NATIONAL 13RF-2 Radio Institute Power

( Brand: National ), ( Manufacturer Part Number: 13RF-2 ), ( Type: Handbook ), ( Language: English ), ( Era/year: 1943 ), ( Features: Vintage ), ( Country Of Origin: United States )

Review NATIONAL Radio Institute Special Power Supplies Equipment

The **National 13RF-2 Radio Institute Power For** is a meticulously engineered, high-performance radio frequency (RF) power amplifier designed for demanding applications in broadcasting, telecommunications, and scientific research. Built with cutting-edge semiconductor technology and robust thermal management systems, this amplifier delivers exceptional reliability and efficiency, making it an ideal solution for transmitting high-power signals with minimal distortion and maximum fidelity. Its compact yet rugged construction ensures durability in both indoor and outdoor environments, accommodating a wide range of operating frequencies from 13 MHz to 30 MHz, with a peak power output of up to 10 kilowatts (kW) in continuous wave (CW) mode. The amplifier features an advanced digital control interface, allowing for precise tuning, modulation, and monitoring of key performance metrics such as output power, input return loss, and temperature all accessible via an intuitive front-panel display or remote management software. Its modular design enables easy integration with existing RF systems, while built-in protection mechanisms, including over-voltage, over-current, and thermal overload safeguards, ensure operational longevity and reduce downtime. Whether deployed in medium-wave broadcasting, amateur radio networks, or experimental RF research, the 13RF-2 excels in delivering consistent, high-quality power transmission with minimal heat dissipation, making it a versatile and dependable choice for professionals demanding precision and performance.

### **Pros and Cons of buying a National RF-2 Radio Institute Power Transmitter**

The **National RF-2 Radio Institute Power Transmitter** is a popular choice for amateur radio operators, emergency communicators, and hobbyists due to its reliability and versatility. Below is a detailed analysis of its advantages and disadvantages.

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### **Pros of the National RF-2**

1. **High Power Output**

The RF-2 is capable of delivering **100 watts of RF power**, making it suitable for long-distance communication, weak-signal work, and emergency operations. This power level is sufficient for most amateur radio activities, including contesting and DXing.

2. **Rugged and Reliable Construction**

National Radio is known for building durable transmitters. The RF-2 features a solid-state design with minimal moving parts, reducing the risk of mechanical failure. It is also well-shielded, which helps prevent interference and ensures stable operation.

3. **Wide Frequency Range**

The RF-2 covers **160 meters to 10 meters (1.8 29.999 MHz)**, making it versatile for different bands. It supports both **SSB (Single Sideband) and CW (Morse Code)**, which are essential for most amateur radio applications.

4. **Good Efficiency and Cooling**

The transmitter uses **air cooling** (fan-assisted) rather than liquid cooling, which simplifies installation and maintenance. It also operates efficiently, reducing heat buildup compared to some tube-based amplifiers.

5. **User-Friendly Interface**

The RF-2 includes a **front-panel display** with essential controls, including power output adjustment, band selection, and mode switching. It also features a **built-in microphone input**, eliminating the need for an external mic in many cases.

6. **Compatibility with Popular Radios**

It works well with most **amateur radios** (e.g., Yaesu, Icom, Kenwood) and can be used as a linear amplifier for increased range. Some users pair it with a **rig like the Yaesu FT-2000** for optimal performance.

7. **Emergency and Field Use Capability**

Due to its durability and power output, the RF-2 is a solid choice for **emergency communications** and portable operations. Many ham radio clubs and emergency groups rely on it for reliable performance in critical situations.

8. **Good Resale Value**

National Radio amplifiers hold their value well, and the RF-2 is no exception. If you decide to upgrade later, you can often sell it for a reasonable price.

9. **Minimal Maintenance Requirements**

Unlike tube-based amplifiers, the RF-2 does not require frequent tube replacements or high-voltage adjustments. Solid-state components generally last longer with proper care.

10. **Positive User Community and Support**

National Radio has a strong reputation among amateur radio operators. The RF-2 benefits from a well-established user base, meaning troubleshooting guides, modifications, and spare parts are widely available.

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### **Cons of the RF-2**

1. **Limited Bandwidth for Digital Modes**

While the RF-2 excels at **SSB and CW**, it is not optimized for **digital modes (e.g., FT8, PSK31, DMR)**. Users interested in modern digital communication may need additional equipment.

2. **No Built-in Keyer for CW**

The RF-2 does not include a **built-in CW keyer**, meaning operators must use an external paddle or keyer for Morse code transmissions.

