Szczepan Bialek wrote:

napisa? w wiadomo?ci
...
Szczepan Bialek wrote:

"Jeff" napisal w wiadomosci
...


So I modify may question: "Are in today transmitters the "variations of
Tesla
coils" or the "variations of Marx generators".
Or "is possible to do the transmitter without coils"?
If Yes, when was the first?

I have never seen a transmitter (even that in a mobile phone).
S*

Neither, some of Tesla's equipment may have made use resonance, but they
are not the root of resonant circuits used in modern equipment.
ie Tesla coils did not turn into the circuits used today.

"is possible to do the transmitter without any coils"?
S*

Yes.

Microwave transmitters routinely use resonant devices other than coils and
capacitors.

Yes. It was impossible to "make" the microwave frequency using coils.

No, it is not "impossible", just more difficult the higher in frequency
you go.

At lower microwave frequencies it is a coin toss whether to use coils
and capacitors or other things.

Magnetrons are for it.

Magnetrons are not relevevant to the question.

But are the modern radio waves (ham) transmitters without any coils?
S*

It is possible, at least at low HF, but not practical in general.

You are babbling.