GT Disc / Notch

[meggie]

Ive read many times about these settings for my Sovereign GT.Most users,in fact nearly all,will tell you to leave them at the lowest possible setting.
Do any owners use these controls?If so would you care to enlighten me on how and why.I'm keen to learn..

Thanks in advance...Meggie ....

 

[gear box]

Using notch can eliminate some gold. I hunt inland at park's,schools, churches,etc. where finding gold is a rare thing. So I have used it on occasion to notch out tab's especially at fairground's. It quiet's down the machine tremendously so you can concentrate on the good signal's. Last fall I picked out two Barber dimes while using notch. It can be useful but I wouldn't use it at every spot though.

Good Hunting,Gary

 

[kered]

Disc is a continuous discrimination and anything below the setting will be rejected.
Notch is like a pie cut into sections, you can only discriminate one section at a time of your choice but continuously variable, handy if you are getting lots of a particular item that you wish to reject without rejecting all up till, i have at times used the notch on a part of the beach with absolute loads of a particular pulltab(after a beach party) when looking for fresh coins, to the peril of maybe losing the odd gold ring

 

[Critterhunter]

Read my thread called something like "Splitting Hairs On Ring VDI Numbers". It covers many of the disc/notch questions and the great debate over them. In general, if I'm old coin hunting I don't use any disc or notch. However, if I'm ring hunting I'll run them both at specific settings (up to 90 for disc killing most foil and aluminum bits of junk, 152.5 to 165 for the notch killing about 84% of all tabs). I only do that if the trash is real thick. Not only will it allow you to still recover the majority of gold rings, it will quiet the machine down and so give you more time to concentrate on anything else that sounds off. You can also go the other route, using no notch or disc but using your ear and a "mental" notch. If you find one or two particular numbers tabs at that site keep popping up at then avoid them in your head and dig everything else, or at least anything that seems solid and "smoother" sounding than trash. Gold rings will tend to lock on to 1 (2 or 3 at the most) number and have a nice soft, smooth, warm sound to them. If the target changes greatly in numbers from two directions 90 degrees from each other it's probably not uniform in shape and thus is trash, where as a ring being round will mostly stick to 1 number or maybe 2 or 3.