- Apr 18, 2016
- 5,300
- 11,756
- 🥇 Banner finds
- 2
- Detector(s) used
- XP DEUS II ,XP DEUS, EQUINOX 800, EXCALIBUR II,
- Primary Interest:
- All Treasure Hunting
check this out and see which one you think does better.
Agreed 100%.....although a few months ago I did not, until I tested my 9 round vs 9 elyptical.From a pure science point of view the 9" elliptical DD should not physically separate any better than the 9" DD round at a given common frequency because the separation ability is determined by the width of the spine of the coil where two D-coil s intersect which creates the active field that penetrates the ground. The elliptical will suffer slightly in depth vs. the round because the field strength is lower due to the elliptical design. I think both of these scientific theory statements (which were the source of some online disagreements) are borne out by your tests which I am glad you conducted. Note that the elliptical still has two advantages over the round, the first being the elliptical shape makes it easier to use in tight quarters such as a cellar hole or pit and the second is the higher operating frequency than the round will make it killer on really small gold (though it won't go that deep) and the higher frequency ultimately will give it better separation than the round on very shallow masked targets (also borne out on your video test as the elliptical separated better at the mid HF frequency of 26 khz, though you did not run both coils all the way up to their max frequencies - you might try to run the elevated nail unmasking test at the highest frequency as a sequel video just to see what happens). Thanks CD.
This is an eye opener for me! I have been using both HF coils and most recently focused on the Elliptical. Now I like to run in 74kHz Frequency with the deepest settings and have gotten some impressive depths. I thought that the depth was better with the Elliptical Coil running on 74kHz Frequency than the 9" Coil running on 54kHz Frequency with the same deep settings. I guess I'm totally wrong? I am going to switch back to the 9" HF and use Pitch tones to get some better depth than the Elliptical at the highest frequency. Awesome video.
At these frequencies, detection depth is a function of conductivity of the target. Theoretically, the detection depth of high conductors like silver will actually decrease with increasing frequency as demonstrated in CD's video tests. However, small mid-conductors such as brass and small gold jewelry may be more detectable at the higher frequencies making the elliptical deeper for those types of targets because of its higher operating frequency
I have witnessed the mid conducters hitting better with the higher freq myself..even though I will probably never run over 28 for relics.