Our heterodyne or "radio-scrambling" broadcast had gone into operation, emitting impulses of constantly varying wave-length over the full broadcast range and heterodyning the Han communications into futility.
"The Airlords of Han"
Philip Francis Nowlan
But their valley forces were getting out of alignment a bit by now, owing to our heterodyne operations.
"The Airlords of Han"
Philip Francis Nowlan
This method of receiving continuous wave signals is called the "heterodyne" method.
"Letters of a Radio-Engineer to His Son"
John Mills