VHF 4 Ch, Single Tx/Rx Antenna, 50W Tx, +11-28VDC Rx LNA, 3RU
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.
The MSC Tx combiner uses dual stage isolators and hybrid combining techniques to provide Tx-Tx isolation and to minimise intermodulation (IM) impacts. The Rx system uses an ultra low noise preamplifier with user-selectable gain and excellent 3OIP performance, with a multi-way output divider to ensure optimum system receive sensitivity is available. Integral high quality bandpass filtering provides high Rx selectivity and Tx-Rx system isolation performance. Form-C relay outputs provide alarm notification of DC power or Rx LNA amplifier failure. The MSC is available in sub-bands covering VHF, UHF and 800MHz frequency ranges.
Features:
- 4 channel capacity
- 50W Tx input power (per channel)
- 100% Tx Duty Cycle
- Open-circuit antenna port VSWR protection
- Ultra low noise receiver preamplifier
- User-selectable Rx gain
- DC power and Rx LNA Fail alarm monitoring
- Compact 19in rack mounting
| Frequency Range (MHz) | 132-174 |
| Tx Channel Capacity | 4 |
| Tx Input Power | ≤ 50W per channel |
| Tx Duty Cycle | ≤ 100% per channel |
| Tx-Tx Bandwidth | 1.0MHz |
| Tx Insertion Loss | 9dB typ. |
| Tx-Tx Isolation | > 60dB |
| Tx-Ant Isolation | > 50dB |
| 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 | 1.0MHz |
| 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 |
| Impedance | 50 ohms (all RF ports) |
| Alarms | DC Supply Voltage Low, Rx LNA Fail |
| Alarm Outputs | Dry Relay Form-C (N.C./N.O./CMN) |
| RF Connectors | Tx = N (female) Rx = BNC (female) |
| DC Connector | 2pin 5mm Phoenix (mating plug supplied) |
| Alarm Connector | 3pin 5mm Phoenix (mating plug supplied) |
| Enclosure | 3RU 4RU 19in Rack Mount (Black) |
| DC Power Requirements | 11VDC to 28VDC 3.5W typ. (polarity protected) |
| IP Rating | Indoor Use Only |
| Temperature Range | – 30 C to 60° C / – 22° F to 140° F |
| Dimensions (HxWxD) | 313x483x430mm (12.33x19x17in) |
| Weight | 22.5Kg (49.5lbs) |
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| Shipping Weight (lbs.) | 45 |
| Shipping Dims (inches) | 24x24x12 |