Ground balance and settings on TDI SL

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Digemdeep
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Ground balance and settings on TDI SL

Post by Digemdeep » Mon Jun 26, 2017 3:46 pm

The TDI SL clearly has some unique features and settings, yet some say that it is best used in straight PI mode with no switches, ground balance or pulse delay, particularly on the beach.

If the above is true, then what is the point of paying the extra premium for the TDI SL, over say the Dual Field PI or the Cscope CS4PI? Does it have any advantages?

I am mainly looking for a deep low tide beach hunter



Koala
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Re: Ground balance and settings on TDI SL

Post by Koala » Tue Jun 27, 2017 11:08 am

Over simplified but the general idea is

The detectector sends out a pulse. Switches off then listens for a response.

The smaller the target the quicker this response dies away

The smallest gold nuggets require the detector to listen very close to when its switched off
At these setting the detector will start to see the ground
The ground signal is the subtracted but there are losses in the real signal also


For larger targets its better to listen further away from the switch off point
Here the detector doesn't see the ground
There is no need to subtract the ground signal with its losses

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Rivers rat
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Re: Ground balance and settings on TDI SL

Post by Rivers rat » Tue Jun 27, 2017 12:04 pm

A Goldscan 4 sold last week on the bay that's the kind of machine you are looking for.....DEEPSTAR,Goldscan 5,TDI PULSESCAN,especially if they have been modded with 14.4v battery punching deeper.......an handful of chaps are using them on the coast in France going deeper than sov exca and other VLF but then once again it may be more of a winter machine digging 15" holes under the baking sun on the wet sand is not really pleasant.............

RR
Owner of a Foster PI one of the Enlightened few
Tools of the trade as of 2019: Lobos/Tejon/Silver sabre/GMP/Deus/1266X/F75DST/Xterra 705/ctx 3030/Goldscan g5c/Goldbug pro

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Rivers rat
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Re: Ground balance and settings on TDI SL

Post by Rivers rat » Tue Jun 27, 2017 12:19 pm

I RECOMMEND:

Pulsepower!”: Finding Gold at the Shore with a Pulse Induction Meta"l book

rr
Owner of a Foster PI one of the Enlightened few
Tools of the trade as of 2019: Lobos/Tejon/Silver sabre/GMP/Deus/1266X/F75DST/Xterra 705/ctx 3030/Goldscan g5c/Goldbug pro

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