Just recently upgraded to the ETRAC from a Fisher F4 where the signal indication was a 2 digit number, now it's a 4 digit number, when I read all the forums and YouTube videos, every one refers to the 4 digit numbers, 12-48, 13-13, 08-32, just examples, as matter of fact that a 12-?? or a 08-?? or what evr the number wpould be as a Merc Dime or a Rosey or a Gold Ring etc. My question is how dose everyone actually know what the numbers refer to? Is this writted someplace or is it trail and error and if is the latter how do you know if you never found that particular FE-CO series before? I am hoping there is some simple rhyme or reason to help me identify the target refering tto the FE-CO ID I am looking at on the screen.
Thanks
Thanks