Daiwa CN-501H Power Meter – HF 6m 2m Bands High Power Forward & SWR

Description

Product Overview

The Daiwa CN-501H is a precision forward‑power, reflected‑power, and SWR meter designed for amateur radio operators who demand accurate measurements across a wide frequency range. Built with a rugged 50‑ohm SO‑239 (UHF) input/output interface, the unit tolerates the harsh conditions of field deployments while maintaining tight calibration. Its cross‑needle meter design displays forward power, reflected power, and SWR simultaneously, eliminating the need for recalibration between measurements and allowing operators to monitor all three parameters at a glance.

Frequency coverage spans from 1.8 MHz to 150 MHz, encompassing the HF, 6 m, and 2 m amateur bands. The meter offers selectable forward‑power ranges of 15 W, 150 W, and up to 1.5 kW, with a rating of 1.5 kW for frequencies between 1.8 MHz and 60 MHz and 1 kW at 144 MHz. This flexibility enables the CN‑501H to serve both low‑power QRP enthusiasts and high‑power contesters without sacrificing accuracy.

One of the standout specifications is the minimum SWR detection threshold of just 4 W, which provides reliable SWR readings even when operating at very low power levels. The meter’s internal circuitry is engineered to minimize insertion loss, ensuring that the presence of the meter does not adversely affect the antenna system’s performance. Additionally, the optional 12 V illumination feature enhances visibility in low‑light environments, such as night‑time field operations or portable setups.

Physical dimensions of 6.89 × 5 × 3.86 inches and a weight of 1.88 lb make the CN‑501H compact enough to fit into most radio rigs while still offering a sturdy, anti‑slip edge guard for protection against accidental drops. The device is manufactured by Daiwa, a reputable name in radio equipment, and has garnered a solid 4.3‑star rating from over 175 customer reviews, reflecting its reliability and user satisfaction.

Overall, the Daiwa CN‑501H combines high‑power handling, low‑power sensitivity, and a user‑friendly display in a durable package, making it an essential tool for any serious amateur radio operator seeking precise power and SWR monitoring.

Usage

In a typical HF station, the CN‑501H can be installed between the transmitter and the antenna feed line, providing real‑time feedback on forward and reflected power during tuning, antenna adjustments, and power‑level changes. Its ability to display SWR alongside power readings helps operators quickly identify mismatches and make corrective adjustments without the need for separate SWR meters.

For portable operators, the meter’s compact size and optional illumination make it an excellent companion for field days, emergency communications, and remote base stations powered by generators or battery banks. The robust SO‑239 connectors ensure a secure mechanical and electrical connection even when the rig is moved frequently.

Contest participants benefit from the CN‑501H’s high‑power range, which accurately tracks power levels up to 1.5 kW, allowing them to stay within contest power limits while maximizing signal strength. The low‑power SWR detection also assists QRP operators in fine‑tuning their antennas for optimal efficiency, which is critical when operating with limited power budgets.

When used with a 12 V lighting module, the meter’s display remains legible in dimly lit environments such as night‑time field operations, indoor basements, or mobile rigs where ambient lighting is insufficient. This feature enhances safety by allowing operators to monitor power levels without straining their eyes.

Why Choose Us

Choosing the Daiwa CN‑501H means selecting a product backed by a manufacturer with decades of experience in radio equipment. Daiwa’s commitment to quality control ensures each unit meets stringent performance standards before it reaches the customer, reducing the likelihood of defects and providing peace of mind.

The meter’s cross‑needle design simplifies the user experience, presenting three critical parameters on a single face. This reduces the learning curve for new operators and speeds up troubleshooting for seasoned hams, translating into more efficient on‑air time and less downtime.

Our after‑sales support includes a dedicated technical assistance line, comprehensive user manuals, and access to firmware updates if applicable. Customers can also rely on a one‑year warranty that covers manufacturing defects, reinforcing confidence in the product’s durability.

Environmental resilience is another key advantage. The CN‑501H’s anti‑slip edge guards and rugged housing protect it from accidental impacts, while the internal circuitry is designed to withstand temperature variations commonly encountered in outdoor installations.

Key Features

• Simultaneous forward, reflected power, and SWR display eliminates the need for multiple meters, saving space and simplifying operation.
• Wide frequency coverage from 1.8 MHz to 150 MHz supports HF, 6 m, and 2 m bands for versatile amateur radio use.
• High‑power handling up to 1.5 kW ensures accurate readings for both low‑power QRP and high‑power contest stations.
• Low‑power SWR detection threshold of 4 W provides reliable SWR monitoring even at minimal output levels.
• Dedicated customer support and a one‑year warranty give confidence in long‑term reliability and service.

FAQ

What type of connectors does the CN‑501H use?

The meter features standard SO‑239 (UHF) input and output connectors, which are compatible with most amateur radio coaxial cable assemblies. These connectors provide a secure, low‑loss connection and are widely used in the hobby.

Can the meter be used with a portable antenna setup?

Yes, the CN‑501H’s compact dimensions and optional 12 V illumination make it well‑suited for portable and field operations. Its rugged construction and anti‑slip edge guards protect the unit during transport and setup in outdoor environments.

How does the low‑power SWR detection improve QRP operation?

When operating at low power, traditional SWR meters may struggle to provide accurate readings. The CN‑501H’s minimum SWR detection threshold of 4 W allows operators to monitor antenna matching precisely, ensuring efficient power transfer and optimal signal propagation even with very low output levels.

Is the meter calibrated for different power ranges?

Yes, the CN‑501H offers selectable forward‑power ranges of 15 W, 150 W, and up to 1.5 kW. Users can switch between ranges to maintain measurement accuracy across a wide span of power levels, from QRP to high‑power transmissions.

What warranty and support options are available?

Daiwa provides a one‑year limited warranty covering manufacturing defects. In addition, customers have access to technical support via phone or email, detailed user documentation, and online resources for troubleshooting and firmware updates if needed.