Stubblefield coils (bifilar) and speculations

[Pirate88179]

Here is a calculator that will tell you all sorts of info for your area including magnetic deviation and dip angle:

http://www.ngdc.noaa.gov/geomagmodels/IGRFWMM.jsp

I used 2 carbon rods because when it was one carbon rod (18" long) I could not get it deep enough in the ground to use most of the surface area so I cut it.  I did various tests and found that keeping the second rod along the same meridian alignment (not magnetic north/south) separated by about 5 feet increased my output.  I have a single 5 pound block of mag. on the south end.

There is much more detailed info about my set-up discussed here on this topic and on Localjoe's topic.

Bill

[dllabarre]

How are your 3 wired?
2 carbon rods wired together for the positive and 1 wire from the magnesium block for the negative?

Also I can't get a Frequency reading on my earth battery.  Is this normal?  The frequency keeps jumping around on my meter.
I verified my meter is OK by checking MAINS frequency at 60 Hz.

DonL

[Pirate88179]

How are your 3 wired?
2 carbon rods wired together for the positive and 1 wire from the magnesium block for the negative?

Also I can't get a Frequency reading on my earth battery.  Is this normal?  The frequency keeps jumping around on my meter.
I verified my meter is OK by checking MAINS frequency at 60 Hz.

DonL

Don:

Here is an older video that I will re-post here:

http://www.youtube.com/watch?v=A4gRDwPqSz4

In this video I am only lighting 4 10mm superbright leds but you can see how it is wired up.  The two carbon rods are tied together with test leads and the load is wired from them on the + side to the - on the load to my magnesium block.  Check out some of my other videos, especially the newer ones, to see what I am able to light up and run now.

As far as your meter not reading the freq.  I can't say.  Possibly the changes are too fast and or the freq. is too high for that meter.  I am only now getting used to using my scope so maybe one of the other electronics folks here can help.  I suspect the meter was designed to read in the range of 60 Hz give or take, and we have been seeing some wild stuff on the scopes that may be driving your meter crazy.  I am just guessing here.

Bill

[jeanna]

Hi everyone.
This is dataloging but it is Stubblefield and I do not want to complicate the datalogging thread with un-plain things, so I am posting them here.

The ground is drying. One of these has 0.28vdc but it has plenty of the activity I saw with moist ground.

6 pix follow.
I will put them together for comparison so notice the caption says "both" at the end of its name when both NS coils are connected, otherwise just the one on the south is and the north is just the carbon rods.

jeanna

[dllabarre]

Don:
I suspect the meter was designed to read in the range of 60 Hz give or take, and we have been seeing some wild stuff on the scopes that may be driving your meter crazy.  I am just guessing here.
Bill

The meter is supposed to be able to read 5Hz to 10mHz.  It just kept bouncing around between low Hz numbers to kHz numbers.


That website states my inclination is 68 degrees 45'.
Does that mean i have to lower the bottom of my + northern rod 68 degrees lower then the bottom of my - southern rod?
But at what distance between the rods?  45'?
Their FAQ help isn't very helpful 


I'll take a look at your videos.
Thanks

DonL