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58 A General Guide to Scanning
• You cannot use the disconnect tone detect function
if you are programming a trunking frequency or a
fleet map.
To set the scanner to automatically tune to the data
channel once again when it detects a disconnect tone,
press
SVC (E)
.
ˆ
A General Guide to
Scanning
Your scanner’s reception is mainly “line-of-sight.” You
usually cannot hear stations that are beyond the horizon.
GUIDE TO FREQUENCIES
National Weather Frequencies
Birdie Frequencies
Every scanner has birdie frequencies. Birdies are sig-
nals created by the scanner’s internal circuits. These
stray frequencies might interfere with broadcasts on the
same or similar frequencies. If you program one of these
frequencies, you hear only noise on that frequency. If the
interference is not severe, you might be able to turn
SQUELCH
clockwise to cut out the birdie.
This scanner’s known birdie frequencies (in MHz) are:
162.400 162.475 162.525
162.425 162.500 162.550
162.450
41.6000 145.6000 165.3000 171.2500
407.7625 407.8125 413.1750 413.2250
415.0000 435.9250 455.7375 465.6500
485.4625 489.2500 823.8000 899.2375
906.4125 906.5875 926.7000 1290.7000
20-524A.fm Page 58 Tuesday, June 27, 2000 3:41 PM