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E.F. Johnson Company 7243 LTR-NET Owner's Manual

Ltr-net 7200 series portable uhf trunked radio
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OPERATING
MANUAL
TRUNKED PORTABLE RADIO
7243
LTR-N
™
ET
P
ORTABLE
UHF

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Summary of Contents for E.F. Johnson Company 7243 LTR-NET

  • Page 1 OPERATING MANUAL TRUNKED PORTABLE RADIO 7243 LTR-N ™ ORTABLE...
  • Page 2 Project 25 digital radio products. ® ™ ® Viking Head/EFJohnson logo, LTR , LTR-Net , and Call Guard are trademarks of the E.F. Johnson Company. All other company and/or product names used in this manual are trademarks and/or...

  • Page 3: Safety Training Information

    SAFETY TRAINING INFORMATION SAFETY TRAINING INFORMATION WARNING This radio produces RF electromagnetic energy when transmitting and is designed and classified for “Occupational Use Only”. Radio equipment with this classification must be used only during the course of employ- ment by individuals aware of the hazards and the ways to minimize such hazards.
  • Page 4 SAFETY TRAINING INFORMATION • DO NOT transmit more than 50% of total radio use time (50% duty cycle). Transmitting for more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. This radio is transmitting when- ever Tx is indicated in the lower right corner of the display.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS SAFETY TRAINING INFORMATION ......4 QUICK REFERENCE GUIDE ....... 9 FEATURES .
  • Page 6 TABLE OF CONTENTS TELEPHONE CALLS ........30 General .
  • Page 7 TABLE OF CONTENTS CONVENTIONAL FEATURES ......48 Squelch Adjust ......... 48 Monitoring Before Transmitting .

  • Page 8: Quick Reference Guide

    QUICK REFERENCE GUIDE QUICK REFERENCE GUIDE Phone Group Scan System Scan List Group Monitor List Dial Mode Power Scan Call Priority BUSY UID/Aux Transmitter 8-Character Conv Ch Keypad Alphanumeric Battery Group Keyed Busy Lock Display Change system number - Press SYS or SYS (1-99) [pg 21] Change group number - Press GRP...

  • Page 9: Features

    FEATURES FEATURES General Features • ™ ® LTR-Net , LTR , and conventional operating modes • Unique 8-character system identification tags • System and group scan • User programmable system and group scan lists • Menu mode to select various functions •...

  • Page 10: Controls And Display

    CONTROLS AND DISPLAY CONTROLS AND DISPLAY Option Switch Antenna Jack On-Off/Volume Speaker Accessory Connector Microphone Top Panel Controls On-Off Volume - Turning this knob clockwise turns power on and sets the volume level. Turning it counterclockwise to the detent turns power off.

  • Page 11: Side Controls

    CONTROLS AND DISPLAY Option Switch 1 - This switch can be system operator programmed to control a specific function (see page 35). Antenna Jack - Connection point for the antenna. Accessory Connector - When the protective cover is removed, this connector can be used for connecting optional accessories.

  • Page 12: Display

    CONTROLS AND DISPLAY Phone Group Scan System Monitor List Scan List Group Dial Scan Call Mode Power Priority BUSY 8-Character UID/Aux Transmitter Conv Ch Keypad Alphanumeric Battery Group Keyed Busy Lock Display Display 8-Character Alphanumeric Display - This area of the display indicates the selected system/group (see “System/Group Display Mode”...
  • Page 13 CONTROLS AND DISPLAY - Indicates that the conventional monitor mode has been enabled by the Monitor option switch (see page 49). - “ P ” indicates that the displayed group is an LTR-Net/LTR priority 1 group, and “ P ” indicates that it is a priority 2 group (see page 45). - Indicates that the displayed group is in the scan list and scanned normally (see page 42).

