Daiwa CS-201A (Coax Switch)
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| Frequency | 0 - 600 MHz |
| TX power | 2500 W (Power handling 2.5 kW PEP / 1 kW CW. The power_w lists the 2.5 kW PEP figure.) |
| Modes | n/a |
| antenna ports | Two SO-239 antenna ports plus a common SO-239 to the station (a CS-201GII variant uses N connectors). |
| ground | Auto-grounds the unused antenna terminal for static protection. |
| power req | None - a passive manual switch. |
A superb-value two-way switch: the die-cast cavity construction gives genuinely excellent numbers - VSWR under 1.12:1, loss under 0.2 dB and 60 dB isolation to 600 MHz - with high 2.5 kW PEP power handling that suits an amplified HF station. It auto-grounds the unused antenna for static protection, and it works cleanly from HF through UHF.
It is a two-position switch only (for more antennas you need a 4-way), it provides static grounding but not gas-tube lightning suppression like the Alpha Delta, and it is a manual desk/wall switch rather than a remote/relay type. The base SO-239 model is fine for HF/VHF but use the N-connector GII for best UHF.
The Daiwa CS-201A is an outstanding-value two-position coax switch - excellent low loss and isolation to 600 MHz, 2.5 kW PEP handling and auto-grounding, all for very little money. The default pick when you just need to switch between two antennas or two rigs.
The Daiwa CS-201A is a two-position antenna coax switch that punches far above its modest price. Its body is a die-cast 'cavity' made from a special alloy, and that careful construction yields genuinely excellent RF numbers: VSWR stays below 1.12:1, insertion loss under 0.2 dB, and port isolation reaches 60 dB at 600 MHz, so it performs cleanly from HF right through UHF. Power handling is a healthy 2.5 kW PEP (1 kW CW), enough for an amplified HF station.
It lets you flip one common station port between two antennas (or share one antenna between two radios), and it automatically grounds whichever antenna is not selected, which helps bleed off static charge. Connections are SO-239; for the best UHF performance Daiwa offers the CS-201GII with N connectors.
What it is not: a four-way switch (step up if you need more antennas), and it provides static grounding rather than the gas-tube lightning suppression of a switch like the Alpha Delta DELTA-4B. It is also a manual switch, not a coax-controlled remote type. For simply and cleanly switching between two antennas or two rigs, though, it is hard to beat for the money. Compare it with the four-position Alpha Delta DELTA-4B and the remote Ameritron RCS-4.