Stubblefield coils (bifilar) and speculations

[1tesla01]

hummmm............... large diameter wires ******************strawberry fields for ever******** L.O.L.This makes sense because huge coils are low frequency, Antennas built right can be very small.The coil I need to build will be between 9-15 foot and the 15 foot would have many strawberrys.Last year when I was working on my formula for my next coil it took 2 weeks to put almost everything in order.The one I ended up with was 4.5 feet of size....... (00)........ copper cable.Still I would like to do a 9 and a 15 footer. but what would I do with all that electricity.this Set up shoots lightning bolts if not carful.Regards Andy (I think you are on the right track with a larger coil.) keep in mind Tesla's bifilar talked about 1000 turns of a #8 copper wire.there is another trick to these wires.spacing between the rotations should be the exacsize of the wire for a #8 then you could put a #8 in the space.with this new information I might find your frequency for you.BACK!!!!!!BACK!!!!!BACK to my drawing board!!!!!!!!!HA!!!!!!!!!!! HA!!!!!!!!!!!

[jeanna]

Guys (peizoelectric effect)=microphone

no kidding? wow. thanks for that, andy!

Here is the promissed shot of the verrrry big battery in front of the family: Just try to imagine how much wire is in this. It has something stacked on top, or something on top, anyway. Maybe it is a hollow pipe, maybe not?

jeanna

[1tesla01]

To match a coil or antenna here is the formula 1/4 wave (length=234/frequency) x 4 will give you the full wave length.1/4 is a subharmonic of the full wave length.So multiply the length x 234 And you will hit a subharmonic X 4 will give the full wave length.In Mhz hope this helps. Regards Andy

[1tesla01]

Just for kicks and giggles (thats....speculation..... for non southerners) lets change diameters to length and see what happens?frequency wise in Mhz ****Im courious Andy*****

[1tesla01]

 "I had read before but looking over it again just wanted to point out a few things and ask a question.  He does list in there some wire sizes.. "No. 20 copper wire, the coil forty feet in diameter with 42 convolutions..."  "A coil as receiver of 26 ft. in diameter of No. 28 magnet wire with 40 convolutions with a double pole receiver..."  another days tests "circular coils of No. 28 magnet wire 26 ft. in diameter with forty convolutions with forty eight cell dry batteries connected in with coil and carbon ball transmitter..."  receiver "..two coils wire seven feet in diameter containing 33 convolutions each.  First coil office wire No. 20 second or top coil of No. 20 Magnet wire with two bell receivers"Fantastic Post!!!!!!!!!!!!!!!!