decoupling capacitor help!

hi all
i am using a RF module for communication operating at 433 MHz. i need to attach a decoupling capacitor with power supply can u tell me the exact value what it should be?
requirement is supply voltage ripple should be less than 10mV.

Also do i need additional capacitor say 10 uF at a distance (on power supply) for ripple removal.
thanks
bye

There's no 'exact' value, and it's best to have a range of decouplers - certainly a 10uF would be good, but you need a small one very close, say 1000pF or so. However, if it's a licence free module it almost certainly already has suitable decoupling - simply look at the datasheet for what you need to do!.

Thanks Nigel
I will better go for a range of decouplers and a small value just above the module.
Thanx again