E.F. Johnson Company VIKING VX 242-2008-202 User manual

1-1 October 1995
Part No. 001-2008-202
VIKING®VX
800 MHz LTR REPEATER
25-85 Watts, Model 242-2008-202
Fifth Printing
May 1998
Supersedes 001-2008-202
Part No. 001-2008-203 5-98mwp Printed in U.S.A.

1-3 October 1995
Part No. 001-2008-202
VIKING®VX
800 MHz LTR REPEATER
PART NO. 242-2008-232/234
Copyright© 1998 by E.F. Johnson Company
E.F. Johnson company designs and manufactures two-way radio equipment to serve a wide variety of communications needs.
EFJohnson®produces equipment for the mobile telephone and land mobile radio services which include business, industrial,
government, public safety, and personal users.
LAND MOBILE PRODUCT WARRANTY
The manufacturer’s warranty statement for this product is available from your product supplier or from the EF Johnson, Inc.,
299 Johnson Avenue, Box 1249, Waseca, MN 56093-0514. Phone [phone].
WARNING
DO NOT allow the antenna to touch or come in very close proximity with the eyes, face, or any exposed body parts while the
radio is transmitting.
DO NOT operate the transmitter of a mobile radio when a person outside the vehicle is within one (1) meter of the antenna.
DO NOT operate the transmitter of a stationary radio (base station, repeater or marine radio) when a person is within one (1)
meter of the antenna.
DO NOT operate the radio in explosive or flammable atmospheres. The transmitted radio energy could trigger blasting caps
or cause an explosion.
DO NOT operate the radio without the proper antenna installed.
DO NOT allow children to operate or play with this equipment.
NOTE: The above warning list is not intended to include all hazards that may be encountered when using this radio.
This device complies with Part 15 of the FCC rules. Operation is subject to the condition that this device does not cause harm-
ful interference. In addition, changes or modification to this equipment not expressly approved by EF Johnson could void the
user’s authority to operate this equipment (FCC rules, 47CFR Part 15.19).
SAFETY INFORMATION
Proper operation of this radio will result in user exposure below the Occupational Safety and Health Act and Federal Commu-
nication Commission limits.
The information in this document is subject to change without notice.
EF Johnson will not be liable for any misunderstanding due to misinformation or errors found in this document.
LTR, Multi-Net, Viking Head/EFJohnson Logo, Call Guard and SUMMIT are registered trademarks of Transcrypt Interna-
tional, Inc. All other company and/or product names used in this manual are trademarks and/or registered trademarks of their
respective manufacturer.

TABLE OF CONTENTS
1
1 INTRODUCTION AND OPERATION
1.1 SCOPE OF MANUAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 REPEATER DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 REPEATER IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.4 MODEL NUMBER BREAKDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.5 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.6 PRODUCT WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.7 FACTORY CUSTOMER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.8 FACTORY RETURNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.9 REPLACEMENT PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.10 INTERNET HOME PAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.11 SOFTWARE UPDATES/REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.12 REPEATER OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
MAIN PROCESSOR CARD (MPC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
MAIN AUDIO CARD (MAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
INTERFACE ALARM CARD (IAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.13 REPEATER INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
HOME REPEATERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
INTER-REPEATER DATA COMMUNICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
MOBILE TRANSCEIVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.14 REPEATER DATA BUS SIGNALING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
MOBILE DATA MESSAGE ORDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
ID VALIDATOR OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
2 INSTALLATION
2.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
SITE PREPARATION AND ANTENNA INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 ENVIRONMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3 VENTILATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.4 AC POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.5 BATTERY BACKUP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.6 800W POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
AC INPUT REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.7 GROUNDING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
PROTECTION GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.8 UNPACKING AND INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.9 REPEATER DATA BUS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
MPC DATA BUS SWITCH SETTINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
MPC DATA BUS JUMPER SETTINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.10 CONNECTING RECEIVE AND TRANSMIT ANTENNAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
3 SOFTWARE
3.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
HOW TO USE THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
GETTING STARTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
COMPUTER DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
EEPROM DATA STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
COMMAND LINE OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
COLOR OR MONOCHROME OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

TABLE OF CONTENTS (CONT.)
2
3.2 REPEATER PROGRAM SOFTWARE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
INSTALLING THE SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
MINIMUM FREE MEMORY REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.3 REPEATER PROGRAMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
PROGRAM FILES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.4 ALIGNMENT SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.5 HELP F1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
4 PULL DOWN MENUS
4.1 MENU DISPLAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 FILE MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
LOAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
SAVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
SAVE AS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
NEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
PRINT REPEATER CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
DOS SHELL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
QUIT (ALT X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.3 EDIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
SETUP PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
SELECT REPEATER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
ALARM CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
REPEATER TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
DELETE REPEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
TELEPHONE PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.4 TRANSFER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
WRITE SETUP PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
READ SETUP PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.5 HARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
HSDB MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
RECEIVE/TRANSMIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
RF DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
REVISION/VERSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
MODE SELECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.6 TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
POWER AMPLIFIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
RECEIVER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
EXCITER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
FULL REPEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.7 UTILITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
COM PORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
DISPLAY MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
USER LEVEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
5 REPEATER PROGRAMMING
5.1 CREATING A NEW FILE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
SELECT REPEATER TO EDIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 ADDING A REPEATER TO A FILE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

