Description
The Microlab CK-56N is a professional-grade 6 dB RF Directional Coupler designed for distributed antenna systems (DAS), cellular networks, and telecommunications RF signal distribution applications. Operating across 694–2700 MHz, this 50 Ohm directional coupler provides nominal 6 dB coupling with a maximum average power rating of 50W. Its compact aluminum construction and N-Female RF connectors make it suitable for indoor wireless infrastructure requiring reliable and controlled RF signal distribution.
The CK-56N is part of Microlab's CK-50N series of wideband directional couplers, utilizing a multisection quarter-wave microstrip design to provide stable coupling across multiple cellular frequency bands. The coupler features 6 ± 0.6 dB coupling, minimum 19 dB directivity, and input VSWR better than 1.25:1. It can also function as an unequal power divider or tapper, providing an approximate 3:1 power distribution ratio between outputs. Designed for indoor DAS and telecommunications installations, the CK-56N supports multiband antenna systems, leaky feeder networks, and cellular RF distribution applications.
Key Specifications
- Manufacturer: Microlab
- Model Number: CK-56N
- Product Family: CK-50N Series
- Product Type: RF Directional Coupler / Unequal Power Divider
- Coupling Value: 6 dB Nominal
- Coupling Tolerance: ±0.6 dB
- Operating Frequency: 694–2700 MHz
- Coupling Flatness: ±0.3 dB
- Coupled Loss: 1.25 dB (Manufacturer Specification)
- Dissipative Loss: Less than 0.6 dB
- Directivity: 19 dB Minimum
- Input VSWR: Less than 1.25:1
- Impedance: 50 Ohms
- Maximum Average Power: 50W
- Power Distribution Ratio: Approximately 3:1
- RF Connector Type: N-Female
- Number of RF Ports: 3
- Connector Finish: Triplate
- Housing Finish: Passivated Aluminum
- Operating Temperature: -20°C to +70°C (-4°F to +158°F)
- Environmental Application: Indoor
- Manufacturer Net Weight: Approximately 7.5 oz (210 g)
- Mounting: Optional Mounting Kit
- Environmental Compliance: RoHS Compliant
- Product Status: Discontinued by Manufacturer
- Condition: Used
- Quantity: 1 Directional Coupler
Typical Applications
- Distributed Antenna Systems (DAS)
- 4G LTE cellular network infrastructure
- Indoor cellular signal distribution
- RF signal tapping and unequal power splitting
- Multiband wireless antenna installations
- Commercial building wireless coverage systems
- Hotels, hospitals, and educational facilities
- Stadiums, arenas, and convention centers
- Industrial and manufacturing facilities
- Leaky feeder cable distribution systems
- Telecommunications base station infrastructure
- Indoor wireless network expansion and maintenance
- Replacement of existing Microlab directional couplers
Please Note: The Microlab CK-56N is a 6 dB directional coupler with N-Female RF connectors, designed for indoor telecommunications applications. The manufacturer specifies an operating frequency range of 694–2700 MHz, although some unit labels indicate 698–2700 MHz. This model was discontinued by Microlab in June 2024 and replaced by the CC-EP-6-738FN. Please verify the required frequency range, connector configuration, power handling, and equipment compatibility before ordering.
Condition: These are used RF directional couplers and may show normal signs of previous installation, handling, and use. The units are offered in their existing condition.
