all | frequencies |
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exhibits | applications |
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manual |
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1 |
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8 | Users Manual | 600.61 KiB | June 04 1999 | |||
1 | ID Label/Location Info | June 04 1999 | ||||||
1 | Parts List/Tune Up Info | June 04 1999 | ||||||
1 | Operational Description | June 04 1999 | ||||||
1 | External Photos | June 04 1999 | ||||||
1 | Schematics | June 04 1999 | ||||||
1 | Test Report | June 04 1999 | ||||||
1 | Internal Photos | June 04 1999 |
1 | 8 | Users Manual | 600.61 KiB | June 04 1999 |
Fcc ID: AAO2101574 APPENDIX 5 USERS MANUAL THIRTY-FOUR (34) PAGE OPERATORS MANUAL FOLLOWS THIS SHEET USERS MANUAL FCC ID: AAOQ2101574 APPENDIX 5
ge I 2471574.tm Page 1 Monday, Jaruary 11, 1999 12:52 PM : | @
F Cat. No. 21-1574 OWNERS MANUAL Please read before using this equipment. a tOne lls Deluxe 4 Watt 40-Channel Mobile CB Radio with Weather Alert and ACE RadioShack.
t
| & 21-1574.fm Page 2 Monday, January 11, 1999 12:52 PM FEATURES Your RadioShack TRC-446 Deluxe 40-
Channel Mobile CB Radio with Weather Alert is a high performance CB that also lets you tune to local and national weather service broadcasts. This CB is perfect for recreational, business, or emergency use. You can call other peo-
ple who have CBs at home, in their vehi-
cles, or at camp sites. You can also connect optional equipment to your CB, such as an external speaker which cre-
ates a PA system; or a DC power supply and base station antenna to use it as a base station in your home. Your CB has these features:
ACE (Audio Clarity Enhancer) sup-
presses noise Jevels while leaving the signal intact during reception. While Convenlent On-Microphone Channel Up/Down Controls let you quickly scan the band for communications. CH-S/NOR/CH-19 Switch lets you quickly tune to emergency Channel 9 or Channel 19 without using the rotary tun-
ing control. Screw-On Microphone Connector ensures rugged operation and long life. PLL (Phase-Locked Loop) Frequency Synthesizer uses a precise frequen-
cy reference crystal to provide reliable and exact tuning. Two Ceramic Fiiters -- provide superi-
oRannel selectivity and prevent adja-
cneeht-channel interference. transmitting, it enhances the signal, proz>,\~
viding you with a significant reduction-n.< Specialized Squelch Circult com-
reception and transmission noise. Sv. NOAA 7-Channel WX Band Receiver lets you tune to seven national weather service frequencies which pro-
vide local weather conditions and fore-
casts. WX/Alert Indicator shows the CB is ready to receive a weather alert signal. Bullt-in SWR Meter helps you tune your antenna system to optimize your CB's performance. RF Gain Control lets you adjust re-
ception to match the strength of the re-
ceived signal. pensates for fading signals and elimi-
nates signa! chopping during reception. Rotary Tuning Control makes chan-
nei selection convenient. Last-Channel Memory tunes to the last selected channel each time you turn on the radio. Lighted SWR/RF/Signal Meter dis-
plays the signal strength and the stand-
ing wave ratio (GWR). Digital Channel Display - makes the selected channel easy to see 1999 Tandy Corporation. All Rights Reserved. RadioShack is a registered trademark used by Tandy Corporation. a 4
ike o-
1
@ 21-1574.fm Page 1 Monday, Janvary $1, 1999 32:52 PM 4 a LT A EE Nolse Blanking reduces the noise occasionally generated by nearby elec-
trical motors or automotive ignition sys-
tems. CBAWX/PA Switch lets you quickly select among normal CB operation, weather mode, or public address mode. RX/TX Indicator shows whether the GB is transmitting or receiving. S/RFISWRICAL Switch lets you quickly change the display of the RF/
Signal Meter to show radio input/output signa! strength, the standing wave ratio of the antenna, or SWR calibration data. FCC INFORMATION The Federal Communications Commis-
sion (FCC) does not require you to have a license to operate this CB. However, the FCC does require that you read and know Part 95 of FCC Aules. These rules apply to the operation of a Class D CB. We have provided a copy of these regu-
lations with your CB. Warning: Do not open your CB to make any internal adjustments. Any internal adjustments can be made only by an au-
thorized service technician. Unauthorized internal adjustments and/
or-modifications can lead to illegal oper-
i Universal Mounting Bracket lets dtion as defined by Part 95 of FCC hicle. Note: To use this CB, you need ayno-
bile or base station antenna (not sup-
plied). Your focal RadioShack store has a wide variety of antennas. For more in-
formation, see Installing an Antenna on Page 7. We recommend you record your CB's serial number here. The number is on the CB's back panel. Serial Number. you mount your CB securely in your ven Rules. Such illegal operation can lead to ONS very serious consequences. To be safe oN and sure:
* Never open your CB's case. Never modify your CB. Your CB might cause TV or radio inter-
ference even when it is operating prop-
erly. To determine whether your CB is causing the interference, tum off your CB. If the interference goes away, your CB is causing it. Try to eliminate the in-
terference by either moving your CB away from the receiver or contacting your local RadioShack store for help. if you cannot eliminate the interference, the FCC requires that you stop using your CB.
