Fisher Research Labs F75 Comprehensive Operating Manual & Manual
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Fisher Research Labs F75 Comprehensive Operating Manual & Manual

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F75
Comprehensive Operating Manual & Guide to Metal Detecting
ACCESSORIES
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
Stereo Headphones
Use with Fisher metal detectors. Lightweight and adjustable with
true stereo sound, adjustable volume, 1/8 jack with 1/4 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% white cotton with Fisher
Logo. Sizes – S, M, LG, XL & XXL. FTSHIRT
Replacement/Accessory Searchcoils
15" DD Round Open Coil – 15COIL-F75
11" Biaxial Replacement Coil – 11COIL-F75
10" Concentric Accessory Coil – 10COIL-F70
6.5" Concentric Accessory Coil – 6COIL-E
5" Biaxial Accessory Coil - 5COIL-F75
Coil Covers
Specially made to protect your coil from abrasion and damage.
15" DD Round Open Coil Cover – 15COVER-F75
11" Biaxial Replacement Coil Cover – COVER-11DD
10" Concentric Accessory Coil Cover – F70COVER
6.5" Concentric Accessory Coil Cover- 6COVER-E
5" Biaxial Accessory Coil Cover - 5COVER-CZ3
Neoprene Face Rain Cover
Specially designed to protect your detector from dirt and water - FACE-COVER
Gold
Prospecting Kits
FOR COMPLETE DETAILS VISIT WWW.FISHERLAB.COM • 1-800-685-5050
M75
.
PCH-F
–
Rev.5
110614
Metal Detector
Comprehensive Operating Manual
& Guide to Metal Detecting
Better performance in High-E.M.I. environments.
Even better target separation!

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Summary of Contents for Fisher Research Labs F75

  • Page 1 5” Biaxial Accessory Coil - 5COIL-F75 Coil Covers Specially made to protect your coil from abrasion and damage. 15” DD Round Open Coil Cover – 15COVER-F75 11” Biaxial Replacement Coil Cover – COVER-11DD 10” Concentric Accessory Coil Cover – F70COVER 6.5”...
  • Page 2 Comprehensive Operating Manual & Guide to Metal Detecting 5-Year Limited Warranty he F75 is a multipurpose metal detector. Its most popular uses are coinshooting and relic hunting, and it is also well-suited to gold prospecting. Register your warranty on-line for a chance to win a FREE DETECTOR.

  • Page 3: Table Of Contents

    Introduction to the F75 General information ........10 Controls .

  • Page 4: Specifications

    5.2 foot-pounds (7.1 newton-meters). Salt water is highly conductive, and produces a strong signal which is like that of metal. The F75 is not specifically designed for high performance in salt water, but can be used in this Operating Principle: VLF induction balance environment.

  • Page 5: Quick-Start

    If you can get On start-up, the F75 will display its 10-digit serial number, two digits at a time. The 10- copies of old newspaper stories about the circumstances digit serial number is unique to each detector.
  • Page 6 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Caution: Forcing in MIDDLE STEM with CAM LOCK raised may form a burr on camlock. If this happens, remove burr with knife to allow insertion. Assembly Detecting Activities (continued) Battery Compartment...

  • Page 7: Assembly Instructions

    Wind the CABLE securely around the STEMS. The ground balancing and Fe bar graph features of the F75 can be used to map the soils 11 Connect CABLE PLUG to housing. of a site. In this way you might determine which areas have been dug, backfilled, or subjected Do not twist the Cable or Plug.

  • Page 8: Mechanicals

    B TTERIES (not included) Relic hunting is searching for historical artifacts. The The F75 requires four AA batteries. These non-rechargeable chemistries may be used: Alkaline, Nickel Oxy-Hydroxide most common desired objects are battlefield debris, coins, (Panasonic Oxyride or Duracel PowerPix), lithium iron disulfide (Energizer L91) or jewelry, harness hardware, metal buttons, trade tokens, Nickel metal hydride chemistries may also be used.

  • Page 9: Using Headphones (Not Included)

    HE DPHONES (not included) especially pieces of metal or glass that could endanger a child at The F75 is equipped with a standard 1/4-inch stereo headphone jack at the rear of the unit, play. Be proficient at recovering targets without causing located under the elbow as you hold the detector for use.

  • Page 10: Introduction To The F75 General Information

    Target-ID considered essential in searching for coins. The F75 operates at 13 kHz for good sensitivity to gold nuggets and jewelry as well as to Tips on ground balancing coins.

  • Page 11: Controls

    In that case, you can revert to the rule of thumb -- “don’t dig non-repeatable signals”. Using the sensitivity control When the F75 is first turned on, the Sensitivity is at a medium setting appropriate for most coinshooting. For relic hunting or gold prospecting, higher Sensitivity settings are usually preferred.
  • Page 12 Rotate the SETTINGS knob to: The F75 allows you to shift operating frequencies to avoid electrical interference. See the 1. Change the setting (or value) of the highlighted menu selection you have chosen.

  • Page 13: Menu System

    ID numbers will be greater than 12. adjust frequently. The F75 has a tendency to up-average nonferrous targets in the proximity of iron, indicating ID numbers higher than would be obtained in an air test. This tendency is connected with the F75’s enhanced see-through ability –...

  • Page 14: Ground Balancing

    Ground Balance setting. If the detector’s internal computer is unable to When you turn the F75 on, the ground balance setting is preset to give a positive response on Pinpointing With the Trigger Switch • If the message OVERLOAD RAISE COIL –...
  • Page 15 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Capabilities And Limitations (continued) Ground Balancing (continued) The range of ground balance settings indicated on the display range from 0 to 99; however, STEEL BOTTLE CAPS & FLAT IRON TRASH each displayed number spans 5 detent steps on the settings knob.

  • Page 16: Dst Mode

    DST status is saved to memory after the user performs this procedure. narrow their sweep and loiter over the top of the target. The F75 is different. The F75's quick Each time the detector is powered back on, it will continue in the programmed setting.

  • Page 17: Motion All Metal Mode

    The Motion All Metal Mode is more sensitive and offers better feel than the Discrimination The F75 can detect U.S. coins to a depth of up to 15-16 inches (37-40cm) under good Mode, and is used to find all metal objects present in the ground. The searchcoil must be in DEPTH conditions.

  • Page 18: Static All Metal Mode

    If you suspect electrical interference, The four adjustments are performed the same as with MOTION All Metal Mode, as described you may change the F75’s operating frequency. This is a trial and error method to try to find a on the preceding page.

  • Page 19: Discrimination Mode

    In older systems, the apparent sensitivity decreases as discrimination level increases. The F75’s G.B.
  • Page 20 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Discrimination Mode (continued) LCD Visual Display (continued) Since different metal objects can produce similar signals, and since minerals in the soil can Notch Unlike Discrimination Level, which eliminates all targets from the left of the scale to the right, distort the signals, the probable Target-ID's are just that -- probable.

  • Page 21: Lcd Visual Display

    Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting LCD Visual Display Discrimination Mode (continued) Using DISC LEVEL in conjunction with NOTCH gives you a great deal of flexibility in deciding In normal operation, when the searchcoil passes over a metal object, the electrical signature which values to include or exclude from detection.

  • Page 22: Pinpoint Feature

    Target-ID and audible response. By making the audio and visual systems independent, the F75 allows each system to do what it does best. The audio is optimized for quick response and target feel, whereas the visual system provides the best...

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