TABLE OF CONTENTS (CONT.)
8
LIST OF FIGURES
1-1 REPEATER IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 PART NUMBER BREAKDOWN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 ALARM IN TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-4 REPEATER CARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2-1 BATTERY BACKUP CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 TEMPERATURE SENSOR CABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-3 POWER CABLE CONNECTOR AND SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-4 RACK MOUNTED REPEATERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-5 5-CHANNEL COMBINING SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-6 RJ-11 TO BNC MPC JUMPERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-7 RJ-11 TO RJ-11 MPC JUMPERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-8 ANTENNA CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-9 RJ-11 TO BNC ADAPTER MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-10 SINGLE REPEATER INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-11 TWO REPEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-12 THREE OR MORE REPEATERS INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2-13 MIXED VIKING VX REPEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2-14 MIXED VIKING VX AND CR1010 REPEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
3-1 REPEATER TEST MENU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-2 PROGRAMMING FLOWCHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
4-1 FILE MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 LOAD FILE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-3 SAVE FILE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-4 EDIT PROGRAMMING FLOWCHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-5 EDIT MENU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-6 REPEATER LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-7 ALARM CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-8 INPUT ALARMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-9 OUTPUT ALARMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-10 ALARM CROSS REFERENCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-11 REPEATER TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-12 DELETE REPEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-13 TRANSFER MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-14 HARDWARE PROGRAMMING FLOWCHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-15 WRITE SETUP PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-16 PROGRAM WRITE SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-17 READ SETUP PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-18 READING SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-19 HARDWARE MENU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-20 HSDB MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-21 MOBILE TRAFFIC MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-22 RF LINE MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-23 REVISION/VERSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-24 TEST PROGRAMMING FLOWCHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-25 TEST MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-26 LAPTOP CABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
5-1 SETUP PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
6-1 RECEIVER BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-2 U202 BLOCK DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

1-1 May 2000
Part No. 001-2008-204
INTRODUCTION AND OPERATION
SECTION 1 INTRODUCTION AND OPERATION
1.1 SCOPE OF MANUAL
This service manual provides installation, opera-
tion, programming, service, and alignment informa-
tion for the VIKINGVX LTRRepeater, Part No.
242-2008-232/234.
1.2 REPEATER DESCRIPTION
The VIKING VX repeater is designed for opera-
tion in a Johnson LTR system. It operates on the 800
MHz channels from 851-869 MHz (repeater transmit).
The repeater receive frequencies are 45 MHz below
these frequencies (806-824 MHz). Channel spacing is
25 kHz and RF power output is adjustable from 25 to
85 watts(PartNo. 242-2008-232).
This repeater is modular in design for ease of ser-
vice. There are separate assemblies for the logic
cards, receiver, exciter, power amplifier and power
supply sections.
This repeater is programmed with a laptop or per-
sonal computer using the repeater software, Part No.
023-9998-297.
1.3 REPEATER IDENTIFICATION
The repeater identification number is printed on a
label that is affixed to the inside of the repeater cabi-
net. The following information is contained in that
number:
Figure 1-1 REPEATER IDENTIFICATION
1.4 MODEL NUMBER BREAKDOWN
The following breakdown shows the part num-
ber scheme used for the Viking VX.
Figure 1-2 PART NUMBER BREAKDOWN
20XXX
Week Year A= Waseca
Number
Warranty
Plant
Date
Manufacture
Letter
Revision
12345A324A
Repeater
ID
X242-200 X- 2 = 85W
8 = 800 MHz
9 = 900 MHz
3
3 = 800-900 MHz
2
VIKING VX
4 = 175W

INTRODUCTION AND OPERATION
1-2
May 2000
Part No. 001-2008-204
1.5 ACCESSORIES
The accessories available for the Viking VX LTR
repeater are listed in Table 1-1. A brief description of
some of these accessories follows.
2000 Series Service Kit- This kit includes an extender
card, extender cables,TIC bias cable and programming
cable. These items are used when tuning the repeater
and while troubleshooting.
Battery Backup Option - It includes the +26V DC
battery backup modulethat resides in the power supply
and the necessary interconnect cabling to connect the
repeater to the batteries (see Section 2.5).
Companding Module - This enhances the receive and
transmit audio when used in conjunction with the Tele-
phone Interface Card (TIC).
Three Foot Cable - This is a 3’ RG-58 coax cable with
BNC male connectors for the HSDB (High Speed Data
Bus).
Six Foot Cable - This is a 6’ RG-58 coax cable with
BNC male connectors for the HSDB (High Speed Data
Bus).
Custom Frequency - This is a factory frequency pro-
gramming and repeater setup.
PGMR 2000 Programming Software- 3.5" program-
ming disk used to program the repeater.
Service Microphone - This is a speaker and micro-
phone combination that plugs into the MAC connec-
tors. The microphone provides local audio and push-
to-talk, while the speaker provides local audio adjusted
with the volume control.
Table 1-1 ACCESSORIES
Accessory Part No.
2-Wire Telephone Interface Card (TIC) 023-2000-370
LTR System ID Validator 023-4408-500
2000 Series Service Kit1250-2000-230
Battery Back-Up Option2023-2000-835
3’ RG-58 BNC M-M HSDB cable 023-4406-505
6’ RG-58 BNC M-M HSDB cable 597-3001-214
Custom Frequency Programming & Setup 023-2000-100
PC Programmer PGMR Software 023-9998-297
Programming Cable Kit 023-2000-195
Service Microphone 589-0015-011
50 ohm Termination HSDB 023-4406-504
RJ-11 to RJ-11 cable 597-2002-200
Telewave Combining Systems High Power
5-channel 115V AC3585-1157-135
5-channel 230V AC3585-1157-145
Telewave Combining Systems Low Power
3-channel 115V AC4250-2008-054
3-channel 230V AC4250-2008-064
5-channel 115V AC5250-2008-055
5-channel 230V AC5250-2008-065
5-channel 115V AC6250-2008-050
5-channel 230V AC6250-2008-060
10-channel 115V AC7250-2008-051
10-channel 230V AC7250-2008-061
15-channel 115V AC8250-2008-052
15-channel 230V AC8250-2008-062
20-channel 115V AC9250-2008-053
20-channel 230V AC9250-2008-063
Duplexer (high power only) 585-1157-101
RF Lightning Protector10
Type N lightning arrestor (low pwr only) 585-0898-001
Polyphaser™585-0898-003
Floor Mount 19”Open Rack11
7’ with accessories, setup and test 023-2000-216
7’ 6”with accessories, setup and test 023-2000-217
8’ with accessories, setup and test 023-2000-218
AC Power Distribution
AC Power Strip 115V AC12 597-1004-010
AC Power Stirp 230V AC12 023-2000-212
1Includes: extender card, extender cables, TIC bias cable
and programming cable kit.
2+26V DC input with cable
32-antennas and 1-rack.
41-antenna and 1-rack (single rack configuration)
51-antenna/1-8’rack (single rack configuration)
61-antenna/1-additional rack (combining rack included)
71-antenna/2-additional racks (combining rack included)
82-antennas/3-additional racks (combining rack included)
92-antennas/4-additional racks (combining rack included)
10 1-lightning protector per antenna.
11 Accessories include all mounting hardware, rack ground
bar and wire to repeaters.
12 1-per 3 repeaters Low Power
1-per 2 repeaters High Power
Table 1-1 ACCESSORIES
Accessory Part No.