lb
| Orisa Page 4 Monday, January 11, 1999 12:52PM
~ ConTENTS IstallatlOn .........cccsecccetcsceeesneneosersonsunrenesscanenessrensaseaansevenueranseseseseneananensanmeanseneanenees Mounting the Microphone Holder . Mounting the TRC-446 .......... Connecting the Microphone Installing an Antenna........ Selecting an Antenna ... Connecting an Antenna .. Using Vehicle Battery Power . Using the CB as a Base Station ... Connecting Optional External Speakers .... fxternal CB Speaker ...... Public Address Speaker .. Adjusting the Standing Wave Ratio . Standing Wave Ratio Chart Operation Turning On the CB and Receiving Transmissions ....
, Transmitting 1
| Listening to Weather Br Weather Alert .... &
Using the Public Address Function 2s CB Operatlon Tp .....cesseeenneed 2) aneeeeee Common Uses for a CB Radio . Business Uses ..........-...-. Personal Uses ... CB Courtesy ............ Using Common 10-Codes . Maximum Range .. Reducing Noise ....... 18 Troubleshooting ........ccsesserenceneee Care and Maintenance .... Replacing the Fuses ... Specifications ODOONNODOAQaAAH
8
e 2i-1574.fm Page 5 Monday, January 11, 1999 42:52 PM |
INSTALLATION Drawing showing 3/4 View of unit with dash bracket over it and MIC bracket on the side MOUNTING THE * the CB is not directly in front of heat-
MICROPHONE HOLDER ing vents Cautions:
Using a Philips screwdriver and the sup-
plied screw and washers, attach the _/@ If you use the TRC-446 in a vehicle, supplied microphone hoider to the CB's Z5 mount it securely to avoid damage left or right side either horizontally or SD to the CB or vehicle or injury to any-
vertically (depending on how you planao.\ one in the vehicle during sudden use it). SS SY starts or stops.
* Do not mount the CB where it could damage or interfere with the proper MOUNTING THE TRC-446 operation of any passive restraint
. safety device (an air bag or seat The most common mounting focation for belt). this CB is under a vehicles dashboard. if you use the TRC-446 as a base sta" _ Follow these steps to mount the CB us-
tion, you can place it on a desk, shelf, Or ing the supplied hardware. table (See Using the CB as a Base Sta-
tion on Page 8). 4. Select a tocation that provides secure mounting. When mounting the CB in a vehicle, Caution: Be careful not to drill into choose a location where: anything behind the mounting sur-
* you can easily reach the CB face.
+ wires and cables are routed away 2 Using the slots in the mounting from the vehicle's pedals or other bracket as a template, mark the moving parts positions for the screw holes. all wires and cables can reach their 3. In each marked location, drill a hole connection points slightly smaller than the supplied mounting screws. 5
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| $ 21-1574.fm Page 6 Monday, January 11, 1999 12:52 PM F _4 4. Using a Phillips screwdriver, attach the mounting bracket to the mount-
ing surface with the supplied large mounting screw and star lock wash-
ers. 5. Attach the CB to the mounting bracket using the supplied rubber washers and mounting knobs. CONNECTING THE MICROPHONE
+. Align the slot on the top of the microphone plug with the ridge
inside the MIC jack, then fully insert the plug into the jack. 2. Secure the plug by turning the plug's locking nut clockwise. 3. Slide the microphone onto the microphone holder. To disconnect the microphone, unscrew the locking nut and gently pull out the microphone plug. Caution: Always grasp the connector body when you are disconnecting the microphone. Never pull on the micro-
phone cable. Rear View Showing Antenna Connector, Power Connector External Speaker PA Speaker o-
| 4 8 f
e o 21-1574.fm Page 7 Monday, January 1}, 1999 12:52 PM nnn INSTALLING AN ANTENNA Caution: To prevent damage to your CB, do not attempt to transmit without an antenna attached. Selecting an Antenna When you decide on an antenna and its location, consider these points:
* The antenna should be positioned as high as possible. The antenna and the antenna cabie should be routed as far as possible from any source of electrical noise such as ignition systems, electric gauges, and motors. Do not run the cable through a vehi-
cle's engine compartment or other areas that produce extreme heat. USING VEHICLE BATTERY POWER You can power this CB fram your vehi-
cle's battery or from standard AC power with an optional DC power supply. For in-
formation on using AC power, see Using the CB as a Base Station. on Page 7. Follow these steps to power the CB from your vehicle's baltery. A Plug the single connector end of the xe \power cord into POWER 13.6V DC
<<? on the CB's back panel. cles negative (-) battery terminal or Your local RadioShack store sells a v; Nae 2. Connect the black wire to your vehi-
ety of CB antennas for both mobi id fat base-station use. Choose the on best meets your needs. Connecting an Antenna Follow the mounting instructions sup-
plied with the antenna you choose. Route the antenna cable to the CB, then thread the PL-55 antenna cable plug into ANTENNA on the back of the CB. Cautions:
Do not run the cable over sharp edges or moving parts that might damage it.
