COLLINS RADIO COMPANY 70E-12 Ham Receiver

( Brand: Collins Radio Company ), ( Manufacturer Part Number: 70E-12 ), ( Model: COLLINS 70E-12 ), ( Compatiblebrand: Universal ), ( Type: Receiver )

Review COLLINS RADIO COMPANY Ham Vintage Receiver Nice

The **Collins Radio 70E-12** is a legendary, high-performance **shortwave and HF amateur radio receiver** that remains one of the most sought-after and revered pieces of vintage radio equipment in the world. Designed and manufactured by the Collins Radio Company in the late 1950s, this superheterodyne receiver exemplifies the pinnacle of analog radio engineering, blending exceptional sensitivity, selectivity, and reliability with a robust, all-metal construction that ensures durability for decades. Built for serious radio enthusiasts, military applications, and professional monitoring, the 70E-12 operates across a wide frequency range from **1.5 to 30 MHz**, making it ideal for amateur radio (ham) use, shortwave listening (SWL), and even early satellite communications. Its **dual-conversion superheterodyne design** featuring a first intermediate frequency (IF) of **455 kHz** and a second IF of **45.5 kHz** provides unmatched rejection of image frequencies and adjacent-channel interference, allowing operators to pull in faint signals buried in static or strong local broadcasts. The receiver s **fully transistorized circuitry** (in later models) and **vacuum tube-based amplification stages** deliver a dynamic range and signal clarity that modern solid-state receivers struggle to match, with a **minimum audible signal (MAS)** of just **0.1 microvolts** far below the sensitivity of contemporary digital receivers.

The **70E-12 s front panel** is a study in functional elegance, featuring a **rotary tuning dial** with a **calibrated frequency scale**, a **fine-tuning knob** for precise adjustments, and a **band-spread control** that allows operators to sweep through narrow frequency ranges with ease. The **S-meter** provides a visual indication of signal strength, while the **AGC (Automatic Gain Control) and RF gain controls** enable fine-tuning of sensitivity for weak or strong signals alike. A **BFO (Beat Frequency Oscillator)** circuit facilitates CW (morse code) reception, and the **SSB (Single Sideband) filter** ensures crystal-clear voice transmissions, making it equally suitable for both amateur and professional use. The receiver s **dual-conversion architecture** also contributes to its legendary **selectivity**, with a **6 kHz bandwidth filter** that sharply rejects unwanted signals while preserving the clarity of desired transmissions. This makes the 70E-12 particularly well-suited for **DX (long-distance) communication**, where weak signals must be extracted from a sea of interference.

Beyond its technical prowess, the **70E-12 is a work of art in engineering craftsmanship**. Constructed primarily from **aluminum and steel**, its **all-metal chassis** is not only rugged but also helps shield against electromagnetic interference, ensuring clean, distortion-free audio. The **front panel is finished in a durable, matte black enamel**, with **chrome-trimmed knobs and switches** that add a touch of vintage sophistication. The **rear panel** features a **high-quality speaker output**, **headphone jack**, and **external antenna input**, along with **power and tuning controls**, all designed for seamless integration into a home or field station. While the 70E-12 was originally intended for **military and government use**, its adaptability and performance have made it a favorite among **ham radio operators, shortwave listeners, and vintage radio collectors** worldwide. Whether used for **contesting, DXing, or simply enjoying the crisp, analog clarity of old-school radio**, the Collins 70E-12 offers an experience that is both nostalgic and unparalleled in modern receivers.

For those seeking a **true analog listening experience**, the 70E-12 delivers a **warm, natural sound** that digital receivers often struggle to replicate, with a **full-frequency response** that brings out the nuances of voice, music, and CW transmissions. Its **lack of digital processing** means there are no artifacts, no compression, and no loss of dynamic range just pure, unfiltered radio. While modern receivers may offer digital tuning, waterfall displays, and built-in logging, the **70E-12 s analog simplicity** fosters a deeper connection to the art of radio listening, rewarding patience and skill with rewards that feel almost tactile. Whether restored to pristine condition or used in its original vintage state, this receiver is more than just a piece of equipment it is a **legacy of radio innovation**, a testament to the golden age of analog design, and a tool that continues to inspire new generations of radio enthusiasts. For collectors, operators, and purists alike, the Collins 70E-12 remains an **icon of radio engineering**, a machine that turns every listen into an adventure.

