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BH Big Bud Pro

Operating Manual

The Bud-series detectors

NOTE: The following manual was scanned with OCR software. Be aware that there may be a few misspellings or anomalies due to the inaccuracies of the software translation. Images are excluded due to the memory requirements; therefore, there will be references to illustrations that do not exist in this text only document.

Big Bud Pro Automatic VLF Discriminator

Treasure Hunter Code of Ethics

1. Respect the rights and property of others.

2. Observe all laws whether national state or local. Aid law enforcement officials whenever possible.

3. Never destroy priceless historical or archeological treasures.

4. Leave the land and vegetation as it was. Fill all holes.

5. Remove all trash and litter when you leave.

6. All treasure hunters may be judged by the example you set. Always obtain permission before searching on private property. Be extremely careful with your probing picking up and discarding trash and ALWAYS COVER YOUR HOLES.


Assembly of this unit is easy and requires no special tools. The only assembly required is to attach the search coil and lower stem to the upper stem and control housing.

1. Depress the button on the upper end of the lower stem and slide it into the upper stem. Push the lower stem up so that the button snaps into the third hole from the end of the upper stem.

2. Wind the search coil cable around the stem as shown.

3. Install the coil connector into the mating connector on the control housing.


This unit can be assembled in either of two configurations or easily converted from one to the other. The electronic control housing can be mounted on the arm rest pole or can be body mounted


2. The control housing is equipped with two holes at the rear of the case which accommodate the spring clips of the shoulder strap.

3. Attach the strap to the case. Unwrap just enough cable from around the stem to allow good freedom of use.


This detector requires two (2) 9 volt ALKALINE transistor-type batteries. (Customer furnished) Such as: Duracell #MN1604 Radio Shack #23-553 Eveready Energlzer #522 or any equivalent to these. Access to the batteries b gained by pulling out on the battery doors located on the bottom of the control housing

BATTERY CHECK To check the detector s batteries, switch the POWER/mode switch to DISC and then hold the Battery Check toggle to the ---. The battery condition will be Indicated on the detector meter.


Alkaline Transistor Batteries Alkaline transistor batteries, when fresh, will cause the battery check meter to peg to the far right. This is normal even when checked after several hours of Instrument use. The batteries are at about half life when the meter reads 10.


NiCad transistor batteries (not recommended) will operate the detector for only about three hours, after which they must be recharged Fully charged, they will read 7 and above. After several minutes of operation they will typically read 2 to 5 on the battery check scale and then drop into the RED over the next two hours.

The NiCad battery packs for the Bud series detectors will afford the largest operating time between charges A fully charged pack will read --- and above on the meter. After about one hour of use the pack will typically read 2 to 5 on the battery check scale and then drop slowly over a period of 15 to 20 hours of ---


The use of Alkaline batteries is specified for the detector. Alkaline batteries can supply the power needed for the many features and powerful performance packed into the sleek lightweight Bud case.

The following tips will help you get maximum battery life.

1. Using headphones can be very beneficial Battery life will be greatly extended. Background noise such as street traffic is ---- Targets are easier to hear.

2 Switch batteries around. Upon Installing a fresh set of 9 volt Alkaline batteries keep track of your operating time. after approximately four or five hours use switch the batteries around Audio draws one battery down slightly taster than the other. Thus switching them around helps insure equal drain.

3. Make complete use of the batteries. The Battery Good region of the meter is like a fuel gauge--it tells you when the batteries are getting low. However like the fuel gauge on a car--Empty does not always mean you are completely out of fuel There is usually some reserve. The battery check Is like the fuel gauge of the car--there is some reserve. To discover how much reserve your particular unit has simply run it until It no longer functions like running the car completely out of fuel to know how long you can go after the gauge shows empty.

4. Carry a fresh sot of batteries. Once you have established where the batteries actually go dead you win know when to install a fresh set. When the battery check shows the batteries are getting low start carrying a fresh set so you will have them ready for replacement.

5. An audible warning (loud tone that can not be tuned out) will occur when battery life falls below 0 on the meter. Turn the detector off and install new or recharged batteries.

Remember 95% of all detector malfunctions are either due to faulty batteries or poor conditions at the battery clip. Always check your battery condition if you feel your detector is not working properly. After you have connected and disconnected your batteries several times, the prongs on the clip may spread apart or the prongs on the battery itself may spread. Gently squeeze these prongs together with your fingers to insure a good snug fit.

Anytime you are going to store your detector make sure you remove the batteries. Storing the batteries in your refrigerator is the best place for them.


The following is a picture of all the controls and switched on your unit and a brief statement of their functions.

