Fisher F5
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2026/07/28
About
The F5 was Fisher's analog-feel machine with a digital readout: 7.8 kHz, manual ground balance you could set by ear, a proper ground phase display and separate controls for sensitivity, discrimination and threshold rather than a menu. Relic hunters liked it because it let you work by audio and use the screen only to confirm. It takes the standard Fisher and Teknetics coil fitment, so aftermarket options from Mars and others fit it directly.