20-428 Owner’s Manual RadioShack 20-428 PRO-2055 1,000 Channel Multi Trunking Mobile/Base Scanner Please read this user’s guide before installing, setting up and using your new product www.radioshack.com Thank you for purchasing your Pro-2055 multi trunking scanner from RadioShack. You can mount your scanner in a fixed position and use it as a base scanner or you can use it as a mobile scanner by mounting it in a vehicle.
0-428 Owner’s Manual L/OUT (Lock Out) – lets you lock out a selected channel, skip a specified frequency during search, or lock out a selected ID code. CLEAR – clears an incorrect entry. PROG (Program) – programs frequencies in channels PWR/VOL/SQ – long knob turns OFF/ON, and controls volume. Short knob controls squelch. PC/IF – connect an optional PC interface cable here to use the scanner with your computer. Headphone Symbol – attach headphones with 1/8” jack here.
20-428 Owner’s Manual install your scanner You can mount your multi Trunking scanner in your vehicle, install it for mobility, or install it as a base station. mounting your scanner in your dashboard If you are unsure about how to install your scanner in your vehicle, consult your automobile manufacturer, dealer, or a qualified installer. Before installing, confirm your scanner fits in the desired mounting area and you have all the necessary materials.
20-428 Owner’s Manual 6. Slide the scanner into the bracket, aligning the scanner’s holes with the holes in the bracket, and then screw the mounting knobs into the scanner. Note: When drilling holes, be sure to avoid obstructions behind the mounting surface. Consult a qualified installer if in doubt. using your scanner as a base station You can place your scanner on a desk, shelf, or table to use it as a base station.
20-428 Owner’s Manual 3. Connect the red wire of the supplied DC power cord to a voltage source that turns on and off with the ignition switch, such as a spare accessory terminal in your vehicle’s fuse box. 4. Insert the power cord’s barrel plug into the scanner’s DC 13.8V jack. 5. Reconnect the cable to the negative (–) terminal of your vehicle’s battery. Note: You must use a power source that supplies 12V DC and delivers at least 600mA.
20-428 Owner’s Manual your vehicle. You may also want to connect an external antenna if you use your scanner as a base station. Your local RadioShack store sells a variety of antennas. Always use 50-ohm coaxial cable, such as RG-58 or RG-8, to connect an outdoor antenna. For lengths exceeding 50 feet, use RG-8 low-loss dielectric coaxial cable. If your coaxial cable does not have a BNC connector, you will also need a BNC adapter (not supplied).
20-428 Owner’s Manual Signal Stalker II – searches nearby strong signals quickly. See “Signal Stalker II”. Preprogrammed Search Banks – allow you to listen to frequencies and decide which frequencies you want to store when you are ready to program the scanner. See “Searching a Preprogrammed Frequency Range”. Manual Tuning – allows you to manually move through the entire range of available frequencies. (See “Specifications” for a list of the available frequency Ranges.
20-428 Owner’s Manual be heard as a low “hum” in the background of a voice transmission. DCS (DC) mode DCS mode sets the scanner to receive transmissions using frequency modulation (FM) with Digital Coded Squelch (DCS) subaudible data signaling. DCS is very similar to CTCSS, except that a digital code is transmitted instead of an audio tone. Like CTCSS, DCS allows multiple users to share a single radio frequency without hearing each other’s transmissions.
20-428 Owner’s Manual • For example, a valid fleet-subfleet ID identifying all detectives within a police department might be 000-12, where 000 identifies all police users and 12 identifies the Detective division. • Trunking the scanner to an active control channel while in Motorola mode will display the Motorola System. ID and the approximate control channel message decode success rate.
20-428 Owner’s Manual LTR mode You can set your scanner so it decodes the talk group IDs used with LTR (E.F. Johnson) systems. This setting is called the LTR mode. LTR frequencies are organized in a specific order. Each frequency is assigned a Home Repeater Number (HR). For the scanner to correctly switch to an active frequency, you must program the frequencies in HR order, starting with Memory X01 in the selected bank.
20-428 Owner’s Manual You can set your scanner to change the way it receives signals. These settings, called open mode and closed mode, affect how the scanner receives signals from communications systems that use some type of closed squelch (such as Motorola, EDACS, and LTR systems). Notes: • In open mode, you hear all active talk groups except those you specifically exclude, making it easy to hear everything going on. In closed mode, you hear only those talk groups you specify.