  • Page 14: Front Panel Keys

    CONTROLS AND DISPLAY Front Panel Keys Most front panel keys have two or more functions. The function on the key is usually selected by simply pressing the key, and the function under the key is usually selected by first pressing another key such as the FCN key.
  • Page 15 CONTROLS AND DISPLAY SYS (RCL) Standard Mode - Selects the next higher system. - Selects the next lower system. SYS (xx) - Directly selects specified system. FCN RCL - Momentarily displays the revert (selected) system if it is not already being displayed. Dial Mode RCL - Scrolls through the numbers programmed in memory.
  • Page 16 CONTROLS AND DISPLAY Dial Mode 2 - Dials the “2” digit. FCN PHONE - Exits the dial mode and sends the call termination code. 3 (DIAL) Standard Mode FCN DIAL - Selects the dial mode without changing the currently selected group. 3 - Pressing this key with the PTT switch pressed transmits the “3”...
  • Page 17 CONTROLS AND DISPLAY Dial Mode 6 - Dials the “6” digit. 7 (S.A/D) Standard Mode FCN S.A/D (System Add/Delete) - Changes the scan list status of the currently displayed system. The system is in the scan list and scanned normally if “ ”...
  • Page 18 CONTROLS AND DISPLAY Dial Mode 0 - Dials the “0” digit. FCN STR (0-9) - Stores the displayed number in the specified memory location. Standard Mode - Pressing this key with the PTT switch pressed transmits the “ ” digit. - Selects the next lower system (see preceding “SYS”...

  • Page 19: Basic Operation

    BASIC OPERATION BASIC OPERATION Power-Up Sequence When power is turned on using the top panel on-off/volume control, the backlight turns on, all segments and icons in the display are momen- tarily enabled, and the last seven digits of the transceiver part number are very briefly displayed.

  • Page 20: System And Group Select

    BASIC OPERATION modes, press FCN STR. Turning power off does not change the selected mode. These modes operate as follows: Numeric Mode - The system and group numbers are displayed as “Sxx Gxx” and the group alpha tag is not displayed. For example, System 1 and Group 2 are displayed as follows.

  • Page 21: Keypad Disable

    BASIC OPERATION selected, a tone sounds and wrap-around to the highest system or group occurs. • To directly select a system or group number, press SYS or GRP and then the number of the desired system or group. For example, to select Group 9, press GRP, 0, 9.

  • Page 22: Low Battery Indication

    BASIC OPERATION Low Battery Indication When the battery voltage drops to the point where recharging is required, the icon is indicated in the bottom part of the display. In addition, a beep sounds when this indication initially appears and when the push-to-talk switch is released (if the key press tone is enabled).
  • Page 23 BASIC OPERATION LTR-Net and LTR Operation The LTR-Net and LTR modes provide automatic channel selection and monitoring before transmitting. Special tones and display messages indicate busy and out-of-range conditions, and telephone calls can be placed almost as conveniently as with your home telephone. Selecting a system selects a collection of up to 99 groups.

  • Page 24: General Features

    GENERAL FEATURES GENERAL FEATURES Bank Select A bank is a collection of selectable systems that have been set up for a specific application. For example, one bank could be programmed for operation in Minneapolis and another for operation in Milwaukee. Up to sixteen banks can be programmed, and each bank is identified by a unique alpha tag.

  • Page 25: Home System/Group Select

    GENERAL FEATURES Home System/Group Select To select the preprogrammed Home system/group, simply press the FCN HOME. The Home system/group programmed for the current bank is then displayed and it becomes the selected system/group. If no home system/group has been programmed, this function is not available. Proceed (Clear-To-Talk) Tone This is a short tone that sounds shortly after the PTT switch is pressed to indicate that the radio system has been accessed and speaking...

  • Page 26: Time-Out Timer

    STANDARD GROUP CALLS Time-Out Timer The time-out timer disables the transmitter if it is keyed continu- ously for longer than the programmed time. It can be programmed for 0.5 - 5.0 minutes or disabled entirely. If the transmitter is keyed continu- ously for longer than the programmed time, the transmitter is disabled, “TIMEOUT”...

