Page 449 - Satellite Communications, Fourth Edition
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Satellite Access 429
Figure 14.6 Thin route message traffic (single channel per carrier, SCPC/FDMA).
(Courtesy of Telesat Canada, 1983.)
in Fig. 14.6. The Telesat Canada Thin Route Message Facilities pro-
vide up to 360 two-way circuits using PSK/SCPC (PSK phase-shift
keying). The remote terminals operate with 4.6-m-diameter antennas
with [G/T ] values of 19.5 or 21 dB/K. Transportable terminals are also
available, one of these being shown in Fig. 14.7. This is a single-
channel station that uses a 3.6-m antenna and comes complete with
a desktop electronics package which can be installed on the customers’
premises.
Figure 14.7 Transportable message station. (Courtesy of Telesat
Canada, 1983.)
