C. Crane BC75XLT - Manual (Page 43)

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2. For the Close Call mode, frequencies are divided into
4 Close Call bands. Turn these bands on and off by
pressing 1 - 4 as indicated:
band
Range (MHz)
To turn a Close Call
band on/off, press . . .
Low High
VHF Low 25.00000 54.00000 1
Air 108.00000 136.99166 2
VHF High 137.00000 174.00000 3
UHF 406.00000 512.00000 4
You can set the scanner so it alerts you when the Close Call
feature detects a frequency. Program alert tones through
your PC (see page 49).
Notes:
• Close Call RF capture cannot detect frequencies outside the
scanner’s normal operating range.
• Close Call mode works better with some types of
transmissions than others. It might not correctly display
frequency information for transmitters using a highly
directive antenna (such as an amateur radio beam antenna),
if there are many transmitters operating at the same time in
the same area, or if the transmitter is a broadcast television
station.
Using Close Call Mode
Close Call mode has three operation modes: