You want to make this thing talk to that thing waaay over there? Try the SeeedStudio super-long range 433Mhz RF link bundle! They're claiming 2KM range for wireless data transport & remote control use!
SeeedStudio beats 433MHz into submission to create a super-long (up to 2KM / 1.25Mile) range link! Complete with VCO , PLL technology, steady Frequency and super anti-jamming ability, it's a usable pair of modules to create a wireless data transport or remote control!
Note: Uncoil the antenna!