Like most questions on the various forums, this is another that really asks for more personal opinion, and also needs to be considered for the type of hunting or site worked.
canes12 said:
Is performance improved by using D2 vs D3 or D4 tones ?
Some readers aren't familiar with the Omega's Tone ID options so, if you don't mind, I'll add just a little comment here in answering.
First, a reminder. The number of audio tones you will hear is not simply a matter of Tone ID selection, it is also governed by the Discrimination level used or some Notch Discriminate choices.
The tones are identified on the display as: d1, d2, d3 and d4.
At turn-on, the Omega is set to operate in the
d3, or 3-Tone, audio ID. It
will,
if the Discrimination level is set somewhere below '40.' The lowest audio tone is a low, bass-like audio for most Iron [size=small](ferrous)[/size] targets that have a VDI reading of '40' or below. If you reject Iron, then you will only get a 2-tone audio,
but don't confuse this with the d2 Tone ID choice.
If you increase the Discrimination to the maximum setting of '80', and reject most screw caps and zinc cents, you will knock out the middle tone and only get 1-tone.
But, don't confuse this with the d1 Tone ID choice..
If the Discrimination is set at the minimum setting of number '1', then you will get 3 Tones. Low for most Iron targets. A Middle tone for foil, nickels, pull tabs, screw caps and zinc cents. And High tone for the better copper cents, and clad and silver dimes, quarters halves and dollars, plus the newer dollar coins.
[size=small](NOTE: I qualified "better" copper cents because most Indian Head's, and many early mintage Wheat-back cents from 1909 to