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FEATURES

Your RadioShack CT-400 Handheld Cellular
Phone combines advanced technology and design
simplicity. To complement its small size and easy-
to-use design, the CT-400 provides a full range of
features.

Easy-to-Read Digital Display — the supertwist
liquid-crystal display provides essential call infor-
mation and can be easily read from almost any an-
gle.

Special Cellular Service Features — the phone is
preprogrammed to work with special (subscription-
only) messaging services offered by many cellular
carriers, including calling line ID and voice mail no-
tification.

One-Touch Dialing Memory — lets you dial an
important number at the touch of a single button.

Memory Dialing — lets you store up to 40 phone
numbers and names in memory, and dial any
stored number by simply entering its one- or two-
digit memory number (1–40).

Call Register Lists — let you quickly review and
redial any of the last 10 numbers that you called,
and (if you subscribe to the appropriate cellular
services) the numbers for any of the last 10 calls
you missed or received.

Keyguard — helps prevent accidental key presses
when the phone is in a pocket or bag, for example.

©

 1997 Tandy Corporation.

All Rights Reserved.

RadioShack is a registered trademark used by Tandy Corporation.

17-1101.fm  Page 2  Wednesday, July 21, 1999  9:57 AM

Summary of Contents for CT-400

Page 1: ...Cat No 17 1101 OWNER S MANUAL Please read before using this equipment CT 400 Handheld Cellular Phone 17 1101 fm Page 1 Wednesday July 21 1999 9 57 AM...

Page 2: ...ice mail no tification One Touch Dialing Memory lets you dial an important number at the touch of a single button Memory Dialing lets you store up to 40 phone numbers and names in memory and dial any...

Page 3: ...Standby Time the supplied battery fully charged provides about 1 hour 40 minutes of talk time or 21 hours of standby time Silent Service lets you set the phone to quietly beep instead of ring when it...

Page 4: ...Volume 16 Making Emergency Calls 16 Last 10 Number Redial 18 Menu Overview 19 Security Features 21 Selecting a Call Restriction Level 21 Turning One Touch Emergency Dialing On Off 23 Turning Keyguard...

Page 5: ...ervices 44 Adding a Pause 45 Adding a Wait 45 PIN Code Dialing 46 Memory Features 48 Storing a Number and Name in Memory 48 Using Number Quick Store 51 One Touch Speed Dialing 51 Memory Scrolling 52 C...

Page 6: ...ce mailbox See Message Waiting on Page 31 Appears when you press to enter letters See Storing a Number and Name in Memory on Page 48 MENU Appears when you press to select a menu function See Menu Over...

Page 7: ...t within a supported cellular service area See Setting the Cellular System Type on Page 26 flashes when SID screening is set to on and service is not available see SID Screening on Page 29 Indicates t...

Page 8: ...ust fully charge a new battery at least 24 hours before you first use it See Charging the Battery on Page 10 Use only the supplied charger and use only batteries recommended for this phone A new batte...

Page 9: ...al it is time to get a new battery Leaving the battery in a hot or cold place such as in a closed car in the summer or winter re duces the battery s capacity and life Always try to keep the battery be...

Page 10: ...not dispose of batteries in a fire CHARGING THE BATTERY Once you install the battery on the phone follow these steps to charge the battery using the sup plied charger 1 Insert the charger s barrel plu...

Page 11: ...olling when the battery is fully charged Disconnect the charger from the AC outlet first then discon nect it from the phone Using the supplied battery fully charged you have about 1 hour 40 minutes of...

Page 12: ...ARGE BATTERY and sounds a warning tone The phone automatically turns off about 10 seconds later Note The phone does not sound low battery warn ing tones if silent service is set to ON see Ring Type on...

Page 13: ...see Selecting the Active Phone Number on Page 25 The phone is ready to use when the signal strength and battery charge bars appear To turn off the phone hold down until the phone beeps MAKING A CALL...

Page 14: ...ignal Strength The vertical bar on the left of the display shows the strength of the cellular signal your phone is receiving The higher the bar the stronger the signal If the signal strength is low tr...

Page 15: ...name and number are pro grammed into your phone see Storing a Number and Name in Memory on Page 48 If you selected silent service see Ring Vol ume on Page 36 the phone does not ring Instead the keypa...

Page 16: ...51 ADJUSTING THE VOLUME To increase or decrease the earpiece volume dur ing a call press to increase or to de crease The phone displays VOLUME and a horizontal bar indicat ing the volume level The mo...