1) POWER/mode

2) DlSC/Adjust


4) Mode toggle

5) GND/salt


6) BLANKER adjust

7) BLANKER toggle

1. Power Switch: This switch is used to turn the detector ON or OFF. It is also used to select search modes. In the DISC position the DISCRIMINATION control is activated. The operator can adjust the DISCRIMINATION control to accept or reject nonferrous targets that fall into the pull tab to screw cap range. This range includes some larger old rings and old coins in addition to zinc pennies and some older pennies. In the NOTCH position most pull tabs can be notched out. Iron and light foil wall automatically be rejected In the AUTO NOTCH position most pull tabs, screw caps, iron and light foil will automatically be rejected Thus, the detector will generally respond to COINS.

2. DISCRIMINATION/NOTCH: Allows variable rejection or notching of nonferrous trash Items.

3. Sensitivity: This control is used to reduce the detectors sensitivity to conditions that may cause the unit to respond in an erratic manner. Broadcasting antennas, power lines and intense mineralization changes can cause the detector to emit false signals. Very large or multiple, closely spaced small trash targets can cause the detector to emit sounds. Generally these signals will sound chopped and will not be repeatable and you will soon learn to recognize them. Turning down the sensitivity control will help reduce the detectors erratic response if the above conditions should ever occur. There will also be some loss of target sensitivity, so always set the sensitivity control as high as you can and yet still maintain smooth operation.

4. Pinpointing and Mode Toggle Switch: This is a three (3) position switch with one (1 ) momentary and two (2) lock positions. The center lock position is the ALL METALS pinpointing mode. From this center position the momentary position can be used for instant retuning or faster detuning of the ALL METALS auto pinpointing mode. The second lock position (away from center places the detector into its normal silent search motion mode.

5. GND./Salt ADj.: This control is used for adjusting out the effects of mineralized ground or the effects of saltwater.

6. BLANKER: This Is the variable control that sets the amount of surface blanking from 1 to 4 inches. The operator can then search only for those coins that are deeper than what the blanker is set for.

7. BLANKER ON-OFF/Batt. Check Toggle This is a three (3) position switch with one (1) momentary and two (2) lock positions. The center lock position is the OFF position. The second lock position (away from center) turns the blanking circuits ON. The momentary position is for checking the detector s batteries.


The meter display provides a truly phenomenal wealth of information to the TH er. A glance at the meter will tell you with a great deal of accuracy what the find may be. The meter also Is used to display battery condition.

NOTE: The meter is scaled such that the marked off areas represent the most likely meter reading for a particular object. However, there may be some overlapping of target readings into adjacent areas due to such things as the Halo Effect. Over a period of time you will begin to recognize where certain targets tend to register on the T.l. scale.


ATI · Audio Target Identification: When operating in the GB/DISC mode the detector automatically ignores (rejects) iron and most foil trash, when foil rejection is selected. All other metal targets will cause an audio response. Through ATI these targets can be placed into three general categories for identification of the detected item.

The chart demonstrates various targets and their corresponding tone l.D. s.


N0 Low Medium

response tone tone High tone


Your new detector has been designed with simplicity and optimum performance in mind.

(Pre- Operation: After you have assembled the unit and installed fresh batteries you may immediately begin using the detector. The following instructions will get you started. However, for better results you should read the complete owners manual

1. Set all controls as shown:




check ON


2. The detector will be functional in its automatic and preset states for general use.

3. Sweep the search coil as shown:

NOTE: This detector relies on motion to activate the GB Disc Mode.







4. The presence of any nonferrous metal will be indicated by an audible signal each time the coil is passed over the buried object.

5. To locate the object for recovery, set the mode toggle to All Metals." Position the coil (as shown) over the object at point of loudest response.

6. To continue hunting, retune the mode to DISC. If, due to ground mineralization, a more precise ground adjustment if needed or you would like to search in the All Metals mode, the GND/Salt ADJ. should be set as follows: a Begin with the unit Preset as previously described Make the ground adjustment in a spot devoid of metal.

b. With the search coil about 12 inches above the ground--switch the Mode Toggle to All Metals (center position).

c. Lower the coil near to the ground If r/mineralization is present the detectors tone win increase in volume.

d. Turn the GND/Salt control counterclockwise (CCU to about the word Ground"

e. Raise the coil back up 10 or 12 inches and press the Mode Toggle to TUNE and release it.

f. Lower the coil back near to the ground again. If there Is still a change in the tone repeat steps 5 and 6 each time making a minor ad/justment to the GND/Salt control until there is no change In the tone.



