Nope, you haven't the slightest bit of understanding of what the term
"passband" means so your question is nonsense.

"Radio receivers generally include a tunable band-pass filter with a
passband that is wide enough to accommodate the bandwidth of the radio
signal transmitted by a single station."

That statement is at best misleading, and in some cases incorrect.

In most receivers any *tunable* filter is MUCH MUCH wider than the
bandwidth required to accommodate the bandwidth of the signal transmitted.

The selectivity being produced by one or more *fixed* frequency filters
which are just wide enough to accommodate the bandwidth of the wanted
signal.


For me a radio is a box with the knob to rotate.
Now at FM no brakes between stations. At AM are.

What was in 1915?
S*


In 1915 there were no broadcast stations to speak of so your dial
would be just one large "brake" (sic).

Jeff