* Do not run the cable next to power cables or other CB antenna cables. o to a metal part of the vehicle's frame that is not insulated from the frame by a plastic part. 3. Connect the red wire, with its in-line fuse, to a source of voltage that turns on and off with the ignition switch, such as a spare accessory terminal in your vehicle's fuse box. This assures you that power to the CB is turned off when you turn off the ignition. 4. Connect the orange wire, with its in-
line fuse, to a source of voltage that supplies constant positive (+) power regardless of the ignition switch or directly to your vehicles positive (+) battery terminal. This enables the radio to remember the last channel you tuned to when you turn the radio back on. 7
~9|
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a o I 31-1574.fm Page 8 Monday, January 11, 1999 12:52PM 4 USING THE CB ASA BASE STATION Although this CB is designed for mobile use, you can also use it as a base sta-
tion. For base-station installation, you need a regulated 12-volt DC power sup-
ply, such as Cat. No. 22-504 available at your local RadioShack store. Caution: Most 12-voit DC power sup-
plies plug into a standard AC outiet to produce DC power. Before connecting your CB to a 12-volt DC power supply, read and follow the instructions included with the power supply. You also need a base station antenna
(such as Cat. No. 21-921) and coaxial antenna cable and connectors. Your lo-
cal RadioShack store also carries thesg2:
LOY Ww accessories. Follow these steps to install the CB as a base station. 1. Mount the base station antenna as described in its owner's manual. Warning: Use extreme caution when you install or remove a base station CB antenna. If the antenna starts to fall, let it go! It could contact overhead power lines. If the antenna touches the power line, contact with the antenna, mast, cable, or guy wires can cause electrocution and death. Cail the power company to remove the antenna. BDO NOT attempt to do so yourself. 2. Route the antenna cable to the CB, then connect the cable to ANTENNA on the back of the CB. 3. Plug the single connector end of the power cord into POWER 13.8V DC on the CB's back panel. 4. Connect the black wire to the DC power supply's negative (-) termi-
nal. 5. Connect the red wire and orange wire, with in- line fuses, to the DC power supply's positive (+) terminal. Note: Due to the lack of a constant 412VDC, as in an automotive installation, if you tum off the DC power supply, the CB remembers the last channel you tuned for only a few minutes. When you turn on the CB and the DC power supply again, the radio automatically tunes to Chanpel 9. 4 Ces OL
t CONNECTING OPTIONAL EXTERNAL SPEAKERS You can connect an external CB or PA speaker to your CB. The larger, external speaker provides greater clarity. A PA speaker fets you take advantage of the amplifier and mic to use the CD as a public-address system. External CB Speaker To connect an external CB speaker, use a speaker rated at 8-ohms and ca-
pable of handiing 3-10 watts of power
(such as Cat. No. 21-549). Simply plug the speaker cable's /einch plug into EXT SP. Connecting the external speak-
er automatically disconnects the inter-
nal speaker.