INTRODUCTION AND OPERATION
1-3 May 2000
Part No. 001-2008-204
RF Lightning Protector - This accessory provides
lightning, static and surge protection on the AC power
line. This line protector is rack mounted with multiple
outlets.
RJ-11 to RJ-11 Cable - This three foot cable is used to
connect two or more repeaters to the high speed data
bus through the modular jack on the rear of the repeater.
1.6 PRODUCT WARRANTY
The warranty statement for this transceiver is
available from your product supplier or from the
Warranty Department
E.F. Johnson
299 Johnson Avenue,
Box 1249,
Waseca, MN 56093- 0514
This information may also be requested by phone
from the Warranty Department as described in Section
1-4. The Warranty Department may also be contacted
for Warranty Service Reports, claim forms, or any
questions concerning warranties or warranty service
by dialing [phone].
1.7 FACTORY CUSTOMER SERVICE
The Customer Service Department of the E.F.
Johnson provides customer assistance on technical
problems and the availability of local and factory
repair facilities. Regular Customer Service hours are
7:30 a.m. - 5:30 p.m. Central Time,
Monday - Friday. The Customer Service Department
can be reached using one of the following telephone
numbers:
Toll-Free: [phone]
(From within continental United States only)
International: [phone]
FAX: [phone]
E-Mail: First Initial/Last [e-mail]
(You need to know the name of the person you want to
reach. Example: [email protected]om)
NOTE: Emergency 24-hour technical support is also
available at the 800 and preceding numbers during off
hours, holidays, and weekends.
When your call is answered at E.F. Johnson, you
will hear a brief message informing you of numbers
that can be entered to reach various departments. This
number may be entered during or after the message
using a tone-type telephone. If you have a pulse-type
telephone, wait until the message is finished and an
operator will come on the line to assist you. When
you enter some numbers, another number is requested
to further categorize the type of information you need.
You may also contact the Customer Service
Department by mail. Please include all information
that may be helpful in solving your problem. The
mailing address is as follows:
E.F. Johnson Company
Customer Service Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.8 FACTORY RETURNS
Repair service is normally available through local
authorized E.F. Johnson Land Mobile Radio Service
Centers. If local service is not available, the equipment
can be returned to the factory for repair. However, it is
recommended that you contact the Customer Service
Department before returning equipment because a ser-
vice representative may be able to suggest a solution
to the problem so that return of the equipment would
not be necessary.
Be sure to fill out a Factory Repair Request Form
#271 for each unit to be repaired, whether it is in or
out of warranty. These forms are available free of
charge by calling the repair lab (see Section 1-4) or by
requesting them when you send a unit in for repair.
Clearly describe the difficulty experienced in the space
provided and also note any prior physical damage to
the equipment. Then include a form in the shipping
container with each unit. Your telephone number and
contact name are important because there are times
when the technicians have specific questions that need
to be answered in order to completely identify and
repair a problem.

