How to choose a Nexus metal detector search coil
The following are general recommendations, not the only search coils which will work for a specific purpose.
Depth / Unmasking
As a general rule low frequencies are recommended for depth, high frequencies for unmasking.
SEARCH AREAS
Ploughed fields
- 10-13 inch DD
- Dual 12 inch and larger dual search coils (any frequency)
Grass Meadow
- Low grass: 13 inch DD or larger (any frequency).
- High grass: 12 inch dual or larger (5.7 kHz).
Beach
Park
- 10 inch DD (18 kHz)
- 9 or 11.5 inch Silver Scout (24 kHz).
Woodland
10 inch - 13 inch DD or dual 12 inch and larger dual coils (low frequency eg.10 kHz).
SEARCH CONDITIONS
Highly mineralized
- Low frequency 13 inch DD (10 kHz)
- Larger low frequency search coil such as dual 12 inch (5.7 kHz).
Highly conductive
- Low frequency search coils only. (5 kHz - 10 kHz)
Trashy sites
- 9 inch, 11.5 inch, 16 inch Silver scout (24 kHz). Silverscout series as first choice.
- 10 inch DD (18 kHz).
Wet / Muddy soil
DD, low frequency.
SPECIFIC TARGETS
Artefacts, and relics
- Low frequency coils. 13, 16 & 20 inch DD.
- Dual 12 inch or larger dual search coils.
Hoards
Dual 12 inch (5.7 kHz) or larger size.
Hammered Silver
- 9 or 11.5 inch Silver Scout (24 kHz)
- 10 inch DD (18 kHz).
Gold coins and gold nuggets
- 9 inch or 11.5 inch Silver Scout search coil (24 kHz)
- 10 inch DD (18 kHz)
SPECIAL PURPOSES
Unmasking
The search coils recommended for unmasking also have good depth.
- 9 inch,11.5 inch, 16 inch Silver Scout search coil (24 kHz)
- 10 inch DD (18 kHz)
- 7 inch DD (24 kHz)
Very deep targets
- 16 or 20 inch DD (5.7 kHz)
- Dual 12 inch (5.7 kHz) + larger search coils.
Note:
For the LC-MC control to show Green color for low conductors, a 10 kHz or higher is required.
Nexus Metal Detectors
