Form TD-206/G (fig. 3-3) must be used at
Transmission Cable and Test
every 1-mile interval, and a Multiplexer TD-
Set, Telephone AN/ PTM-7
204/U or TD-754/G (para 3-1) must be used at
a. Cable Assembly, Special Purpose,
every 40- mile interval.
b. Test Set, Telephone AN/PTM-7 (fig. 3-
(transmission cable) is required for pcm cable
10) is required by a lineman to maintain the
transmission between assemblages containing
pcm transmission cable. The AN/PTM-7 is
TD-204/U's or TD-754/G's. The transmission
used in conjunction with the TD-204/U or TD-
cable can be installed on the ground (including
754/G to localize troubles in a pcm
submerging in up to 3 feet of water), or
installed on poles or trees.
transmission cable is used, a Restorer, Pulse
Figure 3-10. Test Set, Telephone AN/PTM-7.