RadioShack Pro 2052 Vhf Uhf Scanner Reciever Owners Manual

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FM-TV Audio Broadcast, VHF Wide Band (174-216 MHz)
179.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TV7
185.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TV8
191.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TV9
197.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TV10
203.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  TV11
209.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TV12
215.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TV13
New Mobile Narrow Band (220-222 MHz)
220.000–222.000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  NEW
1.3-Meter Amateur Band (222-225)
220.000–225.000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  HAM
Military Aircraft Band (237.9-287.8 MHz)
237.900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Coast Guard Search and Rescue
239.800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FAA Weather
241.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Army
243.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Emergency
255.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FAA Flight Service
257.800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Civilian towers
287.800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Coast Guard Air/Sea Rescue
ULTRA HIGH FREQUENCY (UHF) — (300 MHz–3 GHz)
Military Aircraft Band (319.1-383.9 MHz)
319.100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FAA Traffic control
321.000-336.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Force
342.500-344.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FAA Weather
346.400-364.200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Air Traffic Control
381.800-383.900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Coast Guard
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
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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
FM-TV Audio Broadcast, UHF Wide Band (470–512 MHz)
(Channels 14 through 20 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
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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
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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 inopera-
tive.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 66).
Poor or no reception An antenna is not con-
nected or connected incor-
rectly.Make sure an antenna is 
connected to the scanner.
Error appears. Programming error. Reprogram the frequency 
correctly, including the deci-
mal point.
In the scan mode, the scan-
ner locks on frequencies 
that have an unclear trans-
mission.Programmed frequencies 
are the same as “birdie” fre-
quencies.Avoid programming fre-
quencies listed under 
“Birdie Frequencies” on 
Page 55 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 transmission.
The data frequency is miss-
ing.Find the data frequency 
(see “Programming Trunked 
Frequencies” on Page 32).
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Scanner will not track a 
trunked system 
(continued)
The system you are trying 
to track is a Type I System, 
and the scanner is set to 
scan Type II systems.Set the scanner to receive 
Type I trunked frequencies. 
See “Scanning Type I and 
Hybrid Trunked Systems” 
on Page 40.
Scanner will not stop while 
scanning a scan listThe IDs you have stored 
are not active.Scan another transmission.
Scanner will not acquire a 
data channelSquelch is not correctly 
adjusted.See “Setting Squelch for the 
Trunk Scanning Mode” on 
Page 31.
The frequency used for the 
data channel is missing.Add the frequency used for 
the data channel to the fre-
quency list. See “Program-
ming Trunked Frequencies” 
on Page 32.
Missing replies to conversa-
tionsThe system you are trying 
to track is a Type I system, 
and the scanner is set to 
scan Type II systems.Set the scanner to receive 
Type I trunked frequencies. 
See “Scanning Type I and 
Hybrid Trunked Systems” 
on Page 40.
The selected fleet map is 
incorrect.Try another preset fleet map 
or program your own fleet 
map. See “Scanning Type I 
and Hybrid Trunked Sys-
tems” on Page 40.
Not all of the trunk’s fre-
quencies have been 
entered.Enter all of the trunk’s fre-
quencies.
Channel activity indicators 
are lighting but no sound is 
heard.The transmission might be a 
private or telephone inter-
connect call. The scanner 
does not scan these types 
of transmissions.Scan for another transmis-
sion.
The ID is locked out. Unlock the ID (see “Unlock-
ing a Single ID” on Page 36 
or “Unlocking All IDs” on 
Page 36).
PROBLEM POSSIBLE CAUSE REMEDY
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RESETTING THE 
SCANNER
You might need to reset the scanner
if:
• the scanner’s display locks up. 
• the scanner does not work prop-
erly after you connect power. 
• the scanner is dropped or sub-
jected 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.
To reset the scanner, turn it off. Then,
while you hold down 
2 and 9, turn on
the scanner. 
CLEAr appears for
about 5 seconds while the scanner re-
sets.
Caution:
 Do not turn off the scanner
while it is resetting.
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CARE AND MAINTENANCE
Your RadioShack PRO-2052 1000-Channel Dual Trunking TrunkTracker Home
Scanner is an example of superior design and craftsmanship. The following sug-
gestions 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
might contain minerals that can corrode the electronic circuits.
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.
Handle the scanner gently and carefully. Dropping it can damage cir-
cuit boards and cases and can cause the scanner to work improperly.
Wipe the scanner with a damp cloth occasionally to keep it looking
new. Do not use harsh chemicals, cleaning solvents, or strong deter-
gents to clean the scanner.
Modifying or tampering with the scanner’s internal components can cause a mal-
function and might invalidate its warranty and void your FCC authorization to oper-
ate it. If your scanner is not performing as it should, take it to your local
RadioShack store for assistance.
