ETL Systems 22253 VSAT TX-RX Hybrid Unit with LNB Power
The VSAT Unit 22253 is being phased out and superceded by 22433 VSAT Unit. Please contact us for a detailed quote and availability of either 22253 inventory or 22433.
Model Number: 22253-F7F7-E but is superseded by 22433
22253 VSAT Unit LNB/BUC Power & 10MHz Source
The VSAT Unit 22253 is being phased out and superceded by 22433 VSAT Unit. Please contact us for a detailed quote and availability of either 22253 inventory or 22433.
The VSAT TX-RX module is an Lband hybrid splitter and combiner shelf designed to power and reference VSAT terminals, as well as facilitate the use of multiple modems.
Integrated Power Supply
The receive section comprises of a 4-way splitter and provides 18V DC LNB power. The transmit section comprises of a 4-way combiner and provides 24 or 48V DC BUC power. Both sections have a selectable amplifier and provide a 10MHz reference signal via the common port. An optional Ethernet port & web browser interface are
also available.
RF Interface
A DIL switch on the rear panel is used to select the BUC voltage and also the internal or external 10 MHz reference source. The shelf incorporates monitoring of LNB and BUC current, as well as 10MHz signal presence. Alarms are triggered if LNB or BUC power, 10MHz signal, or PSU’s fail. Alarms are indicated via the front panel LED’s and also remotely via a serial port. The shelf is housed in a 1U high rack with a single mains inlet (there are 3 internal power supplies), and has 75 ohm F-type RF connectors. Other connectors and impedances are also available.
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RX SIDE |
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Capacity |
4-way Splitter |
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Frequency Range |
850-2150 MHz (L-band) |
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Insertion Gain |
Passive Active |
-10 dB ± 1 dB 3 dB ± 1 dB |
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Flatness over 850-2150MHz |
Passive Active |
± 2 dB ± 1 dB Slope compensating amplifier |
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1dB Compression |
+ 10 dBm +8 dBm minimum |
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Noise Figure |
14 dB |
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Input Return Loss |
12 dB typical |
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Output Return Loss |
12 dB typical |
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10MHz Tone |
Always supplied via common (RF in) port |
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TX SIDE |
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Capacity |
4-way Combiner |
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Frequency Range |
850-2150 MHz (L-band) |
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Insertion Gain |
Passive Active |
-10 dB ± 1 dB 3 dB ± 1 dB |
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Flatness |
Passive Active |
± 2 dB ± 1.25 dB Slope compensating amplifier |
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1dB Compression |
+ 15 dBm +12 dBm minimum |
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Noise Figure |
19 dB |
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Input Return Loss |
12 dB typical |
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Output Return Loss |
12 dB typical |
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10MHz Tone |
Always supplied via common (RF out) port |
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Designed to power and reference VSAT terminals, as well as facilitate the use of multiple modems.
