TDI SL Question

[Slimpickins]

I've been using a DFX since 2003. Most times on the beach due to low mineralization it would not GB and still find an occasional hot rock mostly while detecting Cape Cod Bay. It's time for a P.I. for much greater depth on the wet sand. I'm leaning towards the Whites TDI SL even though it's not waterproof. If I am understanding correctly when it is ground balanced it will ignore iron, foil and some "hot rocks". If I'm at the same beach where the DFX would not ground balance can I manually ground balance the TDI so that it will disc. iron,foil and "hot rocks". I have seen videos of the TDI on the beach with the pulse set to 10 yet on the knob there is a higher setting probably around 17 for wet salt sand. Wouldn't that a better setting or would it not find smaller Gold jewelry? If the GB is "off" will it get max. depth at max. Gain but respond to all targets? The DFX has served me well but is limited in depth especially at the beach for certain Gold items. With a Stealth 720i scoop and the TDI SL I think I would do better at the beach. I was also considering an Excaliber 1000 but on the outer beach the wave height and undertow would not be much fun dealing with. I was also thinking about the Tesoro "Sand Shark" but it seems that it doesn't find targets at the depth that the TDI does although it's half the price and waterproof. I have on two occassions chatted with another beach hunter who was using some chestmounted Mine

 

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[Johnnoh]

OK, I'll bite.

You will definitely loose depth with the GB circuit on. Being from MA, you probably won't need GB for what its original intent was. You can however tune the TDI SL so it sees small iron and aluminum as part of the ground, but you will loose nickles and unfortunately small gold. There is a pretty good field guide that explains this much better than I can - available here: http://www.whiteselectronics.com/media/downloadable/files/samples/t/d/tdi_field_manual.pdf

The TDI Sl is very stable on a salt beach, but do not expect more than 6-7" if you are running GB. If you feel like crossing the border we can meet up and I can show you how it works. I only have 30-40 hours on mine and I'm still learning. It can get discouraging if you're hunting in high trash and I would recommend a multi-frequency VLF (like your DFX) for that purpose. If your DFX has a salt program I would stick with that on the beaches.