20-428 Owner’s Manual 2. Turn SQ fully counterclockwise, then turn SQ clockwise until the hissing sound stops. 3. To turn off the scanner, turn VOL counterclockwise to OFF. Notes: • The scanner does not scan if there are no frequencies stored in channels. If the scanner does not scan and you have already stored frequencies in channels, turn SQ further clockwise. • If the scanner picks up unwanted, partial, or very weak transmissions, turn SQ clockwise to decrease the scanner’s sensitivity to these signals.
20-428 Owner’s Manual downward one by one. 2. Press PGM. M changes to P. 3. Use the number keys and •/DELAY to enter the frequency (including the decimal point) you want to store. If you make a mistake, press CLEAR to delete a single digit or press and hold CLEAR about 2 seconds to delete all digits. 4. Press ENT to store the frequency into the channel. Notes: • If you made a mistake in Step 3, Invalid Freq. briefly appears and the scanner beeps when you press ENT. Start again from Step 3.
20-428 Owner’s Manual You can also set a special search code up that will instantly decode the CTCSS or DCS code on a received transmission. Channels programmed with the search code will receive all traffic on the channel, and will instantly decode and display any CTCSS or DCS code that is found with the transmission. You can then store the found code in the channel memory with one keystroke.
20-428 Owner’s Manual 77.0 Hz 107.2 Hz 151.4 Hz 183.5 Hz 225.7 Hz 79.7 Hz 110.9 Hz 156.7 Hz 186.2 Hz 229.1 Hz 82.5 Hz 114.8 Hz 159.8 Hz 189.9 Hz 233.6 Hz 85.4 Hz 118.8 Hz 162.2 Hz 192.8 Hz 241.8 Hz 88.5 Hz 123.0 Hz 165.5 Hz 196.6 Hz 250.3 Hz 91.5 Hz 127.3 Hz 167.9 Hz 199.5 Hz 254.
20-428 Owner’s Manual channel transmissions, trunk IDs, or banks. assigning a text tag to a channel 1. Press MAN, enter the channel number where you want to enter the text, then press MAN again. M and the bank and channel number appear at the upper left corner of the display (for example: M100). 2. Press PROG. M changes to P. 3. Press TEXT. The cursor appears at the third line. 4. Enter the text using the numeral keys (see “Text Input Chart”).
20-428 Owner’s Manual 7. Press ENT to store. assigning a text tag to a bank 1. Press PROG. 2. Press FUNC then press bank number. Bank X (0 through 9) selected. Fn+CLR to delete all frequencies, TEXT to edit tag appears. 3. Press TEXT, then enter the text using the keypad. 4. Press ENT to store. text input chart Notes: • To access the numbers, after you press TEXT (when you assign the text tag to a channel) or you press FUNC and bank number (when you assign the text tag to a bank), press 1.
20-428 Owner’s Manual CLEAR Back Space finding and storing active frequencies You can search for transmissions in the scanner’s preprogrammed search bank. The search bank is divided into seven search bands. You can change the search range of Bank SR6 manually by setting the lower and higher ends of the search range. Notes: • You can use the scanner’s delay feature while searching the search bank. See “Using Delay”. • The scanner does not search locked-out frequencies while searching ranges.
20-428 Owner’s Manual band charts search bank: SR0 marine band Note: Two frequencies are assigned in one channel in some Marine frequencies. For example, 157.000 and 161.600 are assigned in Channel 20. Receive mode: FM Ch. Frequency (MHz) Ch. Frequency (MHz) 01 156.0500 05 156.2500 06 156.3000 07 156.3500 08 156.4000 09 156.4500 10 156.5000 11 156.5500 12 156.6000 13 156.6500 14 156.7000 15 156.7500 16 156.8000 17 156.8500 18 156.9000 19 156.9500 20 157.0000 21 157.
-428 Owner’s Manual search bank: SR1 CB band Receive mode: AM Ch. Frequency (MHz) Ch. Frequency (MHz) 01 26.9650 02 26.9750 03 26.9850 04 27.0050 05 27.0150 06 27.0250 07 27.0350 08 27.0550 09 27.0650 10 27.0750 11 27.0850 12 27.1050 13 27.1150 14 27.1250 15 27.1350 16 27.1550 17 27.1650 18 27.1750 19 27.1850 20 27.2050 21 27.2150 22 27.2250 23 27.2550 24 27.2350 25 27.2450 26 27.2650 27 27.2750 28 27.2850 29 27.2950 30 27.3050 31 27.
