Re: precession frequency?

[Mariusz]

>The main problem with this design is PCB layout. If not designed properly, the crosstalks and noises spoil its performance and force to limit gain in preamplifier stage (that certainly influence the depth more than the coil current).


So is there any way to improve PCB ? If not then I'll start building Buccaro, what do you think is it worth to try ?

[Mariusz]

Re: pi metal detector Proscan & Buccaro

>The main problem with this design is PCB layout. If not designed properly, the crosstalks and noises spoil its performance and force to limit gain in preamplifier stage (that certainly influence the depth more than the coil current).


So is there any way to improve PCB ? If not then I'll start building Buccaro, what do you think is it worth to try ?

[Lee Fraser]

Re: precession frequency?

The factor that includes the gyromagnetic ratio of the proton is 23.4874


+/- 0.0018 nT/Hz. Simply take the frequency reading obtained from the


magnetometer and multiply it by this value to obtain the field strengh in


nanotelsas. Value is from Telford et al "Applied Geophysics".


Hope this is of some help to you!