Modulation ................... FM
Output Power ................. 15 W (minimum)
Pulse Type ................... Binary pulse
Pulse Rate
12-channel .............. 576 kHz
24-channel .............. 1152 kHz
Vehicular Requirement
One 2 1/2-ton truck
6.
The auxiliary equipment used in multichannel radio systems provide
the flexibility and mobility to meet the demands of the mission.
Auxiliary
equipment
includes
the
shelters,
transporters,
and
generators identified in the previous paragraphs.
The following
paragraphs describe some of these in greater detail.
a. Shelters. Equipment shelters provide a secure mobile capsule
for multichannel radio assemblages.
They can provide insulation,
weatherproofing, and air conditioning to protect the electronic
components.
Their design includes equipment racks, electrical and
signal wiring, and storage space. Constructed of aluminum, they are
lightweight for transportation by land or air.
Shelters, where equiped with the required communications equipment,
form standard ATACS multichannel assemblages.
The following
paragraphs
describe
three
such
shelters
commonly
used
with
multichannel assemblages.
(1) Electrical equipment shelter S-250. The S-250 is a medium
sized shelter capable of storing loads up to 1 1/4 tons. It houses
equipment generally used at the division or corps levels.
The
shelter measures 85" X 79" and 70" in height (exterior), and weighs
630 pounds.
Its prime mover is a 1 1/4-ton truck, and it is fully
transportable by air.
Figure 1-36 shows the S-250 mounted on a
mobile multipurpose vehicle with a power unit trailer.
(2) Electrical equipment shelter S-280.
The S-280 is a large
shelter capable of transporting 2 1/2 tons of equipment. It stores
the larger assemblages found at the corps level. The shelter is 146"
X 87" and 83" in height (exterior), and weighs 1200 pounds.
It
requires a 2 1/2 ton truck as a prime mover on the ground.
Due to
its size, the S-280 has limited air transport capability.
1-49
SS0016
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