Radio_Shack_Scanner

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FEATURES

Your new RadioShack PRO-66 50-Channel Direct Entry Programmable Scanner lets you in on all the action! This scanner gives you direct ac- cess to more than 28,000 frequencies that include the police depart- ment, fire department, ambulance, amateur radio, and transportation services. You can select up to 50 channels for your scanner to scan and you can change your selection at any time.

The secret to your scanner???s ability to scan so many frequencies is its custom-designed microprocessor ??? a tiny, built-in computer. Your scanner also has these special features:

8-Digit Liquid Crystal Display ??? shows channel and frequency num- bers as well as mode and status indicators.

50 Programmable Channels ??? let you store frequencies into the scan- ner???s memory.

Band Search ??? lets you search the frequency bands for active fre- quencies, and direct the search upward or downward through the bands.

Direct Search ??? lets you search from the current frequency.

Lockout Function ??? lets you set your scanner to skip over specified channels while scanning.

Search Skip ??? lets you select up to 20 frequencies for the scanner to skip during a band or direct search to avoid unwanted frequencies.

Monitor Memory ??? lets you temporarily store a frequency you locate during a frequency search, which you can then transfer into a channel.

Two-Second Scan Delay ??? lets you delay scanning for 2 seconds be- fore moving to another channel, so you can hear more replies.

Weather Band Key ??? scans seven preprogrammed weather frequen- cies so you can hear about current weather conditions.

Keylock ??? prevents you from accidentally changing the scanner???s pro- gramming.

?? 1996 Tandy Corporation.

RadioShack is a trademark used by Tandy Corporation.

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Memory Backup ??? keeps the channel frequencies stored in memory for up to 1 hour during a power loss.

Low Battery Alarm ??? lets you know when the batteries get low.

Three Power Sources ??? let you power the scanner from internal bat- teries, a standard AC outlet (using an optional AC adapter), or a vehi- cle???s battery (using an optional DC power cord).

Ni-Cd Battery Charging Circuit ??? lets you recharge nickel-cadmium batteries while they are inside the battery compartment.

BNC Connector ??? lets you connect the supplied flexible antenna or an optional outdoor antenna.

Audio Output Jack ??? lets you connect optional earphones or head- phones so you can listen privately, or external speakers so you can lis- ten in a noisy area.

Your scanner can receive all of these bands:

???29???54 MHz (VHF Low and 6-Meter Ham Band)

???137???144 MHz (Government)

???144???148 MHz (2-Meter Ham Band)

???148???174 MHz (VHF High)

???406???450 MHz (Ham radio and government)

???450???470 MHz (UHF Standard)

???470???512 MHz (UHF ???T??? Band)

???806???823.9375 MHz (Public Service)

???851???868.9375 MHz (UHF Hi)

???896.1125???956 MHz (UHF Hi, 33 Centimeter Amateur Radio)

In addition, your scanner is preprogrammed with the following weather service channels:

???162.400 MHz

???162.425 MHz

???162.450 MHz

???162.475 MHz

???162.500 MHz

???162.525 MHz

???162.550 MHz

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This owner???s manual also includes the section ???Guide to the Action Bands??? on Page 30, which lets you target services in your area by giving you frequency ranges to search. You can then store any of these fre- quencies into memory for easy scanning.

For your records, we recommend you record your scanner???s serial num- ber in the space provided. The serial number is on the scanner???s back panel.

Serial Number _____________

FCC NOTICE

Your scanner might cause radio or TV interference even when it is op- erating properly. To determine whether your scanner is causing the in- terference, turn off your scanner. If the interference goes away, your scanner is causing it. Try the following methods to eliminate the interfer- ence:

???Move your scanner away from the receiver

???Connect your scanner to an outlet that is on a different electrical circuit from the receiver

???Contact your local RadioShack store for help

If you cannot eliminate the interference, the FCC requires that you stop using your scanner.

Note: Mobile use of this scanner is unlawful or requires a permit in some areas. Check the laws in your area.