The Collins Radio 70E-12 is a classic and highly regarded HF (High Frequency) amateur radio transceiver, originally introduced in the 1960s. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Collins 70E-12**

1. **Superior Build Quality and Reliability**

The 70E-12 is renowned for its robust construction, using high-quality materials and components that were state-of-the-art in its era. Many units remain fully operational after decades of use, with proper maintenance. Its mechanical tuning dials and solid-state circuitry (for later models) contribute to long-term reliability.

2. **Excellent Performance on HF Bands**

The 70E-12 delivers outstanding sensitivity, selectivity, and dynamic range, making it capable of receiving weak signals even in crowded bands. Its crystal filter provides sharp selectivity, which is beneficial for DX (long-distance) communication and contesting. The receiver section is particularly strong, with low noise floor and minimal interference.

3. **Versatility and Features**

- **Dual Conversion Design**: The 70E-12 uses a dual-conversion architecture (first to an intermediate frequency, then to a second IF), which reduces image response and improves overall performance.

- **Multiple Modes**: It supports CW (Morse code), SSB (Single Sideband), and AM (Amplitude Modulation), with excellent audio quality for voice and code.

- **Built-in Keyer**: The included internal keyer is reliable and adjustable, making it suitable for CW operation without additional equipment.

- **Power Output**: The transmitter section provides clean, linear power output (typically around 100 watts on SSB and 50 watts on CW), which is sufficient for most amateur radio activities.

- **Accessories**: The 70E-12 was designed with a wide range of optional accessories, such as the 75A-2 power amplifier, 75A-4 antenna tuner, and various filters, which enhance its functionality.

4. **Historical and Collectible Value**

For enthusiasts, the 70E-12 holds significant historical value as a piece of radio engineering heritage. Owning one can be a point of pride for collectors and hobbyists who appreciate vintage technology.

5. **Modularity and Upgradability**

The Collins 70E-12 was designed with modularity in mind. Some owners have successfully upgraded components (e.g., replacing tubes with solid-state alternatives, improving power supplies, or adding modern interfaces) to extend its lifespan or adapt it to contemporary use.

6. **Strong Community and Support**

The Collins 70E-12 has a dedicated following among amateur radio operators. There are numerous forums, clubs, and resources (e.g., schematics, repair guides, and parts suppliers) available for troubleshooting and maintenance. This community support can be invaluable for owners.

7. **Aesthetic Appeal**

The 70E-12 s classic design, with its chrome-plated front panel and robust chassis, is often considered a work of art. Many operators enjoy the visual and tactile experience of using a well-crafted piece of equipment.

---

### **Cons of the Collins 70E-12**

1. **Age and Obsolescence**

The 70E-12 is a vintage radio from the 1960s, and its technology is no longer state-of-the-art. Modern transceivers offer features like digital signal processing (DSP), touchscreens, built-in logging, and connectivity to digital modes (e.g., FT8, PSK31) that the 70E-12 lacks. For operators who rely on modern digital communication, this can be a significant limitation.

2. **Maintenance and Repairs**

- **Tube Reliability**: The 70E-12 relies on vacuum tubes (e.g., 6146, 6146B, 6146C for RF power; 6BA6, 6BA7 for IF amplification), which require periodic replacement. Tubes can fail unexpectedly, and sourcing replacements can be challenging and expensive.

- **Power Supply**: The original power supply (e.g., 75A-1) may need to be upgraded or replaced over time, as modern power sources (e.g., switch-mode power supplies) are more efficient and reliable.

- **Mechanical Wear**: The tuning dials and knobs can wear out over time, and the chassis may develop rust or other signs of aging if not stored properly. Regular maintenance is required to keep the unit in good working order.

3. **Limited Digital Modes**

The 70E-12 is not designed for modern digital modes (e.g., FT8, JT65, EME). While it can be used with external sound card interfaces for some modes, this adds complexity and may not be as efficient as dedicated modern radios.

4. **Bulk and Portability**

The 70E-12 is a large and heavy piece of equipment. The main unit, power supply, and accessories take up significant space, making it less portable than modern handheld or portable transceivers. This can be a drawback for field operations or mobile setups.