  • Page 27: Placing A Standard Group Call

    STANDARD GROUP CALLS Placing a Standard Group Call 1. Turn transceiver power on and set the volume as described starting on page 20. With conventional operation, also make sure that the squelch is properly set as described on page 48. 2.

  • Page 28: Receiving A Standard Group Call

    STANDARD GROUP CALLS • If the radio system could not be accessed because of an out-of-range condition or some other reason, the intercept tone sounds (see page 52) and “NO ACESS” is indicated in the display. The PTT switch must then be released and pressed again to make another access attempt.

  • Page 29: Telephone Calls

    TELEPHONE CALLS TELEPHONE CALLS General NOTE: Telephone calls can be placed and received only if that service is available to you and your transceiver has been programmed appropriately. The telephone calling feature allows you to place and receive tele- phone calls using your transceiver. The following information describes how these calls are made with LTR-Net and LTR operation.

  • Page 30: Receiving A Telephone Call

    TELEPHONE CALLS • If the radio system is busy or could not be accessed, busy or no access conditions are indicated the same as described for standard group calls on page 28. • With LTR-Net operation, a short tone sounds to indicate that the number was accepted by the system.

  • Page 31: Landside-Originate Telephone Calls

    LTR-NET AUXILIARY CALLS Landside-Originate Telephone Calls If telephone calls can be placed, it is usually possible to receive tele- phone calls from a landside telephone. With some radio systems, each mobile is assigned a unique telephone number so that it can be dialed directly.

  • Page 32: Receiving Auxiliary Calls

    LTR-NET AUXILIARY CALLS 3. Select the dial mode by pressing FCN DIAL. This mode is indicated when the handset portion of the telephone icon is displayed. 4. Dial the desired number which specifies the mobile or group of mobiles being called. If it has been previously stored, this number can be recalled from memory by pressing FCN RCL and the location number (0-9).

  • Page 33: Option Switches And Menu Mode

    OPTION SWITCHES AND MENU MODE The transceiver may be programmed so responses always occur on the last selected group. In this case, the group may need to be manually changed to respond to these calls (see “Transmitting In The Scan Mode” on page 43).

  • Page 34: Option Switches

    OPTION SWITCHES AND MENU MODE Option Switches The push-button switch on the top panel (see page 11) and the switch immediately above and the switch immediately below the PTT switch on the side panel (see page 12) are programmable by your system operator.
  • Page 35 OPTION SWITCHES AND MENU MODE • To display the selected option for a parameter, press the STR key. • To change the selected option, press the keys. • To exit back to the parameter and save the selected option, press FCN STR.

  • Page 36: Dial Mode

    DIAL MODE DIAL MODE Introduction When placing calls that require a number be dialed (telephone and auxiliary), using the dial mode allows the number to be dialed at any convenient rate, dialing errors to be corrected, and then the radio system to be automatically accessed and number transmitted when desired.

  • Page 37: Dialing A Number

    DIAL MODE Dialing a Number Enter the desired number by pressing the 0-9, , and keys. Other dialing functions are as follows: • Only the last 8 digits dialed are displayed. To momentarily display the upper 8 digits, press FCN •...

  • Page 38: Recalling Numbers From Memory

    DIAL MODE NOTE: The character is stored and sent normally (no pause occurs), and the character should not be stored because it may terminate the call when it is sent. Recalling Numbers From Memory From Specific Location - FCN RCL 0-9 (location number) Stored in Next Location - RCL (hold down to repeat).

  • Page 39: System And Group Scanning

    SYSTEM AND GROUP SCANNING SYSTEM AND GROUP SCANNING General Introduction The scan feature monitors, in sequence, the systems and/or groups in the scan list. When a message is detected that the transceiver is programmed to receive, scanning stops and the message is received. Shortly after the message is complete, scanning resumes (unless it has been disabled).
  • Page 40 SYSTEM AND GROUP SCANNING System Scan List Group Scan List System or Group Group Scanning Selected Scanning Occurring Scan Types The type of scanning selected is determined by the menu mode SCN TYPE parameter (see page 35). If it is not selectable, the scan type is fixed by system operator programming.