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SCANNING LEGALLY

Your scanner covers frequencies used by many different groups includ- ing police and fire departments, ambulance services, government agen- cies, private companies, amateur radio services, military operations, pager services, and wireline (telephone and telegraph) service provid- ers. It is legal to listen to almost every transmission your scanner can receive. However, there are some transmissions you should never in- tentionally listen to. These include:

???Telephone conversations (either cellular, cordless, or other private means of telephone signal transmission)

???Pager transmissions

???Any scrambled or encrypted transmissions

According to the Electronic Communications Privacy Act (ECPA), you are subject to fines and possible imprisonment for intentionally listening to, using, or divulging the contents of such a transmission unless you have the consent of a party to the conversation (unless such activity is otherwise illegal).

RadioShack encourages responsible, legal scanner use.

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CONTENTS

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Using Internal Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Important Information about the External Power Jacks . . . . . . . . 9 Using Standard AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Using Vehicle Battery Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Charging Nickel-Cadmium Batteries . . . . . . . . . . . . . . . . . . . . . . 13 Connecting the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Connecting an Optional Antenna . . . . . . . . . . . . . . . . . . . . . . 14 Connecting an Earphone/Headphones . . . . . . . . . . . . . . . . . . . . 15 Listening Safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Traffic Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Connecting an Extension Speaker . . . . . . . . . . . . . . . . . . . . . . . 16 Attaching the Belt Clip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Understanding Your Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

A Look at the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

A Look at the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Turning on the Scanner and Setting Squelch . . . . . . . . . . . . . . . 20 Storing Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Searching For and Storing Active Frequencies. . . . . . . . . . . . . . 22 Band Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Direct Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Search Skip Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Listening to the Monitor Memory. . . . . . . . . . . . . . . . . . . . . . . . . 25 Moving a Frequency from the Monitor Memory to a Channel . . . 25 Scanning the Stored Channels . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Using the 2-Second Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Locking Out Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Manually Selecting a Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Listening to the Weather Band . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Using the Keylock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

A General Guide to Scanning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Guide to Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 National Weather Frequencies . . . . . . . . . . . . . . . . . . . . . . . . 29 Birdie Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Guide to the Action Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Typical Band Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Primary Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Specified Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Band Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Avoiding Image Frequencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Frequency Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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PREPARATION

POWER SOURCES

You can power your scanner from any of three sources:

???Internal batteries (not supplied)

???Standard AC power (using an optional AC adapter)

???Vehicle battery power (using an optional DC power cord)

USING INTERNAL BATTERIES

You can power your scanner with four AA batteries. For the longest op- eration and best performance, we recommend alkaline batteries (such as Cat. No. 23-552). Or, you can use rechargeable nickel-cadmium bat- teries (Cat. No. 23-125).

Warning: The scanner has a built-in circuit that lets you recharge nickel-cadmium batteries inside the battery compartment. However, you must never use this circuit when you have installed non-rechargeable batteries in the scanner. Be sure to read ???Important Information about the External Power Jacks??? on Page 9 and ???Charging Nickel-Cadmium Batteries??? on Page 13.

Follow these steps to install or replace batteries.

1.If the scanner is on, turn VOLUME/OFF counterclockwise until it clicks to turn it off.

2.Press the tab on the battery compartment cover, and lift off the cover.

3.Remove any old batteries from the compartment and cover.

Caution: Always dispose of old non-rechargeable batteries promptly and properly. Do not bury or burn them.

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The POWER jack powers the scanner and disconnects the internal bat- teries. You can use this jack to connect an external power source (AC adapter or DC power cord) regardless of the type of batteries you install.

The CHARGE jack supplies power to operate the scanner and also charges the internal batteries. Use the CHARGE jack only when you in- stall rechargeable nickel-cadmium batteries.

Warning: Never use the CHARGE jack with non-rechargeable batteries. If you try to recharge non-rechargeable batteries, they become very hot and could explode.

USING STANDARD AC POWER

To power the scanner from AC power, you need an AC adapter such as Cat. No. 273-1652 (not supplied).

Warning: Do not use an AC adapter???s polarized plug with an extension cord, receptacle, or other outlet unless the blades can be fully inserted to prevent blade exposure.