LOUD Threshold Tone

If the Ground Balance Control is not correctly set moving the loop up and down will cause a significant change in the threshold audio.


Threshold Tone

With the Ground Balance Control correctly set there wall be little or no change in the threshold audio AS the loop is moved up or down near the ground

The detector is now ready to operate in the All Metals mode. In this mode any metal (ferrous or nonferrous) will be detected

To balance the effects of saltwater use the same general procedures as used for ground balancing. The difference is that the GND/Salt control will balance salt around the counterclockwise area of its range, near the word salt.

NOTE: If there is difficulty in making the adjustment you may be over a hidden metal object. Move to another area and try again.


1. Power/Mode Switch: This is a four position rotary switch which basically turns the detector ON and OFF. The OFF position cuts off all power to the detector. The DISC position of the switch, in conjunction with the Variable DISC./NOTCH control, functions as a standard variable GB Discriminator. The NOTCH position of the switch, in conjunction with the variable DISC./NOTCH control, functions as a rejection NOTCH. The AUTO NOTCH position is a fully automatic setting. The detector will automatically ignore the most common forms of trash and the newer zinc penny.

2. Mode Toggle: This is a three position toggle switch with two lock positions and one momentary position. The center lock position is the ALL METALS mode. From the center ALL METALS position the toggle can be pressed into the momentary position and released to (Disc.) (Retune/Dl c) quickly retune the ALL METALS If notch Lock needed. Or the toggle can be held

(All Metal) in the momentary position for DISC and NOTCH operation. The lock position away from center is used for normal DISC and NOTCH operation.

3. Sensitivity primary function of this control is to reduce the detectors sensitivity to those influences that could make the operation more difficult for you. There are some things that can cause the response d the detector to become erratic as you are using it Normally you will not hear any sound from the detector unless you pass the search coil over a good --- --- a multitude of closely spaced, smaller rejected trash --- can cause the detector to emit choppy, sputtering sounds. CB radios, broadcasting antennas, --- mineralization change and other sources of electrical noise can also cause the detector to emit --- signals. The false signals will generally ground --- and will not be repeatable so you will not have any trouble recognizing them. They can be distracting though, and tuning down the sensitivity control will help. They will also cause a small --- of target sensitivity, so always set the sensitivity control as high you can, whale still maintaining smooth operation.







4. Discrimination and NOTCH control: This variable control allows the operator selective response to targets that are in the foil-screw cap range. When the LOWER switch is set to DISC. the control functions as a standard variable discriminator. As the control is increased from its full counterclockwise position, iron, foil, nickels, pull tabs, screw caps, pennies and dimes will be rejected in that order.

Often it is desirable to eliminate some pull tabs without also rejecting nickels, since many types of gold rings are also rejected along with the nickel

This can be done by setting the POWER switch to NOTCH . The DISC/ NOTCH control now functions as a variable notch rejection window. The notch can then be adjusted to reject, or notch out, selected types of pull tabs or other trash When using the notch feature, most Iron and small foil will be automatically rejected by the discrimination circuit

To set the notch, use a pull tab of the type to be rejected. Adjust the NOTCH control to the point (around the area marked --- T B on the control) at which the tab is notched-out, or rejected. Now check a nickel to be sure it is still accepted. Note that some pull tabs or tab have nearly the same detection properties as nickels and some gold ring These Items can not be separated.

5. BLANKER CONTROL & TOGGLE: The Big Bud Pro metal detector features automatic detection of deep coin targets, while at the same time ignoring all shallow surface targets and trash. Most experienced Th ers know that the majority of trash targets they encounter are shallow--generally less than three inches deep. They also know that most older coins, rings and other relics are often deeper than three inches.

Until now, the detector sensitivity to targets could be reduced only to deep targets but not to shallow often less desirable targets. This is just the opposite of what most experienced TH ers wanted.

The Blanker Toggle and variable control activate an automatic circuit which reduces, and in most cases completely eliminates, detection of all shallow targets and trash. Yet, maximum sensitivity and discrimination of the deeper targets is still maintained.

The following is an illustration of the old sensitivity control system and the new Blanker feature.