20-428 Owner’s Manual 23 151.8200 24 151.8800 25 151.9400 26 154.5700 27 154.6000 search bank: SR3 police/fire band Receive Mode: FM Group Frequency (MHz) Step (kHz) 0 33.420 – 33.980 20 37.020 – 37.420 20 39.020 – 39.980 20 42.020 – 42.940 20 44.620 – 45.860 40 45.880 45.900 1 45.940 – 46.060 40 46.080 – 46.500 20 153.770 – 154.130 60 154.145 – 154.445 15 154.650 – 154.950 15 155.010 – 155.370 60 155.415 – 155.700 15 155.730 – 156.210 60 158.730 – 159.210 60 166.
20-428 Owner’s Manual step. Some scanner designs do this without showing the correct step in the display. This scanner will show the actual tuned frequency in the display. Because steps are so close together, the audio quality will not be affected by the offset. search bank: SR5 amateur band Receive mode: FM Group Frequency (MHz) Step (kHz) 0 28.0000 – 29.7000 5 1 50.0000 – 54.0000 5 2 144.0000 – 148.0000 5 3 222.0000 – 225.0000 5 4 420.0000 – 450.0000 12.5 5 1240.0000 – 1300.0000 6.
20-428 Owner’s Manual • You can copy and save a frequency into a specified bank, channel, or priority channel when the scanner finds an active frequency. See “Using Frequency Copy” to save the frequency. The frequency copy works only in search banks 1 through 6. • While the scanner is searching, you can use the seek search by pressing FUNC then 7. Seek Search ON. appears on the bottom line about 2 seconds. When Seek Search ON. disappears, the scanner displays S mark.
20-428 Owner’s Manual The FCC (Federal Communications Commission) has allocated channels for use by the National Oceanic and Atmospheric Administration (NOAA). Regulatory agencies in other countries have also allocated channels for use by their weather reporting authorities. NOAA and your local weather reporting authority broadcast your local forecast and regional weather information on one or more of these channels.
20-428 Owner’s Manual priority channel and weather priority operation is enabled (see “Priority”). In this mode all alerts are received. FIPS settings are ignored. • The scanner sounds an alert or beep when it receives the SAME code. If you do not stop the alert (or beep) for five minutes, the alert stops and the scanner beeps every ten seconds. If the scanner receives a new message after five minutes, it sounds the alert or beep.
20-428 Owner’s Manual You can copy a frequency into a specified channel when the scanner stops on that frequency during search mode or manual tuning. 1. Press FUNC then PROG when you find a frequency. Store in ChXXX ? appears on the bottom line. After about 1 second, the frequency to be copied flashes. 2. Press the desired bank and the channel number where you want to store the frequency. The display indicates the bank and channel number. After about 1 second, the frequency to be copied flashes. 3.
20-428 Owner’s Manual Your scanner’s Signal Stalker II feature provides a powerful new tool for you to rapidly detect, monitor and store frequencies for nearby radio transmissions. The Signal Stalker II feature is similar in functionality to portable frequency counters that cost much more than your scanner, but provides many advantages over typical portable frequency counters.
20-428 Owner’s Manual frequencies while searching all bands and 50 frequencies while searching Police/Fire frequencies. Signal Stalker II functions by rapidly sweeping through the RF spectrum in 1 MHz segments. If RF signal energy is detected in a 1 MHz segment, Signal Stalker II will sweep through the 1MHz segment in finer steps until the source of the RF signal energy is found. Certain segments of RF spectrum are used by high power transmitters, such as paging transmitters.
20-428 Owner’s Manual example to turn bank 1 on again, press 1. Notes: • You cannot turn off all banks. There must be at least one active bank. •You can manually select any channel in a bank, even if the bank is turned off. monitoring a single channel/power save circuit You can monitor a single channel with your scanner by navigating to that channel while in manual mode. The scanner will receive traffic on the selected frequency.
20-428 Owner’s Manual 4. Press PROG to enter the program mode. M changes to P. 5. Press FUNC. 6. Press CLEAR. The frequency number changes and 0.0000 appears. deleting all frequencies in a channel bank 1. Press PROG. 2. Press FUNC then the bank number you want to clear. Bank X selected. Fn+CLR to delete all frequencies. TEXT to edit tag appears. 3. Press FUNC then CLEAR. Clear entire bank? Press 1 to clear all, any other key aborts appears. 4. Press 1 to clear the selected bank’s all channel memory.
20-428 Owner’s Manual to lo. reviewing locked-out channels To review all locked out channels, press MAN. Then repeatedly alternate between pressing FUNC and then L/OUT to view each locked-out channel. When you finish reviewing locked-out channels, press MAN. locking out frequencies To lock out a frequency during a search, press L/OUT when the scanner stops on that frequency. The scanner locks out the frequency, then continues searching.