Cautions:

???You must use an AC adapter that supplies 12 volts and delivers at least 200 milliamps. Its center tip must be set to positive, and its plug must correctly fit the scanner???s POWER and CHARGE jacks. The recommended adapter meets these specifications. Using an adapter that does not meet these specifications could damage the scanner or the adapter.

???Be sure you connect the AC adapter to the scanner before you connect it to a standard AC outlet. Then disconnect the adapter from the AC outlet before you disconnect it from the scanner.

Note: The scanner receives a 12-volt input at the CHARGE or POWER jack and reduces it to the 6 volts required by the scanner.

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USING VEHICLE BATTERY POWER

You can power the scanner from your vehicle???s cigarette lighter socket with an optional DC cigarette lighter power cord (such as Cat. No. 270- 1533).

Cautions:

???The recommended DC power cord supplies 12 volts and delivers at least 200 milliamps. Its center tip is set to positive and its plug properly fits the scanner???s POWER and CHARGE jacks. Using a power cord that does not meet these specifications could damage the scanner or the power cord.

???To protect your vehicle???s electrical system, always plug the power cord into the scanner before you plug it into your vehicle???s ciga- rette-lighter socket. Always unplug the power cord from the vehi- cle???s cigarette lighter socket before you unplug it from the scanner.

Note: The scanner receives a 12-volt input at the CHARGE or POWER jack and reduces it to the 6 volts required by the scanner.

1.Plug the power cord???s barrel plug into your scanner???s POWER jack.

2.Plug the other end of the power cord into your vehicle???s cigarette- lighter socket.

Notes:

???If you installed rechargeable nickel-cadmium batteries in the scanner, remove the plastic cap from the CHARGE jack and put the cap in the POWER jack. Connect the DC power cord to the CHARGE jack. This powers the scanner and recharges the bat- teries at the same time. See ???Charging Nickel-Cadmium Batter- ies??? on Page 13.

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???If the scanner does not operate properly when you use a DC power cord, unplug the power cord from the cigarette lighter socket and clean the socket to remove ashes and debris. If it still does not operate properly, check the fuse in the power cord.

CHARGING NICKEL-CADMIUM BATTERIES

The scanner has a built-in circuit that lets you recharge nickel-cadmium batteries while they are in the scanner. To charge the batteries, remove the plastic cap from the scanner???s CHARGE jack and put the cap in the POWER jack. Then connect an AC adapter or DC power cord to the jack (see ???Using Standard AC Power??? on Page 10 or ???Using Vehicle Battery Power??? on Page 12).

Warning: Do not connect either an adapter or power cord to the scan- ner???s CHARGE jack if you installed non-rechargeable batteries (stan- dard, extra-life, or alkaline). Non-rechargeable batteries become hot and can even explode if you try to recharge them.

It takes about 10 to 18 hours to recharge batteries that are fully dis- charged. You can operate the scanner while recharging nickel-cadmium batteries, but the charging time is lengthened.

The first time you use nickel-cadmium batteries, charge them at least 24 hours to bring them to a full charge.

Notes:

???Nickel-cadmium batteries last longer and deliver more power if you occasionally let them fully discharge. To do this, simply use the scanner until it begins beeping every 15 seconds or appears in the display.

???To prevent damaging nickel-cadmium batteries, never charge them in an area where the temperature is above 90??F or below 40??F.

Important: At the end of a rechargeable battery???s useful life, it must be recycled or disposed of properly. Contact your local, county, or state hazardous waste management authorities for information on recycling or disposal programs in your area. Some options that might be available are: municipal curb-side collection, drop-off boxes at retailers, recycling collection centers, and mail-back programs.

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CONNECTING THE ANTENNA

Follow these steps to attach the supplied flexible antenna to the connec- tor on the top of your scanner.

1.Align the slots around the antenna???s connector with the tabs on the jack.

2.Press the antenna down over the jack and rotate the antenna???s base clockwise until it locks into place.

