hageneyr
Jr. Member
- Aug 25, 2017
- 51
- 213
- Detector(s) used
- Garrett AT Pro
- Primary Interest:
- All Treasure Hunting
If i see a 14 im thinking tab for sure but am pleasantly surprised 1 out of 50 times!
the plat was higher than I expected but since I have never found one, I don't have a clue
The VDI of 4-5 thru me off a bit, I'll pay more attention to those. Welcome information "hageneyr" Thank you.
Oh yeah, thin gold can def ring up down there. The TID is a function of the metal composition/purity (which affects specific conductivity), total metal mass, shape, the presence of a continuous conductive circuit (closed vs. open loops) and thickness of the of the metal (e.g., thin rings have greater resistance to induced currents created by the coil's magnetic field). The irregular shape, discontinuous loop conductivity circuit, and thickness effects dominate even high metal mass gold chains which drives their TIDs to very low numbers. Metals of lower specific conductivity such as gold, lead, and aluminum are more highly affected by these factors than high conductors like pure copper and silver. The detector (via the coil receive windings) is looking for a high strength (the field strength is a function of the conductivity factors I mentioned previously and transmit frequency), symmetric (ideally donut-shaped indicating a probable coin) magnetic field that is created by the current induced in the conductive target by the magnetic field created by the transmit coil windings.
Congrats on the finds & thank You for sharing VDI #s.
They should be helpful.
Now that's a mouth full. I'll have to read this a couple more times to fully understand.