RadioShack Pro 91 Handheld Trunking Scanner Owners Manual

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152.0075 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MED
152.030–152.240  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TELB
152.270–152.480  . . . . . . . . . . . . . . . . . . . . .  IND, TAXI, BUS
152.510–152.840  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TELB
152.870–153.020  . . . . . . . . . . . . . . . . . . . . . . . . . . IND, MOV
153.035–153.725  . . . . . . . . . . . . . . . . . . . . . .  IND, OIL, UTIL
153.740–154.445  . . . . ....

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462.9375–463.1875  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MED
463.200–467.925  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS
FM-TV Audio Broadcast, UHF Wide Band (470–512 MHz)
(Channels 14 through 69 in 6 MHz steps)
475.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Channel 14
481.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Channel 15
487.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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TROUBLESHOOTING
If you have problems, here are some suggestions that
might help. If they do not, take your scanner to your
loca l  RadioShack store for assistance.
PROBLEMPOSSIBLE 
CAUSEREMEDY
Scanner is on but 
will not scan.
SQUELCH is not 
adjusted cor-
rectly.Turn SQUELCHclockwise.
Only one channel 
or no channels 
are stored.Store frequencies 
into more than 
one channel.
Scanner is totally 
inoperative.No power. Check the batter-
ies or make sure 
the AC adapter or 
DC adapter is 
connected...

64
PROBLEMPOSSIBLE 
CAUSEREMEDY
An antenna is not 
connected or 
connected incor-
rectly.Make sure an 
antenna is con-
nected to the 
scanner.
Errorappears.Programming 
error.Re-enter the fre-
quency correctly, 
including the deci-
mal point.
The scanner 
locks on frequen-
cies that have an 
unclear transmis-
sion.Stored frequen-
cies are the same 
as “birdie” fre-
quencies.Avoid storing fre-
quencies listed 
under “Birdie Fre-
quencies” on 
Page 57 or only 
listen to them 
manually. 
Scanner will not...

65
Scanner will not 
stop while scan-
ning a scan list.No IDs have 
been stored.Store one or more 
IDs (see “Scan 
Lists” on Page 48.
The IDs you have 
stored are not 
active.Scan another 
transmission.
Scanner will not 
acquire a data 
channel.
SQUELCH is not 
correctly adjusted 
for trunk tracking.Adjust squelch for 
trunk tracking. 
See “Setting 
Squelch for the 
Trunk Tracking 
Mode” on 
Page 41. 
The frequency 
used for the data 
channel is miss-
ing.Press 
SRC to 
search for the 
data channel (see...

66
RESETTING THE SCANNER
If the scanner’s display locks up or does not work prop-
erly, you might need to reset the scanner. 
Caution:
 This procedure clears all the information you
have stored into the scanner. Before you reset the
scanner, try turning it off and on to see if it begins work-
ing properly. Reset the scanner only when you are sure
it is not working properly.
1. Turn off the scanner.
2. While you hold down the 
2 and 9 keys, turn on the
scanner. 
CLEAR flashes for about 8 seconds as
the...

67
CARE AND MAINTENANCE
Your RadioShack PRO-91 150-Channel Handheld
Trunking Scanner is an example of superior design and
craftsmanship. The following suggestions will help you
care for your scanner so you can enjoy it for years. 
Keep the scanner dry. If it gets wet, wipe
it dry immediately. Liquids can contain
minerals that can corrode the electronic
circuits.
Use only batteries of the recommended
size and type. Always remove old and
weak batteries. They can leak chemicals
that destroy electronic...

68
SPECIFICATIONS
Frequency Coverage:  .....  29–54 MHz (in 5 kHz steps)
108–136.975 MHz (in 12.5 kHz steps)
137–174 MHz (in 5 kHz steps)
406–512 MHz (in 12.5 kHz steps)
806.0000–823.9375 MHz (in 12.5 kHz steps)
851.0000–868.9875 MHz (in 12.5 kHz steps)
896.1125–956.0000 MHz (in 12.5 kHz steps)
Monitor Channels  5
Number of Banks  5
Sensitivity (AM/FM):
NFM: 20 dB S/N at 3 kHz deviation):
29–54 MHz  0.5 µV
137–174 MHz  0.4 µV
406–512 MHz  0.4 µV
806–956 MHz  0.6 µV
AM: 20 dB S/N at 60% modulation):...

69Power Requirement:
  4 AA Alkaline Batteries (6.0 VDC),
          or 4 AA Rechargeable Ni-Cd Batteries (4.8 VDC),
                                 or AC Adapter (Cat. No. 273-1665),
                                  or DC Adapter (Cat. No. 270-1560)
Current Drain:
Squelched ..................................................  70 mA
Full Output  ...............................................  180 mA
Dimensions (HWD)  ...............  6
1/4× 21/2× 19/16 Inches
(158 × 63 × 40 mm)
Weight (without antenna,...

70
NOTES