RF Transmitter/Receiver circuit

Do you guys have any ideas, how to build simple RF transmitter and receiver circuits. i am trying to get the wireless connection between trasmitter and receiver using LINX HP3 SERIES tx/rx MODULE.

check at https://hoperf.com.

They offer a cheap transceiver "universal ISM band FSK transceiver".

It can be used for telemetry purposes and many other applications. They are programmable for every use and use nonlicenced frequency bands.

You can't make an own circuit cheaper than that. I costs aobut 10 EURO.

The name: RFM12. Download the data sheet first to see if you can program the device.