C. Crane BC75XLT - Manual (Page 17)

17
SCANNING bASICS
This section provides a background on how scanning works.
You don’t really need to know all of this to use your scanner,
but some background knowledge will help you get the most
from your BC75XLT.
WHAT IS SCANNING?
Unlike standard AM or FM radio stations, most two-way
communications do not transmit continuously. Your
BC75XLT scans programmed channels until it finds an active
frequency, then stops on that frequency and remains on
that channel as long as the transmission continues. When
the transmission ends, the scanning cycle resumes until it
receives another transmission on a programmed channel.
WHAT IS SEARCHING?
The BC75XLT searches for active frequencies. This is different
from scanning because you are searching for frequencies
that have not been programmed into the scanner. When
you select frequency bands to search, the scanner searches
for any active frequency within the lower and upper limits
you specify for that band. When the scanner finds an
active frequency, it stops on that frequency as long as the
transmission lasts. if you think the frequency is interesting,
you can program it into one of the bands. if not, you can
continue to search.