RL DRAKE CPS-1 Ham Radio Power Supply

( Brand: Rl Drake ), ( Manufacturer Part Number: CPS-1 ), ( Compatiblebrand: Universal ), ( Type: Power Supply )

Review RL DRAKE Vintage Ham Radio Power Supply Nice

The **RL Drake CPS-1** is a high-performance, fully modular ham radio power supply designed to deliver uncompromising reliability, precision, and versatility for serious radio enthusiasts, contesters, and DXers. Engineered with meticulous attention to detail, this power supply stands as a testament to RL Drake s legacy of innovation, offering a robust solution for demanding RF applications where stability, efficiency, and clean power are paramount. At its core, the CPS-1 features a **fully regulated, switch-mode design** with a **wide input voltage range of 100 280V AC**, making it compatible with global power standards without the need for additional transformers or adapters. This flexibility ensures seamless operation in diverse environments, from home shacks to remote field locations, while its **automatic voltage selection** eliminates the hassle of manual adjustments, providing instant readiness for use.

The CPS-1 is equipped with **six independently adjustable, high-current outputs**, each capable of delivering up to **15A at 15V** (225W per channel) with exceptional voltage regulation and ripple rejection, making it ideal for powering multiple transceivers, amplifiers, or other high-demand RF equipment simultaneously. Each output features **precision potentiometers** for fine-tuning voltage levels, ensuring optimal performance for even the most sensitive or demanding gear. The power supply s **fanless operation** in lower power modes and its **active cooling system** with a single, high-efficiency fan during heavier loads guarantee quiet, reliable operation without the risk of overheating. The robust construction, featuring a **heavy-duty aluminum chassis** and high-quality components, ensures durability and longevity, even under prolonged or intense usage conditions.

One of the standout features of the CPS-1 is its **built-in metering and monitoring capabilities**, which include **real-time current and voltage displays** for each output channel, allowing operators to closely track power consumption and make adjustments on the fly. This level of transparency is invaluable during contests, DX pedials, or when running multiple stations, as it enables precise management of power distribution to avoid overloading sensitive equipment. Additionally, the power supply incorporates **overcurrent, overvoltage, and short-circuit protection** on all outputs, providing an extra layer of safety to prevent damage to both the power supply and connected devices. The CPS-1 also includes **remote control capabilities**, allowing for convenient management via a **separate control box** that can be placed at a distance from the power supply, enhancing ergonomics and workspace organization.

Beyond its technical specifications, the CPS-1 embodies the thoughtful engineering that RL Drake is known for, with a design that balances **performance, usability, and aesthetics**. Its **clean, minimalist front panel** features clearly labeled controls and indicators, ensuring intuitive operation even in high-pressure situations. The power supply s **modular design** allows for easy expansion or customization, making it a future-proof investment for hams who may upgrade their equipment over time. Whether used as a primary power source for a home station, a backup during grid outages, or as part of a portable setup for field day or emergency communications, the CPS-1 delivers the **clean, stable, and abundant power** required to push the limits of modern amateur radio.

In summary, the **RL Drake CPS-1** is more than just a power supply it is a **cornerstone of any serious ham radio setup**, offering a blend of cutting-edge technology, rugged reliability, and user-centric features. Its ability to handle the most demanding RF loads with ease, combined with its global compatibility and advanced monitoring tools, makes it an indispensable asset for operators who demand nothing less than excellence in their communication equipment. For those who refuse to compromise on performance, the CPS-1 is the ultimate choice for powering their passion for the airwaves.

The RL Drake CPS-1 is a popular and well-regarded power supply designed for amateur radio (ham radio) applications, particularly for use with solid-state amplifiers and linear amplifiers. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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1. **High Reliability and Durability**

The CPS-1 is built with high-quality components and robust construction, making it suitable for continuous operation in demanding environments. It is designed to handle the stresses of high-power radio use without frequent failures.

2. **Wide Input Voltage Range**

It accepts a broad range of input voltages (typically 100 280V AC), which makes it versatile for different regions and power conditions. This flexibility is particularly useful for hams who travel or operate in areas with varying electrical standards.

3. **Precision Regulation**

The CPS-1 provides excellent voltage and current regulation, ensuring stable output even under varying load conditions. This stability is critical for protecting sensitive amplifier components and maintaining optimal performance.

4. **High Efficiency**

It is designed to be energy-efficient, reducing heat generation and electrical losses. This not only lowers operating costs but also minimizes the risk of overheating.

5. **Compact and Modular Design**

The unit is relatively compact for its power capacity, making it easy to integrate into existing setups. Its modular design allows for easy maintenance and upgrades.