o
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e a
) 21-1574.fm Page 9 Monday, January 11, 1999 (2:52 PM a EE Public Address Speaker To connect a PA speaker to the CB, use an 8-ohm speaker cable capable of han-
dling 5 or more watts of power, such as Cat. No. 40-1235 or 40-1236. Plug the speaker cable's /s-inch plug into PA SP. Refer to Using the Public Address Function on Page 14 for operation in-
structions. ADJUSTING THE STANDING WAVE RATIO Most antennas are factory adjusted. However, you can usually improve per-
formance by matching the characteris-
tics of your antenna system to the CB's points to CALV on the upper SWR scale. 4. Release the microphone's talk but-
ton. 5. Set S/RF/SWRICAL to SWR. 6. Press the microphone's talk button again and note the actual SWR measurement on the upper SWR scale. Refer to the chart on Page 12 to assist you in interpreting the SWR meter readings. The SWR value takes into account the actual frequency of the RF signal trans-
mitted. Therefore, you will get a different SWR reading from one CB channel to mother. Almost all the CB transmis-
<4gions usually fall within an acceptable RF output power using the built-in SWR(Ssmange. However, for optimum radio per-
meter. The impedance of a CBs oul compared to the impedance of th ay tenna and the antenna cable is typically slightly mismatched. By adjusting this impedance ratio to be as close to 1:1 as possible, you maximize the efficiency of your system. After you have properly instalfed the an-
tenna and routed its cable, follow these steps to adjust the standing wave ratio Note: The SWR on some mobile and base-station antennas cannot be changed. 1. Turn on the CB by turning OFF/VOL-
UME clockwise until it clicks. 2. Set S/RF/SWRICAL to CAL. 3. Hold down the microphones talk button and adjust SWR CAL so the SWRYRF signal meters needie o S formance, we recommend that you fine tune the antennas system based on the channel you use most. If you have no particular channel preference, set your antenna's SWR for maximum perfor-
mance on Channel 19.
Le 21-1574.fm Page 10 Monday, January 11, 1999 12:52 PM \
o STANDING WAVE RATIO GUIDELINES The ideal standing wave ratio (SWR) reading is a 1:1 ratio, or a meter reading of 1 on the SWR meter's top scale. This reading, however, can only be obtained under labo-
ratory conditions. A SWR ratio of 1.5:1 to 2:1 is excellent for most mobile CB antenna applications. This chart helps you to interpret the different readings you might see. Standing Wave Ratio Performance Ratio Rating Evaluation 4:1 - 1.5:1 I Superior Perfect match between the an |
tenna/cable and the RF output of the CB. _|
1.5:4 ~2:1 Excellent The antenna/cable system is an outstanding match to the trans-
mitter's RF output. Ideal for most
| L GB nstallations. |
e 2:1-3:1 Good on The antenna/cable system will AS perform to specification under SS most normal conditions. L Sy Higher than Inefficient Indicates a need to inspect the 3.431 system, the mounting of the antenna and ail pertinant hard-
ware, L _t Prolonged exposure to salt spray, humidity, weather-induced corrosion, or vehicle vi-
bration can cause antenna performance to degrade with a subsequent rise in the SWR. Anytime you notice that the SWR reading is greater than 3:1, check the condi-
tion of the antenna, the antenna cable and all antenna connectors and hardware. o-
@ ee
&e | * 21-1574.fm Page 11 Monday, January 11,1999 12:52 PM
~* , QUICK LOOK AT THE CONTROLS
-9@
Closeup Front View Showing Display, Knob Switches Button et, With leader linevaid Callouts with Description a 0x This entire page to just BE Operation D31-1574.fm Page 12 Monday, unwary 11, 1999 12:52 PM OPERATION _) Before you start using your CB, you should know how to use it effectively and courteously. CB Operation Tips on Page 15 contains information that will help you get more enjoyment from using your CB. TURNING ON THE CB AND RECEIVING TRANSMISSIONS 4. Turn SQUELCH fully counterclock-
wise. 2. Set CH-9/NOR/CH-19 to NOR, S/RF/
SWRICAL to S/AF (send and receive), and CB/WX/PA to CB. 3. To turn on the CB, turn OFF/VOLUME clockwise until it clicks and you hear"
a hissing sound. TX/RX lights, Sec?
CB displays the tast-tuned chanhd) number, and the SWR/RF/Signal Meter lights. 4. Turn SQUELCH clockwise until the hissing sound stops. Note: If the CB picks up unwanted, partial or very weak transmissions, continue to turn SQUELCH clockwise to decrease the CB's sensitivity to these signals. Turn SQUELCH coun-
terclockwise if you want to listen to a weak or distant station. 5. Adjust OFF/VOLUME to a comfort-
able listening level. 6. To manually tune channels, turn the tuning contro! beneath the display to select a channel. The selected channel number appears, and the SWR/RF/Signal Meter shows the signal strength. To quickly tune to Channel 9 or 19, set CH-S/NORICH-19 to CH-9 or CH-
19. 9 or 19 flashes. Notes:
Selecting either channel overrides the manual channet selection control.