INTRODUCTION AND OPERATION
1-4
May 2000
Part No. 001-2008-204
When returning equipment for repair, use a PO
number or some other reference number on your
paperwork in case you need to call the repair lab about
your unit. These numbers are referenced on the repair
order and it makes it easier and faster to locate your
unit in the lab.
Return Authorization (RA) numbers are not nec-
essary unless you have been given one by the Field
Service Department. RA numbers are required for
exchange units or if the Field Service Department
wants to be aware of a specific problem. If you have
been given an RA number, reference this number on
the Factory Repair Request Form sent with the unit.
The repair lab will then contact the Field Service
Department when the unit arrives.
1.9 REPLACEMENT PARTS
E.F. Johnson replacement parts can be ordered
directly from the Service Parts Department. To order
parts by phone, dial the toll-free number as described
in Section 1-4. When ordering, please supply the part
number and quantity of each part ordered. E.F.
Johnson dealers also need to give their account num-
ber. If there is uncertainty about the part number,
include the designator (C112, for example) and the
model number of the equipment the part is from.
You may also send your order by mail or FAX.
The mailing address is as follows and the FAX num-
ber is shown in Section 1-4.
E.F. Johnson
Service Parts Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.10 INTERNET HOME PAGE
The E.F. Johnson has a home page on the World
Wide Web that can be accessed for information on
such things as products, systems, and regulations. The
address is http://www.transcrypt.com.
1.11 SOFTWARE UPDATES/REVISIONS
All inquiries concerning updated software, its
installation and revisions should be directed to the
Customer Service Department (see Section 1-4).
1.12 REPEATER OPERATION
1.12.1 MAIN PROCESSOR CARD (MPC)
Refer to Figure 1-4.
•Programming Jack
J1 provides input connection from the computer
and the "flash memory" in the MPC. The program-
ming information in an IBMPC programs the MPC
directly from the serial card through an interconnect
cable to the COM1 or COM2 port.
•Reset
S1 provides a manual reset of the Main Processor
Card (MPC). A manual reset causes a complete
power-up restart.
•Display and LEDs
Each combination of DS1 display read-out and
CR4/CR5 indication refers to an active alarm. See
Table 1-2 for alarms and definitions. LED indica-
tions: CR1 is blinking; MPC is operational, CR2 on;
high power, off is low power and CR5 on; indicates an
LTR Repeater.
Figure 1-3 ALARM IN TEST MODE
Alarms
When the Repeater is in Test mode the safety
measures are disabled. Therefore, if the Repeater is
keyed for an extended period and the power amplifier
temperature increase, thermal shutdown will not
occur. There are pop-up windows that appear in the
Test mode screens to alert the user that there is an
alarm and action should be taken. Refer to Figure 1-3
for an example of this type of alarm.
NOTE: Safety measures are disabled
RF Thermal Sense Alarm Condition Exists
Ok

INTRODUCTION AND OPERATION
1-5 May 2000
Part No. 001-2008-204
Figure 1-4 REPEATER CARDS
IACMACMPC
J502
J501
J500
GRN
YEL
YEL
RED
RED
PROG
JACK
RESET
ON/OFF/VOL
LOCAL
MIC
SPKR
EXT SPKR
XMIT
MOBILE
SWITCH
HANG
CWID
+15V
GND
TP
J103
J100
GND
A D
LEVEL
R236
J102
J101
J104
J1
S1
CR1
CR2
CR4
DS1
S508
RF INTERFACE
BOARD
EXCITER/RECEIVER
PA
CR3
CR5
+5V
-5V
+15V
+15V ACC

INTRODUCTION AND OPERATION
1-6
May 2000
Part No. 001-2008-204
Table 1-2 ACTIVE REPEATER ALARMS
Alarm No. DS1 CR3 CR4 Definition
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
32
33
34
35
36
37
38
39
40
41
42
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
0
1
2
3
4
5
6
7
8
9
A
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
Test Mode
IAC input 1 Active
IAC input 2 Active
IAC input 3 Active
IAC input 4 Active
IAC input 5 Active
IAC input 6 Active
IAC input 7 Active
IAC input 8 Active
MAC Processor Alarm
HSDB Processor/Cable Alarm
IRDB Cable Alarm
RNT/CIM Channel Problem Alarm
TIC Processor Alarm
MMC Processor Alarm
VNC Alarm
AC Power Failure
Battery Power Failure
Power supply thermal sense
Fan 1 current out of specification
Fan 2 current out of specification
IAC mismatch
RF shutdown
RF Half Power Mode
Thermal sense in RF portion
RF Finals 1-2 power out failure
RF Finals 3-4 power out failure
RF VSWR Failure
Normal Synthesizer Tx Lock failure
Normal Synthesizer Rx Lock failure
HS Synthesizer Tx Lock failure
HS Synthesizer Rx Lock failure
RF Quarter Power Alarm

INTRODUCTION AND OPERATION
1-7 May 2000
Part No. 001-2008-204
1.12.2 MAIN AUDIO CARD (MAC)
Refer to Figure 1-4.
•External Speaker Jack
J104 provides repeater audio output to an external
speaker. The local volume control adjusts the volume
level of this speaker.
•Speaker/Microphone Jacks
J102 provides audio input from a microphone.
J101 provides the receive audio to the microphone.
•Local On/Off/Volume Control
R236 provides control of the receive audio output
to J101 and J104. Turning this control clockwise past
the detent applies voltage to the local audio amplifier.
•A D Level Test Point
J100 provides audio/data level output for test
level checks.
•Ground
J103 is connected to ground for test equipment
when monitoring test point J100.
1.12.3 INTERFACE ALARM CARD (IAC)
Refer to Figure 1-4.
•Voltage Test Output
J502 provides a +15V test point on the IAC.
•Ground
J501 is connected to ground for test equipment
when monitoring voltage test point J502.
•A D Level Test Point
J500 provides a test point to monitor audio and
data levels, AC fail and thermal sensor.
•Power Supply On/Off Switch
S508 turns the power supply DC voltages on and
off from the IAC in the front of the repeater.
•Power Indicator
CR501 indicates the +5V supply is at normal
level and applied to the IAC. CR524 indicates -5V
supply is at normal level and applied to the IAC.
CR523 indicates the +15V accessory supply is at nor-
mal level. CR525 indicates that the +15V supply is at
normal level and applied to the IAC.
•CWID Indicator
Indicates that the CW Identification is being
transmitted on the lowest-frequency repeater. The
CWID is a continuous-wave (CW) transmission of the
station call letters in Morse Code to satisfy the station
identification requirement. The CWID is programmed
into the repeater memory. This indicator also is used
when an alarm is transmitted with Morse code.
•Hang Indicator
Indicates that the hang word is being transmitted
by the repeater. This word is transmitted on calls in
which the channel is held for the duration of the call
and not just for the duration of the transmission. The
hang word tells the mobiles to stay on the same chan-
nel and not re-access the system when responding to a
call.
•Switch Call Indicator
Not used in the LTR repeater.
•Mobile Call Indicator
Mobile-to-repeater transmission in progress is
indicated by the Mobile Call Indicator.
•Xmit Indicator
This indicates that the repeater transmitter is
keyed by the logic.

