Hotrock Posted February 23, 2015 Share Posted February 23, 2015 I haven't read or been reading any patents. Link to comment Share on other sites More sharing options...
doc holiday Posted February 23, 2015 Share Posted February 23, 2015 Steve with Carl going to First Texas back in the spring/summer of 14, how do you see this impacting FT and Whites? Link to comment Share on other sites More sharing options...
Steve Herschbach Posted February 23, 2015 Share Posted February 23, 2015 Bad for White's, good for First Texas. I would love to see First Texas introduce something that would rock the prospecting world. Minelab could use some stiff competition. To put it in perspective however Minelab could dust off the old SD2200v2 and release it again and have an entry level PI as good or better than what the competition offers. Instead of others catching up Minelab seems to be consolidating its technological lead. 1 Link to comment Share on other sites More sharing options...
Tom Harris Posted February 24, 2015 Share Posted February 24, 2015 When I watched the introductory video, there were two spots were they implied that the GPZ is not a PI. At the 51/2 or so minute mark the moderator says in highly mineralized ground the GPZ is much better than a PI. I'm like you Steve, my eyes glaze over when I read the technical stuff but it sounds like this is new tech or a hybrid of some sort. Link to comment Share on other sites More sharing options...
Reg Posted February 27, 2015 Share Posted February 27, 2015 Jasong, FYI, the super DD coil was originally called the DOD coil when proposed by a guy in 2011 who went by the handle mikebg. A pic of the coil in jpeg can be seen on the geotech1 forum. Here is a link to it. http://www.geotech1.com/forums/showthread.php?18469-Hammerhead-modded-vs-sd2000-series&highlight=mikebg+dod+coil Just drop down to mikebg's post and click on the DOD jpg pic. Reg Link to comment Share on other sites More sharing options...
jasong Posted February 27, 2015 Author Share Posted February 27, 2015 Thanks for the link Reg, I'll have to register there when I get off my phone, forgot my login. Link to comment Share on other sites More sharing options...
Reg Posted February 27, 2015 Share Posted February 27, 2015 Jason, Here is the pic mikebg posted in 2011. This idea can be traced back to 2008 when mikebg posted something almost identical. Depending upon the polarity of the to receive windings, they could be both ground and noise canceling. On level ground, this could allow the gain to be increased dramatically with the limit almost dependent upon internal noise. Reg 1 Link to comment Share on other sites More sharing options...
Hotrock Posted February 27, 2015 Share Posted February 27, 2015 Question? How do you change the recieve wave polarity, when the transmitter sets the polarity? Link to comment Share on other sites More sharing options...
Reg Posted February 28, 2015 Share Posted February 28, 2015 Changing polarity on a receive winding is simple. Lift the receive winding up and flip it over. So, if you look at the pic above, then lift the top blue winding up and simply flip the receive winding so the right side of the winding is now on the left side and visa versa. We could call this a half twist also. The result is the top of the winding becomes the bottom, but fits the same. On a conventional DD coil, you could make a coil with inverted signals. This works on some PI's but not all. The TDI may not work or work right with this coil. Reg Link to comment Share on other sites More sharing options...
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