What frequency do you mean? The frequency listed or displayed
for a radio station can differ, depending upon the radio
receiver, the type of modulation used and how you are
demodulating (or modulating) the signal, and the person listing
the frequency. This is especially true for high frequency (HF)
radios. To help avoid confusion, three terms are used to
describe these radio frequencies: assigned, carrier, and window.
The assigned frequency is defined by the International
Telecommunications Union Radio Regulations as "the centre of a
frequency band assigned to a station". In fact, it is the actual
radio frequency of the signal being transmitted and received.
This is the most commonly used frequency designation. The
carrier frequency is the frequency of the carrier, or the
suppressed carrier of a signal. For many, perhaps most radio
signals, the carrier frequency and the assigned frequency are
identical. They are identical for AM (dual sideband) signals.
They are different for single sideband radios. For marit