1300 000 734

MiniSystem Combiner, 138-148MHz, 4 Channel, 50 Watt, Single Antenna Operation, Preamplifier fitted


The MiniSystem Combiner (MSC) is an innovative solution that simplifies the design, quotation, procurement and installation of RF combining for applications requiring 1-4 RF channels. Catering for most standard frequency sub-bands, channel spacings and Tx-Rx frequency separations, MSCs are compatible for use with analogue and digital technologies in a wide range of two-way radio, telemetry, linking and other wireless network applications. The MSC is available in VHF, UHF and 800MHz frequency ranges.

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MS1314-0405-SP Features:

The MiniSystem Combiner (MSC) comprises a transmitter combiner using dual-stage isolators and innovative hybrid combining techniques to provide excellent Tx-Tx isolation and to minimise intermodulation (IM). An integral receive multicoupler uses a low-noise preamplifier featuring user-selectable gain and excellent 3OIP performance to ensure optimum system receive sensitivity is available.

High quality bandpass filtering provides Rx preselectivity and Tx-Rx system isolation performance. Form-C relay alarm outputs provide alarm notification of DC power or Rx LNA amplifier failure.

• 4 channel capacity
• 50W Tx input power (per channel)
• 100% Tx Duty Cycle
• Open-circuit antenna port VSWR protection
• Low-noise receiver preamplifier (LNA)
• User-selectable Rx gain
• DC power and Rx LNA Fail alarm monitoring
• Compact 19in rack mounting
Frequency Range 138-148 MHz
Tx Channel Capacity 4
Tx Input power per channel ≤ 50W per channel
Tx Duty Cycle ≤ 100% per channel
Tx-Tx Bandwidth 1.0MHz
Tx Insertion Loss (typical) 9dB typ.
Tx-Tx Isolation dB > 60dB
Tx-Ant Isolation > 50dB
IP Rating Indoor Use Only
RF Connectors Tx = N (female) Rx = BNC (female)
Tx-Rx Isolation 65dB min. (70dB typ.)
Tx Input Return Loss 20dB typ.
Tx-Rx Separation 4MHz min.
Rx Channel Capacity 4
Rx-Rx Bandwidth 1.2MHz
Rx System Gain 0dB to 30dB (in 1dB steps)
Rx LNA Noise Figure < 2dB (1.2dB typ.)
Rx Maximum Input Level -10dBm
Rx-Rx Isolation > 18dB
Rx Output Return Loss > 20dB
Alarms DC Supply Voltage Low, Rx LNA Fail
Alarm Outputs Dry Relay Form-C (N.C./N.O./CMN)
Enclosure 3RU 19in Rack Mount (Black)
DC Power Requirements +11VDC to +28VDC 3.5W typ. (polarity protected)
Impedance 50 ohms (all RF ports)
DC Connector 2pin 5mm Phoenix (mating plug supplied)
Alarm Connector 3pin 5mm Phoenix (mating plug supplied)
Temperature Range - 30 C to 60° C / - 22° F to 140° F

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