Well Rizsieblue, please be aware that in Gold nugget areas the detectors you'll
be using will be of 2 types:
>1. VLF or
>2. Pulse
The VLF will work pretty well in Australia and will be most effective in All Metal mode
with best choices being:
Fisher Gold Bug 2
Tesoro Lobo SuperTraq
Garrett Scorpion
Whites GMT
Pulse units:
Garrett Infinium
MineLab Sovereign series
When VLF's (3 to 30kHz) were invented back in the 70's they enabled prospectors to finally be
able to penetrate deeply and ground adjust the ironized soils usually found in Gold areas. Many
nuggets were found by these units in Australia & America and can still be pretty effective today..
With the newer Pulse units it's possible to find Gold even more deeply in mineralized soils
and are the now preferred unit of choice in those areas since All Metal is how they work and
all metal is the mode of choice for native gold.
So you have various choices from the above, depending on your budget, with the Pulse units
being more costly than the VLF's.
With VLF's take note that they can also have discrimination modes for coinshooting too
in other areas away from the Gold fields so are more versatile over Pulse units which are
not good discriminators as yet (research is ongoing to change that).
The VLF in higher frequencies (15 to 71 kHz) is more effective for smaller Gold at shallower
depths, while lower freq's (3 to 15 kHz) are somewhat better for larger nuggets at deeper
depths. So as always, the choice is yours.
Good Luck in all your searches!
..W