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manual abstract
South, Burnsville, MN 55337 Instruction Sheet General Description The UAD4 Amplified Antenna Splitter makes it possible to operate four UHF wireless diversity microphone receivers on four separate frequencies using only two antennas. UAD4 CAT. NO. 301614100 600-780 MHz CAT. NO. 301614101 780-900 MHz AMPLIFIED UHF ANTENNA SPLITTER PN 804036 Rev A It also features a high degree of output isolation; a necessity in multi-frequency systems to prevent intermodulation. The UAD4 Splitter is compatible with Telex UHF diversity wireless receivers. SPECIFICATIONS Frequency Range 301614100 .................................................................................600-780 MHz 301614101.................................................................................780-900 MHz 3rd Order Intercept Output ...........................................................................greater than 18 dbm Net Gain ............................................................................................................greater than 2 dB Noise Figure ...........................................................................................................less than 3 dB Output Isolation...............................................................................................greater than 20 dB Connectors, Antenna..........................................................................Standard TNC receptacles Power Requirements................................................................................. 100-240VAC 50/60Hz Features The UAD4 is equipped with TNC type connectors. Low loss coaxial cables are also supplied for splitter to receiver antenna jack connections. The UAD4 has an internal power supply. Power out jacks and cables are provided to supply up to four receivers thus eliminating excess power supply clutter. Rack panel mounting “ears” allow the UAD4 to be mounted in a standard 19 inch equipment rack. “Knock outs” in the ears allow front connection of antenna cables. -1 System Configuration Figure 2 illustrates the typical system configura-SPECIAL NOTE: In any system, unused splittion using the UAD4. ter outputs should be terminated with a 50 ohm “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 receivers may be driven by a single pair of antennas. Telex UAD4 ANTENNA POWER SPLITTER Front View INPUT A OUTPUT A 1 2 3 4 OUTPUT B 1 2 3 4 INPUT B POWER 90-260 VAC 50-60 Hz POWER OUT 1 2 3 4 15 VDC Rear View Figure 1 Front and Rear View -2 -3- TO RECEIVERS ONLY TO RECEIVERS OR SPLITTERS TO RECEIVERS ONLY (DO NOT FEED SPLITTERS FROM SECONDARY UNITS) ANTENNA ANTENNA INPUT A OUTPUT A 1 2 3 4 OUTPUT B 1 2 3 4 INPUT B POWER 90-260 VAC 50-60 Hz POWER OUT 1 2 3 4 15 VDC INPUT A OUTPUT A 1 2 3 4 OUTPUT B 1 2 3 4 INPUT B POWER 90-260 VAC 50-60 Hz POWER OUT 1 2 3 4 15 VDC Figure 3 Cascading RECEIVER 1 RECEIVER 2 RECEIVER 3 RECEIVER 4 INPUT A OUTPUT A 1 2 3 4 OUTPUT B 1 2 3 4 INPUT B POWER 90-260 VAC 50-60 Hz POWER OUT 1 2 3 4 15 VDC Figure 2 System Configuration Antenna Requirements The UAD4 may be used with a variety of antennas. For best results, use a pair of ALP-450 directional log periodic antennas. See Figure 4. The ALP-450 offers the best performance and broadest bandwidth available. Good results may be obtained with optional CLA or FA-500 1/2 wave antennas. The 1/4-wave antennas that are supplied with the Telex wireless systems will provide adequate performance in some situations. The 1/4-wave antennas should be oriented as shown in Figure 5. Do not use 1/4-wave antennas for remote mounting. ALP-450THIS END TOWARD TRANSMITTER TelexR ALP-450 CLA 1/2 Wave Antenna FA-500 1/2 Wave Antenna Figure 4 Antennas Antenna Placement If antennas are mounted directly to the UAD4, Do not rack mount the UAD4 in this configuthey should be configured as shown in Figure 5. ration. Serious loss of range and performance may occur. Place the UAD4 with antennas in a location that is in direct view of the transmitters for best results. INPUT A OUTPUT A 1 2 3 4 OUTPUT B 1 2 3 4 INPUT POWER 90-260 VAC 50-60 Hz POWER OUT 1 2 3 4 15 VDC Figure 5 1/2 Wave Antenna Mounting -4 Antenna Placement for Optimum Range Rack Mounted Antenna Connectors and Rack Mounting Antenna cable connections may be made to the 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. The ALP-450 comes complete with a variety of mounting hardware and 10 feet (3 meters) of low loss coaxial cable. A combination mounting bracket (Model No. AB-2) with 10 feet of coaxial cable is available for 1/2 wave antennas. Antennas should be placed in a location with a clear “signal path” to the transmitter. This “path” should be as short and free of obstruct...