Sensitivity Control


Surface Blanking

(Set at 3 )


No detection deeper

than this point

No detection first 3,

detection past 3 to

maximum depth

BL,ANKING To use blanking, simply set the variable blanker control to the desired depth and turn the blanker toggle ON." CAUTION: When using the 3 and 4 inch blanker settings (red area marked on control) the SENSITIVITY control must be set at maximum, or as near maximum as condltlons permit If the blanker setting exceeds the sensitivity setting nothing can be detected. Besides being useful In locating only deeper targets, the blanker can also be used as a depth Indicator. When searching with the blanker ON, any detected good target must be deeper than the blanker setting

The blanking feature can be a valuable tool in locating the deeper, often more valuable targets. However, a word of caustion--use of the Blanking feature can eliminate detection of most all shallow items Including newer, recently lost coins and rings. In addition, if there are very few or possibly even no deep coins In the area belong searched, then it is possible you could search for hours and not recover a single coin.


6. AUTO NOTCH Is a unique automatic, auto notch windowing system. When the power switch is set to AUTO NOTCH--the most common forms of trash will automatically be ignored by the detector. At the same time the most commonly found U.S. coins, including the nickel, will automatically read good."

Note, however, that the new zinc pennies and some older, thin, copper pennies are rejected by the windowed area These items will normally not be detected.

If you want to find a lot of coins without wasting time on trash or zinc pennies then this is certainly the mode to use.


7. GND/Salt ADJ.: This is a one turn variable control. The control can be used to adjust (balance) out the All Metal mode response to mineralized --- or saltwater. However, for most land and freshwater uses, the preset setting of the control may provide satisfactory performance when

The basic method for balancing this detector has already been explained.


The detector should be held in a position that is comfortable for you. Sweep the detector from side to side in about a three foot arc. The Bounty Hunter does not need to be hurried, so go at a pace that doesn t wear you out.

Sweep in a slightly overlapping pattern as shown. Use as you would any normal detector --the search signal should peak as the target center is passed Try to keep the search coil parallel to the ground at all times and avoid lifting the coil off the ground at the end of each swing. This will prevent loss of detection of some deeper targets, since you are putting more distance between the coil and the target on a careless swing.

In areas with well-kept lawns, sweep the coil as close to the ground as possible without touching. Hitting the ground or rocks may cause a false signal much like a desired target would sound. Sweeping the coil too high above the ground results in a loss of depth.

When operating the detector, some false signals may occur at the end of your swing. At the point where the coil reverses direction, the detector is most susceptible to trash induced noise. There are ways to tell whether these noises are deep good signals or trash. The first is by repeatability. Trash induced signals will not be repeatable as you swing the coil over the suspected target several times, while a good target response will be repeatable. You may also want to use the Blanker to ignore the surface targets. Another method is to switch to ALL METALS mode and check the target response. If the response is weak it may well be a deep good target, but if it is very strong, it is probably trash.

If the trash in an area is so heavy that you are getting a lot of choppy sounding false signals, you can get better results by slowing down your sweep speed and using shorter sweeps. It is also helpful to hunt areas twice, the second time at right angles to the first time. This will allow detection of some targets that were hidden by trash the first time due to the sweep direction.

If there is any doubt whether a target is good or not, DIG IT.

If you don t dig any junk at all, you are surely passing up good finds too.


NOTE: The search coil must be moving to detect a target using the DISC or NOTCH system. However, the detector operates very efficiently, even at very slow speeds

The DISCRIMINATION MODE is not affected by the ground mineralization, and when used at the beach it will 90 from wet sand to dry and back without changing tune. The DISCRIMINATION MODE 1 recommended for areas d heavy surface trash. Any level in this mode will reject small surface area targets such as wire, nails, tacks and rivets--that to other detectors may look like coins. Larger junk targets are easily identifiable because of their erratic signal or widespread signal area

Often you will receive a signal from a target that is difficult to read to really determine what it is. What may seem to be a bad target because of the signal problem, may be a combination of targets.

Lets take an example: With the detector set in the DISC MODE and DISCRIMINATION level set to reject pull tabs.

With the audio signal produced, at first you may be tempted to pass on and forget It. Don t. A situation like this may be worth an Investigation.

1. Switch to the ALL METALS (VLF) MODE for pinpointing.

2. Sweep the search coil across the target area In both directions to see if you can isolate the signal into more than one target

3. If you do determine that there is more than one target present, try sweeping the coil over it at a more favorable angle in the DISCRIMINATION or NOTCH MODE to get a more reliable reading.


While searching in DISCRIMINATION/NOTCH, an iron bottle cap may blip, but can be identified quite easily.

Once a target signal has been received, take notice of its audio strength and your sweep direction. Now sweep over the same target at 0° to the first sweep and compare the strength to the first response. If the signal diminishes at all, you may leave it for a bad target (iron bottle cap). However, if It remains strong, It is a good target With very little practice, this procedure will become second nature and you will begin to experience the real Joy of using your detector.

