The Daiwa CN-501H is a professional-grade, high-integrity bench instrument designed to provide real-time forward power, reflected power, and SWR (Voltage Standing Wave Ratio) tracking simultaneously. Utilizing Daiwa’s signature dual cross-needle movement matrix, this meter drops the need for complex, multi-step manual calibration loops or separate selector knobs to calculate antenna efficiency. It serves as a vital diagnostic station asset for commercial radio rooms, base depots, and hardware maintenance setups that demand continuous technical system monitoring.
The internal RF sensor hardware is built to maintain stable impedance alignment across an exceptionally wide spectrum, operating continuously from 1.8 to 150 MHz. This broad passband makes the unit perfectly compatible with HF amateur radio transceivers, commercial low-band communication rigs, and 2-meter VHF base operations. With select power scales of 15 W, 150 W, and 1500 W, the meter safely monitors everything from low-power QRP handheld devices up to heavy-duty high-power linear amplifiers, rating at a maximum power capacity of 1.5 kW on HF bands and 1 kW on VHF channels.
Housed inside a rugged, RF-shielded metal enclosure measuring 155 x 80 x 100 mm, the device limits external electromagnetic interference to preserve absolute measurement accuracy. The rear panel is configured with high-retention female PL (SO-239) coaxial connector ports matched to a standard 50 Ohms line impedance. For dark workbench coordinates or night operations, the meter includes an internal 13.8V illumination path with a bundled power connection cable, ensuring clear visual data tracking at a single glance.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Brand | Daiwa |
| Model | CN-501H / CN501H |
| Meter Movement Type | Dual Cross-Needle (Simultaneous Forward, Reflected, and SWR tracking) |
| Active Frequency Range | 1.8 to 150 MHz (HF to VHF bands) |
| Selectable Power Scales | 15 W, 150 W, and 1500 W |
| Rated Power Thresholds | • 1.8 to 60 MHz: 1.5 kW Maximum Peak Load • 144 MHz: 1 kW Maximum Peak Load |
| SWR Detection Sensitivity | 4 W minimum forward RF power required for accurate detection |
| Interface Connection Ports | Female PL Type (SO-239 low-loss bulkhead sockets) |
| System Impedance | 50 Ohms Nominal |
| Backlight Power System | 13.8V DC input link for dial face illumination (External power cable included) |
| Dimensions | 155 x 80 x 100 mm |
| Weight | 670 grams |
| Package Content | 1x Daiwa CN-501H Meter Console, 1x DC Backlight Power Cable |