5. **Learning Curve**

Operating a vintage radio like the 70E-12 requires familiarity with analog tuning, tube adjustments, and manual tuning procedures. Modern radios often have automatic features (e.g., automatic antenna tuners, digital tuning) that simplify operation. The 70E-12 demands more hands-on involvement from the operator.

6. **Cost of Ownership**

While the initial purchase price of a used 70E-12 may be reasonable (often ranging from $500 to $2,000 depending on condition), the long-term cost of ownership can be high. This includes:

- Tube replacements (e.g., a 6146 tube can cost $50 $100 each).

- Power supply upgrades or replacements.

- Accessories (e.g., filters, amplifiers, cables).

- Maintenance (e.g., cleaning, lubricating, checking for rust).

- Potential labor costs if professional repair is needed.

7. **Compatibility with Modern Gear**

Connecting the 70E-12 to modern equipment (e.g., computers, digital interfaces, or modern antennas) may require additional adapters or interfaces. For example, using it with a sound card for digital modes may involve workarounds that are not as seamless as with contemporary radios.

8. **Limited Factory Support**

Collins Radio (now part of Rockwell Collins) no longer produces the 70E-12, and official support or warranties are unavailable. Owners must rely on community knowledge or third-party repair services.

---

### **Conclusion**

The Collins 70E-12 is a remarkable piece of radio engineering with unmatched performance, reliability, and historical significance. It remains a favorite among purists, collectors, and operators who appreciate analog technology and the challenge of maintaining vintage equipment. For those who enjoy the tactile experience of tuning a mechanical dial, the satisfaction of operating a well-crafted radio, and the thrill of making contacts on a classic machine, the 70E-12 is an excellent choice.

However, the 70E-12 is not without its drawbacks. Its age means it lacks modern features, requires significant maintenance, and may not be practical for operators who rely heavily on digital communication or portability. The cost of ownership including tubes, power supplies, and accessories can add up over time, and the learning curve for operating and maintaining the radio can be steep.

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### **Recommendation**

- You are passionate about vintage radio technology and enjoy the challenge of maintaining and operating a classic transceiver.

- You prioritize analog performance, reliability, and the historical value of the equipment.

- You are willing to invest time and resources in maintenance, repairs, and upgrades.

- You plan to use the radio primarily for HF SSB and CW operation, with minimal reliance on digital modes.

- You have space and are not concerned about portability.

- You are part of or willing to engage with the Collins 70E-12 community for support and troubleshooting.

- You are primarily interested in modern digital modes (e.g., FT8, EME) or require advanced features like touchscreens, built-in logging, or connectivity to smart devices.

- You value portability and plan to use the radio for field operations or mobile setups.

- You are not comfortable with the maintenance requirements (e.g., tube replacements, power supply upgrades) or do not have the budget for ongoing upkeep.

- You prefer a "plug-and-play" experience with minimal troubleshooting or adjustments.

- You are a beginner and want a radio that is easier to learn and operate.

- If you love the analog experience but want something more modern, consider a vintage-style transceiver like the **Yaesu FT-1000MP** or **Icom IC-706MKIIG**, which offer analog performance with some modern conveniences.

- For digital modes and modern features, invest in a contemporary transceiver like the **Icom IC-7300**,

Details:

This item is being sold strictly as-is for parts or restoration. If you do not see it in the photos, is likely included sale. That includes manuals, packaging, power cords, etc. This receiver is in good cosmetic condition.

The bottom line is this.

part #: 70e12 price

• $30.00

specifications hamamateuradio:

• brand: Collins Radio Company
• mpn: 70e-12
• model: Collins 70e-12
• compatiblebrand: Universal
• type: Receiver

shipping hamamateuRadio:

• type: Fixed
• service: Standard
• cost: $10.00
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• class: Standard

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• policy: No Returns

offer hamamateuRadio:

• sold: 0
• quantity: 1
• started: April 6, 2026
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• city: Sparks, Nevada
• # reviews: 28947
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general hamamateuRadio:

• condition: Used
• Radio Communication > Ham, Amateur Radio > Ham Radio Receivers

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