telephone handset or which may be coupled
of a front panel selector switch) and Rectifier
inductively to certain types of lines that have no
Power Unit PP-86(*)/TXC-1 (fig. 3) which
ringing or signaling circuits. An amplitude-
supplies operating power to the transceiver and
modulated (am.) 1,800-cycle carrier is transmitted
dust removal blower and operates from an
and received.
alternating-current (ac) source of 115 volts at 60
b. Radio Circuits. When used with radio com-
cycles per second (cps).
munication circuits, the facsimile transceiver can
be connected in several ways with auxiliary
equipment to produce different types of radio
Facsimile Set AN/TXC-1(*) may be used with
signals.
either wire or radio communication circuits.
(1) Subcarrier amplitude modulation (SCAM),
a. Wire Circuits. When used with wire lines,
When transmitting, the facsimile trans-
the facsimile transceiver can be connected directly
ceiver is connected to the microphone
to the line by one of several input and output
circuit of a conventional am radiotele-
terminals of various impedances and levels. The
phone transmitter to produce an am
transceiver also can be connected to the line
radio signal. When receiving, the out-
through a coupling coil, which may be coupled
put of a conventional am radio receiver
magnetically to the receiver of a conventional
