Figure 2-5.
Example of cuts, notches, and markings on tags.
PART F - UNATTENDED REPEATERS
41. There are three different types of unattended repeaters that you
should be familiar with.
These are placed within the cable line at
designated places.
You must ensure that you have the correct type of
unattended repeater when you go to construct a cable line.
42. One type of unattended repeater is the pulse form restorer TD-206B/G.
It is used in a cable system to retime and renew the original pulse train in
both directions of transmission. Thus, the TD-206B/G eliminates distortion
caused by noise and by bandwidth limitations. The distribution of TD-206B/G
in a cable system is 1.6 kilometers (1 mile) and 39 can be used before an
attended repeater site is required. Power for the TD-206B/G is provided by
the equipment within the terminal van at the attended repeater site. See
Figure 2-6.
43.
Some characteristics are-
a. Will handle 12/24/48/96 channels of communications.
b. Signal input is provided by the attended repeater.
SS0444
2-10
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