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Close Call RF Capture ™
Your scanner’s Close Call feature lets you set the scanner so it detects then displays the
frequency of a nearby strong radio transmission. Close Call RF capture works great for
nding frequencies at venues such as malls and sporting events. You can set the
scanner so Close Call detection works “in the background” while you are scanning other
frequencies, turn off normal scanning while Close Call is working, or turn off the Close Call
feature and use the scanner normally. You can set the scanner so it alerts you when the
Close Call feature detects a frequency. You can also set the frequency band where you
want the scanner to look for transmissions.
Unlike searching, which requires the scanner to tune to a frequency to check for a
transmission, Close Call RF capture directly detects the presence of a strong, nearby
signal and instantly tunes to the source’s frequency.
Notes:
Close Call RF capture works well for locating the source of strong local transmissions such
as mobile and handheld two-way radios in areas with no other strong transmission
sources. However, if you are in an area with many transmission sources (such as pager
radio transmitters, multi-use radio towers, trafc control devices, etc.), Close Call RF
capture might not nd the transmission you are searching for, or it might nd a transmission
other than the one you are searching for.
Close Call RF capture cannot detect satellite dishes or any transmitter with a frequency
above or below the frequency ranges listed in Select Close Call Bands on Page 19.
Close Call 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.
Every 2 seconds, the scanner checks for frequencies in the range you specied in “Set
Close Call Option” on page 19 and interrupts the audio when it checks for a Close call
Transmission in that range.
Set Close Call Mode
These settings affect when Close Call actually operates.
When Close Call is on with another mode, every 2
seconds the scanner will switch the lter settings to
the ones set by the Close Call Bands option.
• Close Call: On Close Call is on at all times, for all modes.
• Close Call: Off Close Call is turned off for all modes.
• Close Call: Only Close Call is only available.
These modes can also be toggled by pressing C.C.
When Close Call is set to On, Close Call LED is On.
When Close Call is set to only mode, Close Call LED will
ash.
When Close Call is set to off, Close Call LED is Off.
When Close Call is on, “C-C” will be displayed every a
few seconds.
UBCT9 OM 17 12/11/07 3:53:35 PM