Connecting an Optional Antenna

The antenna connector on your scanner makes it easy to use the scan- ner with a variety of antennas. Instead of the supplied antenna, you can attach a different one, such as an external mobile antenna or outdoor base antenna. 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 over 50 feet, use RG-8 low-loss dielec- tric coaxial cable. If your antenna???s cable does not have a BNC connec- tor, you will also need a BNC adapter (available at your local RadioShack store).

Warning: Use extreme caution when installing or removing an outdoor antenna. If the antenna starts to fall, let it go! It could contact overhead power lines. If the antenna touches a power line, contact with the anten- na, mast, cable, or guy wires can cause electrocution and death! Call the power company to remove the antenna. Do not attempt to do so yourself.

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CONNECTING AN EARPHONE/

HEADPHONES

For private listening, you can plug an earphone or mono headphones (such as RadioShack Cat. No. 33-175 or 20-210) into the jack on top of your scanner. This automatically disconnects the internal speaker.

Listening Safely

To protect your hearing, follow these guidelines when you use an ear- phone or headphones.

???Do not listen at extremely high volume levels. Extended high- volume listening can lead to permanent hearing loss.

???Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume to a comfortable level.

???Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing.

Traffic Safety

Do not wear an earphone or headphones while operating a motor vehi- cle or riding a bicycle. This can create a traffic hazard and is illegal in some areas.

Even though some earphones and headphones are designed to let you hear some outside sounds when listening at normal volume levels, they still present a traffic hazard.

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UNDERSTANDING YOUR SCANNER

A LOOK AT THE KEYPAD

Your scanner???s keys might seem confusing at first, but this information should help you understand each key???s function.

SCAN ??? scans through the stored channels.

MANUAL ??? stops scanning and lets you directly enter a channel num- ber or frequency.

DELAY ??? programs a 2-second delay for the selected channel.

CLEAR/??? ??? erases an incorrect entry or an error. Enters the decimal point in a frequency.

MON/0 ??? stores frequencies into and accesses the monitor memory. Enters the number 0 for a channel or a frequency.

WX/E ??? scans through the preprogrammed weather channels. Stores a key entry into memory.

KEYLOCK ??? locks/unlocks the keypad to prevent accidental program changes.

t and s ??? enter the down or up search mode direction.

HOLD/BAND ??? pauses the frequency search. Searches the selected band.

1-9 ??? enters the numbers for a channel or a frequency.

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A LOOK AT THE DISPLAY

The display has several indicators that show the scanner???s current op- erating mode. A quick look at the display will help you understand how to operate your scanner.

SRCH ??? appears during a band search ( b also appears) or a direct search (d also appears).

SCAN ??? appears when you scan channels.

MAN ??? appears when you manually select a channel.

MON ??? appears when you listen to a monitor memory.

WX ??? appears when you scan the preprogrammed weather channels.

??? flashes when you lock the keypad.

??? flashes when batteries are low.

D ??? appears when you program a channel for a 2-second delay before scanning or when you listen to a channel programmed with the delay feature.

L ??? appears when you manually select a locked channel, or during a search hold when the frequency is stored in search skip memory.

t and s ??? indicate the search or weather scan direction.

Error ??? appears when you make an entry error.

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Notes:

???If you make a mistake in Step 2, Error appears on the display and the scanner beeps three times. Simply start again from Step 2.

???Your scanner automatically rounds the entered frequency to the nearest valid frequency. For example, if you try to enter a fre- quency of 151.473, your scanner accepts it as 151.475.

4.Repeat Steps 1 - 3 to program more channels. Or, if you want to program the next channel in sequence, press MANUAL and repeat Steps 2 and 3.

Notes:

???VHF band frequencies (30-300 MHz) are found at .005 MHz steps. UHF band frequencies (300-3000 MHz) are found at .0125 MHz steps.

???Without battery or external adapter power, the scanner protects the frequencies stored in memory for about 60 minutes.

SEARCHING FOR AND STORING ACTIVE

FREQUENCIES

Band Search

A band search lets you search for active transmissions within any one of the eight pre-programmed frequency bands.

