A technique for synchronizing different network access modules in a mobile communication device is provided. A device embodiment (100) comprises a first network access module (102) having a first radio technology, or RAT, interface (114) and being clocked at a first clock frequency and a second network access module (104) having a second RAT interface (130) and being clocked at a second clock frequency, wherein the first clock frequency is different from the second clock frequency. A method implementation of this technique comprises the steps of generating a clock signal having the first clock frequency, outputting the clock signal for use as a first reference clock signal in the first network access module (102), converting the clock signal to the second clock frequency, and outputting the converted clock signal for is use a second reference clock signal in the second network access module (104).