RadioShack Pro 2050 Trunk Track Home Scanner Owners Manual

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FIRE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Fire Department
HAM  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amateur (Ham) Radio
GOVT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Federal Government
GMR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Mobile Radio
GTR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Trunked
IND  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Industrial Services
. . . . . . . . . . . . . . . . . . . . . . . .  (Manufacturin
g, Construction, Farming, Forest Products)
MAR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Military Amateur Radio
MARI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Maritime Limited Coast
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   (Coast Guard, Marine Telephone, 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shipboard Radio, Private Stations)
MARS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Military Affiliate Radio System
MED  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Emer
gency/Medical Services
MIL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U.S. Military
MOV  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motion Picture/Video Industry
NEW  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . New Mobile Narrow
NEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Relay Press (Newspaper Reporters)
OIL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil/Petroleum Industry
POL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Police Department
PUB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Public Services
. . . . . . . . . . . . . . . . . . . . . . .  (Public Safety, Local Government, Forestry Conservation)
PSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public Safety
PTR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Private Trunked
ROAD  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Road & Hi
ghway Maintenance
RTV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Radio/TV Remote Broadcast Pickup
TAXI  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taxi Services
TELB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Mobile Telephone
. . . . . . . . . . . . . . . . . . . . . . . . . . (Aircraft, Radio Common Carrier, Landline Companies)
TELC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cordless Phones
TELM  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Telephone Maintenance
TOW  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Tow Trucks
TRAN  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Transportation Services
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Trucks, Tow Trucks, Buses, Railroad, Other)
TSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Trunked Systems
TVn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  FM-TV Audio Broadcast
USXX  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Government Classified
UTIL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Power & Water Utilities
WTHR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weather
HIGH FREQUENCY (HF) — (3 MHz–30 MHz)
10-Meter Amateur Band   (28.0–29.7 MHz )
29.000–29.700  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  HAM
VERY HIGH FREQUENCY (VHF) — (30 MHz–300 MHz)
VHF Low Band   (29.7–50 MHz — in 5 kHz steps)
29.700–29.790  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND
29.900–30.550  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT, MIL
30.580–31.980  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB
32.000–32.990  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT, MIL
33.020–33.980  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND, PUB
34.010–34.990  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT, MIL
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35.020–35.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS, PUB, IND, TELM
36.000–36.230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
36.230–36.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Spill Cleanup, GOVT, MIL
37.020–37.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, IND
38.000–39.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
39.020–39.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB
40.000–42.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, MIL, MARI
42.020–42.940 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL
42.960–43.180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND
43.220–43.680 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  TELM, IND, PUB
43.700–44.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRAN
44.620–46.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .POL, PUB
46.600–46.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, TELC
47.020–47.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB
47.420  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  American Red Cross
47.440–49.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB
49.610–49.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MIL, TELC
6-Meter Amateur Band   (50–54 MHz)
50.00–54.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM
Aircraft Band (108–136 MHz)
108.000–121.490 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .AIR
121.500  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR Emergency
121.510–136.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .AIR
U.S. Government Band (137–144 MHz)
137.000–144.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
2-Meter Amateur Band (144–148 MHz)
144.000–148.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM
VHF High Band (148–174 MHz)
148.050–150.345 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  CAP, MAR, MIL
150.775–150.790 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED
150.815–150.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  TOW, Oil Spill Cleanup
150.995–151.475 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ROAD, POL
151.490–151.955 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, BUS
151.985  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TELM
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, FIRE
154.490–154.570 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, BUS
154.585  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Oil Spill Cleanup
154.600–154.625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  BUS
154.655–156.240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MED, ROAD, POL, PUB
156.255–157.425 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  OIL, MARI
157.450  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
157.470–157.515 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOW
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157.530–157.725  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  IND, TAXI
157.740 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS
157.770–158.100  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
158.130–158.460  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND, OIL, TELM, UTIL
158.490–158.700  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
158.730–159.465  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL, PUB, ROAD
159.480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OIL
159.495–161.565  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TRAN
161.580–162.000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  OIL, MARI, RTV
162.0125–162.35  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX
162.400–162.550  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WTHR
162.5625–162.6375  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, MIL, USXX
162.6625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
162.6875–163.225  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, MIL, USXX
163.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
163.275–166.225  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, MIL, USXX
166.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, RTV, FIRE
166.275–169.400  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, BIFC
169.445–169.505  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireless Mikes, GOVT
169.55–169.9875  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, MIL, USXX
170.000–170.150  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BIFC, GOVT, RTV, FIRE
170.175–170.225  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT
170.245–170.305  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireless Mikes
170.350–170.400  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, MIL
170.425–170.450  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BIFC
170.475 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  PUB
170.4875–173.175  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT, PUB, Wireless Mikes
173.225–173.5375  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MOV, NEWS, UTIL, MIL
173.5625–173.5875  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MIL Medical/Crash Crews
173.60–173.9875  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GOVT
ULTRA HIGH FREQUENCY (UHF) — (406 MHz–3 GHz)
U. S. Government Band (406–420 MHz)
406.125–419.975  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, USXX
70-Centimeter Amateur Band (420–450 MHz)
420.000–450.000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM
Low Band (450–470 MHz)
450.050–450.925  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RTV
451.025–452.025  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, OIL, TELM, UTIL
452.0375–453.00  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, TAXI, TRAN TOW, NEWS
453.0125–454.000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, OIL
454.025–454.975  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
455.050–455.925  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RTV
457.525–457.600  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS
458.025–458.175  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MED
460.0125–460.6375  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIRE, POL, PUB
460.650–462.175  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  BUS
462.1875–462.450  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS, IND
462.4625–462.525  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, OIL, TELM, UTIL
462.550–462.925  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  GMR, BUS
462.9375–463.1875  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  MED
463.200–467.925  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
20-430.fm  Page 43  Wednesday, August 4, 1999  1:29 PM 
						

