®
TELEX COMMUNICATIONS, INC. 12000 Portland Ave. South, Burnsville, MN 55337
Telex
SC-600
Instruction Sheet
CAT. NO. 71197000
AMPLIFIED BROADBAND UHF
ANTENNA SPLITTER-COMBINER
PN 801547
General Description
It also features a high degree of output isolation;
a necessity in multi-frequency systems to pre-
vent intermodulation
The SC-600 Amplified Broadband Split-
ter-Combiner makes it possible to operate eight
UHF wireless intercom transceivers using only
two antennas.
DO NOT attempt to install and/or turn on the
power to the SC-600 until you have read com-
pletely and understood this manual.
SPECIFICATIONS
Frequency Range ....................................................................................................520-760 MHz
Antenna Connectors...........................................................................Standard TNC Receptacles
AC Power Input........................................................................110\220 VAC 50\60Hz, 130 VA
DC Power Output: ..................................................................................................15 VDC 1.3A
Size (Approximate)...............H: 3.50" (88.9mm), W: 17.00" (431.8mm) D: 12.50" (317.5mm)
Weight: (Approximate).......................................................................................................15 lbs.
Antenna Splitter
3rd Order Intercept Output:.........................................................................Greater than 28 dBm
Net Gain............................................................................................................Greater than 2 dB
Noise Figure..........................................................................................................Less than 4 dB
Output Isolation..............................................................................................Greater than 20 dB
Antenna Combiner
Net Gain.................................................................................................................................0 dB
Noise Figure.................................................................................................................10 dB Typ
3rd Order Intermodulation .........................................................................-55 dbm @ + 13 dbm
Input, Each Transmitter
SC-600 Product Features:
· Ideal compliment to your BTR-600/BTR-500 UHF Wireless Intercom System
· Standard IEC 320 Power Input Connector
· Power Output for up to eight transceivers help make your whole system easier
to handle
· High-quality TNC Connectors ensure consistent impedance across the entire
frequency range
· Rack Mount Brackets included for 19" (482.6mm) rack
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RECEIVE
ANTENNA
TRANSMIT
ANTENNA
DC
OUTPUT
RECEIVE
TRANSMIT
TRANSMIT
ANTENNA
RECEIVE
ANTENNA
110/220 VAC INPUT
FUSE: F 1.5A 250V
TRANSMIT
RECEIVE
TRANSMIT
RECEIVE
POWER
POWER
TRANSMIT 2
TRANSMIT 1
TRANSMIT
TRANSMIT
TRANSMIT
RECEIVE
TRANSMIT
TRANSMIT
TRANSMIT
RECEIVE
POWER
POWER
TRANSMIT 4
TRANSMIT 3
RECEIVE
RECEIVE
POWER
POWER
TRANSMIT 6
TRANSMIT 5
RECEIVE
RECEIVE
POWER
POWER
TRANSMIT 8
TRANSMIT 7
Figure 2
System Configuration
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Antenna Requirements
Good results may be obtained with 1/2 wave an-
tennas (See Figure 5). All antennas are sold sep-
arately.
The SC-600 may be used with a variety of an-
tennas. For best results, use a pair of ALP-450
directional log periodic antennas (See Figure 3)
or, the ALP-600 Bi-directional log periodic an-
tenna (See Figure 4).
When using 1/2 wave antennas, we recommend
using the higher frequency model when the re-
ceivers operate in more than one band. If the re-
ceivers are more than one band apart, such as
yellow and white, we strongly recommend using
the ALP-450, or ALP-600 depending on the ap-
plication.
R
ex
el
T
ALP-450
THIS END TOWARD TRANSMITTER
Telex
Figure 5
1/2 Wave Antenna
Figure 4
ALP-600
Figure 3
ALP-450
1/2 Wave Antenna Placement
If 1/2 wave antennas are mounted directly to the
SC-600, they should be configured as shown in
Figure 6.
Do not rack mount the SC-600 in this config-
uration. Serious loss of range and perfor-
mance may occur.