INTRODUCTION AND OPERATION
1-8
May 2000
Part No. 001-2008-204
1.12.4 POWER SUPPLY
The 2000 Series Repeater Power Supply is a
quad output 800W supply with power factor correc-
tion. A battery back-up module, PN 023-2000-830,
can be added to the power supply to provide automatic
battery revert in the event of AC power failure (see
Section 2.5) The Battery Back-Up module charges the
batteries when AC is present at the power supply (see
Section 2.4 and 8.5).
1.13 REPEATER INFORMATION
1.13.1 INTRODUCTION
NOTE: The VIKING VX does not require a separate
LTR logic drawer.
The repeater model used in an LTR system is
determined by frequency range. 800 MHz systems
use the VIKING VX (-232/-234) or LTR 8000s, UHF
use 1010s, and VHF use 1100s. Repeaters operate on
a single frequency (one repeater is required for each
channel). The MPC in each repeater performs all con-
trol and signaling functions on that channel. Informa-
tion is exchanged between repeaters via a high-speed
data bus (modular cable). No system controller is
required.
Optional accessories, such as the Telephone
Interconnect Card (TIC) can be installed in the
repeater and the ID Validator drawer can be installed
in the repeater rack. Refer to Johnson LTR ID Valida-
tor Manual, Part No. 001-4408-501 and Johnson Tele-
phone Interconnect Card Manual, Part No. 004-2000-
370 for detailed information.
1.13.2 HOME REPEATERS
All mobiles have one of the site repeaters
assigned as its "Home" repeater. This is the repeater
from which it receives most of its control information.
When a mobile is not placing or receiving a call, it is
always monitoring its Home repeater to determine
which channel is free and if it is being called by
another mobile.
The Home repeater is always used to make a call
unless it is busy. When the Home repeater is busy,
any other repeater in the site may then be used. Up to
250 ID codes are assigned to each repeater. An ID
code and Home repeater number are the "address" of
the mobiles in the system. Therefore, up to 1250 sep-
arate addresses can be assigned in a 5-repeater system
and up to 5000 can be assigned in a 20-repeater sys-
tem. An ID code may be assigned to an individual
mobile or a group of mobiles as required.
1.13.3 INTER-REPEATER DATA COMMUNICA-
TION
Data communication between VIKING VX and
LTR repeaters at a site is via a high-speed data bus.
This bus cable is installed in a daisy-chain manner
between repeaters. If both VIKING VX and LTR
repeaters are located at a site, 20 repeaters can be
interconnected. Refer to Section 1.9 for information
on connecting the data bus.
1.13.4 MOBILE TRANSCEIVERS
The mobile and handheld transceivers used in an
LTR system must be compatible with the type of sig-
naling in use and also the frequency range.
1.14 REPEATER DATA BUS SIGNALING
1.14.1 GENERAL
A single-line serial data bus interconnects the
logic units of all the LTR repeaters at the site. The
first repeater powered on generates the synchroniza-
tion pulse that is used by all other repeaters to deter-
mine their time slot on the data bus. If all repeaters are
powered on at the same time, the lowest numbered
repeater generates the synchronization pulse. There
are 21 slots with 1-20 used for repeater reporting and
21 used by the ID Validator (see Section 1.14.3). The
time slot used by a repeater is determined by the num-
ber assigned to that repeater by the programming in
the MPC. Repeater 1 uses time slot 1, repeater 5 uses
time slot 5, and so on. The data rate on the repeater
data bus is 18,750 bits per second.
In its time slot, each repeater places information
on the data bus indicating its status. If a repeater is
not busy, only start bits appear in its slot. If a repeater
is busy, it places in its slot the Home repeater and ID
code of the mobile receiving the call on that repeater.
If a repeater number is unassigned, nothing appears in
that time slot.

