VTM-91-772/C
-6-
SECTION 3
FUNCTIONAL DESCRIPTION
3-1. INTRODUCTION
This chapter provides the functional description of the antenna.
3-2. OVERALL LEVEL
The antenna is a base mounted, high-power antenna which provides omnidirectional coverage for
general purpose communications reception and transmission from 2 to 30 MHz when used in either
a twin whip and tuner configuration or single whip and tuner configuration.
3-3. MAJOR FUNCTION LEVEL
The antenna consists of an aluminum radiating element and an integral fibreglass insulator/mounting
flange. The aluminum radiating element tapers from approximately 8 inches in diameter at the base
insulator to 2 inches in diameter at the top. The integral fibreglass insulator/mounting flange isolates
the radiating element of the antenna from the ground and physically supports the element. The
insulator/mounting flange is constructed of high-strength, laminated epoxy fibreglass materials.
When assembled, the overall length of the antenna is approximately 35 feet. The antenna
disassembles into 2 sections.
When the antenna is used for transmitting, an antenna coupler is required. When used for receiving,
the antenna requires the use of a termination box. For transmitting or receiving, a feedwire assembly
is required to connect the antenna to the antenna coupler or termination box.
3-3.1 Feedwire Assembly. The feedwire assembly is provided by installing activity and provides
a means of attaching the antenna tuner or termination box to the antenna.
