oldtimerROB said:
The AU looks like an old design setup and may be a bit nose heavy. It would need to be light like the Gold Bug 2 to compensate for this.Knobs are not as accurate as the 0-100 digital settings which the Impact/ Racer 2 have.It the AU hasn't got a deep disc. mode and only an all metal mode,it won,t keep up remotely with the the PI,s for going deep. Saw some comments about Racer Gold users unable to handle the Central Victorian hot ground and no idea why.Amazes me that some people do little research before buying a detector and are not acquainted with local conditions.So yes they are next to useless here in most areas.They need to go where the quartz is milky white indicating little iron in the ground.
0-100 is way better than 0-30 or 0-50 But rotary controls are infinitely variable so rotary controls would have a slight advantage,
There is no reason why a VLF should have a "Deep" mode it should run in Deep all the time, for a simple reason,,, VLF's have awesome power but throw in some mineralization and they loose depth quickly, "Deep" on a PI is a great function to have because the nature of how they work and the fact is they more often than "NOT" have too much power.
Here is what you posted on your depth test thread on a coke can, where you had your machine set to 70% Gain setting using the standard mode/s.
Quote,
"I am getting the ball rolling by including my results- Nokta Impact, all metal mode 12 to 15 inches,loud to good signal."
Doing the same test when set to the "ABSOLUTELY" lowest possible setting I get 55cm/21.65" and if I listen for a faint signal then that depth goes even higher, But when you compare the two machines using the above settings there is a 9.65 to 6.65" difference using your depth figures when yours is set to 70% and mine is set to "0" ( ZERO ) and the more I turn it up the more that difference grows.
The AU Goldfinder does not need the "Deep" mode because it is set up to provide maximum depth even at the lowest settings, because prospectors want/need maximum depth at all times when using VLF's. So having that Deep mode creates false hope that you are getting something special, I will tell you now! That even in the deep mode it ain't worth $hite and lacks power.
You need to stop making comparisons with the Impact with "Known" Proven Gold machines because they have nothing to prove, And most of them Won out 15 to 20 years ago and they will kick the Impacts Ass,
Give it up, again it's a good multipurpose machine and nothing more, If you like that's all that matters, So for gods sake please stop posting pages of unresearched unproven Dribble.