Collins 75a 3 – the Vintage Radio Receiver

Collins 75a 3

The Collins 75a 3 is a high-frequency receiver that was first introduced in the 1950s. It quickly gained a reputation for its exceptional sensitivity and selectivity, making it a popular choice for both amateur and professional radio operators. The receiver is housed in a sturdy metal chassis and features a classic design that is reminiscent of the golden age of radio.

One of the standout features of the Collins 75a 3 is its impressive frequency coverage. It can tune in to a wide range of frequencies, from the longwave band all the way up to the 10-meter amateur band. This versatility makes it suitable for a variety of applications, whether you are interested in shortwave listening, amateur radio, or even military communications.

In terms of performance, the Collins 75a 3 does not disappoint. Its advanced circuitry and high-quality components ensure excellent sensitivity and selectivity, allowing you to pick up weak signals with ease. The receiver also features a built-in noise limiter, which helps to reduce interference and improve overall signal clarity.

From a historical perspective, the Collins 75a 3 holds a special place in the world of radio. It was produced during a time when radio technology was rapidly evolving, and it represents the pinnacle of craftsmanship and engineering from that era. Owning a Collins 75a 3 is like owning a piece of history, and it is sure to be a prized possession for any radio enthusiast or collector.

Features and Specifications of the Collins 75a 3

The Collins 75a 3 is a high-performance radio receiver that offers a wide range of features and specifications. Designed for amateur radio enthusiasts, this receiver is known for its exceptional performance and functionality.

Frequency Coverage

The Collins 75a 3 covers a frequency range of 500 kHz to 30 MHz, allowing users to tune in to a wide variety of signals. Whether you’re interested in shortwave broadcasts, amateur radio bands, or even military communications, this receiver has you covered.

Mode Selection

With the Collins 75a 3, you have the flexibility to choose between different modes of operation. This receiver supports AM, CW, and SSB modes, allowing you to receive signals in different formats. Whether you prefer listening to voice transmissions or Morse code, this receiver can handle it all.


The Collins 75a 3 is equipped with a variety of filters to enhance your listening experience. It features a crystal filter for narrowband reception, as well as a variable bandwidth control for adjusting the filter width. This allows you to customize the receiver’s performance based on your specific needs.

Notch Filter

One of the standout features of the Collins 75a 3 is its notch filter. This filter is designed to eliminate unwanted interference, such as heterodynes or adjacent channel signals. By activating the notch filter, you can significantly improve the clarity of the received signals.

Tuning Options

The Collins 75a 3 offers multiple tuning options to ensure precise frequency selection. It features a main tuning dial for coarse tuning, as well as a fine tuning control for fine adjustments. Additionally, it has a bandspread dial for tuning in to specific frequency ranges with ease.

Audio Output

Performance and Functionality of the Collins 75a 3

The Collins 75a 3 is a high-performance radio receiver that offers exceptional functionality for amateur radio operators. With its advanced features and specifications, this radio receiver is designed to provide an outstanding performance in receiving signals.

Advanced Features

Another notable feature of the Collins 75a 3 is its excellent sensitivity. It is capable of picking up weak signals with great clarity, ensuring that users can enjoy clear and crisp audio quality. This is especially beneficial for users who are located in areas with weak signal reception.

User-Friendly Interface

The Collins 75a 3 is designed with a user-friendly interface, making it easy for users to navigate and operate. It features a clear and intuitive display, allowing users to easily access and adjust various settings. The controls are well-placed and responsive, ensuring a smooth and hassle-free user experience.

In addition, the Collins 75a 3 offers multiple tuning options, including manual tuning and preset tuning. This allows users to quickly and easily tune into their desired frequency or radio station. The radio receiver also has a memory function, allowing users to save their favorite stations for easy access.

Durability and Reliability

The Collins 75a 3 is built to last, with a sturdy construction that can withstand the rigors of regular use. It is made from high-quality materials that are resistant to wear and tear, ensuring long-lasting performance. This makes it a reliable choice for amateur radio operators who require a radio receiver that can withstand heavy usage.

Furthermore, the Collins 75a 3 is equipped with advanced circuitry and components that enhance its overall performance and reliability. It is designed to minimize interference and noise, ensuring a clean and clear signal reception. This allows users to enjoy uninterrupted listening experience.

Pros and Cons of the Collins 75a 3


  • High-quality construction: The Collins 75a 3 is built to last with its durable materials and solid construction.
  • Excellent audio quality: This radio provides clear and crisp audio, allowing for easy communication.
  • Wide frequency range: With a wide frequency range, the Collins 75a 3 can be used for various purposes, including amateur radio and shortwave listening.
  • Easy to use: The Collins 75a 3 features a user-friendly interface, making it simple to operate even for beginners.
  • Reliable performance: This radio offers reliable performance, ensuring that you can count on it in critical situations.


  • Expensive: The Collins 75a 3 is a high-end radio, which means it comes with a higher price tag compared to other models on the market.
  • Large and bulky: Due to its size and weight, the Collins 75a 3 may not be suitable for portable use or for those with limited space.
  • Limited availability: Finding a Collins 75a 3 may be challenging as it is a vintage radio and may not be readily available in the market.
  • Requires technical knowledge: Operating and maintaining the Collins 75a 3 may require some technical knowledge, which may be a drawback for beginners.
  • Lack of modern features: The Collins 75a 3 does not offer some of the modern features found in newer radios, such as digital displays or built-in antennas.

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