INTRODUCTION AND OPERATION
1-9 May 2000
Part No. 001-2008-204
1.14.2 MOBILE DATA MESSAGE ORDER
Each repeater monitors all the time slots on the
repeater data bus. If it detects its number in another
time slot, it begins transmitting an additional data
message to its mobiles. This message tells mobiles
programmed to detect that ID code to go to that
repeater to receive a call. This additional message
continues for as long as the mobile is transmitting on
the other repeater.
The sequence of data messages transmitted on a
home repeater is as follows: Every third message is to
the mobile currently receiving a call on that repeater.
Then alternating between these messages are mes-
sages to its mobiles that have been trunked to other
repeaters. For example, assume that five different
mobiles on a five-repeater system are making calls. If
all have Repeater 1 as their home channel (not very
likely in actual practice), the data message order on
Repeater 1 is as follows: 1 2 3 1 4 5 1 2 3 and so on.
1.14.3 ID VALIDATOR OPERATION
If the ID Validator is used, it is programmed with
the status of up to all 5000 home repeater/ID code
combinations possible with a 20-channel system.
Each combination is programmed as either valid or
invalid. Information in the twenty time slots on the
repeater data bus is monitored. If an invalid home
repeater/ID code combination is detected, the ID Vali-
dator places in time slot 21 the number of the repeater
being used by the invalid mobile and also the ID code.
When a repeater detects its number in slot 21, it trans-
mits the turn-off code (31) to the mobile receiving the
call. That mobile then squelches and resumes moni-
toring its home channel. This effectively disables the
invalid mobile because it cannot talk to anyone.
When the turn-off code is sent, the repeater places
"21" in the repeater position of its time slot to indicate
to the ID validator that turn-off has occurred.

INTRODUCTION AND OPERATION
1-11 May 2000
Part No. 001-2008-204
SPECIFICATIONS
GENERAL1
Frequency Range 806-824 MHz Receive, 851-869 MHz Transmit
Dimensions 9.125" H x 17" W x 20.9" D
AC Voltage/Frequency 100-240V AC/50-60 Hz
AC Current 0.40A (Standby), 1.7A (25W), 2.8A (85W)
AC Input Power45W(Standby), 199W (25W), 328W (85W)
DC Current at 26.5V DC 5.2A(25W),9.8A(85W)
Number of Channels 1 (Synthesized, programmable)
Channel Spacing 25 kHz
Channel Resolution 12.5 kHz
Temperature Range -30°C to +60°C (-22°F to +140°F)
Duty Cycle Continuous
FCC Type Acceptance ATH2422008, 25 to 85 watts
RECEIVER
12 dB SINAD 0.35 µV
20 dB Quieting 0.50 µV
Signal Displacement Bandwidth ±2 kHz
Adjacent Channel Rejection -85 dB
Intermodulation Rejection -80 dB
Spurious & Image Rejection -90 dB
Audio Squelch Sensitivity 12 dB SINAD
Audio Response +1/-3 dB TIA
Audio Distortion Less than 3% at 0.5W/16 ohms
Local Audio Power 0.5W/16 ohms
Audio Sensitivity ±1.5 kHz
Hum & Noise Ratio -45 dB
Frequency Spread 6 MHz
Frequency Stability ±1 PPM -30°C to +60°C (-22°F to +140°F)
TRANSMITTER
RFPower Out85W(Default setting), 25W(VariableSet Point)
Spurious Emissions -90 dBc
Harmonic Emissions -90 dBc
Audio Deviation ±3.5 kHz
LTR Data Deviation ±1 kHz
CWID Deviation ±2 kHz
Repeat Deviation ±1.5 kHz
Audio Response +1/-3 dB TIA
Audio Distortion Less than 2%
Hum & Noise (TIA) -45 dB
Frequency Spread 6 MHz
Frequency Stability ±1 PPM -30°C to +60°C (-22°F to +140°F)
Emission Designators 14K0F3E, 16K0F3E, 14K0F3D, 16K0F3D, 14K0F1D,
1. These general specifications are intended for reference and are subject to change without notice. Contact the Systems
Applications consultants for guaranteed or additional specifications.
FCC Compliance Parts 15, 90

2-1 May 2000
Part No. 001-2008-204
INSTALLATION
SECTION 2 INSTALLATION
2.1 INTRODUCTION
Information in this section tells how to set up the
repeater for operation in an LTR system. It is assumed
that the repeater has been previously aligned at the
factory or as described in the alignment procedure in
Section 7.
Even though each repeater is thoroughly aligned
and tested at the factory, it is good practice to check
performance before it is placed in service. This
ensures that no damage occurred during shipment and
that the repeater is otherwise operating properly. Per-
formance testing is described in Sections 7.1, 7.2, 7.3
and 7.4.
2.1.1 SITE PREPARATION AND ANTENNA IN-
STALLATION
Site preparation and antenna installation are not
within the scope of this manual. Basic installation
requirements are discussed in the "Dealer Guide To
Site Preparation", Part No. 004-8000-100. Factory
installation is also available. Contact your Johnson
representative for more information.
2.2 ENVIRONMENT
The following conditions should be considered
when selecting a site for the Repeater.
Operating Temperature.
-30°C to +60°C (-22°F to +140°F).
Humidity.
Less than 95% relative humidity at 50°C.
Air Quality.
For equipment operating in a controlled environ-
ment with the Repeaters rack mounted, the airborne
particles must not exceed 30 µg/m3.
For equipment operating in an uncontrolled envi-
ronment with the Repeaters rack mounted, the air-
borne particles must not exceed 100 µg/m3.
NOTE: If the Repeater is installed in an area that ex-
ceeds these environmental conditions, the site should
be equipped with air filters to remove dust and dirt that
could cause the equipment to overheat. The cabinets
and filters should be placed on a maintainence sched-
ule.
When the repeaters are installed in an environ-
ment that contains small airborn particles, e.g. grain
dust or salt fog, the repeater cabinets need to be
sealed. A heat exchanger, i.e. air conditioner, is then
required to cool the cabinets. The air conditioners
must be suited for the environment. Each low power
repeater (85W) requires >1200 BTU/hr dissipation to
maintain exterior cabinet temperature. Each high
power (160W or 175W) requires >2100 BTU/hr dissi-
pation to maintaim exterior cabinet temperature.
2.3 VENTILATION
The RF modules and the power supply are
equipped with fans, controlled by thermostats, that
force air through the equipment for cooling. The air
flow is from the front to the back of the equipment.
This permits the Repeaters to be stacked or rack
mounted (see Figure 2-4). There are a few consider-
ations when installing Repeaters to provide adequate
air circulation.
1. The Repeaters should be mounted with a minimum
of 6 inches clearance between the front or back of
the cabinet for air flow. The power supply requires
a minimum of 18 inches at the back of the Repeater
for removal.
NOTE: Repeaters should not touch. Leave a mini-
mum of one empty screw hole (approximately 1/2")
between repeaters vertically especially for bottom
ventilation slots in high power repeaters.
•Cabinet enclosures must provide air vents for ade-
quate air circulation.
•Temperature and humidity must be considered
when several Repeaters are installed at a site. This
might require air conditioning the site.