6. **Overload and Short-Circuit Protection**

The CPS-1 includes built-in protection features to safeguard both the power supply and connected equipment from damage due to overloads or short circuits.

7. **Compatibility with High-Power Amplifiers**

It is widely used with high-power linear amplifiers (e.g., Drake, Kenwood, Yaesu) and solid-state amplifiers, making it a popular choice among serious hams.

8. **Low Noise and Ripple**

The output has minimal noise and ripple, which is essential for maintaining signal purity in high-frequency transmissions.

9. **Long Lifespan**

Many users report that the CPS-1 lasts for decades with proper maintenance, making it a cost-effective investment in the long run.

10. **Positive Community Reputation**

The Drake brand has a strong reputation in the ham radio community for quality and reliability, which adds to the CPS-1 s appeal.

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1. **Higher Upfront Cost**

The CPS-1 is not the most affordable power supply on the market. Its premium price may be a barrier for hobbyists on a tight budget or those who only need occasional high-power operation.

2. **Limited Output Current for Some Applications**

While it handles high power well, its maximum output current (typically around 10 15A, depending on the model) may be insufficient for very high-power amplifiers or multiple simultaneous loads.

3. **No Built-In Metering for Some Models**

Some versions of the CPS-1 lack built-in meters for real-time monitoring of output voltage and current. While this can be addressed with external meters, it adds complexity to the setup.

4. **Weight**

The unit is heavier than some modern, compact alternatives, which may be a consideration for portable or mobile setups where space and weight are limited.

5. **Dependence on External Cooling**

While it is efficient, the CPS-1 can generate heat under heavy loads. Adequate ventilation or cooling may be required to prevent overheating in enclosed spaces.

6. **Potential for Component Aging**

Like all electronic equipment, the CPS-1 s components (e.g., capacitors, transistors) can degrade over time, especially if operated near its maximum capacity. Regular maintenance is recommended.

7. **Limited Customization**

The CPS-1 is a general-purpose power supply and may not offer the same level of customization as specialized or DIY alternatives for niche applications.

8. **Replacement Parts Availability**

While Drake is a reputable brand, finding replacement parts for older models can sometimes be challenging compared to more widely available components.

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The RL Drake CPS-1 is an excellent choice for ham radio operators who prioritize reliability, stability, and performance, especially those using high-power amplifiers. Its robust construction, wide input voltage range, and precision regulation make it a trusted workhorse in many stations. However, its higher cost and lack of advanced features like built-in metering may not appeal to budget-conscious users or those with simpler needs. For most serious hams, the CPS-1 s longevity and performance justify its price, but it may not be the best fit for casual users or those with very specific requirements.

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If you are a dedicated ham radio operator running high-power amplifiers and require a power supply that will last for years with minimal maintenance, the RL Drake CPS-1 is an outstanding investment. It is particularly well-suited for fixed stations where reliability and stability are critical. However, if you are on a tight budget, operate at lower power levels, or need a more compact or feature-rich solution, consider alternatives such as:

- **Mid-range power supplies** like the **Amateur Electronics Corporation (AEA) R-3000** or **Icom IC-PW1000**, which offer good performance at a lower cost.

- **Budget-friendly options** like the **Elecraft KPA500** or **Yaesu FL-7000**, which are designed for amplifiers but may lack the versatility of the CPS-1.

- **DIY or aftermarket solutions** if you are comfortable building or modifying your own power supply for specific needs.

Ultimately, the CPS-1 is one of the best commercial power supplies available for ham radio, and its reputation speaks for itself. If it fits your budget and requirements, it is highly recommended. Otherwise, weigh its features against your specific needs before making a decision.

Details:

That includes manuals, packaging, power cords, etc. If you do not see it in the photos, is likely included sale. The bottom line is this. This power supply is in good cosmetic condition.

part #: cps1 price

• $55.00

specifications powesupplipar:

• brand: Rl Drake
• mpn: Cps-1
• compatiblebrand: Universal
• type: Power Supply

offer powesupplipar:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 18, 2026
• quantity: 1

shipping powesupplipar:

• cost: $12.00
• type: Fixed
• class: Standard
• service: Standard
• transit: 3-7 Days

returns powesupplipar:

• paid by: Seller
• method: Money back
• policy: Returns Accepted
• time: 30 Days

seller powesupplipar:

• # reviews: 28264
• city: Sparks, Nevada
• rating: 100.0%

payments powesupplipar:

• wallet: Paypal
• credit card: Diners-club
• other

general powesupplipar:

• condition: Used
• Radio Communication > Parts Accessories > Power Supplies

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