							44
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  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Channel 16
... ...
511.750. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Channel 20
Note: Some cities use the 470–512 MHz band for land/mobile service.
Conventional Systems Band – Locally Assigned
851.0125–855.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  CSB
Conventional/Trunked Systems Band – Locally Assigned
856.0125–860.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTSB
Trunked Systems Band – Locally Assigned
861.0125–865.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  TSB
Public Safety Band – Locally Assigned
866.0125–868.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  PSB
33-Centimeter Amateur Band (902–928 MHz)
902.0000–928.0000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM
Private Trunked
935.0125–939.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  PTR
General Trunked
940.0125–940.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GTR
20-430.fm  Page 44  Wednesday, August 4, 1999  1:29 PM 
						

							45
FREQUENCY CONVERSION
The tuning location of a station can be expressed in frequency (kHz or MHz) or in
wavelength (meters). The following information can help you make the necessary
conversions.
1 MHz (million) = 1,000 kHz (thousand)
To convert MHz to kHz, multiply the number of megahertz by 1,000:
9.62 (MHz) ¥ 1000  = 9620 kHz
To convert from kHz to MHz, divide the number of kilohertz by 1,000:
2780 (kHz) ¸ 1000 = 2.780 MHz
To convert MHz to meters, divide 300 by the number of megahertz:
300 ¸ 7.1 MHz = 42.25 meters
20-430.fm  Page 45  Wednesday, August 4, 1999  1:29 PM 
						

							46
TROUBLESHOOTING
If your scanner is not working as it should, these suggestions might help you elimi-
nate the problem. If the scanner still does not operate properly, take it to your local
RadioShack store for assistance. 
PROBLEM POSSIBLE CAUSE REMEDY
Scanner is on but will not 
scan.SQUELCH is not correctly 
adjusted.Adjust SQUELCH clock-
wise.
Only one channel or no 
channels are stored.Store frequencies into 
more than one channel.
Scanner is totally inoper-
ative.No power. Make sure the scanner is 
plugged into a working 
AC or DC outlet.
The AC or DC adapter is 
not connected.Be sure the adapter’s 
barrel plug is fully 
inserted into the 
DC 12V 
jack.
The scanner must be 
reset.Reset the scanner (see 
“Resetting the Scanner” 
on Page 49).
Poor or no reception An antenna is not con-
nected or connected 
incorrectly.Make sure an antenna is 
connected to the scan-
ner.
Error appears. Programming error. Reprogram the fre-
quency correctly, includ-
ing the decimal point.
In the scan mode, the 
scanner locks on fre-
quencies that have an 
unclear transmission.Programmed frequen-
cies are the same as 
“birdie” frequencies.Avoid programming fre-
quencies listed under 
“Birdie Frequencies” on 
Page 38 or only listen to 
them manually. 
Scanner will not track a 
trunked system.The transmission might 
not use a system that 
can be tracked by your 
scanner.Scan another transmis-
sion.
20-430.fm  Page 46  Wednesday, August 4, 1999  1:29 PM 
						