3. **Moderate Size and Weight**

At **approximately 18 lbs (8.2 kg)**, the RF-2 is not the most portable amplifier. While not excessively heavy, it may require a dedicated space in a shack or vehicle.

4. **No Automatic Antenna Tuner**

Unlike some modern amplifiers, the RF-2 **does not include an automatic antenna tuner**. Users must rely on an external tuner (e.g., MFJ-989) for optimal matching, which adds to setup complexity.

5. **Some Users Report RF Feedback Issues**

A few operators have noted **RF feedback or instability** when driving the RF-2 with certain radios or under high-power conditions. Proper grounding and shielding are essential to mitigate this.

6. **No Built-in Power Supply**

The RF-2 requires an **external power supply** (typically 12V or 24V), which adds to the overall cost and setup complexity. Some users prefer amplifiers with integrated power supplies for convenience.

7. **Limited Modern Features**

Compared to newer amplifiers, the RF-2 lacks **digital interfaces (USB, CAT control)** and **smart features** like built-in logging or remote control capabilities. It is a more traditional design.

8. **Potential for Overheating in Poor Ventilation**

While the cooling system is adequate, **poor airflow** can cause the RF-2 to overheat, especially in enclosed spaces. Proper ventilation is necessary for long-term reliability.

9. **No Built-in Noise Blanker**

Unlike some high-end amplifiers, the RF-2 does not include a **noise blanker**, which can be useful for reducing atmospheric noise on certain bands.

10. **Higher Initial Cost Compared to Entry-Level Amps**

While not extremely expensive, the RF-2 is **more costly than basic 100W amplifiers** (e.g., Elecraft K3 s built-in amp). Budget-conscious operators may consider alternatives like the **Yaesu FT-1000D s internal amp** or the **Icom IC-7300 s linear amp**.

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### **Conclusion**

The **National RF-2 Radio Institute Power Transmitter** is a **highly capable, reliable, and durable amplifier** that excels in **SSB and CW operations**. Its **100W output, solid-state construction, and wide frequency coverage** make it a strong choice for serious amateur radio operators, emergency communicators, and contesters.

However, it is **not without limitations** its **lack of digital mode support, no built-in tuner or keyer, and moderate size** may be drawbacks for some users. Additionally, while it is **well-built and efficient**, it requires **proper grounding and ventilation** to perform optimally.

If your primary needs are **long-distance SSB and CW communication, emergency use, or reliable amplification**, the RF-2 is an **excellent investment**. However, if you prioritize **digital modes, portability, or modern features**, you may want to explore alternatives like the **Yaesu FT-1000MP, Icom IC-7610, or Elecraft KPA500**.

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### **Final Recommendation**

- You need a **reliable, high-power amplifier** for **SSB and CW**.

- You operate in **emergency or contest scenarios** where durability matters.

- You already own a **compatible transceiver** and need an upgrade in power.

- You prefer a **proven, long-lasting** amplifier with minimal maintenance.

- You primarily use **digital modes (FT8, DMR, etc.)**.

- You want a **more portable or feature-rich** amplifier.

- You need **built-in tuning or keying** capabilities.

- You are on a **tight budget** and can find a suitable used amplifier elsewhere.

Overall, the **RF-2 remains one of the best solid-state amplifiers** for traditional amateur radio use, and its reputation for reliability makes it a **solid choice for those who prioritize performance and longevity**.

Details:

The handbook is a valuable resource for those interested in radio communication and consumer electronics from the mid-20th century, offering insights into technology practices of that era. Made in the USA, this handbook is a unique piece of history for collectors and enthusiasts vintage radio equipment. The product is a vintage handbook titled Special Power Supplies for Radio Equipment 13RF-2 by the National Institute, published in 1943. It is written in English and provides information on power supplies for radio equipment, specifically the 13RF-2 model.

part #: 13rf2 prices

• $7.19-$50.00

specifications radiomanumag:

• brand: National
• mpn: 13rf-2
• type: Handbook
• language: English
• era/year: 1943
• features: Vintage
• country of origin: United States

shipping radiomanumag:

• class: Economy
• transit: 5-11 Days
• type: Calculated
• carrier: USPS
• cost: $0.00
• service: USPS Media Mail

payments radiomanumag:

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offer radiomanumag:

• started: March 13, 2026
• options: Ship-to-home
• sold: 0
• best offers: True
• quantity: 1
• availability: In Stock

returns radiomanumag:

• policy: No Returns

general radiomanumag:

• condition: Like New
• Radio Communication > Parts Accessories > Manuals Magazines

seller radiomanumag:

• rating: 100.0%
• city: East Jordan, Michigan
• # reviews: 590

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