The Daiwa CS-401 4-way coaxial switch is a commercial-grade, high-isolation radio frequency routing component engineered to manage multi-antenna distributions within professional radio base stations and advanced laboratory environments. Utilizing an ultra-low-loss manual rotary selector matrix, this heavy-duty hardware platform allows operators to comfortably route a single mainline input transceiver across 4 independent antenna outputs. It serves as an essential logistics procurement component for municipal emergency dispatch hubs, tactical telecommunication shelters, commercial communication rooms, and high-volume B2B radiocommunication accessory wholesale networks looking to secure premium coaxial routing assets.
The precise mechanical build of the CS-401 provides outstanding electrical integrity across a wide frequency range stretching up to 500 MHz, delivering total operational coverage across the HF, VHF, and UHF bands. Built to safely withstand legal-limit transmission output from high-power linear amplifiers without internal arcing or structural heating, the switch claims a massive **maximum power rating of 2.5 kW (PEP) or 1 kW (CW)** continuous duty. To preserve weak signals and ensure total protection against downstream co-channel interference, the internal cavity layout delivers an unyielding **isolation index of ≥ 60 dB at 200 MHz**, while ensuring highly efficient energy transmission with a negligible **insertion loss of ≤ 0.2 dB**.
Housed inside a ruggedized, fully shielded industrial metal cavity enclosure, this high-performance antenna switch routes signals along a uniform 50 Ω characteristic impedance path, keeping system variance at an absolute minimum with a **Voltage Standing Wave Ratio (SWR) of ≤ 1.2:1**. The rear interface is populated entirely with premium heavy-duty SO-239 PL Female connectors (1x Input path, 4x Output paths) designed to mate smoothly with heavy-gauge PL-259 male plugs. Delivered as a comprehensive, shelf-ready solution, the package completely **includes all necessary mounting hardware** for secure anchoring to workshop benches, control consoles, or equipment racks, guaranteeing immediate technical system alignment and absolute multi-shift field readiness.
| Technical Specification Parameter | Specifications |
|---|---|
| Product Brand Designation | Daiwa Industry Co., Ltd. (Original Factory Infrastructure Line) |
| Hardware Model Designation | CS-401 / CS401 (Professional 4-Position Coaxial Series) |
| Primary Component Classification | Manual Rotary 4-Position RF Coaxial Antenna Switch |
| Operational Frequencies Scope | DC up to 500 MHz Continuous Range (HF / VHF / UHF Matrix) |
| Maximum Load Power Capacity (PEP) | 2.5 Kilowatts (2500W PEP) Peak Envelope Power Threshold |
| Maximum Load Power Capacity (CW) | 1.0 Kilowatt (1000W CW) Continuous Wave Service Rating |
| Port-to-Port Isolation Index | ≥ 60 dB at 200 MHz High-Separation Barrier |
| System Insertion Loss Profile | ≤ 0.2 dB Ultra-Low Core Attenuation Path |
| Voltage Standing Wave Ratio | SWR ≤ 1.2:1 Target Line Impedance Convergence |
| System Characteristic Impedance | 50 Ohms Nominal Standard Optimization |
| Primary RF Input Connector | 1x PL-259 Matched Interface (SO-239 UHF Female Chassis Jack) |
| Primary RF Output Connectors | 4x SO-239 UHF Female Heavy-Duty Dispatched Sockets |
| Installation Framework Addition | Turnkey Structural Mounting Hardware Plates & Screws Included |
| Verified Hardware Compatibility Scope | HF/VHF/UHF mobile base transceivers, high-output linear amplifiers, 50-ohm PL-259 patch leads, lightning protectors, and diverse antenna array systems |
| Primary Fleet Utility Purpose | Turnkey multi-antenna station distribution, streamlined bench cabling layout, manual matrix input shifting, and active terminal cross-feed signal protection |