INSTALLATION
2-2
May 2000
Part No. 001-2008-204
2.4 AC POWER
The AC power source to the Johnson VIKING
VX Repeater can be 120V AC or 240V AC. Nothing
need be done to the power supply for 240V AC opera-
tion. However, a 240V AC outlet requires that the
120V AC power plug be replaced. A locking AC
power cord is provided for the supply.
The 120V AC cord is a standard 3-wire grounded
cord used with a standard AC wall outlet. The outlet
must be capable of supplying a maximum of 328W (-
232) or 680W (-234). With the nominal 120V AC
input, the source must supply 3A for each 85W
repeater or 6A for each 175W repeater and should be
protected by a circuit breaker. It is recommended that
all of the repeaters in a rack should not be on the same
breaker in order to provide one operational repeater in
the event a breaker trips. An AC surge protector is
recommended for all equipment.
Each Repeater requires an outlet, so for a 5-chan-
nel system, a minimum of 5 outlets is required. An
additional three outlets should be added for test equip-
ment. The outlets must be within 3 feet of each
Repeater cabinet. Future system expansion should be
considered when electrical work is being planned for
the initial system.
The VIKING VX Repeater power supply can be
equipped with an optional 24V DC back-up in the
event of AC power failure. Since the transmitter will
remain on full power, if desired, the DC power source
musthave a current capability of about 15A per 85W
repeater (25A per175W repeater)or 75A for 5-85W
repeaters (125A for 5-175W repeaters). The multi-
coupler requires another 0.5A for a total system
requirement at 24V DC of75.5A for 85W repeaters
(125.5A for 175W repeaters).
2.5 BATTERY BACKUP
If the power supply is equipped with battery
backup, screw lugs are provided on the front of the
power supply for battery connections (see Figure 2-1).
A switch is provided for charging the battery or can be
off if a separate battery charger is used. A battery
temperature sensor connection is also provided. The
temperature sensor cable is shown in Figure 2-2. LED
indicators are provided to show Reverse Battery con-
nection, Charger On/Off and Battery Fault.
Figure 2-1 BATTERY BACKUP CONNECTOR
Figure 2-2 TEMPERATURE SENSOR CABLE
2.6 800W POWER SUPPLY
The power supply has four voltage output levels
(see Table 2-1). Each voltage is set to ±1% at +25°C
(+77°F). The output of this supply is capable or run-
ning any 2000 series repeater.
Each output is overload protected such that the
power supply current limits and automatically resets
when the overload is removed (see Table 2-1).
Each output is over voltage protected such that
the power supply shuts down when an over voltage
condition exists, usually when a component in the
supply has failed (see Table 2-2). The power supply
must be manually reset by toggling the Enable Line or
removing AC power for more than 10 seconds.
B- B+ TEMP ACTIVE
CHARGER
ON
CHARGER
FAULT
BATTERY
BATTERY
REVERSE
GROUND
EARTH
NEUTRAL
LINE
SWITCH
BATTERY
TEMP
TERMINAL
NEGATIVE
GND
BLK
WHT

INSTALLATION
2-3 May 2000
Part No. 001-2008-204
Table 2-1 OUTPUT VOLTAGES
Voltage Current Wattage
+26.5V 22A 583W
+15V5A 85W
+5.2V 5A 26W
-5V 1A 5W
Table 2-2 OVER VOLTAGE
Voltage Range
+26.5V +32V to +33V
+15V +16V to +18V
+5.2V +6V to +7V
-5V -6V to -7V
2.6.1 AC INPUT REQUIREMENTS
AC Input Voltage: 100-240V AC
Line Frequency: 50-60 Hz
AC In-rush: 60A maximum
Overall Efficiency: >70% at 100V AC
>80% at 240V AC
Lightning protection: 6kV for < 1ms
Power Factor: >0.97 at full load
Brown Out Voltage: 80V AC
Temperature -30°C - +60°C (full power)
Power factor correction per IEC555. The Power
supply has the following safety agency approvals
pending: UL1950, CSA22.2-950, TUV EN60950
(IEC950)
When the AC input voltage is below 90V AC, the
maximum output power is decreased to keep the input
current constant. If a battery back-up is installed, the
batteries take over when the AC input voltage falls
below 80V AC (dependant on power output).
The AC input connector is an IEC connector
equipped with a locking mechanism.
Figure 2-3 POWER CABLE CONNECTOR AND SCHEMATIC
9
7
12
11
10
8
6
5
4
3
2
1
A
B
C
J2
1
2
3
4
5
6
7
8
9
REPEATER
BACKPLANE
AC FAIL IN
POWER SWITCH
THERMAL SENSOR
+15V
N/C
N/C
-5V
TO
POWER HARNESS
GROUND
+15V
+5V
TO
RFIB
+26.5V
A
B
C
12
34
5
6
7
8
9
10
11
12
369
8
52
147
J2
BACKPLANE
N/C