* All channels, with the exception of Channels 9 and 19, by agree-
ment, are available for general communications. Channels 9 and 19 are reserved for motorist assistance and for reporting emergency situations, hazardous Zosroad conditions, and the like. oS Important: Always give emergency communications priority on Chan-
nels 9 and 19. Your CB provides for fast selection of Channel 9 and 19 for that reason. If necessary, turn RF GAIN clockwise to boost the strength of a signal. If you hear low-level popping-type noise, set NB/OFF to NB to turn on the noise blanking circuit. we
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& | 24-1574.fm Page 13 Monday, January 11, 1999 12:52 PM
4 9. To improve communication quality, set ACE/OFF to ACE which enables the ACE circuit. 10. To turn off the TRC-446, turn OFF/
VOLUME counterclockwise until you hear it click. Changing Channels Using the Controls on the Microphone To tune to the next higher or lower chan-
nel, press UP or DOWN. To quickly change channels in either ci-
rection, hold down UP or DOWN until you reach the desired channel, signal any stronger, and might dis-
tort your transmission. 3. When you finish transmitting, release the microphone taik button. TX/RX changes to green. The TRC-
446 can now receive transmissions. 4. To turn off the TRC-446, turn OFF/
VOLUME counterclockwise until you hear it click. LISTENING TO WEATHER BROADCASTS The TRC-446 can receive seven pre programmed weather channels which
@ been allocated by the Federal To prevent accidentally changing the < Simunications Commission (FCC) for channel with UP or DOWN, press LOCK.S~use by the National Oceanographic and Press LOCK again to restore the UROK\ Atmospheric Administration (NOAA). DOWN operation. cy 5) TRANSMITTING Note: We recommend you try receiving transmissions before you transmit. 1. Follow Steps 1~9 under Turning On the CB and Receiving Transmis-
sions on Page 12. 2. Hold down the microphone's talk button and speak into the micro-
phone in a normal voice from about 2-3 inches away. TX/RX changes to red, and the SWR/RF/signal meter indicates the strength of your trans-
mission. Note: Do not speak too loudly when transmitting. It does not make your oe NOAA broadcasts your local forecast and regional weather information on one or more of these channels in your area. Your TRC-446 receives these weather service frequencies:
Channel 162.400 162.475 162,525 162.550 e.
| 33-1574.fm Page 14 Monday, January $1, 1999 12:52 PM be To listen to one the seven available weather channels, set CB/WXY/PA to WX, then turn WEATHER to choose the de-
sired channel. Readjust OFF/VOLUME if necessary. Notes:
* WX/ALERT lights green when you enter a reception area for a weather channel. The indicator turns off when you are outside the usual reception area. Atmospheric condi-
tions, terrain and other conditions will affect reception of a specific channel.
* When you set CB/WX/PA to WX, the channel display and SWR meter turn off. USING THE PUBLIC ADDRESS FUNCTION 1. Connect a PA speaker to the TRC-
446 (see Connecting Optional External Speakers on Page 8). 2. Turn OFF/VOLUME fully counter-
clockwise. 3. Set CBAVX/PA to PA. The meter and TX/RX turn off. 4. Hold down the microphone talk but-
ton and speak into the microphone in a normal voice. Be surethe micro-
phone is as far from the PA speaker as possible to reduce the possibility Aft audio feedback or howl. oe
& Adjust OFF/VOLUME as needed to ox mw SY adjust the PA's volume. Weather Alert CY i BSS NAN, ) In the event of severe weather condi-
tions, the National Weather Service broadcasts a special 1050 Hz signal tone that the TRC-446 receives if it is tured on. If the radio is off, the tone does not sound. When the radio re-
ceives this signal tone, WX/ALERT lights orange regardiess of the position of CB/WX/PA. NOAA transmits this tone for approximately 5 seconds. Once the CB receives the signal, the light remains on even after tranmission ceases. How-
ever, WX/ALERT turns off if the channel moves out of the range of that NOAA channel. If CBAVX/PA is not set to WX when WX/
ALERT lights, switch to WX to hear spe-
cial severe weather information and
| warnings. |
oe 4 s-
ee 4 ee pS oe 21-1574.$m Page 15 Monday, Janvary 1, 1999 12:52 PM 4 CB OPERATION TIPS Like most activities, CB radio users have * Contact friends or neighbors find customs and courtesies. The following out what's happening or plan a tips will help you get the most enjoyment get-together. out of your CB. * Ever have car trouble or run out of gas on the highway? With your CB you can have peace of mind know-
TYPICAL USES ing you can call for assistance. FOR A CB RADIO
* Camping, fishing, and other sports are more fun with a CB. Keep in touch with a buddy or find out what's cooking back at camp. Business Uses
* Truck drivers and delivery personnel can learn road and traffic conditions and get assistance in locating dest CB Courtesy nations. A CB is aiso good company on these long hauls. * Wait for a pause in someone else's
* Used by construction crews, a CB ., transmission before you ask for a quickly pays for itself when you are ; S calling for additional materials ore SS If you do not receive an answer to coordinating the activities of di a your call after a second attempt, we ent work crews. my sign off and wait several minutes
* For security officers, a CB is more before trying again. than a convenience it is a must * Do not held down the microphone for both safety and efficiency. talk button, called dead keying, when you are talking. Personal Uses * Assist callers with directions, infor-
mation about road conditions, and
* Keep in touch with home while driv- any other reasonabie requests. ing to work, to the store, or to a social activity. Let your family know you are tied up in traffic or that you will stop by the store on the way home. If you are a two-or-more car family, CBs are great for inter-car communi-
cations while family members are going places.