Page 17: ...different from the one pro grammed into your phone One touch emergency dialing does not oper ate if keyguard is turned on see Turning Key guard On Off on Page 24 or if one touch emergency dialing is...

Page 18: ...y the phone displays the phone number and its corresponding redial memory number L0 L9 Note If no number is stored in a redial memo ry the phone briefly displays LOCATION EMPTY 4 To dial a displayed n...

Page 19: ...functions press then forward or backward Press to select a displayed func tion You See Shortcut Description See Pg STORE TO MEMORY Stores names and phone numbers 48 FIND NAME Recalls names and phone n...

Page 20: ...NAM SELECT Displays and selects the active cellular number 25 CALLING CARD Selects and activates the calling card option 41 CHANGE LOCKCODE Changes the 4 digit lock code 37 SID SCREEN Turns SID scree...

Page 21: ...hese varying levels of call restrictions Restriction Level Description ALLOW ALL No restrictions default setting INCOMING ONLY All incoming calls can be an swered Outgoing calls are re stricted to the...

Page 22: ...l you see the setting you want to use then press to select that setting The phone prompts you for your 4 digit lock code LOCKCODE 3 Enter your lock code then press Note If you enter the wrong lock cod...

Page 23: ...dialing is preset to OFF To turn it on or back off at any time follow these steps 1 Press then repeatedly press or until the phone displays EMERGENCY KEY 9 2 Press The phone displays EMERG 9 ON if on...

Page 24: ...o turn off key guard To answer a call you must press During the call keyguard automatically turns off When you press to end a call keyguard automatically turns back on You cannot turn off the phone Yo...

Page 25: ...erent phone number at the time of activation If your phone is programmed with two different numbers follow these steps to select the active number the number you want to use to make and receive calls...

Page 26: ...ated Pro vider A and the other Provider B Your phone is activated to operate based on your cellular service provider s designation A or B If you travel to a city where you do not subscribe to cellular...

Page 27: ...travelled to for example if the company is Provid er A in both cities NON HOME TYPE A or B Use this setting if you are roaming and your home city cellular ser vice provider is the opposite provider t...

Page 28: ...from your home type system non home type sys tem In some areas the cellular system s computer au tomatically recognizes roaming telephones In oth er areas you must contact the service provider before...

Page 29: ...screening feature lets you set your phone to look for your designated carrier s code signal each time you place a call so the calls you place use only your carrier Notes If SID screening is set to ON...

Page 30: ...pro grammed into your phone the message NOT ALLOWED appears and the phone exits the menu 3 Press or to select the other setting then press to store your selection The phone prompts you for your 4 digi...

Page 31: ...kly store the displayed caller s num ber into the first empty speed dial memory display the record then hold down for about 2 seconds see Using Number Quick Store on Page 51 Message Waiting If you sub...

Page 32: ...you can store the number you call to reach your mail box in your phone s one touch dial location Memo ry 1 for easy access See Storing a Number and Name in Memory on Page 48 Other Services Your cellu...

Page 33: ...phone depending on network fea tures rounding off for billing and so on Follow these steps to view or reset the timers 1 Press 2 Press or to scroll through the timer displays LAST Shows the length of...

Page 34: ...timers press BACKLIGHT CONTROL Your phone is preset to turn on its display and key pad backlights each time you press a key then turn them off within about 15 seconds after the last key press To set t...

Page 35: ...t turn on at all and the phone is connected to a handsfree car kit the lights turn on for 15 seconds when you press a key KEYPAD TONES Your phone is preset to sound a tone each time a key is pressed T...

Page 36: ...off the phone s keytones even if the keytones feature is set to ON Follow these steps to set the ring volume 1 Press The phone displays the cur rent setting RINGING HIGH RINGING LOW or SILENT SERVICE...

Page 37: ...m ple ring for each setting 4 When you hear or see the setting you want to use press to store that setting CHANGING THE LOCK CODE At the time of activation your phone is pro grammed with and you were...

Page 38: ...enter the wrong lock code the phone displays CODE ERROR Start again at Step 1 and enter the correct code 4 Enter the new 4 digit lock code then press The phone prompts you to confirm the new lock cod...

Page 39: ...calls you answered Requires a subscription to calling line ID service through your cellular carrier see Calling Line ID on Page 31 Follow these steps to view any of the call lists or dial any number...

Page 40: ...to exit the list and clear the display Clearing the Call Lists To clear the entries from all call lists follow Steps 1 3 in Using the Call Register and select CLEAR LISTS in Step 2 The phone prompts y...

Page 41: ...displays CALLING CARD 2 Press The phone prompts you for your 4 digit lock code LOCKCODE 3 Enter your 4 digit lock code then press The phone displays the type of the last card selected or NO CARD if n...

Page 42: ...phone prompts you for the card number CARD ID CODE Card Type You See Carrier Name Carrier Access Number A Sprint MCI SNET 1 800 877 8000 1 800 950 1022 1 800 555 5321 B MCI MCI GTE 1 800 888 8000 1 8...

Page 43: ...ation and exits the menu Using a Stored Calling Card Number Follow these steps to make a long distance call us ing the calling card number you stored 1 Enter the desired area code and phone num ber th...

Page 44: ...or contact your long dis tance carrier USING TOUCH TONE SERVICES To use your cellular phone to control answering machines and special telephone services such as bank by phone or voicemail simply enter...

Page 45: ...seconds where you en tered a pause If you need a longer pause enter multiple pauses one after the other Adding a Wait If you do not know in advance how long you must wait before sending additional co...

Page 46: ...tivate your phone If you subscribe to PIN code dialing with your cellu lar carrier you can store the PIN code into your phone s memory and set the phone to send the code at the press of a button when...

Page 47: ...ly dial your stored PIN code Notes When PIN code dialing is set to ON you can place a call to the emergency number pro grammed into your phone as usual without sending the PIN code If you place a call...

Page 48: ...he backlight or displays NOT STORED Press to return to the previous prompt 1 Hold down to clear the display then press The phone prompts you to enter the name NAME and appears indicating that the phon...

Page 49: ...y such as STORE TO 5 or if memo ry is full prompts you to enter a speed dial memory number STORE TO 4 To store the number in the suggested speed dial memory press To store the number in a different me...

Page 50: ...press The phone displays NOT STORED and the number you tried to store Hold down to clear the display Hints Using Memory Location 1 You can hold down for about 2 seconds see One Touch Speed Dialing on...

Page 51: ...r it selected If all speed dial memory locations are full the phone briefly displays NO SPACE then the number you tried to store reappears To store the number clear a memory location see Clearing a Me...

Page 52: ...y the phone displays LOCATION EMPTY then it displays the next memory in sequence To begin scrolling from a specific name or letter s press enter the name or letter s then press or If the name or lette...

Page 53: ...To clear the selected memory press The phone briefly displays ERASED to confirm the operation then it displays ERASE and the next stored number or name in memory se quence Repeat Steps 2 and 3 for ea...

Page 54: ...y Any number previously stored in the scratchpad memory is replaced by the new number Note The scratchpad memory is automatically cleared each time you turn off the phone To recall the scratchpad memo...

Page 55: ...any approval or warranty applying to the phone and might be dangerous Here are a few practical rules for accessory opera tion Keep the accessories out of the reach of chil dren When you disconnect any...

Page 56: ...Remember to follow all special regulations and always turn off your phone whenever you are required to do so or when it might cause inter ference or be dangerous Any radio transmitting equipment incl...

Page 57: ...nval idate the phone s warranty Electronic fuel injection systems electronic anti lock braking systems electronic cruise control systems and other electronic systems can malfunction due to the lack of...

Page 58: ...ellular signal strength You might not be able to make emergency calls on all cellular phone networks or when certain network services or phone features are set Check with your local service providers...

Page 59: ...be too low for opera tion Check the display and listen for the low battery warning tone If the power comes on but the phone does not work Make sure that the antenna is properly in stalled and if your...

Page 60: ...tic parts Do not store the phone in cold areas When the phone warms up to its normal operating tempera ture moisture can form inside the phone which could damage the phone s electronic circuits Do not...

Page 61: ...W 2 dB 4 dB Operating Voltage Battery 4 8 V Input to Charger 120 V AC 12 V car Frequency Band 824 040 848 970 MHz TX 869 040 893 970 MHz RX Number of Channels 832 Memories 40 Speed Dial 1 Scratchpad S...

Page 62: ...62 NOTES 17 1101 fm Page 62 Wednesday July 21 1999 9 57 AM...

Page 63: ...63 17 1101 fm Page 63 Wednesday July 21 1999 9 57 AM...

Page 64: ...lightning or other incidence of excess voltage or current b any repairs other than those provided by a RadioShack Authorized Ser vice Facility c consumables such as fuses or batteries d cosmetic damag...

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