20-428 Owner’s Manual 2. Select the search bank in which you want to clear all locked-out frequencies. 3. Press FUNC then press L/OUT. Lockout list appears. 4. Press FUNC then 6. Clear entire list ? Press 1 to clear all, any other key aborts appears. Press 1 to clear all locked-out frequencies. List cleared. appears for about 2 seconds. Press any key other than 1 to cancel clear. priority In addition to the 1,000 programmable memory channels, the scanner has one priority channel.
20-428 Owner’s Manual To program a weather channel as the priority channel: 1. Press WX. 2. Select the weather channel you want to program as the priority channel. 3. Press FUNC then PRI. The display flashes two times. To turn on the priority feature, press PRI so pri changes PRI on the display while scanning. If the scanner detects activity on the priority channel, Priority Channel appears.
20-428 Owner’s Manual Note: MO (MOT), ED, and LT modes are not available when the scanner tunes up or down through the frequency ranges in which the trunking operation is not used. using the attenuator To reduce interference or noise caused by strong signals, you can reduce the scanner’s sensitivity to these signals. There are two attenuator modes in your scanner. One is normal attenuator mode in which you set the attenuator in each channel or each band/group in the search and tune mode.
20-428 Owner’s Manual changing the display contrast 1. Press MAN. 2. Press FUNC then 9. Use Up/Down keys to set contrast, ENTER key saves. appears. 3. Press /¥ or ¥/ to select the contrast. 4. Press ENT to set the display contrast. cloning the programmed data You can transfer the programmed data to and from another PRO-2055 or PRO-97 scanner using an optional connecting cable with 1/8-inch (3.5mm) phone plugs on both ends (not supplied, available at your local RadioShack store).
20-428 Owner’s Manual To receive trunking signals, you must store all the trunking control frequencies for Motorola systems or all the trunking group frequencies for EDACS and LTR in one bank (see “Storing Known Frequencies into Channels”) and input ID codes in the ID memory (see “Storing Talk Group IDs”). Your PRO-2055 automatically calculates Motorola voice channel frequencies when it decodes the control channel. This eliminates the need to enter all the Motorola group frequencies.
20-428 Owner’s Manual each transmission to identify talk groups. setting squelch for trunking mode Your scanner automatically mutes the audio during trunk scanning when it decodes control channel data. However, we recommend you turn SQ clockwise and leave it set to a point just after the rushing sound stops. This lets the scanner quickly acquire the data channel.
20-428 Owner’s Manual 5. Enter the desired trunking frequency then press ENT to store. 6. To enter additional trunking frequencies as subsequent channels in the same bank, press PROG or /¥ to access the next open channel then enter the frequencies. (See “Storing Known Frequencies into Channels”). 7. Press SCAN to start scanning. Notes: • If you enter a frequency that has already been entered, the scanner sounds an error tone and displays Dupl. Freq. and the channel number that has been duplicated.
20-428 Owner’s Manual press ENT. Confirm the entry. If it is incorrect, press the number keys again to set the base frequency. After you confirm the input, press ENT again. 6. While O in Offset blinks, if necessary, enter the offset number and press ENT. Confirm the entry. If it is incorrect, then press the number keys again to set the frequency. After you confirm the input, press ENT again. 7. While S in Step blinks, repeatedly press /¥ or ¥/ to select the step number, 5.0, 6.25, 10.0, 12.5, 15.0, 18.
20-428 Owner’s Manual 1. Press PROG then TRUNK. 2. For each bank you want to program, repeatedly press FUNC. Then /¥ or ¥/ to select the bank. 3. Press FUNC. Then press 8. Size Code Setting appears. 4. Enter the size code supplied with the Type I system information, referring to the instruction that appears on the display. If the information was not supplied, try the following common fleet maps.
20-428 Owner’s Manual There are 10 talk group ID banks and each ID bank has 5 sub-banks. Each sub-bank has 30 ID locations. You can program up to 150 talk group IDs in each bank, so you can program up to 1,500 talk group IDs in 10 banks. When the scanner stops on a transmission in the Motorola, EDACS, or LTR mode, it checks to see if the ID has been stored. In the closed mode, the scanner only stops on the transmission and displays its text tag if you have stored and not locked out the ID.
