The Daiwa CS-401 is a professional-grade, heavy-duty 4-way coaxial antenna switch engineered for high-performance RF distribution in demanding amateur radio shacks, commercial communication centers, and laboratory environments. Designed with outstanding cavity-type impedance matching, this premium selector switch allows radio operators to route a single transceiver safely and efficiently to up to four separate antenna systems, or conversely, connect up to four independent receivers to a single antenna array. Its robust mechanical framework provides smooth, positive-locking rotary selection to prevent accidental misalignment.
Engineered to support high-frequency and microwave setups, the CS-401 operates smoothly across a broad frequency range reaching up to 1300 MHz (1.3 GHz). It is equipped with premium, low-loss N-type female connectors to guarantee exceptional signal integrity, keeping insertion losses to an absolute minimum of ≤ 0.2 dB and maintaining a superb Voltage Standing Wave Ratio (VSWR) of ≤ 1.2:1. Built to handle high-power transmissions without arcing or breakdown, the switch supports an impressive maximum power capacity of up to 2.5 kW PEP (Peak Envelope Power) or 1 kW continuous-wave (CW) in the lower frequency segments.
To eliminate signal bleed-through and crosstalk between adjacent channels, the Daiwa CS-401 features advanced internal shielding that yields an isolation rating of ≥ 60 dB at 200 MHz. This ensures that inactive RF paths remain completely isolated, protecting sensitive receiver front-ends from high-power transmit signals. Housed in a rugged, cast metal enclosure designed for maximum RF shielding and long-term durability, the switch comes complete with dedicated wall-mounting hardware for a secure, professional installation directly onto your radio console, desktop, or station control board.
Key Features
- Allows seamless, low-loss switching of up to 4 antennas to a single transceiver or receiver.
- Broad operational frequency response supporting VHF, UHF, and SHF frequencies up to 1300 MHz (1.3 GHz).
- High-quality N-type female connectors ensure superb impedance matching across all ports.
- Industrial-grade power handling capable of supporting up to 2.5 kW PEP / 1 kW CW.
- Outstanding isolation rating (≥ 60 dB @ 200 MHz) to prevent RF bleed-through.
- Minimal insertion loss (≤ 0.2 dB) and SWR (≤ 1.2:1) for maximum signal throughput.
- Supplied with dedicated heavy-duty mounting hardware for secure console installation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Daiwa Industry Co., Ltd. |
| Model Designation | CS-401 |
| Product Type | 4-Position Coaxial Antenna Switch |
| Frequency Range | DC to 1300 MHz (1.3 GHz) |
| Power Handling Capacity | 2.5 kW PEP / 1 kW CW (at HF) |
| Nominal Impedance | 50 Ohms |
| Port Isolation | ≥ 60 dB (at 200 MHz) |
| Insertion Loss | ≤ 0.2 dB |
| Voltage Standing Wave Ratio (VSWR) | ≤ 1.2:1 |
| Input Connection | 1x N-Type Female |
| Output Connections | 4x N-Type Female |
| Chassis Material | Rugged Cast Metal Shell |
Package Content
- 1x Daiwa CS-401 4-Way N-Type Coaxial Switch
- 1x Complete Heavy-Duty Mounting Hardware Kit
- 1x User Reference Instructions
