Extending Range of an RF Modules

Hi mates

I have a Transciever Module of Range 300( 434 Mhz) Meters I want to Extend The range upto 1 Km or so

Is this Possible by
1. Using a Power Amplifier
2. Increasing the antenna size
3. Or any thing else please suggest

I really need help

i increase the power , y using power amplifier
and design a good low noise amp before ur receiver


khouly