RANGER HANDBOOK

CHAPTER SEVEN
COMMUNICATIONS
GENERAL. The AN/PRC-119 is composed of a receiver and a transmitter.
Together, the receiver-transmitter has many capabilities and features that enable
you to perform your mission more effectively. The radio can operate in Single
Channel mode or Frequency Hopping mode. The radio has approximately 2,320
SC Channels and includes voice and digital communication. The operating
voltage for the manpack radio is 13.5 volts from the primary battery. The range
of the manpack radio is 5-10 KM on Hi power. This range is based upon line of
sight and is derived from averages achieved under normal atmospheric and
weather conditions. Ranges depend upon location, sighting, weather, and
surrounding noise level, among other factors. The AN/PRC-126 set covers the
30 to 88 MHZ band in 25 KHZ increments. It is a lightweight radio that is best
utilized for squad operations. If properly maintained the AN/PRC-126 is an
excellent complement for the larger more powerful AN/PRC-119. The following
chapter outlines assembly, operation, and trouble-shooting for both radios.
7-1.THE AN/PRC-119
a. Manpack Radio Assembly. To assemble a manpack radio you must first
check and install a battery.
(1) Inspect the battery box for dirt or damage
(2) Stand RT on front panel guards
(3) Check battery life condition (you will be using the rechargeable BB-390
batteries)
(4) Place battery in box
(5) Close battery cover, and secure using latches
(6) Return radio to upright position
(7) If used battery was installed, enter the battery life condition into radio by
performing the following
(8) Set FCTN to LD
(9) Press BAT; then CLR
(10) Enter number recorded on side of battery
(11) Press STO
(12) Set FCTN to SQ ON
b. Antenna
(1) Inspect whip antenna connector on antenna and on radio for damage
(2) Screw whip antenna into base
(3) Hand tighten
(4) Carefully mate antenna base with RT ANT connector
(5) Hand tighten
(6) Position antenna as needed by bending goose neck
7-1