Fisher F11 - User Manual

Questions and Answers

C
Cameron MorrisonJul 27, 2025
What to do if my Fisher F11 chatters or beeps erratically?
- J
  Jesse McknightJul 27, 2025
  If your Fisher Metal Detector chatters, beeps erratically, or has low sensitivity, here's what to check: * If you are using the detector indoors, use it outdoors only. * If you are near power lines, move away from them. * If there are two detectors in close proximity, keep them at least 6 meters (20’) apart. * If there is environmental electromagnetic interference, reduce the sensitivity until the erratic signals cease.
G
Gloria PhillipsAug 3, 2025
Why does my Fisher F11 display not lock on to one Target-ID?
- M
  Michael OchoaAug 3, 2025
  The display on your Fisher Metal Detector might not lock onto one Target-ID, or the detector may emit multiple tones because: * Multiple targets could be present. Try sweeping the searchcoil at different angles. * The soil could be highly mineralized. Try moving to a different location. * The sensitivity might be set too high. Reduce the sensitivity.
M
millerninaAug 11, 2025
What to do if my Fisher F11 Metal Detector has no power or sounds?
- R
  Robert BrowningAug 11, 2025
  If your Fisher Metal Detector has no power or sounds, it could be due to: * A dead battery. Replace the battery. * A cable that is not connected securely. Check the connections.
C
cfosterAug 18, 2025
How to fix low speaker volume on a Fisher Metal Detector?
- S
  sherry86Aug 18, 2025
  If you're experiencing low speaker volume on your Fisher Metal Detector, consider the following: * The battery may be discharged. Replace it. * You may be using the wrong type of battery. Ensure you are using only a 9Volt alkaline battery.

Summary

ASSEMBLY

BATTERIES

BATTERY LIFE

Expected battery life for alkaline and rechargeable batteries.

BATTERY INDICATOR

Explanation of the battery icon and its segments indicating voltage levels.

QUICK-START DEMONSTRATION

Demonstrate MODES

Demonstration of different search modes and their target tones.

Demonstrate NOTCH Feature

Demonstration of how to use the NOTCH feature to exclude targets.

Demonstrate DEPTH Indicator

Demonstration of the depth indicator bar graph.

Demonstrate PINPOINT feature

Demonstration of the PINPOINT feature for target location.

THE BASICS OF METAL DETECTING

Identifying Buried Objects

Identification of metal objects using conductivity graphic symbols and Target-ID.

EMI (Electromagnetic Interference)

Understanding and reducing interference from electronic devices.

USING THE DETECTOR

OPERATION and CONTROLS

HOW TO WORK THE CONTROLS

THE DISPLAY

OVERLOAD WARNING

Description of the overload warning sound and how to resolve it.

TARGET IDENTIFICATION

How Target-ID indicates detected metal objects.

TARGET IDENTIFICATION Details

Further details on Target-ID, including a table of common coin references.

DEPTH AND TARGET DISPLAY

DEPTH AND TARGET DISPLAY Details

Continued explanation of the depth and target display scale.

CONTROLS

VOLUME

How to adjust the speaker volume level.

SENS (Sensitivity)

How to adjust the detector's sensitivity.

NOTCH

How to accept or reject different types of metals.

PINPOINT

How to activate and use the Pinpoint feature.

PINPOINTING (using a motion detecting mode)

CHARACTERISTICS & LIMITATIONS

TROUBLESHOOTING GUIDE

5-YEAR LIMITED WARRANTY

Fisher F11 Specifications

General

Type	VLF (Very Low Frequency)
Operating Frequency	7.69 kHz
Ground Balance	Preset
Pinpoint Mode	Yes
Length	Adjustable
Audio Tone ID	Yes
Waterproof	Search coil only
Discrimination	Yes
Sensitivity Adjustment	Yes
Audio Output	Speaker
Target ID	Yes
Warranty	5 Year Limited