TLKR-T7

I need to build a receiver and transmitter for a set of Motorola TLKR-T7s. the transmitter and receiver is only required to over come a mountain blocking the signals from each other. I only need to transmit 2.4 km with it. I want to place the receiver/transmitter at the top of the mountain so to go over it instead of through it.

The radio specs:

• Frequency band:PMR446• Transmit power:500mW• 8 ChannelsSub-Channels Qty 121

(CTSS/DCS)

Could some one please help me with this? I am a bit rusty with signal transmission.

I would appreciate it very much if the specs of a working circuit for this is available for posting.