Ill
INSTALLATION
1. LOCATION AND
MOUNTING.
The Type SSB-1 communication equipment
may be mounted on a desk or a table top,
(figure 1) or at any site affording a mounting
area of 22-3/8 in. wide by 18-3/4 in, deep.
A minimum clearance of 12-1/2 inches is
required at the top of the cabinet to permit
the raising of the cabinet top panel; a mini
mum clearance of 6 inches is required at
the rear of the cabinet to permit antenna
and ground connections or 19-3/4 inches if
the rear door is to be opened without mov
ing the equipment.
Figure 7 shows the
outline dimensions of the equipment.
2. A N TE N N A.
Satisfactory operation is largely dependent
on the proper choice and erection of an
antenna. A single-wire end-fed antenna that
does not exceed 1/4 wave length at the highest
channel frequency should be used. The length
is measured from the antenna binding post,
accessible through the rear door of the cabi
net, to the far end of the wire and includes
the lead-in wire to the antenna. The follow
ing chart and figure 23 show the length of
antenna required at an installation for the
highest transmitted frequency used.
Highest Transmitted
Frequency
(megacycles)
3
4
5
6
7
8
9
10
11
12
13
14
15
Length of Antenna
(feet)
78.0
58.5
46.8
39.0
33.4
29.3
26.0
23.4
21.3
19.5
18.0
16.7
15.6
15
As an example: for 14,250 kc carrier the
length of antenna would be approximately
16.4 feet. If difficulty is experienced in load
ing the antenna on the highest frequency
channel, the antenna should be shortened
slightly 1 or 2 feet at a time, until proper
loading is obtained.
3. G R 0 U N D C 0 N N E C T I 0 N.
The SSB-1 should be grounded with as
heavy a ground strap as possible. Connect
the strap from the ground terminal at the
rear of the transmitter-receiver chassis to
a water pipe or any other good ground con
nection. Use as short a strap as possible.
Too long a strap may require a shortening
of the antenna to make it resonate on all
channels.
4. P 0 W E R S 0 U R C E.
Primary power for the SSB-1 may be
either 115v or 230v ac, single phase, 50 to
60 cycles. Internal connections at TB101,
located on the bottom side of the power
supply chassis, must be checked to ensure
proper transformer connections for the power
source employed. Use rubber covered two
conductor cable, No. 14 AWG or larger.
Connections are listed below and shown in
figure 28.
Power Source
115v ac, 50/60 cps
230v ac, 50/60 cps
Line Connections at
Terminal Board
TB101
Terminals 1 and 2
Terminals 3 and 4
5. R E M 0 T E T E L E P H 0 N
E
C 0 N N E C T I 0 N S.
Connections for up to three remote tele
phones are provided at terminal board TB
103 on the power supply chassis. Connect
Summary of Contents for SSB-1
Page 1: ...t z LA I E a I I Cl LA I I z z C cc t LA I cc c en U z I LA I 0 IE en CD IE z Cl C U c ...
Page 4: ... ...
Page 32: ... a c CD c a 00 CD n 0 1 CD 1 CD a ...
Page 42: ...z 0 1 3 t r l r n ...
Page 44: ...R i5 Rl23 Cl22 T R114 c Figure 17 Power Supply Bottom View 40 116 rs as6 I J I I I I ...
Page 45: ... f f c t f c f f f t f f c c c t c f c f f f Figure 18 Speech Clipper Internal View 41 ...
Page 46: ...5 5 01 FRONT SOTTOM COVER OPEN 18 1 8 Figure 19 Remote Desk Set 42 I I I I I I J ...
Page 77: ......
Page 78: ......
Page 79: ......