Hi Garry, threshold is used for when your in the GEN mode on the Fors Gold. This sets the threshold for better use of the detectors sensitivity to all metals. When its set in the GEN mode, you'll hear the background hum and have full control over its strength as now it will be highlighted in the menu system, allowing you to turn it up or down.
When your in one of the other modes...BST =2tone.....DI3=3tone, the threshold will not be available in the menu to adjust....its only available when your in the GEN mode.
Most VLF detectors will have whats called an ALL METAL MODE...the Fors Gold calls this setting...GEN.
When your in one of the other modes...BST =2tone.....DI3=3tone, the threshold will not be available in the menu to adjust....its only available when your in the GEN mode.
Most VLF detectors will have whats called an ALL METAL MODE...the Fors Gold calls this setting...GEN.