A (radio portion) may pertain-to an electromagnetic spectrum.
A broad spectrum can be constituted-of-or-filled-with musical styles.
A broad spectrum can be constituted-of-or-filled-with faiths.
A broad spectrum can be constituted-of-or-filled-with industry.
A spectrum can be constituted-of-or-filled-with (research conferences).
A broad spectrum can be constituted-of-or-filled-with markets.