in need of your advise

[wubian]

Greeting every Pro

sorry for my poor english. after several days of searching and reading the topics and getting help from some good people on other site, now i need your advise.

first sorry if i post in wrong place.

i saw something that it name is PDK or PD. it think this is for "morgan" and "geo".

as my english is very poor and it hard for me to find my answer by myself, so could i ask every body who know this device to give me some information?

1- how deep this device can detect gold or other metal?

2 - does this device can detect only gold or detect every metal?

3 - what is the best PDK till now that already developed?

4 - how and where could i find the schematic and pcb of number 3?

5 * - please pardon me with your kind heart... if no body help me i will grope around in your forum

regards