Signal processing within a wireless modem

A wireless modem comprising:

• an RF module adapted to be connected to an antenna, comprising an intermediate frequency (IF) input and an intermediate frequency (IF) output;
• and
• a physical layer (PHY) device for modulating and demodulating a plurality of different format signals, wherein the plurality of different format signals include a baseband I/Q signal, a complex IF signal, and a real IF signal, the PHY device comprising a selection input for causing a selected one of said plurality of different format signals to be output to said IF input of said RF module.