Follow these steps to search for active frequencies.

1.Press MANUAL, then HOLD/BAND. The scanner displays the previ- ously selected frequency band for 2 seconds, then automatically starts searching.

2.To select a different frequency band, repeatedly press HOLD/BAND until the desired frequency band appears on the display.

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3.To change the search direction, press t to search downward or s to search upward. b, SRCH, and t or s appear on the display.

4.When the scanner stops on an active frequency, you can do one of the following:

???To store the displayed frequency into the monitor memory, press MON/0. MON appears on the display.

???To continue the search, press t or s.

???To hold the frequency, press HOLD/BAND. H appears on the display. To continue the search, press and hold t or s for about 1 second. Or, you can press HOLD/BAND to continue the search. The scanner briefly displays the frequency band (if you pressed HOLD/BAND), then resumes searching.

Notes:

???If you want to step through the frequencies while H is displayed, press t or s.

???If you tune to a search skip frequency, L appears on the display. See ???Search Skip Memory??? on Page 24.

???If you want to change the frequency band, repeatedly press HOLD/BAND. The selected frequency band is displayed.

Direct Search

You can search up or down for more frequencies from the currently dis- played frequency.

1.Press MANUAL.

2.Use the number keys and CLEAR/??? to enter the frequency (includ- ing the decimal point) where you want to start the search, or enter the channel number containing the starting frequency and press

MANUAL.

3.Press t to search downward or s to search upward from the selected frequency. d, SRCH, and t or s appear on the display.

4.When the scanner stops on a transmission, you can do one of the following:

???To store the displayed frequency into the monitor memory, press MON/0. MON appears on the display.

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???To continue the search, press t or s.

???To hold the frequency, press HOLD/BAND. h appears on the dis- play. To continue the search, press and hold t or s for about 1 second.

Notes:

???If you want to step through the frequencies while h is displayed, press t or s.

??? If you tune to a search skip frequency, L appears on the dis- play (see ???Search Skip Memory??? on Page 24).

???If you press HOLD/BAND, the scanner restarts as a band search. b, SRCH, and t or s appear on the display.

Search Skip Memory

You can skip up to 20 specified frequencies during a band or direct search. This lets you avoid unwanted frequencies or ones you have al- ready stored in a channel.

To skip a frequency, press L-OUT/S/S when the scanner stops on the fre- quency during a band or direct search. The scanner stores the frequen- cy in memory and resumes the search.

To clear a single frequency from skip memory so the scanner can stop on it during a band or direct search, press HOLD/BAND to hold the search, press t or s to select the frequency, then press L-OUT/S/S until L disappears from the display.

To clear all the skip frequencies at once, while in the search mode, press HOLD/BAND, then press and hold L-OUT/S/S until the scanner beeps twice (about 3 seconds).

Notes:

???If you program more than 20 frequencies to skip, each new fre- quency replaces one you stored earlier, starting from the first stored frequency.

???You can select the skipped frequency when the scanner is in the hold mode. The scanner displays L when you select a skipped fre- quency.

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4.Press MON/0. The entered frequency appears, and the channel number starts flashing.

5.Press WX/E. The scanner stores the frequency into the selected channel, and the channel number stops flashing.

SCANNING THE STORED CHANNELS

To scan the stored channels, press SCAN. Your scanner then scans through all non-locked channels (see ???Locking Out Channels??? on Page 27).

Using the 2-Second Delay

Many agencies use a two-way radio system that has a period of several seconds between a query and a reply. To avoid missing a reply, you can program a 2-second delay into any channel. When the scanner stops on an active channel with a programmed delay, it continues to monitor the channel for 2 seconds after the activity stops before resuming scanning.

To program a 2-second delay into a specific channel while the scanner is scanning, manually select the desired channel then press DELAY. D appears on the display.

To program a 2-second delay when the scanner has stopped on an ac- tive channel during scanning, quickly press DELAY while the channel number is displayed. D appears on the display.

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To turn off the 2-second delay on any active channel, press DELAY again while the channel number is displayed. D disappears from the display.