20-428 Owner’s Manual 10. Press SCAN to start scanning. Notes: • If you made a mistake in Step 4, Invalid ID value appears and the scanner beeps when you press ENT. Start again at Step 3. • You can enter either a decimal or AFS code for ED (EDACS) IDs. The default setting is decimal ID entry. When you press FUNC then 2, AFS Format appears for about 2 seconds. Now you can enter the ID code with AFS format. If you entered an ID code that is already stored in another ID channel, Dupl. ID of X-XX appears.
20-428 Owner’s Manual 1. Press PROG. Note: You can only lock out talk group IDs when the scanner is in the closed mode (see “Open and Closed Modes”). 2. Press TRUNK. 3. Press FUNC, /¥ or ¥/ to move to the desired bank. 4. Press /¥ or ¥/ to select the ID memory. 5. Press L/OUT to lock out the ID. lo changes to LO. 6. To remove the lockout from a trunking ID, manually select the ID memory, and press L/OUT. LO changes to lo.
20-428 Owner’s Manual 1. Press PROG then TRUNK. 2. Press FUNC. Then L/OUT. The locked out ID appears. If the ID memory bank has no locked-out ID, you hear the low beep tone. clearing talk group IDs 1. Press PROG then TRUNK. 2. Press FUNC, /¥ or ¥/ to select ID memory. 3. Press FUNC then CLEAR. clearing all talk group IDs in a single bank You can clear all talk group IDs within a bank.
20-428 Owner’s Manual care Keep the scanner dry; if it gets wet, wipe it dry immediately. Use and store the scanner only in normal temperature environments. Handle the scanner carefully; do not drop it. Keep the scanner away from dust and dirt, and wipe it with a damp cloth occasionally to keep it looking new. replacing the fuse First, turn off the scanner and your vehicle’s ignition. Make sure you replace the fuse only with another fuse of the same type and rating (2-amp, fast-acting glass fuse).
20-428 Owner’s Manual 894– 960 MHz (in 6.25 kHz steps) 1240–1300 MHz (in 6.25 kHz steps) Memory channels 1000 Channel memory banks 10 Number of memory channels per bank 100 Talk group ID memories 1,500 ID memory banks 10 Sub-banks per bank 5 Number of memory IDs per sub-bank 30 Sensitivity (20 dB S/N): FM: 25–54 MHz 0.3 µV 108 –136.99166 MHz 0.3 µV 137–174 MHz 0.5 µV 216–225 MHz 1 µV 406–512 MHz 0.5 µV 806–960 MHz 0.7 µV 1240–1300 MHz 0.7 µV AM: 25–54 MHz 1 µV 108–136.
20-428 Owner’s Manual IF Rejection: 380.8 MHz at 154.1 MHz 60 dB 21.4 MHz at 154.1 MHz 100 dB Squelch Sensitivity: Threshold (FM and AM) 0.5 µV Tight (FM) 25 dB Tight (AM) 20 dB Antenna Impedance 50 Ohms Audio Output Power (10% THD) 1.5 W Built-in Speaker 3 Inches (77 mm) (8-ohm, Dynamic Type) Power Requirement 13.8 V Current Drain (Squelched) 600 mA Physical Dimensions (HWD) 2 1/4 x 7 1/4 x 5 5/16 Inches (55 x 185 x 135 mm) Weight (without cabinet and accessories) 27.7 oz.
20-428 Owner’s Manual 3. Press 1. 4. Press ENT. Initializing please stand by. appears for about 5 seconds. Note: Do not turn off the scanner until the initialization is complete. When the initialization is complete, M000 appears on the top line of the display. Bank 0 Ch 00 appears on the third line. The FCC wants you to know This equipment has been tested and found to comply with the limits for a scanning receiver, pursuant to Part 15 of the FCC Rules.
20-428 Owner’s Manual This scanner has been designed to prevent reception of illegal transmissions. This is done to comply with the legal requirement that scanners be manufactured so as to not be easily modifiable to pick up those transmissions. Do not open your scanner’s case to make any modifications that could allow it to pick up transmissions that are illegal to monitor. Doing so could subject you to legal penalties. In some areas, mobile use of this scanner is unlawful or requires a permit.
20-428 Owner’s Manual FAQs (Frequently Asked Questions) The scanner is not working at all. What’s wrong? The AC or DC adapter or DC cable might not be connected. Be sure the adapter/cable’s barrel plug is fully inserted into the PWR DC 13.8V jack. The center tip of the adapter/cable’s barrel plug must be set to positive. The scanner does not receive any stations or reception is poor. What’s wrong? The scanner might need to reset or initialize.
