WHITES GMT Goldmaster information and questions

[karelian65]

Kicksome, try and give yourself some time to get used to the machine. All VLF machines are 'noisy' in highly mineralized soil. The GMT is a small gold specialist. Gold in crevices, tailing heaps etc. It will not punch down deep like PI and it will sound off on hot rocks, cold rocks, iron stone etc. Key is to 'balance the machine. What I mean is there is a spot in the setup balancing the ground, just enough gain , SAT, sweep speed etc to best match the conditions where you are hunting. You can run the machine smooth and quiet by lowering the gain, or go hard and run it hot. Smooth and quiet is best in the long run, I only run hot to check a spot that has already produced gold since is is noisy and difficult to maintain focus running hot. Set the machine up to run as quiet as possible to begin with until you have more hours of experience. Check out some to the GMT videos online for hints etc. The GMT is a great VLF but personally that 48 khz runs too noisy for me, that is why I went with the MXT, after comparing both. At 14 khz the MXT does not have that deadly small gold ability that the GMT has but it runs smoother with decent ability, my opinion only.
The GMT user really needs to read 'The Complete Unabridged Zip Zip' book by Larry Sallee, an excellent read which makes you a better prospector regardless of which machine you swing. Yes I do have the book and I live in Melbourne, send me a snail mail address via PM and I can arrange for you to read a copy. If after roughly a hundred hours, or when you feel you really know the machine then maybe you can make an educated decision about the GMT. Many people use a PI but keep a VLF for backup, it has its uses but in hot ground VLF's are much more difficult and in really hot ground can drive you nuts..
All the best,
Karelian

 

[kicksome]

Thankyou Karelian for the nice reply, and thanks for the offer of the zip zip boo I'll try and find it first before I resort to snail mail
Indeed I need to send a lot more time with the machine and how to learn it. I'll go with what you say and try to run it as quiet as possible, I've been on the other side of the spectrum and running it hot for more sensitivity and depth. Which is really just probably confusing me more.
At least now I have a good little sample of gold I can take out with me and put it a couple inches down and setup the machine to bet suit those conditions.
In saying all this I might just keep some money aside for a PI machine just incase. Just seen an sdc2300 for 1800 on Gumtree, good little machine for a noob like me

 

[Colour]

Had one, it's sensitive but very noisy, also susceptible to EMI. One mistake I made is I used a smaller coil too much, if you have one, just use the stock coil. If meteorite hunting, use the 14" elip.

 

[Ridge Runner]

The GMT is a hot one for sure but with the right coil the MXT will see bits easily down to 0.006 grams and smaller if they are on the surface, trouble with hitting targets that size is finding them which is a lot of time wasted,