a "hato" effect. This "halo" may cause
your detector to register a much larger increase in volume than might otherwise be expected for a small coin. Thei,halo,,
can actually help you delect betterl ln fact, if the "halo" is strong enough, your instrument may continue to register even
after you have dug up the coin.
Some Thoughts on Ethics
Treasure hunting is the kind of new hobby that fires the imagination and generates its own enthusiasm. lt's the most
natural thing in the world to dig as fast as you can the minute you hear that first loud, unmistakable signal. lt will be a real
thrill to discover what treasure is right beneath your feet.
But stop a minute! Be a little far-sighted and consider the long-run, too.
. We strongly urge you to adopt a code of ethics which will preserve the environment and also the rights of treasure
hunters to operate detectors with as few restrictions as possible.
Before you even begin a search, check the law, ordinance or regulations about hunting on publicly owned sites.
Abide by the rules. lf the area is private property, get written permission from the owner to search it. You may find he will
be more eager to give permission if you suggest sharing your finds with him, or if you offer to search for a specific item he
has lost.
About digging: in lawn areas use a screwdriver of no more than six or eight inches as your tool. Limit the size of the hole
to a maximum of two inches in diameter, cutting a plug of sod which can be easily replaced after you make your find and
fill the hole. Leaving holes is both unsightly and dangerous!
Detectors or detector modes designed for locating large and deeply buried objects should be used with discretion-
never in lawn areas, and with careful judgment in other locations. Consider the scar you may leave by your digging before
you start. This will vary a lot from one part of the country to another, depending on local soil and climatic conditions.
Public officials and private property owners will be much more likely to allow continued treasure hunting if you do no
environmental damage. You may even be able to increase your reputation as an ethical hunter by volunteering to carry out
and dispose of whatever trash items you find.
Adoption of these attitudes can only enhance the public's opinion of treasure hunters and assure that many areas, both
public and private, remain open to you and your new detector.
Service And Warranty lnformation
lf your new metal detector is ever in need of service, ship it to us at the factory address below or to one of the Service
Centers listed on the back of the warranty statement. lnsure it fully, prepay the charges and enclose a letter describing the
nature of the problem. As long as your detector is under warranty, there is no charge other than a small handling and
postage fee.
Read your warranty card carefully. It describes completely what is covered and the length of the coverage. lf you have any
questions, don't hesitate to write us. We will be happy to answer any questions you may have.
White's Electronics, lnc.
1011 Pleasant Valley Road, Sweet Home, Oregon 973ffi, U.S.A.
12 P/N 62t-o1itz Printed inU.S.A.11/76

ALTERilATE GTB TUNI}IG PROCEDURES
Note: Famlliarize yourself with controls (see page 6 ln
instruction manual).
INSTANT CONTROL CHECK: This is to check that
your GEB controls and search loop are operating
correctly. Follow this procedure io complete the
Cohrrul check.
1. Set the Detector Mode switch to the GEB position;
turn the'volume control knob fully in the direction of
the arrow (to the right); and turn the instrument to
the "ON" position.
2. Hold the loop 6" to 8" in the air; set the T.A. Knob
(ground tuner) fully clockwise (right) and adjust the
tuning knob (air tuner) for a slight tone from the
speaker. The tuner must be turned clockwise to
increase or reach the tone or counter-clockwise to
reduce the tone.
Lower the loop to the ground. THE TONE SHOULO
GET LOUDER!
3. Raise the loop again 6" to 8". Turn the T.A. knob
f ully counter-clockwlse (left) and readjust the tuning
knob (air tuner) for a slight tone from the speaker.
Lower the loop to the ground. THE TONE SHOULD
GET QUIETER!
KEEP CLEAR OF ANY BURTED OBJECTS
You have now completed the control checks and imay

l0ll Pleasant Valley Rd.
Sweet Home, Or. 97386
Printed in U.S.A.
Code No.621-0112