Locking Out Channels

You can increase the effective scanning speed by locking out individual channels that have a continuous transmission, such as a weather chan- nel. To lock out a channel, manually select the channel and press L- OUT/S/S so L appears on the display.

Notes:

???You can still manually select locked out channels.

???You can lock out all channels.

To remove the lock-out from a channel, manually select the channel and press L-OUT/S/S so L disappears from the display.

To remove the lock-out from all channels, press MANUAL, then press and hold L-OUT/S/S until the scanner beeps twice (about 3 seconds).

Note: You cannot remove the lock-out from empty channels.

MANUALLY SELECTING A CHANNEL

You can continuously monitor a single channel without scanning. This is useful if you hear an emergency broadcast on a channel and do not want to miss any details ??? even though there might be periods of si- lence ??? or if you want to monitor a specific channel.

Follow these steps to manually select a channel.

1.Press MANUAL.

2.Enter the channel number.

3.Press MANUAL again.

Or, if your scanner is scanning and stops at the desired channel, press MANUAL one time. (Pressing MANUAL additional times causes your scanner to step through the channels.) To resume automatic scanning, press SCAN. Your scanner then scans through all non-locked channels.

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LISTENING TO THE WEATHER BAND

The FCC (Federal Communications Commission) has allocated 11 channels for use by the National Oceanic and Atmospheric Administra- tion (NOAA). We have preprogrammed your scanner with the seven fre- quencies most commonly used by NOAA (see ???National Weather Frequencies??? on Page 29).

To hear your local forecast and regional weather information, simply press WX/E. Your scanner begins scanning through the weather band, and WX appears on the display.

Your scanner should stop within a few seconds, then you hear the local weather broadcast. If the broadcast is weak, you can press WX/E again to scan through the rest of the weather band.

USING THE KEYLOCK

Once you program your scanner, you can protect it from accidental pro- gram changes by turning on the keylock feature. When locked, the only controls that operate are SCAN, MANUAL, KEYLOCK, VOLUME/OFF, and

SQUELCH.

Note: The keylock does not prevent the scanner from scanning chan- nels.

To turn on the keylock, press and hold KEYLOCK until K flashes on the display. To turn it off, press and hold KEYLOCK until K disappears from the display.

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A GENERAL GUIDE TO SCANNING

Reception of the frequencies covered by your scanner is mainly ???line-of- sight.??? That means you usually cannot hear stations that are beyond the horizon.

GUIDE TO FREQUENCIES

National Weather Frequencies

* Not preprogrammed in this scanner.

Birdie Frequencies

Every scanner has birdie frequencies. Birdies are signals created inside the scanner???s receiver. These operating frequencies might interfere with broadcasts on the same frequencies. If you program one of these fre- quencies, 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.

The birdie frequencies on this unit to watch for are:

To find the birdies in your scanner, begin by disconnecting the antenna and moving it away from the scanner. Make sure that no other nearby radio or TV sets are turned on near the scanner. Use the search function and scan every frequency range from its lowest frequency to the high- est. Occasionally, the searching will stop as if it had found a signal, often without any sound. That is a birdie. Make a list of all the birdies in your scanner for future reference.

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UHF Band

Note: Remote control stations and mobile units operate at 5 MHz higher than their associated base stations and relay repeater units.

Specified Intervals

Frequencies in different bands are accessible only at specific intervals. For example:

BAND ALLOCATION

To help decide which frequency ranges to scan, use the following listing of the typical services that use the frequencies your scanner receives. These frequencies are subject to change, and might vary from area to area. For a more complete listing, refer to the ???Police Call Radio Guide including Fire and Emergency Services,??? available at your local RadioShack store.

BIFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boise (ID) Interagency Fire Cache

BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Business

CAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Civil Air Patrol

CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Citizens Band

CCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common Carrier

CSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventional Systems

CTSB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventional/Trunked Systems

FIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Department

HAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amateur (Ham) Radio

GOVT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Federal Government

GMR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Mobile Radio

GTR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Trunked

IND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Industrial Services

. . . . . . . . . . . . . (Manufacturing, Construction, Farming, Forest Products)

MAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Military Amateur Radio

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MARI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maritime Limited Coast

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Coast Guard, Marine Telephone,

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shipboard Radio, Private Stations)

MARS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Military Affiliate Radio System

MED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Emergency/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 & Highway 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

VERY HIGH FREQUENCY (VHF)???(30 MHz???300 MHz)

VHF Low Band ???(29.7???50 MHz ???in 5 kHz steps)

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 35.020???35.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, PUB, IND, TELM 36.000???36.230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 36.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Spill Cleanup 36.270???36.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

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6-Meter Amateur Band??? (50???54 MHz)

50.00???54.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM

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 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

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173.225???173.5375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . MOV, NEWS, UTIL, MIL 173.5625???173.5875 . . . . . . . . . . . . . . . . . . . . . . . . . .MIL Medical/Crash Crews 173.60???173.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT

70-cm 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

FM-TV Audio Broadcast, UHF Wide Band (470???512 MHz) (Channels 14 through 69 in 6 MHz steps)

Note: Some cities use the 470???512 MHz band for land/mobile service.

Conventional Systems Band ??? Locally Assigned

851.0125???855.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CSB

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

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AVOIDING IMAGE FREQUENCIES

You might discover one of your regular stations on another frequency that is not listed. It might be what is known as an image frequency. For example, you might find a service that regularly uses a frequency of 453.075 also on 474.775.

Occasionally, you might get interference on a weak or distant channel from a strong broadcast 21.7 MHz below the tuned frequency. This is rare, and the image signal is usually cleared whenever there is a broad- cast on the actual frequency.

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) x 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

20-511.fm Page 38 Wednesday, August 4, 1999 2:13 PM

CARE AND MAINTENANCE

Your RadioShack PRO-66 50-Channel Direct Entry Programmable Scanner is an example of superior design and craftsmanship. The fol- lowing 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 fresh batteries of the recommended size and type. Always remove old and weak batteries. They can leak chemicals that destroy electronic circuits.

Handle the scanner gently and carefully. Dropping it can damage circuit boards and cases and can cause the scan- ner to work improperly.

Use and store the scanner only in normal temperature envi- ronments. Temperature extremes can shorten the life of electronic devices, damage batteries, 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 your scanner???s internal components can cause a malfunction and might invalidate the scanner???s warranty and void your FCC authorization to operate it. If your scanner is not operat- ing as it should, take it to your local RadioShack store for assistance.

20-511.fm Page 39 Wednesday, August 4, 1999 2:13 PM

SPECIFICATIONS

Frequency Coverage:

29???54 MHz (in 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???868.9375 MHz (in 12.5 kHz steps) 896.1125???956.0000 MHz (in 12.5 kHz steps)

Channels of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Channels

Sensitivity:

(FM: 20 dB S/N at 3 kHz deviation):

29???54 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4 ??V

137???174 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 ??V

406???512 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 ??V

806???956 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 ??V

Selectivity:

??10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ???6 dB

??17 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ???50 dB

Scan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Channels/Sec.

Search Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Steps/Sec.

Delay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Seconds

Acceptable RF Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . ??6 kHz

IF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . 10.85 MHz and 450 kHz

Squelch Sensitivity:

Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Less than 0.4 mV Tight (S+N)/N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 dB

Built-in Speaker . . . . 19/16 Inches (4 cm) 8 Ohm, 0.5 W, Dynamic Type

Power Requirement . . . . . . . . . . . . . . DC 4 AA Batteries (6.0 VDC), or 4 AA Rechargeable Ni-Cd Batteries (4.8 VDC), or Vehicle Battery DC Power Cord (Cat. No. 270-1533), or AC Adapter (Cat. No. 273-1652)

Current Drain:

Squelched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 mA Full Volume Unsquelched . . . . . . . . . . . . . . . . . . . . . . . . . 125 mA Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . 63/8 ?? 211/16 ?? 19/16 Inches (162 ?? 68.5 ?? 39 mm)

Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.8 oz (250 g) Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.