How to build: simple antenna amplifier for 870 MHz

[rexys]

Hi, I'm trying to build a simple antenna amplifier for 870 MHz. It must be connected to a home automation systems that both send and receive at the same antenna (870MHz) Can anyone help me closer to a diagram of one of these?
Have lots of experience building electronics.

Kind Regards

[pebe]

Separate amplifiers for receive and transmit would have to be built into the board inboard of the Tx/Rx switch.

Unless you are familiar with the regulations governing these devices, and you are competent with designing at that frequency on small PC boards, then it's a no-goer.