So I've connected a SignalLink USB to my Icom 706IIg via the data port and to my Mac Book Pro and am running fldigi and flrig. But changing the frequency in eith fldigi or flrig doesn't change the freq on the radio. Should it? The PTT works from fldigi. But the freq seems to be manual. Should the software be able to control the radio's frequency? What am I missing here?