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 (Part No. 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
12345
A
3
24
A
Repeater
ID
X
242-200 X-
2 = 85W
8 = 800 MHz
9 = 900 MHz
3
3 = 800-900 MHz
2
VIKING VX
4 = 175W
