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<blockquote data-quote="Reg" data-source="post: 158963" data-attributes="member: 3659"><p>The TDI and TDI Pro are fundamentally the same design as the SL and SPP, but use a different pc board that is a little more complex. The fact is, it doesn't need to be and could be modified to be more closely like the SL with no loss of depth.</p><p></p><p>The gain of both the TDI series and the SL series is basically the same, so if all other factors were the same such as batteries, coils, etc, the two should give basically the same results. </p><p></p><p>There is one small change in the SL that enhances small gold that is not in the TDI. Both the standard TDI and the SL series (including the SPP) do have different filtering so the Pro can be swept a little faster. </p><p></p><p>Reg</p></blockquote><p></p>
[QUOTE="Reg, post: 158963, member: 3659"] The TDI and TDI Pro are fundamentally the same design as the SL and SPP, but use a different pc board that is a little more complex. The fact is, it doesn't need to be and could be modified to be more closely like the SL with no loss of depth. The gain of both the TDI series and the SL series is basically the same, so if all other factors were the same such as batteries, coils, etc, the two should give basically the same results. There is one small change in the SL that enhances small gold that is not in the TDI. Both the standard TDI and the SL series (including the SPP) do have different filtering so the Pro can be swept a little faster. Reg [/QUOTE]
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