I posted previously that in an air test, the single tone(center trigger position) tested deeper considerably than the audio ID
(trigger forward)... In ground, actually usage, shows that there is NO difference in depth at all in either position....... I don't know why the inconsistency with the air test but ......... Best to all, RichardnTn
(trigger forward)... In ground, actually usage, shows that there is NO difference in depth at all in either position....... I don't know why the inconsistency with the air test but ......... Best to all, RichardnTn