Can I replace 2n3563 with 2sc2570?
A video output transistor from a not too old CRT VGA monitor would probably do it, they tend to be "jumbo TO92" or TO126, so very likely more powerful than you need. FT specifications of 600MHz aren't rare. The voltage rating is more than you need, the gain may be a bit lower than you were hoping for but that's about it. HD monitors had video transistors nearer 1GHz and much lower voltage rating.
I dont find the 2N3563 but i have 2sc2570. I have check these datasheet
2sc2570: http://alltransistors.com/transistor.php?transistor=13386
2n3563: http://alltransistors.com/transistor.php?transistor=3341
And i think that numbers is pretty close. But i don't know if has big diference or not at my circuit.
Also the pinout its no problem (if collector-base-emmiter pinouts is not at the same position). But i need to know if can do functionally the same work.
So can i use 2sc2570 instead of 2n3563?Yes or No? The power of transmitter is not so big problem.I don't care if i have 0.8 watt or 1 watt transmitter. I just want to know if do the same work both of transistors.A video output transistor from a not too old CRT VGA monitor would probably do it, they tend to be "jumbo TO92" or TO126, so very likely more powerful than you need. FT specifications of 600MHz aren't rare. The voltage rating is more than you need, the gain may be a bit lower than you were hoping for but that's about it. HD monitors had video transistors nearer 1GHz and much lower voltage rating.
IOW: You want everyone else to search for and study the data sheets for you.So can i use 2sc2570 instead of 2n3563?Yes or No? The power of transmitter is not so big problem.I don't care if i have 0.8 watt or 1 watt transmitter. I just want to know if do the same work both of transistors.
I've seen people get away with a BC548 - but I seriously doubt the performance is anywhere near as good.Most high frequency small signal transistors will work in that circuit because it is only an oscillator so it is not a demanding application.