I think kacher don't resonante on coil length in full or half wave etc.
It is the combination of coil induction and capacatity  (coil capacitive and the capacity of the connected items at the top)
Thats why the frequentie drops when the top of the tesla coil is connected to the ferrite and to the antenna coil.
Getting the frequenty higher is by reducing the inductance (shortening the secundairy coil)

Nick, thanks for the recommendations about the grounding and the damage HV can do.
I did run my push pull yesterday already,.... of course with grounding.
i see on the scope the kacher wave moving on the push pull frequentie (25kHz)
I will post some pictures of it later.

  Looking nice!
  There's still one thing I would do, though. Which is to change the toroid core for a real 3 inch Tv yoke, instead.
When you can, of course.  The more bulbs that you add on, or the higher wattage bulbs will vary the frequency. There is a reason that Ruslan and Akula both use high wattage bulbs. As they allow for more input to come into the system, via, Aether, or what ever.
   There is at least twice the amount of ferrite surface area in the yoke, compared to the toroid core. And twice the amount of wire it takes to wind it, which means more output, also. And the yoke was made for running at around 15kHz, I heard, but it's been a while since I checked on that. 
 
  Perhaps Itsu may want to step in and give some advice and ideas concerning tuning for the various frequencies, and so forth.
 
  Akula's first self runner would not self run on the smaller yoke core (2.5" dia, or so), so he changed to using the bigger 3 inch cores, instead.
 
   As far as the sync between the Kacher and the induction circuit...  It may not be right at 1/4, 1/3, or 1/2 wave, like we've heard. But, that's what we'll have to figure out. And, it may not be the same, for the different replications being tried.
   But, it's there, somewhere...

   apecore: You might also want to check the videos on YT by our member here, Tomtech29.
Like this one below,  he has several more, as well. And get up to speed on what's been tried by the different guys here.
  https://www.youtube.com/watch?v=7m7TVIKrDno
 
   

   Tomtech:
   Good to see that you're still here, and on the lookout.
   Thanks for your reply.
   I'll look at the video that you posted. I hope to see you back on the bench.
   We missed you, along with some of the other guys that aren't posting much anymore.
    Like Itsu, and ...

   But, now we have new motivation with apecore. He is quick and does clean work.  No mess of wires all over the place.
   

new yoke,... gives more amps,... Nick your right....(5A at resonance,.... up to 10A possible)
now the inductor gets warm,.... also the kacher has not much effort,... unless there are long streamers.

I will take some time in looking at Tomtechs video's, have the idea i will learn a lot.
Thanks all untill now

This old model is also of thick pipes... concept these coils is like under the nose in some it is as if the core of aluminum foil This is another story.

MATE

How it works   it's magic, Translating Russian into to English, the cures of Babalon perhaps. Try Google translate then select Russian download the keyboard and type it in but it won't tell you how it works You will need to know how stuff works to be able to solve that one, but may I suggest you work your way through this database from page one you will  find it a very good learning curve.

regards AG

Hi.
apecore

The more circuits on a spider leads the greater the risk that the systems are prone to inducing (gate transistors and signals must be without HV pins.)
- so take into consideration that the radiators attracts radiant energy with Tesla coil, and everywhere you have differences of high POTENTIAL all this raises (and the clutch as a microphone to speaker)
a bad example.hmm / ground transfers part interference is deposited on the current something somewhere spark jumps and goodbye equipment - welcome to the autumn of the Middle Ages.
the cause may be different and for example, saturation of one-half of a ferrite core (through which magnetic flux was too strong) and one half of surrendered bumm zzz.

How can something advise is do not concentrate to achieve high efficiency heaters! because she did not have a high weld current
as you can see in the movies is a circuit of the coil and capacitor sets in motion the alternating magnetic field collected energy from the collector is constant See how the charging of the capacitor by the diode rectifier to ground.
pulse capacitor is charged DC.!

Tesla provides voltage and current impulse yoke does not play the role of a high-amperage This is not the inverter it's not like that.
 I admits that he thought so that the current from the must take / from the field and not with the battery power multiplier
we are facing a big question mark: how to modulate the magnetic fle or if you prefer getting a standing wave

which account you do not look in these translations Ruslan no point A to point B. and you end up where you started.
do your best:
- get TL494 which will operate in the range of 2-3 MHz.Tesla breaker!
- ensure stable push pull optionally with stabilization The phase locked loop!
- electronic components, controllers and integrated circuits protected as the screen cover!
- perform independent and separate drivers low freg and hi Freg.ppv puls
sea and it sounds strange but recently I saw that the ground wire acts and performs the functions of stabilization to determine the direction of the phase.
in other devices running on a thin wire!
let me know if the message is clear or many words are skewed