Rigol has a new low-cost spectrum analyzer (SA). Saelig ... The following picture shows the Rigol displaying the FM radio band. The center frequency is 100 MHz with a span of 20 MHz (that is, the SA ...

The FFT is inherently a baseband transform. In other words, the frequency range of the FFT always starts at 0 Hz and extends to some maximum frequency, f S /2. This can be a significant limitation in ...