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R
Telex TELEX COMMUNICATIONS, INC. 12000 Portland Ave. South, Burnsville, MN 55337
UAD4
CAT. NO. 301614100 600-780 MHz
CAT. NO. 301614101 780-900 MHz
Instruction Sheet
AMPLIFIED UHF
ANTENNA SPLITTER
PN 804036 Rev A
General Description
It also features a high degree of output isolation;
The UAD4 Amplified Antenna Splitter makes it
a necessity in multi-frequency systems to prevent
possible to operate four UHF wireless diversity
intermodulation.
microphone receivers on four separate frequen-
cies u
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System Configuration Figure 2 illustrates the typical system configura- SPECIAL NOTE: In any system, unused split- ter outputs should be terminated with a 50 ohm tion using the UAD4. “dummy load”. See the accessories listing at the Figure 3 illustrates an arrangement where two end of this manual. splitters have been cascaded. By connecting one of the outputs of the first splitter to the antenna inputs of the second splitter, three additional re- ceivers may be driven by a single pair of anten- n
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90-260 VAC 50-60 Hz OUTPUT A OUTPUT B POWER OUT INPUT A INPUT B 12 3 4 12 3 4 12 3 4 15 VDC POWER RECEIVER 1 RECEIVER 2 RECEIVER 3 RECEIVER 4 Figure 2 System Configuration ANTENNA ANTENNA 90-260 VAC 50-60 Hz OUTPUT A OUTPUT B POWER OUT INPUT A INPUT B 3 3 12 4 12 4 3 12 4 15 VDC POWER TO RECEIVERS ONLY TO RECEIVERS OR SPLITTERS 90-260 VAC 50-60 Hz OUTPUT A OUTPUT B POWER OUT INPUT A INPUT B 12 3 4 12 3 4 12 3 4 15 VDC POWER TO RECEIVERS ONLY (DO NOT FEED SPLITTERS FROM SECONDARY UNITS) Figure 3
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Antenna Requirements The UAD4 may be used with a variety of anten- Good results may be obtained with optional nas. For best results, use a pair of ALP-450 di- CLAor FA-500 1/2 wave antennas. rectional log periodic antennas. See Figure 4. The ALP-450 offers the best performance and The 1/4-wave antennas that are supplied with broadest bandwidth available. the Telex wireless systems will provide adequate performance in some situations. The 1/4-wave antennas should be oriented as shown in Figure 5.
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Antenna Placement for Optimum Range Rack Mounted Antenna Connectors Antenna cable connections may be made to the and Rack Mounting front of the rack mounted UAD4 by installing For maximum range and when rack mounting, the adaptor cables supplied. Proceed as follows: the antennas must be remotely located. Remove the plug “knock outs” from the The ALP-450 comes complete with a variety of front panel. See Figure 6. mounting hardware and 10 feet (3 meters) of low loss coaxial cable. A combination
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CAUTION: Do not attach antennas and splitters 12 Volt Power On "Antenna In" Jacks with a DC short circuit to the antenna in jacks To power UAA-500 in-line antenna amplifiers, when the power is turned on. Damage could re- 12 volt power is available on the center pin of sult to the splitter or other devices. the antenna in jacks. This power is disabled when the UAD4 leaves the factory but may be The following antennas and accessories may be turned on by the installer. used with power on: FA-1, CLA
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UAD4 Accessories and Replacement Parts AC Power Cables R 550024000 Europe T elex ALP-450 THIS END TOWARD TRANSMITTER 550024002 U.K. 550024013 North America 690513 Japan TP-2 50 OHM/TNC dummy load ALP-450 (For unused outputs on the UAD-4) 450-900 MHz Log Periodic Antenna Part No. 650095 Includes mounting hardware and 10 feet (3 me- ter) coaxial cable with TNC connectors Order No. 71147000 UAD4 Cables Model Type Part No. CXU-2 2 Ft. Coaxial Cable 691459 PC-1 2 Ft. Power 690396 CXU-1 1 Ft. Coaxial
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PRINTED IN U.S.A. Copyright© 2004 by Telex TELEX COMMUNICATIONS, INC. All rights reserved July 2004