							47 Scanner will not track a 
trunked system.
(continued)
The data frequency is 
missing.Find the data frequency 
(see “Programming 
Trunked Frequencies” on 
Page 26).
PROBLEM POSSIBLE CAUSE REMEDY
The system you are try-
ing to track is a Type I 
system, and the scanner 
is set to scan Type II sys-
tems.Set the scanner to 
receive Type I trunked 
frequencies. See “Scan-
ning Type I and Hybrid 
Trunked Systems” on 
Page 33.
Scanner will not stop 
while scanning a scan 
list.No IDs have been 
stored.Store one or more IDs 
(see “Scan Lists” on 
Page 31).
The IDs you have stored 
are not active.Scan another transmis-
sion.
Scanner will not acquire 
a data channel.
SQUELCH is not cor-
rectly adjusted for trunk 
tracking.Adjust squelch for trunk 
tracking. See “Setting 
Squelch for the Trunk 
Tracking Mode” on 
Page 26.
The frequency used for 
the data channel is miss-
ing.Add the frequency used 
for the data channel to 
the frequency list. (see 
“Programming Trunked 
Frequencies” on 
Page 26).
Missing replies to con-
versations.The system you are try-
ing to track is a Type I 
system, and the scanner 
is set to scan Type II sys-
tems.Set the scanner to 
receive Type I trunked 
frequencies. See “Scan-
ning Type I and Hybrid 
Trunked Systems” on 
Page 33.
PROBLEM POSSIBLE CAUSE REMEDY
20-430.fm  Page 47  Wednesday, August 4, 1999  1:29 PM 
						

							48
PROBLEM POSSIBLE CAUSE REMEDY
Missing replies to con-
versations.
(continued)
The selected fleet map is 
incorrect.Try another preset fleet 
map or program your 
own fleet map (see 
“Scanning Type I and 
Hybrid Trunked Systems” 
on Page 33).
Not all of the trunk’s fre-
quencies have been 
entered.Enter all of the trunk’s 
frequencies.
Channel activity indica-
tors are lighting but no 
sound is heard.The transmission might 
be a private or tele-
phone interconnect call. 
The scanner does not 
scan these types of 
transmissions.Scan for another trans-
mission.
The ID is locked out. Unlock the ID (see 
“Unlocking a Single ID” 
on Page 29 or “Unlock-
ing All IDs” on Page 29).
20-430.fm  Page 48  Wednesday, August 4, 1999  1:29 PM 
						

							49
RESETTING THE SCANNER
You might need to reset the scanner if any of the following occur:
• The scanner’s display locks up. 
• The scanner does not work properly after you connect power. 
• The scanner is dropped or subjected to a physical or electrical shock.
Caution: 
This procedure clears all the information you have programmed into the
scanner. Use this procedure only when you are sure your scanner is not working
properly.
1. Turn off the scanner.
2. While you press and hold down 
2 and 9, turn on the scanner.
Note:
 It takes about 10 seconds until the reset is completed. 
CLEAr appears dur-
ing resetting.
Caution:
 Do not turn off the scanner while you reset it.
20-430.fm  Page 49  Wednesday, August 4, 1999  1:29 PM 
						

							50
CARE AND MAINTENANCE
Your RadioShack PRO-2050 VHF/UHF/Air/800MHz 300-Channel TrunkTracker
Home 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.
Handle the scanner gently and carefully. Dropping it can damage cir-
cuit boards and cases and can cause the scanner to work improperly.
Use and store the scanner only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices and
distort or melt plastic parts.
Keep the scanner away from dust and dirt, which can cause premature
wear of parts.
Wipe the scanner with a damp cloth occasionally to keep it looking new.
Do not use harsh chemicals, cleaning solvents, or strong detergents to
clean the scanner.
Modifying or tampering with the scanner’s internal components can cause a mal-
function and might invalidate the scanner’s warranty and void your FCC authoriza-
tion to operate it. If your scanner is not operating as it should, take it to your local
RadioShack store for assistance.
20-430.fm  Page 50  Wednesday, August 4, 1999  1:29 PM