Uniden BC246T ユーザーズマニュアル

83

Your scanner's Close Call

TM

 feature lets you set the 

scanner so it detects, displays the frequency of, and lets 
you hear a nearby strong radio transmission. You can set 
the scanner so the Close Call feature works "in the 
background" while you are scanning other frequencies, 
turn off normal scanning while the Close Call feature 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 finds a frequency. You can 
also set the frequency band where you want the scanner 
to look for transmissions.

To turn background Close Call detection on or off, press 

 then 

. When the feature is on, 

 appears on the 

display and normal operation is briefly interruped about 
every 2 seconds.

Notes: 

• The Close Call feature 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. Several factors affect 
Close Call performance, however. Performance is 
increased with higher transmit power, receive 
antenna tuned to the target band, and a low back-
ground RF level. Other than the antenna, you have no 
control over these factors, but they explain why per-
formance might vary by both location and time.

• The Close Call feature cannot detect satellite dishes 

or any transmitter with a frequency above or below 
the frequency ranges listed under “Setting Close Call 
Options” on Page 84.

• The Close Call feature works better with some types 

of transmissions than others. It might not correctly 
display frequency information for transmitters using a 
highly directional antenna (such as an amateur radio 
beam antenna) or if there are many transmitters 
operating at the same time in the same area.