OPEK CX5 - 3-Position Coaxial Antenna Switch Box for Radio Systems

OPEK CX5 - 3-Position Coaxial Antenna Switch Box for Radio Systems

Product Overview

The OPEK CX5 is a professional-grade 3-position coaxial antenna switch box enabling one radio to connect to three separate antennas or three radios to share one antenna. This versatile switching device utilizes SO239 coaxial connectors with 1 input and 3 output configuration, providing manual switching between antenna paths without requiring disconnection and reconnection of coaxial cables. Constructed for reliable signal switching with robust switch box housing, the CX5 enables operators to select between different antenna types, locations, or heights based on communication requirements. The mechanical switching mechanism provides positive position selection and maintains the selected antenna connection without requiring electrical power. Ideal for mobile installations requiring multiple antenna options, base stations with primary and backup antennas, marine vessels with multiple antenna locations, and radio enthusiasts operating different antenna configurations requiring quick selection capability for varying operational conditions.

Key Features

3-Position Switching Capability - Manual rotary switch enables selection between three antenna outputs from single radio input or selection between three radio inputs to single antenna output, providing versatile configuration options for complex communication systems.

SO239 Coaxial Connectors - Standard SO239 female connectors (1 input, 3 outputs) provide universal compatibility with PL259 male coaxial cable connectors used throughout amateur radio, CB, marine VHF, and commercial communication systems.

Robust Switch Box Housing - Durable switch box construction protects switching mechanism from dust, moisture, and physical damage, providing long-term reliability in mobile vehicle, marine, and base station installations.

Manual Mechanical Switching - Reliable mechanical rotary switch mechanism provides positive tactile feedback and maintains selected position without requiring electrical power, eliminating failure points associated with electronic switching systems.

Minimal Signal Loss - Professional-grade construction maintains signal integrity during switching with low insertion loss, ensuring maximum power transfer to selected antenna without significant performance degradation.

Versatile Installation Applications - Compact switch box housing enables installation in mobile vehicles, base station equipment areas, marine vessels, or portable field operations, providing three-position antenna selection wherever communication systems operate.

Technical Specifications

Electrical Specifications:

• Connector Type: SO239 Female
• Configuration: 1 Input / 3 Outputs
• Switch Type: Manual Mechanical Rotary
• Impedance: 50 Ohm

Physical Specifications:

• Connector Positions: 4 Total (1 In, 3 Out)
• Housing: Switch Box Enclosure

Application:

• Mobile Vehicle Multi-Antenna Systems
• Base Station Antenna Selection
• Marine Multiple Antenna Locations
• Amateur Radio Operations
• Backup Antenna Systems
• Commercial Radio Applications

Installation Notes

The OPEK CX5 antenna switch box mounts in a convenient location accessible to the radio operator for manual switching. For mobile installations, mount the switch box within reach of the driver or front passenger area using appropriate mounting hardware. Connect the radio's coaxial cable to the single input SO239 connector using a PL259 male connector. Connect the three antenna coaxial cables to the three output SO239 connectors. Ensure all PL259 connectors are tightened hand-tight to maintain proper electrical contact. Label each output position on the switch box to identify which antenna connects to each position (for example: Position 1, Position 2, Position 3 with antenna descriptions). Test all three antenna positions after installation to verify proper operation and signal quality on each antenna. Secure the switch box housing to prevent movement during vehicle operation or equipment use. The mechanical rotary switch requires no electrical power connection. When switching between antennas, rotate the switch to the desired position and briefly key-up the radio on low power to verify the newly selected antenna is functioning before transmitting at full power.

Frequently Asked Questions

What is the difference between the CX5 and other OPEK antenna switches?

The CX5 features switch box housing providing robust protection for the switching mechanism compared to open-frame switch designs. The switch box enclosure protects internal components from dust, moisture, and physical damage, making it particularly suitable for harsh mobile, marine, and industrial environments requiring durable construction.

Can I use this switch with CB radios?

Yes, the CX5 utilizes standard SO239 connectors with 50-ohm impedance compatible with CB radio systems. The switch accommodates Australian UHF CB frequencies and standard PL259 coaxial connectors used throughout CB radio installations, making it ideal for CB systems requiring multiple antenna options.

How do I know which position connects to which antenna?

The switch box housing typically includes position markings (1, 2, 3) on the rotary switch dial. Label each position with your antenna descriptions using permanent marker or adhesive labels on the switch box housing. Test each position after installation to confirm which physical switch position corresponds to each antenna connection.

Can I switch antennas while transmitting?

No, never switch antenna positions while transmitting. Always return to receive mode before rotating the switch to a different antenna position. Switching during transmission can create momentary open circuits causing high SWR that may damage radio transmitter finals. Brief the radio on low power after switching to verify the new antenna is functioning.

Does this switch work for marine radio installations?

Yes, the CX5 is suitable for marine radio installations. The switch box housing provides better protection against marine environmental conditions compared to open-frame switches. Use the CX5 to select between bow, stern, and masthead antennas or between primary and backup antenna systems on vessels. Ensure the switch box is mounted in a protected location away from direct saltwater spray.