Vahesagedus on selle signaali sagedus, mis saadakse tavaliselt raadiosagedusliku signaali sageduse ja heterodüüni signaali sageduse omavahelisel segustamisel.
The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency; the intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done.