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|e 3i-1574.fm Page 16 Monday, January 11, 1999 $2:52 PM '
e
~ USING COMMON 10-CODES e Citizen's band operators have largely adopted the following 10-codes for stan- Code Meaning dard questions and answers. These 40-21 | Call by telephone. codes permit faster and more precise = }-
communication in noisy areas. This ta- 10-22 | Cancel last message. ble lists codes adopted by the Associat- 10-23 _| Arrived at the scene. ed Public-Safety | Communications Officers (APCO). 10-24 | Assignment complete.
{Dee 10-25 Meet. pO Code Meaning 10-26 | Estimated time of arrival is 10-1 Your signal is bad.
[<p . 10-2 Your signal is good. 10-30 Use caution. 103 | Stop transmitting. 10-31 | Pick up. 10-4 Message received and under- 10-33 | Emergency traffic. Clear the stood. channel.
| 40-5 _ | Relay information to . x 34 | What time is it?
* 10-6 | | am busy or are you busy? ~\ ~<10-41 | Switch to Channel ~ &
| [107 [outteeniee ah 10-62 | Cannoi understand. |
10-8 In service. SS 4 10-9 Repeat last message. Note: Although this table lists the 10-
|______.- codes meanings in the form of a state-
10-10 | Negative (NO). ment, they can also be phrased as 40-11 in service. questions (10-6: Are you busy?, 10-20:
tT What is your location?). 10-12 Stand by. 10-13 Report road/weather conditions. SSS 10-14 information. 10-15 | Message delivered. 10-16 Reply to message.
10-17 En route. 10-18 Urgent 10-19 | Contact. 10-20 | What's your location?
45 4 es ee 416 8 F oe
o-
31-1574.fm Page 17 Monday, January 11, 1999 12:52 PM MAXIMUM RANGE The maximum range and quality of CB transmissions vary depending on the fol-
lowing typical conditions:
* The type and quality of antenna used. The height of the antennas mount-
ing location the higher the antenna, the greater the signal's range The surrounding terrain moun-
tains and tall buildings limit the range.
* Weather conditions.
* The number of nearby CBs operat-
ing on the same channel. REDUCING NOISE The audio clarity enhancer (ACE) circuit uses compander (compressor and ex-
pander) technology to improve commu-
nication quality. The circuit maintains the dynamic range while increasing the signal-to-noise ratio as the gain is auto-
matically controlled according to the in-
put signa! level. This results in a reduction in wide band noise. The noise blanking (NB) circuit helps keep background noise to a minimum. However, strong sources of electrical noise, generated by spark plugs or the ignition of your car, or another radio, might be more than the circuit can com-
pensate for.
+e _4|
If you suspect engine noise as a source, turn off the engine and operate the CB with the ignition set to ACC. If most or aii af the noise stops, the probiem is in ve-
hicle's ignition or electrical system. The following few hints can help you re-
duce or eliminate such noise.
* Replace old ignition wires with new, high-voltage, noise-suppression wires, Install noise suppressors on your spark plugs, or install new spark plugs that have built-in suppressors.
* Be sure that the black wire ground connection is securely attached to Cx either your vehicies battery's nega-
<2 tive (GND) terminal or to a good 3 electrical chassis ground. KOR if problems persist, check your alterna-
tor or generator, voltage regulator, and any stand-alone gauges. Noise from these sources can be reduced or elimi-
nated using bypass capacitors at vari-
ous output voltage points. Your local RadioShack store has a wide selection of noise-suppression accesso-
ries.
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&e le 21-1574.fm Page 18 Monday, January 11 1989 12:52 PM
~ TROUBLESHOOTING
Kf your CB is not working as it should, follow the suggestions below to see if caf RadioShack store for assistance. you can eliminate the problem. If the Symptom Check That:
Reception difficulties LL OFF/VOLUME is turned on. F CBIWXPA is set to CB
| OFFVOLUME is at a sufficient listening level. |
RF GAIN is set to the correct level. The microphone is securely plugged into MIC. The antenna cable is securely plugged into ANTENNA on the rear of the radio and attached securely to the antenna at the other end. Transmission difficulties i OFF/VOLUME oS on. |
OFF/VOLUM@js.at a sufficient listening level. |
[orrvoLoMeys The mene is securely plugged into MIC. 7 --
All connactors (microphone, antenna, speakers) are tight and secure. 4 When transmitting, you are fully pressing the push-to-talk switch. |
t The antenna is properly mounted and not
{obstructed or grounded. |
No channel selection or only Channel 9 or 19 can be selected. CB/WXIPA is set to CB CHS/NORICH-19 is set to NOR L L. No operation at all.