  • Page 41: Scan List Programming

    SYSTEM AND GROUP SCANNING systems are not scanned). If roaming is enabled, registration on other sites occurs normally and scanning of LTR-Net systems occurs as just described. However, if the current LTR-Net site is lost and no other LTR-Net site can be located, the LTR and conventional systems in the scan list are also scanned.

  • Page 42: Scan Delay And Continue Timers

    SYSTEM AND GROUP SCANNING Systems and groups can be deleted from the scan list in the normal manner while listening to a message on the system or group by simply pressing the S.A/D or G.A/D key. Scanning resumes shortly after the system or group is deleted.
  • Page 43 SYSTEM AND GROUP SCANNING to the new system/group, or changes temporarily. This in turn affects the system/group on which responses occur. The display always indicates the system/group on which a call is received, but this may not be the system/ group on which a response occurs.

  • Page 44: Ltr-Net And Ltr Features

    LTR-NET AND LTR FEATURES LTR-NET AND LTR FEATURES Transmit Inhibit The Transmit Inhibit feature prevents the transmitter from keying if the mobile you are calling is busy with another call. When the transmitter is disabled by this feature, the intercept tone sounds and “TX INHIB” is displayed (see following illustration).

  • Page 45: Ltr-Net Features

    LTR-NET FEATURES LTR-NET FEATURES NOTE: Other LTR-Net features are described starting on page 45. LTR-Net Standard Calls Standard group calls are between two mobiles or between a mobile and a control station. To place these calls in the LTR-Net or LTR mode, simply select the desired group and press the PTT switch (no number is dialed) as described starting on page 27.

  • Page 46: Roaming

    LTR-NET FEATURES Roaming LTR-Net radio localities (sites) can be linked together to provide wide area coverage. Calls can then be automatically routed to your current location as you travel from locality to locality. Both standard group and special calls may be routed in this manner. If your transceiver is programmed for roaming, this feature is utilized as follows: 1.

  • Page 47: Ltr Features

    LTR FEATURES LTR FEATURES NOTE: Other LTR features are described starting on page 45. Standard Group Calls Standard group calls are between two mobiles or between a mobile and a control station. To place these calls in the LTR or LTR-Net mode, simply select the desired group and press the PTT switch (no number is dialed).

  • Page 48: Monitoring Before Transmitting

    CONVENTIONAL FEATURES 3. Press the key until receiver noise is heard and then press until the noise just mutes. To decrease or increase the selected level in steps of 10 (or select the minimum or maximum level if this is not possible), press FCN or FCN , respectively.

  • Page 49: Transmit Disable On Busy

    CONVENTIONAL FEATURES Busy Indicator BUSY Monitor Mode There may be times when the Busy indication is displayed even though no one is using the channel. Monitoring should then be performed using the monitor mode. This mode is enabled and disabled by pressing the Monitor option switch (see page 35), and is indicated by in the display as shown in the following illustration.

  • Page 50: Talk-Around

    CONVENTIONAL FEATURES While the PTT switch is pressed, the receiver is enabled so that activity on the channel can be monitored. The PTT switch must be released and then pressed again to make another call attempt. Occasion- ally, a busy condition may be detected even though no one is talking. To key the transmitter in this case, release the PTT switch and then immedi- ately press it again.

  • Page 51: Miscellaneous

    MISCELLANEOUS MISCELLANEOUS Supervisory Tones The following tones are heard at various times when operating this transceiver. Some or all of these tones may be disabled by the TONES menu parameter or programming (see “Tone Select” on page 27). Busy Tone This tone is similar to the standard telephone busy tone, and it indi- cates that the radio system is currently busy.

