of the received pictures are to be made
Sets AN/TXC-1B, -1C, and -1D, and also in
w i t h a hectograph pad. This is a
Facsimile Set AN/TXC-1A when modified accord-
ing to MWO SIG 11-375B-(1), Modification of
specially prepared paper containing a
F a c s i m i l e Set AN/TXC-1A to Provide an
dye coating with a high-resistance outer
External Loudspeaker (par. 11).
coating that is burned by the spark from
the transceiver stylus. The paper fur-
nished is 12 inches by 1811/16 inches in
circuit. MWO SIG 11-2258-1, Modification of Facsimile
Sets AN/TXC-1 to Provide an Audible Signaling Device,
size. Two packages, each containing
gives instructions for connecting a jack to add a loud-
250 sheets, are furnished.
speaker to Facsimile Set AN/TXC-1. The tones that
precede a facsimile transmission will then be audible to
the receiving operator. This external speaker is of the
Running spares are supplied with Facsimile Set
permanent magnetic type, 4 inches in diameter, with a
AN/TXC-1(*) and are packed in the crate that
250-ohm output transformer to match the impedance of
contains the component in which they are used.
the transceiver talk-back circuit. The speaker and trans-
Spares are supplied for all normally expendable
former are contained within a steel box which is 45/8 inches
high, 45/8 inches wide, and 2 inches deep. This box is
items such as tubes, pilot lamps, and fuses. The
fitted with a mounting clamp.
following is a list of the items supplied:
1 tube, type 1B46
of direct recording paper are furnished for use with
1 tube, type 1B47
Facsimile Transceiver TT-1(*)/TXC-1.
1 tube, type 6AC5GT/G
(1) Teledeltos paper or Timefax NDA is used
3 tubes, type 7C5
in direct recording. They are dry papers
1 tube, type 7C7
with dark undercoating and light top
3 tubes, type 7L7
coating. The coating is burned off by a
2 tubes, type 7N7
spark from the transceiver stylus during
1 tube, type 7S7
the direct recording operation. The
1 tube, type 5Z3
paper furnished is 12 inches by 1811/16
1 tube, type 884
inches in size. Four packages, each con-
2 tubes, type RMA R1130B
taining 250 sheets of Teledeltos grade H,
2 tubes, type 1635
or Timefax NDA, are furnished. This
1 tube, type 1645
paper is nonduplicating.
4 tubes, type 5651
(2) Timefax A paper is used in the direct
1 tube, type 5652
recording process when multiple copies
1 tube, type 5879
