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Electronics Technician Volume 03-Communications Systems | Next
Figure 3-22.—Uhf radio RT-1107/WSC-3. |
Figure 3-20.—Uhf transceiver AN/WSC-5(V).
equipment. Figure 3-20 shows an AN/WSC-5(V)
transceiver installation.
This transceiver is capable of three types of
modulation/demodulation:
·
Frequency modulation/demodulation
with
pre-
emphasis/ de-emphasis for voice transmission/ reception.
·
Frequency modulation/demodulation without pre-
emphasis/de-emphasis for tone-group transmission/
reception.
·
Differentially encoded phase-shift keying using the
OM-43A/USC modem. The transceiver has a 70-MHz
interface for connection to either the modem or the TD-
1271B/U DAMA multiplexer.
All
four
NCTAMS
have
AN/WSC-5(V)
transceivers installed.
The C-11330/WSC-5(V) shown in figure 3-21
provides for remote control of the AN/WSC-5(V) for
teletype operation. The C-11330/WSC-5(V) is similar to
the C-9899/WSC-3, except that it uses +6 Vdc for the
keyline signal and indicator lamps. Both units have
identical front panels.
Transceiver AN/WSC-3(V)
To be consistent in this discussion, we will refer to
both the AN/WSC-3 and AN/WSC-3(V) transceivers
Figure 3-21.—Control-Indicator C-11330/WSC-5(V)
or C-9899/WSC- 3.
3-24
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