1 The power supply and in-line fuse are functioning
(Replacing the Fuses on Page 20) problem persists, take the CB to your lo-
o _
(@-i71574.4m Page 19 Monday, January 11, 1999 12:52 PM |
CARE AND MAINTENANCE Your RadioShack TRC-446 Deluxe 40-Channel Mobile CB is an example of supe-
rior design and craftsmanship. The following suggestions will help you care for your TRC-446 so you can enjoy it for years. Keep the CB dry. If it gets wet, wipe it dry immediately. Liquids might contain minerals that can corrode the electronic circuits. Use and store the CB only in normal temperature environments. Tem-
perature extremes can shorten the life of electronic devices, and distort or melt plastic parts. 2a Keep the CB away from dust and dirt, which can cause premature wear of parts.
oo Handle the CB gently and carefully. Dropping it can damage circuit ed Wipe the CB with a da: INtF occasionally to keep it looking new. Do not use harsh hemigale cleaning solvents, or strong detergents to clean the CB. Sy?
Moditying or tampering with the CBs intemal components can cause a maifunction and might invalidate its warranty and void your FCC authorization to operate it. If your CB is not performing as it should, take it to your local RadioShack store for assistance. 19
@ a 1
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| 71-1574.4m Page 20 Monday, January 11, 1999 12:52 PM
REPLACING THE FUSES The TRC-446's 2-amp fuses help pro-
tect your CB from power surges and short circuits. Wf the red wires fuse is biown, replace it with a 2-amp, fast-acting glass fuse, such as Cat. No. 270-
1007, ff the orange wire's fuse is blown, replace it with a 1-amp, fast-acting glass fuse, such as Cat. No. 270-
1005. Follow these steps to replace each fuse. 1. Make sure the power source and CB 1 are both off. ANS i Se ~
2. To open the fuse holder, push thes
+ fuse holder ends together, then tum, c either end counterclockwise 7 release it. Ny, 3. if the fuse is blown, replace it. Caution: Do not use a fuse with rat-
ings other than those specified here. Doing so might damage your TRC-
446. 4. Close the fuse holder by pushing the fuse holder ends together, then turn either end clockwise.
Y 21-1574.fm Page 21 Monday, January 11, 1999 12:52 PM SPECIFICATIONS GENERAL Channels .....cccccccsccccsceeseceecsecseeeceeceeseneacerscessenspeavenssassausaesennecrseaseaessaaecaes 40 Channels Frequency Range .........ccccccccereenseecrensne crest ereneenes 26.965 MHz to 27.405 MHz Power Requirements .............::cc 13.8V DC (12-16 Volts DC, Negative Ground) vee ee 2a x 71a x 77a INCHES
(57 x 184 x 200 mm) Dimensions (HWD) WIQNE oo. eecee teense esseeeeneseeeeneseetenenerrenensstanenssesenan easeenansasacaneneneatanes 3.1 Ibs (1.4 kg) RECEIVER Sensitivity 0.7 uV or better for 10 dB (S+N)/N Adjacent Channel Rejection .. 65 dB (at 10 kHz) Audio Output 2... cesses crete enee sneer eecne nesses tateeeeseenaseeeteeattes 4.5 Watts (Maximum) Frequency Response sessseeeentsesneennessereesssersnshles ceanecasesaceneseasesesseanoneaeeeeas 450-2500 Hz Intermediate Frequency ~ veventaneatevaneeeeceeees 1st IF: 10.695 MHz 2nd IF: 455 KHz CrosS MOGUIAtiON oo... cece cece mere ceen tea ceaeesmeeseeceneeerseeaneensaeseseeneceanerenenee 50 dB SQUGICH o.ceseeeeceeereesss reese csssnenereneessacnseneneeceteneerevsensse Adjustable from 0.5 uV to 1 mV TRANSMITTER Output POWER ooo... esc sreeereeeetenerccerncecatsrsanatenesnensetazecaes 4 Watts (FCC Maximum) Type of Modulation ... AM Double-Sideband, Full Carrier Modulation Modulation Capability 0.1.0... ccecccesteceeeeareeerses tenes rssnenennenseneeneaesanesenrenseneereratas +90%
Spurious EMISSION... eee eee sere tt teneeeeneneeneaeeenenenasettenenes Less than -70 dB Frequency Tolerance Antenna Impedance Current Drain oo... secs eeeeere reer (13.8-volt supply) 1 Amp with No Moduiation 1.6 Amps with 80% Modulation 21
oe e an -9|8
$e o 21-1574.fm Page 22 Monday, January 1), 1999 12:52 PM a a a A EE PUBLIC ADDRESS Output POWer oo... esc eecceeeeeeeeteeteatsesenenteneneaceneeatannecaneteas 4.2 Watts (Maximum) Current Drain (at maximum Power) 0... cess neeeneeseene iene tsneeertneteereeennnnes 1.2 Amps WEATHER RADIO Frequency Coverage (MHz) 162.400 162.425 162.450 162.475 162.500 162.525 162.550 Specifications are typical; individual units might vary. Specifications are subject to i change and improvement without notice. foo a. SS
; OS
| ESS
&e | @ asm Page 23 Monday. January 11, 1999 12:52 PM 6
+ NOTES
+e es