  • Page 52: Ltr-Net Special Call Tones

    MISCELLANEOUS is displayed, the transmitter has been disabled by the Transmit Inhibit feature (see page 45). • Receive-Only Group - If this tone sounds when the push-to-talk switch is pressed and “TX DISBL” is displayed, the group is receive- only (see page 26). Proceed (Clear-To-Talk) Tone - This is a short single or double tone which sounds after the push-to-talk switch is pressed to indicate when talking can begin (see page 26).

  • Page 53: Ltr Telephone Call Tones

    MISCELLANEOUS Proceed Dialing Tone - When placing a landside-to-mobile telephone call (see page 32), the landside caller may enter a special number which specifies the mobile being called. This tone indicates when that number should be dialed. LTR Telephone Call Tones The following tones are generated by LTR interconnect equipment and are heard when making LTR telephone calls.
  • Page 54 MISCELLANEOUS BUSY - Indicates that the LTR-Net or LTR radio system is currently busy (see “Busy Tone” on page 52). CALL SVC - Indicates that the transceiver is inoperative. Contact your system operator for service. DSBL BSY - Indicates that the transmitter is disabled by the conven- tional Transmit Disable On Busy feature (see page 50).

  • Page 55: Menu Mode Messages

    MISCELLANEOUS OUT-LOCK - Indicates that the synthesizer is unlocked. Refer to “Transceiver Service” on page 61 for more information. PROG ERR - Indicates an EEPROM read error. Refer to “Transceiver Service” on page 61 for more information. SLEEPING - Indicates that the transceiver has been temporarily disabled by the system operator.

  • Page 56: Rechargeable Battery Pack

    MISCELLANEOUS SCN CONT - Scan continue on-off • ON or OFF SCN SAVE - Scan list save • ON = save, OFF = not saved SCN TYPE - Selects type of scanning • SYSTEM - Both system and group • GROUPS - Group scanning only •...
  • Page 57 MISCELLANEOUS Typical operating time before recharging is required is 7.3 hours. This assumes that the transceiver is transmitting at high power 5% of the time, receiving and producing audio 5% of the time, and in the standby mode (receive with audio muted) 90% of the time. If the low-power mode is selected or different times are spent in these modes, operating time varies accordingly.

  • Page 58: Battery Charger Operation

    MISCELLANEOUS Battery Charger Operation Fast Charge Slot Slow Charge Slot Fast Charge Slot Indicator Slow Charge Slot Indicator The charger shown above has two slots in which to place a battery. The back slot is for fast charging and the front slot is for slow charging. Only the battery can be inserted in the fast charge slot and the entire transceiver can be inserted in the slow charge slot if desired.

  • Page 59: Speaking Into Microphone

    MISCELLANEOUS charging is occurring, and charging continues at the slow rate until the battery is removed from the charger. Approximate charge time in this slot for a fully discharged battery is 20 hours (with transceiver power off if applicable). If transceiver power is on, this slot basically maintains the charge of the battery.

  • Page 60: Licensing

    INDEX Licensing A government license is usually required to operate this transceiver on the air. Your system operator will normally handle the licensing requirements. Transceiver Service If your transceiver is not operating properly, “OUT-LOCK”, “PROG ERR”, “SLEEPING”, or “CALL SVC” may be displayed. It may be possible to clear the first two conditions by turning power off and then on again to reset the control logic.
  • Page 61 INDEX Controls On-Off/Volume Indicator Option Switch Auxiliary Call Group PTT Switch Busy 14, 49 Top Panel Call 13, 25 Conventional Mode Directed Group Call Conventional Mode Scanning Group Scan List Keypad Lock Low Battery Low Power DIAL Key Monitor Mode Dial Mode Priority Exiting...
  • Page 62 INDEX Sending a Number Service Numeric Display Mode Slow Charge Speaking Into Microphone Special Calls On-Off/Volume Control SQL Key Operating Modes Squelch Adjust Operation at Extended Range Standard Group Call 46, 48 Option Switch 12, 23, 35 Placing Monitor Mode Select Receiving Storing a Number STR Key...
  • Page 63 Part Number 002-7200-600 9-01 hph Printed in U.S.A.

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