Accuracy: Although your detector is very accurate on ending coins it is not perfect. Certain items that may read good on other detectors will also read good on ours. An example of this would be a pull tab that detects like a large gold ring.

Halo Effect: Gold and silver coins don't oxidize much so they have very little halo effect. However, nickels and pennies do oxidize quite a bit and this oxidization surrounds the coin and not only makes the coin appear more conductive It makes the coin appear larger than normal.

Some nails, nuts and bolts and other iron objects (such as old bottle caps), oxidize very much and the halo effect around these Iron objects makes them hard to reject Try sweeping the loop at different directions over the target A good target will have a fairly stable reading whereas a bad target will usually not

Freshly buried coins may not respond exactly the same as coins buried for a long time.




Insensitive detectors are very easy to use. However, you may not find much with them because generally they do not respond to much of anything.

By contrast, the Big Bud Pro is a very sensitive, deep seeking detector. It will loudly respond to many weak signals that most detectors will not even sense, or at best only whisper on; signals that if missed may mean lost valuable treasures.

However, this also means increased response to trash-induced signals and other sources of interference. At first these responses may seem confusing. One key to handling high sensitivity settings is signal repeatability. As you sweep the search coil back and forth over the ground, learn to recognize the difference between the signals that occur at random and signals that are stable and repeatable.

When searching very trashy ground, it is best to scan small areas with slow, short overlapping sweeps.

At first, concentrate your efforts only on the well-defined, easily repeated, stable signals. As you gain proficiency you will then be able to better evaluate the more questionable signal responses.

Some trash Items may have the same detection properties as the coins and rings you are searching for. A metal detector looks at the electrical properties of a target, not at Hs value.

learn to recognize the good" repeatable target signals from the often chopped or non-repeatable signals that may occur when sweeping the search coil over very trashy ground

Check suspect targets from different sweep directions to determine the most reliable reading. When in doubt, recover the target and always check for any additional targets.


PROPER CARE FOR YOUR DETECTOR . . . Metal detectors are sensitive electronic instruments. Although it does not have to be babied, reasonable care must be taken to help ensure a long trouble-free life for your detector.

KEEP IT CLEAN . . . Take a few minutes after each use to remove dirt and dust. Wipe the housing and wash the coil, especially if it has been dipped in saltwater. A plastic bag over the control box at the beach will help protect the unit from sand and prevent corrosion due to salt air.

KEEP IT COOL . . . Never store your detector in an extremely hot environment, such as an automobile thunk in the summer, for extended periods of time. The prolonged heat will not only shorten battery life considerably, but can cause electronic components to break down.

KEEP IT SAFE . . . Never transport your detector in such a manner that will subject it to extreme vibration or shock The unit may be cushioned by wrapping it in a blanket or by putting It in a carrying bag or case designed for that purpose.

COIL . . . The coil is waterproof and may be submerged in either fresh or saltwater. Caution should be exercised to prevent water from entering the

chassis After the coil is used in saltwater, the coil should be rinsed well with fresh water to prevent corrosion of the metal parts.

EARPHONES . . . The use of earphones will benefit you in two ways. Most earphones will very effectively block out most of the ambient noise, such as traffic noises and wind noise, which will enable you to better hear the fainter signals caused by the deeper targets. Secondly, using earphones will greatly extend the battery life, Since it takes much less power to operate them. Any good 8 or 16 ohm set with 1/4 stereo Jack will do.

The following service tips may help if trouble is encountered.

1. The detector will not operate (dead):

a Check battery condition.

b. Check controls for intermittent operation.

c. Check the loop cable connection to case.

2. Erratic Operatlon:

a Check battery condition.

b. Check to see that the loop cable is wrapped snugly around the rod and

properly connected

c SENS set too high.

3. Constant Oscillating Tone:

a This effect can be caused by external electrical sources such as--power

lines, television sets, CB radios and/or other nearby detectors.

4. The detector drifts or slowly changes in tone:

a Sudden temperature changes can cause drift--allow time to stabilize.

b. Component failure can cause rapid steady drift.

5. No sensitivity or poor accuracy

a The DISC Target l.D. modes rely on motion to produce a sufficient signal

for activating these circuits.

b. Heavy mineralization can reduce the accuracy of the TARGET


c. Check battery condition.

Meter needle remains too far down or upscale when unit is turned OFF. This condition may be due to a static charge on the meter face. The charge can be removed by use of a product such as STATIC GUARD and a lint-free lens cloth.

7. One or two hour battery life:

a Use of standard 9 volt general purpose or nickel cadmium batteries may result in very short life and diminished performance.

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