Problem with oscillation in 200kHz Colpitts oscillator

Hi, i try to do a colpitts oscillator, with 200khz oscillation. I do the Schematics but i have problems to take the oscillation. i try to variate the resistance but nothing happen. what i can i do?

Re-check your values.

I Re-check my values, and i dont fine what is wrong. i need help please.

Added after 1 minutes:

I go to try again thanks

10pF on the base of your cct is very low.

Just replace the Cb 10pf with a 10nF and it will start oscillate.

I place the 10nF and start oscillate, thanks. but the sinusoid is not perfect. what can i do? I have the 200khz, but how can i get a perfect oscillacion?

Merry Christmas.

colpitts oscilator with my values

What do you mean by perfect oscillation? Nothing is perfect. You can reduce the harmonics but not eliminate it.

Hi,
You can select higher L/C (=higher Q) or apply
a tuned second stage >> has "cleaner" signal...
K.

I want reduce the harmonics, how can i do that?

Place a Low Pass Filter at the output.