Need some RF help - integrating with a Xemics DP1203 transceiver
It'll be difficult to find a replacement - this unit has to be controlled precisely - it says no radio knowledge required but there are some considerable things to figure out such as what frequency you need to receive and what bandwidth the signal is that you want to intercept.

The microprocessor interface is a must - it has to set up the frequency synthesizer - without knowing the transmit frequency you wish to intercept or the type of modulation it's guesswork.