Since it's been -28 with the wind chill, I thought I would do a little bench testing with the Ace250. The results will likely be different in the ground, but here are some examples. Sensitivity at five bars in all-metal.
$1.00 1851 = normal tone and Nickel indicator.
$2.50 1855 = normal tone and Pull tab indicator.
$5.00 1906 = normal tone and One Cent indicator.
$10.00 1893 = Bell tone and indicator between One Cent and Dime.
Hope this is helpful. Can't wait for the weather to break and get a chance to actually use my Ace250 in the field.
OldeTymer
$1.00 1851 = normal tone and Nickel indicator.
$2.50 1855 = normal tone and Pull tab indicator.
$5.00 1906 = normal tone and One Cent indicator.
$10.00 1893 = Bell tone and indicator between One Cent and Dime.
Hope this is helpful. Can't wait for the weather to break and get a chance to actually use my Ace250 in the field.
OldeTymer