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SPECIFICATIONS
Frequency Coverage (MHz):
10 Meter Amateur Radio  ...................................... 29.000–29.6950 (in 5 kHz steps)
VHF Lo  ............................................................... 29.7000–49.9950 (in 5 kHz steps)
6 Meter Amateur Radio  ...................................... 50.0000–54.0000 (in 5 kHz steps)
Aircraft ....................................................... 108.0000–136.9750 (in 12.5 kHz steps)
Government  ................................................... 137.0000–143.9950 (in 5 kHz steps)
2 Meter Amateur Radio  .................................... 144.000–147.9950 (in 5 kHz steps)
VHF Hi  ........................................................... 148.0000–174.0000 (in 5 kHz steps)
VHF TV  ........................................................... 179.7500-215.7500 (in 6MHz steps)
1 Meter Amateur Radio  ......................................  216.000-224.995 (in 5 kHz steps)
VHF Aircraft  ................................................  225.000-399.9875 (in 12.5 kHz steps)
Amateur Radio/Government  ..................... 400.0000–419.9875 (in 12.5 kHz steps)
70-cm Amateur Radio  ............................... 420.0000–449.9875 (in 12.5 kHz steps)
UHF Standard  ........................................... 450.0000–469.9875 (in 12.5 kHz steps)
UHF “T”  ..................................................... 470.0000–512.0000 (in 12.5 kHz steps)
Public Service  ........................................... 806.0000–823.9375 (in 12.5 kHz steps)
Public Service/Trunking Repeater ............. 851.0000–868.9875 (in 12.5 kHz steps)
Public Service  ...........................................  896.1125–956.0000 (in 12.5 kHz steps)
25-cm Amateur Radio  ...........................  1240.0000-1300.0000 (in 12.5 kHz steps)
Channels of Operation  ....................  Any 1000 channels in any band combinations
(50 channels ´
 20 banks), 50 search skip memories, and
20 service search skip memories
Sensitivity (S+N)/N=20 dB:
29–54 MHz  ..............................................................................................  0.5 m
V
108–136.975 MHz  ...................................................................................  1.5 m
V
137–174 MHz  ..........................................................................................  0.5 m
V
179.75-215.75 MHz  .................................................................................  3.0 m
V
216-224.995 MHz  ....................................................................................  0.5 m
V
225-399.9875 MHz  ..................................................................................  1.5 m
V
400–512 MHz  ..........................................................................................  0.4 m
V
806–956 MHz  ..........................................................................................  1.0 m
V
1240-1300 MHz  .......................................................................................  2.0 m
V
Spurious Rejection (@40.85 MHz)  ................................................................  60 dB
Selectivity:
±
10 kHz  ...................................................................................................  –6 dB
±
15 kHz  .................................................................................................  –50 dB
IF Rejection (@162.4 MHz)  ...........................................................................  80 dB
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Search Speed:
Normal  ............................................................................. 100 Steps/Sec (Max)
Hyper  ..........................................  300 Steps/Sec (Max) (only 5 kHz step band)
Scan Speed  ................................................................  50 Channels/Sec. (Nominal)
Priority Sampling  ..................................................................................... 2 Seconds
Delay Time  .............................................................................................  2 Seconds
IF Frequencies:
1st IF  .........................................  29–310.9875 MHz: 380.6050–380.7000 MHz
 311–512 MHz: 254.3125–254.4000 MHz
 806–956 MHz: 380.7000–380.7875 MHz
1240–1300 MHz: 380.7000-380.7875 MHz
2nd IF  ............................................................... 179.75–215.75 MHz: 10.7 MHz
Other Bands 10.85 MHz
3rd IF  ....................................................................................................  450 kHz
Squelch Sensitivity:
Threshold  ............................................................................... Less than 0.6 m
V
Tight  .............................................................  VHF Lo, Hi, UHF (S + N)/N 25 dB
Aircraft (S + N)/N 15 dB
Antenna Impedance  ................................................................................... 50 ohms
Audio Power  ..................................................................................  1.1 W Maximum
Built-In Speaker  ..........................................................  2
1/4 Inches (57 mm), 8 ohms
Operating Temperature ....................................................................–10 C to + 50 C
Power Requirements:
AC Adapter  .................................................................................... 12 Volts DC
DC Adapter  ...................................................................................  12 Volts DC
Current Drain:
At Squelched .......................................................................................... 240 mA
At Full Output  ......................................................................................... 440 mA
Dimensions (HWD)  ...........................................................  2
3/4 
´ 
81/16 ´
 711/16 Inches
(70 ´
 205 ´
 195 mm)
Weight ........................................................................................................  26.5 oz.
(750 g)
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
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NOTES
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