& | T/ 21-1574.fm Page 24 Monday, January 11, 199% 42:52 PM Limited Ninety-Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workman-
ship under normal use for ninety (90) days from the date of purchase from RadioShack company-
owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO LIABIL-
ITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RE-
SPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WAR-
RANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVE-
NIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN AD-
VISED OF THE POSSIBILITY OF SUCH DAMAGES. Some states do not allow the limitations on how long an implied warranty lasts or the exciusion of in-
cidental or consequential damages, so the above limitations or exclusions may not apply to you. In the event of a product defect during the warranty period, take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store. RadioShack wilt, at its option, un-
Jess otherwise provided by law: (a) correct the defect by product repair wehout change for parts and labor; (o) replace the product with one of the same or similar design; or (c) refund the purchase price. All replaced parts and products, and products on which a refund is made, become the prop-
erty of RadioShack. New or reconditioned parts and products may be used in the performance of warranty service. Repaired or replaced parts and products are warranted for the remainder of the original warranty period. You will be charged for repair or replacement of the product made after the expiration of the warranty period. This warranty does not cover: (a) damage or failure caused by or attributable to acta of God, abuse, accident, mieuse, Improper or abnormal usage, failure to follow instructions, improper installation or maintenance, alteration, ightning or other incidence of excess voltage or current, (b) any repairs other than those provided by a RadioShack Authorized Service Facility: (c} consumables such as fuses or batteries; (d) cosmetic damage: (e) transportation, shipping or insurance costs; or (f) costs of product removal, installation, set-up service adjustment or reinstafation. This warranty gives you specific egal rights, and you may also have other rights which vary from state to state. RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102 We Service What We Self 307 RadioShack A Division of Tandy Corporation Fort Worth, Texas 76102 Printed in Thailand |
4%
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 1999-04-22 | 26.965 ~ 27.405 | TNB - Licensed Non-Broadcast Station Transmitter | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
1999-04-22
|
||||
1 | Applicant's complete, legal business name |
RadioShack Corporation
|
||||
1 | FCC Registration Number (FRN) |
0027478072
|
||||
1 | Physical Address |
300 RadioShack Circle, Mail Stop WF4-136
|
||||
1 |
Fort Worth, Texas 76102-2802
|
|||||
1 |
United States
|
|||||
app s | TCB Information | |||||
n/a | ||||||
app s | FCC ID | |||||
1 | Grantee Code |
AAO
|
||||
1 | Equipment Product Code |
2101574
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
E**** G********
|
||||
1 | Title |
Regulatory Affairs Manager
|
||||
1 | Telephone Number |
817-4********
|
||||
1 | Fax Number |
817-4********
|
||||
1 |
e******@radioshack.com
|
|||||
app s | Technical Contact | |||||
1 | Firm Name |
Hyak Laboratories Inc
|
||||
1 | Name |
R****** S**** J********
|
||||
1 | Physical Address |
7011 Calamo Street, Suite 107
|
||||
1 |
Springfield, Virginia 22150
|
|||||
1 |
United States
|
|||||
1 | Telephone Number |
703 4********
|
||||
1 | Fax Number |
703 6********
|
||||
1 |
h******@erols.com
|
|||||
app s | Non Technical Contact | |||||
1 | Firm Name |
Hyak Laboratories Inc
|
||||
1 | Name |
G****** H******
|
||||
1 | Physical Address |
7011 Calamo Street, Suite 107
|
||||
1 |
Springfield, Virginia 22150
|
|||||
1 |
United States
|
|||||
1 | Telephone Number |
703 4********
|
||||
1 | Fax Number |
703 6********
|
||||
1 |
h******@erols.com
|
|||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | TNB - Licensed Non-Broadcast Station Transmitter | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Does not apply | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
Hyak Laboratories, Inc.
|
||||
1 | Name |
R**** J****
|
||||
1 | Telephone Number |
703-4********
|
||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 95D | 26.96500000 | 27.40500000 | 4.0000000 | 0.0050000000 % | 6K00A3E |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC