So there is a used Whites TDI pulsescan detector in my area for sale for $675. It is not an SL so im guessing its an older version. Is there any benefits to owning this detector along with a GPX4800? The price seems good and its close by. Ive also thought i heard that the older TDI were more powerful. I also believe it can use most GPX coils correct?
I dont really need it but it seems like a great price for a PI detector.
I did a coil test some time ago using a Tdi Pro OZ, quite a variety of coils involved. Just a bit of information not wanting it to go to waste.
The test area was located in the middle of the Golden Triangle in Victoria, Australia. Looking at the images the test site is located on a area that produced large nuggets. Heavily mineralized to give the depth tests some authenticity. Targets were varied as were the coils tested. The Tdi Pro was ground balanced, gain was at 5, conductivity was in ALL, pulse delay was 10. Frequency was set in the middle and the audio was boosted by a Nokia MD-11 external speaker. Only clear repeatable signals were recorded.
All targets were buried in the ground sideway from a miners hole, so as not disturb the soil on the surface or above the target. Only the 1 grain ingot and one 0.5 gram gold coin were buried from the surface disturbing the ground.
Not sure how useful this is for Tdi SL users, deduct 10% maybe.. Just gives a sense of what is realistic is this one location at that one time with the Pro with the variety of coils available back then.
All the best, Karelian
By Ridge Runner
I was just wondering if anyone had used that coil? I have the SPP and I have the large DF plus others but inquiring mind wanted to know about it .
At a price they asking it would be in my interest to ask here first.
You may ask do I need it and that answer is no ! I’m like a kid in the candy store are a toy store. I Want !
By Ridge Runner
I see so many people wanting to up the voltage. I know by doing so also improves sensitivity and overall performance.
Maybe someone can tell me why didn’t White’s do the same. My thinking is less load on the electronics makes the detector last longer. At the same time the detector will have a better chance of making it through the warranty .
Here’s another can of worms I’ve opened up.
Hi! after a year of snorkeling with TDI BH I concluded that I can clearly note the sensitivity goes down ones the voltage of my battery pack goes down.
Other conclusion was that even at 12.6V the TDI BH is noisy underwater at maximum settings: it reacts to the waves.
Thus at the moment I really prefer to have just a stabilized battery pack. For my experiment I took a couple of 21700 5aH Li-Ion cells and a dc-dc booster board.
the plan is to get "one hunt" battery pack.