heloo to every one
In my project RX like WRL-10532 (RF Link Receiver - 4800bps (434MHz)) will be mounted on the edge rotating disc with RPM around 8000, and TX will be stationary nearby. So my question is will these modules work at this RPM or there will be a problem of Doppler shift,
I want to make sure before purchasing that i have right hardware, If these modules can’t work then please suggest me the other options.
Thanks In Advancs 
What is the diameter of the disk?
If it is 1/2 cm, you would not have a problem. If it was 8,000km, you would.
Tangential speed (m/s) = diameter(m) * RPM * pi * 60
Now the Doppler shift is a ratio of the tangential speed to that of the speed of light. If the shift is more than the Rx can handle you will have problems.
You also need to worry about accelerations tearing the board apart!
I would worry more about multi-path and path-loss than doppler. Put a whip antenna in the middle of the disk.
the diameter would be around 11 cm.
The disc will start smoothly so i think there will be no problem of wear and tear of circuit board
11cm = 0.11m
0.11m * 8000 rev/min * pi (rad/rev) * 1/60(min/sec) = 46 meters/sec tangential speed at very edge.
c = 299,792,458 m/s
Ratio = 46/299,792,458 = 15.3e-6 percent change! That would be hard enough to measure in a laboratory let alone in the field.
Actually, it is a little worse than that. After all, doppler radars work with those kinds of velocities. According to this:
http://en.wikipedia.org/wiki/Doppler_radar
The shift would be about 133 Hz, not enough to do harm, but measurable with most frequency counters.
You are right. I should have finished the calculation!
434 Mhz * 2 (for coming and going) * 46/299,792,458 does give around a 130 Hz change total (±65Hz).