Place the SC-600 with antennas in a location
that is in direct view of the transmitters for best
results.
DC
OUTPUT
RECEIVE
TRANSMIT
TRANSMIT
ANTENNA
RECEIVE
ANTENNA
110/220 VAC INPUT
FUSE:
F
1.5A 250V
Figure 6
1/2 Wave Antenna Mounting
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Antenna Placement
Rack Mounting
for Optimum Range and Rack Mounting
NOTE: The SC-600 should always be
mounted on the bottom of the rack to fully
support the chassis. Failure to do this may re-
sult in damage to the SC-600.
For maximum range and when rack mounting,
the antennas must be remotely located.
The ALP-450 and ALP-600 antennas come com-
plete with a variety of mounting hardware and
10 feet (3 meters) of low loss coaxial cable. A
combination mounting bracket with 10 feet of
coaxial cable is available for the 1/2 wave an-
tenna (Model No. AB-2).
Rack mount brackets are supplied with the
SC-600. To attach the brackets, proceed as fol-
lows:
Antennas should be placed in a location with a
clear “signal path” to the transmitter. This
“path” should be as short and free of obstruc-
tions as possible. Obstructions, such as walls
ceilings, and metal objects, will reduce range
and performance.
· Align the rack bracket with the holes on
the side of the unit. See Figure 7.
· Install flat head machine screws in two
holes. Tighten securely. Repeat on the
other side of the unit. For best alignment,
perform the above steps while the unit and
rack brackets are setting on a flat surface.
· Insert the unit into a 19" rack enclosure
and insert four #10-32 x 3/8" Phillips pan
head screws (supplied) in each corner of
the rack mount brackets and secure.
Coax Cable
For best results, it is recommended that cable
losses be kept under 4 dB. (Every 3 dB of signal
loss results in a system operating distance reduc-
tion of 25%.
See the accessories section of this manual for
special low loss cable assemblies.
Figure 7
Rack Mounting
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SC-600 Accessories and Replacement Parts
R
ex
el
T
ALP-450
Telex
THIS END TOWARD TRANSMITTER
ALP-450
ALP-600
450-900 MHz Log Periodic Antenna
Includes mounting hardware and 10 feet (3 me-
ter) coaxial cable with TNC connectors
Order No. 71147000
520-760 MHz Bi-Directional log periodic antenna
Includes mounting hardware and 10 feet (3 me-
ter) coaxial cable with TNC connectors
Order No. 878896
1/2 wave Antenna
Special low loss antenna cables with
TNC connectors
Model
Length
Order No.
CXU-10 10 Ft. (3 meter)
690419
CXU-25 25 Ft. (7.6 meter) 71151-025
CXU-50 50 Ft. (15 meter) 71151-050
CXU-75 75 Ft. (23 meter) 71151-075
CXU-100 100 Ft.(30 meter) 71151-100
Model No. Part No. Band Color
Frequency
CLA-1
CLA-2
CLA-3
CLA-4
CLA-5
CLA-6
870658-1
870658-2
870658-3
870658-4
870658-5
870658-6
Blue
Yellow
Red
White
Green
Orange
520-564.9 MHz
565-614.9 MHz
615-659.9 MHz
660-689.9 MHz
690-724.9 MHz
725-760 MHz
TP-2 50 OHM/TNC dummy load
(For unused outputs)
Part No. 650095
IEC 320 Cordsets
Type
Part No.
230V 50 Hz (Euro)
230V 50 Hz (U.K.)
120V 60 Hz (U.S.)
58349008
550024004
8800102668
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Telex
Antenna Bracket Kit
Aluminum Brackets with vertical or horizontal
mounting capability
Order No. 878898
Antenna Mast
Four section, clear anodized aluminum mast
with extended length of 90 1/4"
Order No. 878897-1
(Antenna not included)
PRINTED IN U.S.A.
Copyright© 2001 by Telex
TELEX COMMUNICATIONS, INC.
All rights reserved
NOV 2001
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