Whats the deal with this reverse coil business

[49er12]

Any legitimate information about this, I just started reading g about it, upside down coil.

 

[DizzyDigger]

Apparently, when you change the coil's orientation the transmit/receive field also changes.

Google "reverse coil metal detector" and check out the Fbook page.

 

[Terry Soloman]

Complete

 

[49er12]

I mean if this was significant im sure even by accident or flubbing around someone would have mentioned it by now, I guess

 

[DizzyDigger]

The horizontal orientation of a loop antenna (coil) is not relevant to it's radiated pattern.

From: https://en.wikipedia.org/wiki/Loop_antenna

"Unlike a dipole antenna, the polarization of a resonant loop antenna is not obvious from the orientation of the loop itself, but depends on the placement of its feedpoint. [e] If a vertically oriented loop is fed at the bottom, then its radiation will be horizontally polarized; feeding it from the side will make it vertically polarized. "