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FM 11-23
E, and C (fig. 14-9) and developed in paragraphs
14-24, 14-25, and 14-26 will provide a base of in-
formation for all other deployment patterns. For
reference convenience, site A, Site E, and Site C
are referred to in paragraphs 14-24, 14-25, and
14-26 as a heavy tropo team site, a heavy tropo
platoon site, and a heavy tropo company site,
respectively. Single sideband radio at each tropo
site is initially used to provide communications
for tropo link or system lineup. After the tropo
links are operational, the tropo equipment techni-
cal channel may be used for technical control or-
ders.
$ 4-24. Heavy Tropo Team Site
a. General. In the company deployment shown
(fig. 14-10), the heavy tropo team chief at site A
is the site commander, and he is responsible for
the operation and maintenance of the equipment
and for the administration of the site. Because
site A has only one tropo terminal, it has the
minimum number of major items of equipment
required for a complete tropo site. A site with but
one terminal has a relatively simple site layout
stalled by one of the four heavy tropo sections of
the company (para 14-2). Although the requirements
for tropo terminal elevation are not as demanding
as those for VHF or UHF multichannel
radio installation, heavy tropo terminals should
be sited on high ground whenever possible. Tropo
site elevation is important because tropo path
loss is highly dependent on the angle the antennas
at each end of the path make with the horizon
and also because antenna beam clearance of
nearby obstructions is imperative. Tropo terminal
siting is covered in detail in the applicable tropo
equipment technical manual. The deployment of
the heavy tropo company can range from interconnected
links which include all the tropo terminals
of the company (fig. 14-7) to four geographically
separated links (fig. 14-8). In figure 14-9,
a heavy tropo company type deployment is shown
that is between these extremes. In this illustration,
heavy tropo sites A, B, C, and D are interconnected
and sites E and F are connected as terminals
in a single link. Although no attempt is
made here to show all types of heavy tropo company
deployment, the operational concept and
type equipment configurations shown at sites A,
LEGEND:
HEAVY TROPO TERMINAL FM 11-367-8-1
Figure 14-7. Heavy tropo company deployed as interconnected
links.
14-9