This report describes the test procedures and results of the product evaluation for the InfiniMUX G4. The InfiniMUX G4 is an audio gateway device manufactured by Infinimode Systems Inc. An audio gateway device (also called an audio matrix or a cross-band switch) links disparate radio systems to support communications interoperability between dissimilar wireless systems. Such a device simply passes baseband (audio) signals from the receiver portion of one radio to the transmitter portion of a dissimilar radio system.