INSTALLATION
2-4
May 2000
Part No. 001-2008-204
The operating temperature range is -30°C to
+60°C (-22°F to +140°F), i.e. the same as the repeater.
The fan is thermostatically controlled by the internal
temperature. When the internal heatsink temperature
reaches +45°C (113°F) the fan turns on. When the
heatsink temperature drops below +35°C (95°F) the
fan turns off. If the internal heatsink temperature
reaches +90°C (+194°F) the power supply turns off
until the heatsink temperature drops below +85°C
(+185°F). The over-temperature shutdown and restart
are automatic.
2.7 GROUNDING
CAUTION
PROPER SITE GROUNDING AND LIGHTNING
PROTECTION ARE VERY IMPORTANT TO PRE-
VENT PERMANENT DAMAGE TO THE REPEATER.
As in any fixed radio installation, measures
should be taken to reduce the possibility of lightning
damage to the Viking VX equipment. Proper ground-
ing eliminates shock hazard, protects against electro-
magnetic interference (EMI) and lightning.
Ground each piece of equipment separately. Do
not ground one piece of equipment by connecting it to
another grounded piece of equipment.
A good DC ground must be found or created at
the site. Rooftop site grounds can be researched
through the building management or architects. Tower
site grounds must be made with grounding rods. The
many techniques for providing adequate grounds for
towers and poles and for installing building ground
bus lines are beyond the scope of this manual. Refer
to National Electrical Code article 250 "Grounding
Techniques," article 800 "Communications Systems"
and follow local codes.
The ground bus should be routed to the floor area
within 5 feet of the system with a runner of 6 AWG or
larger solid copper wire or 8 AWG stranded copper
wire.
The outer conductor of each transmission line at
the point where it enters the building should be
grounded using 6 AWG or larger solid copper wire or
8 AWG stranded wire.
Secondary protection (other than grounding) pro-
vides the equipment protection against line transients
that result from lightning. There are two types of sec-
ondary protection, RF and Telephone Line. Use the
same wire sizes as specified for coaxial cables for any
ground connections required by the secondary protec-
tors.
•RF
An RF protector keeps any lightning strike to the
antenna feed line or tower from damaging the Repeat-
ers. Install this protection in-line with the combiner
and antenna feed line.
RF protectors are selected by calculating the
maximum instantaneous voltage at the output of the
combiner. Do this by using the following equation.
where:
VP= Voltage at the output of the combiner.
P = repeater output in watts
X= for VSWR=
1.05 1.10 : 1
1.09 1.20 : 1
1.13 1.30 : 1
1.17 1.40 : 1
1.20 1.50 : 1
1.30 1.86 : 1
Example: Repeater power output of 60W with a
VSWR of 1.3 : 1 (for this VSWR, X = 1.13):
VP= 87.52V
•Telephone Line
There are four types of protection suppressors for
telephone lines; Gas Tube, Silicon Avalanche Diode,
Metal Oxide Varistor and Hybrid.
The hybrid protector is ideal for Transcrypt Inter-
nation, Inc. equipment, and is strongly recommended.
A hybrid suppressor combines several forms of protec-
tion not available in just one type of device.
Vp 1.414 X() P50()()=
Vp 1.414 1.13()60 50()()=
Vp 1.59782 60 50()()=
Vp 1.59782 54.772256()=

INSTALLATION
2-5 May 2000
Part No. 001-2008-204
For example, a high-speed diode reacts first,
clamping a voltage strike within 10 ns, a heavy duty
heat coil reacts next to reduce the remainder of the
current surge, and a high-powered three-element gas
tube fires, grounding Tip and Ring.
2.7.1 PROTECTION GUIDELINES
Follow these guidelines for grounding and light-
ning protection. Each Repeater installation site is dif-
ferent; all of these may not apply.
•Ensure that ground connections make good metal-
to-metal contact (grounding rod, grounding tray,
metal conduit) using #6 gauge solid wire or braided
wire straps.
•With surge protectors, ensure that ground wires go
directly to ground, and not through other equipment.
•Run the ground wire for RF coax protectors directly
to ground.
•With coax protectors, ensure maximum instanta-
neous voltage does not exceed the rated voltage.
•Do not run ground wires parallel to any other wiring
(e.g. a ground wire parallel to a telephone line),
except other ground wires.
•Double check all equipment for good ground and
that all connections are clean and secure.
2.8 UNPACKING AND INSPECTION
Transcrypt Internation, Inc. ships the Repeater
securely crated for transportation. When the Repeater
arrives, ensure the crates remain upright, especially if
storing the crates temporarily.
When unpacking the Repeater, check for any visi-
ble damage or problems caused by shipping. If there
is obvious damage from shipping mishaps, file claims
with the carrier. If there appears to be any damage
caused before shipping, file a claim with Transcrypt
Internation, Inc. Contact Customer Service for assis-
tance (see Section1.7). Figure 2-4 RACK MOUNTED REPEATERS
POWERSTRIP
TXCOMBINER
DUPLEXER
RXMULTICOUPLER