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C 0 N T R 0 L S
1.
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T 0 R S.
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All controls and indicators required for
the operation of the Type SSB-1 are avail
able at the front panels of the equipment.
These
I
trated
their functions, in table 1.
formation before operating the equipment.
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2.
S I M P L E X
c
P H 0 N E
Operation of a simplex radio telephone
station
remote desk sets such as shown in figure
(
11 is as follows:
a. Preliminary.
(
-
(1) Turn POWER switch
(2)
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(3) Turn TRANSMITTER switch
The three associated pilot lamps should be
on .
(4)
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TELEGRAPH
KEY
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TO POWER SOURCE
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Figure JJ. Simplex Radio Telephone Station
A ND
controls
and indicators are ill us
in
figure
10 and are listed, with
R A D I 0
0 P E R A T I 0 N.
using
an SSB -1 with up to three
Turn RECEIVER switch
Turn CARRIER switch
LOCAL
TO
ANTENNA
R E
.--
SS8-I
01
c;>z
RECEIVER
ILREMOT!
3 c;>
- -
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L-
R�M_9T�
IV
OPERATION
I N D I C A
channel.
®to PHONE position.
to LOCAL position.
to HANDSET position.
Study this in
for low-level background noise.
T E L E -
the handset
While speaking into the microphone, adjust
the TRANSMITTER GAIN control@to obtain
intermittent flashing of the PEAK MODU
LATION INDICATOR lamp.
most effective modulation, the adjustment
should be such that the PEAK MODULATION
INDICATOR lamp flashes once or twice on
(D
on.
every word spoken at normal voice levels.
@
on.
While receiving the distant station, adjust
©
on.
the SPEECH CLARIFIER control
natural sounding voice .
�·
@
to OUT.
subparagraph a above.
operation. When transmitting press the push
to-talk switch on the handset and speak into
the
switch.
®
to SPEAKER.
then be heard on the speaker.
transmission will take place for some time,
�0 � _.-::: :=: :: :: ::-
the TRANSMITTER switch may be turned
off!
a
warm-up period of 30 seconds is re
quired.
�· Operation from Remote Site.
perform the preliminary steps of subpara
graph a. above.
-�
LOCAL-REMOTE switch\9) to the number of
the extension to be used.
18-381
will light indicating at remote location that
2
3
(5)
Set CHANNEL selector©to desired
(6)
Turn TELEGRAPH-PHONE switch
(7)
Set LOCAL-REMOTE selector @
(8)
Set SPEAKER-HANDSET switch
(9)
Lift the handset from its holder.
(10) Adjust RECEIVER GAIN control
(11) Press the push -to -talk switch on
and
call the distant station.
Operation at Equipment Site.
(1) Perform the preliminary steps of
(2)
The equipment is now ready for full
microphone.
To
listen,
(3) To monitor the circuit turn switch
Any incoming signal will
(4)
If it is anticipated that no local
When the transmitter is re-energized
( 1) Operator at equipment site must
(2)
On the power s � ply chassis, turn
(3) The lamp on the extension desk set
®
@
To obtain the
@
for most
release the
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