This thread is open again for posting, please keep the discussion friendly.
What's D&P?Ridge Runner said:Well there are some good tips over on D&P
J.
Ridge Runner said:Well there are some good tips over on D&P
J.
Heatho said:AEGPF said:Interesting video on the gold monster.
https://www.youtube.com/watch?v=qSH3-Sf4IHc
AussieSteve said:GM1000 observations:
Doesnt like salinity (wet sand)...
...Most comfortable detecting depth 3-5cm (the sand was wetter under that depth so this may have been a limiter)...
grubstake said:AussieSteve said:GM1000 observations:
Doesnt like salinity (wet sand)...
...Most comfortable detecting depth 3-5cm (the sand was wetter under that depth so this may have been a limiter)...
Salinity is a special and difficult case for any single frequency VLF detector. To handle it successfully, they need to have a wide ground balance range ("balances all the way to salt", as Fisher Research labs put it), but still be able to cope with whatever mineralisation is present, while maintaining sensitivity to all metallic targets - it's a big ask! So at best, a single frequency VLF will lose some sensitivity in saline conditions, at worst it will be so noisy as to be almost inoperable.
The Whites Visual Display Indicator (VDI) scale below, is based on salt as zero (0), with ground balance mineralisation shown as negative numbers on the scale. As it also illustrates, some very desirable targets (eg. small nuggets and small gold jewellery), fall close to or within the salinity range!
https://www.prospectingaustralia.com/forum/img/member-images/4012/1500852590_mx5_vdi_1.jpg
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