Quote Originally Posted by shahidali55
Is there any way we can make our own RF modules from basic components and maybe a PIC?
Here in Bangalore, India, there is no one who sells RF modules...
So has some one tried making RF modules???
It really depends on the frequency you want to use but ASK RF transmitters, in general and with frequencies below 500MHz are fairly easy. You can find schematics on the web. RF receivers are a bit more difficult but you can find schematics for superregenerative receivers also. In the past, Ming had schematics for both their ASK transmitters and receivers (~300MHz) online.

Unless there are import issues, you can also buy them readily online from vendors in Asia and Australia (as well as elsewhere). Futurlec, in Australia, stocks the same Wen Shing (Taiwan) modules available from many vendors around the world.