COLLINS Radio Power Filament Transformer POWER/115 6.3V 672-0069-00

( Brand: Collins ), ( Manufacturer Part Number: 672-0069 ), ( Part Type: Transformer Radio ), ( Country Of Origin: United States ), ( Modified Item: No )

Review COLLINS Vintage Radio Power/115 6.3v Filament Transformer

The **Collins 672-0069 Radio Power/115V to 6.3V Filament Transformer** is a precision-engineered component designed to deliver reliable and stable low-voltage power for vintage and modern radio equipment, ensuring optimal performance for filament-based tubes and early semiconductor circuits. Part of Collins Radio s renowned line of high-quality transformers, this unit is meticulously crafted to convert standard household 115V AC mains power into a clean, regulated 6.3V AC output, essential for powering the filaments of tubes such as 6L6, 6V6, 6F6, and other common rectifier and amplifier tubes found in classic broadcast receivers, amplifiers, and early television sets. Built with robust construction, the transformer features a tightly wound, high-grade copper winding system encased in a durable metal or insulated housing, designed to minimize energy loss and electromagnetic interference while maintaining long-term reliability. Its compact yet sturdy design allows for seamless integration into existing radio setups, whether in a dedicated chassis or as part of a retrofitted restoration project. Ideal for both hobbyists and professional technicians, this transformer excels in applications where consistent filament voltage is critical, such as in Collins-branded equipment, military radios, and other high-fidelity audio systems where signal integrity must be preserved. With its rugged build and adherence to Collins engineering standards, the 672-0069 transformer remains a trusted choice for preserving the performance and longevity of vintage radio gear.

The Collins 672-0069 is a high-voltage power transformer designed to provide the necessary filament and high-voltage power for vintage Collins radio receivers, particularly those from the 1940s and 1950s. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of buying a Collins 672-0069 Transformer**

1. **Compatibility with Vintage Collins Receivers**

The 672-0069 is specifically designed for Collins radio equipment, such as the KWM-1, KWM-2, KWM-3, and other models from the same era. It provides the correct filament (6.3V) and high-voltage (115V) power requirements for these radios, ensuring proper operation without modification.

2. **High Quality and Durability**

Collins was a reputable manufacturer of high-end radio equipment during its time, and its transformers were built to last. The 672-0069 is likely constructed with robust materials, including high-quality wire and insulation, which can withstand years of use if maintained properly.

3. **Ease of Integration**

Since this transformer is designed for Collins radios, it is likely to have the correct pinout, wiring, and mounting specifications. This reduces the need for extensive modifications or custom wiring when replacing a faulty or missing transformer in a restored receiver.

4. **Historical and Collectible Value**

For enthusiasts restoring or collecting vintage Collins radios, the 672-0069 is a genuine, period-correct component. Owning original parts adds authenticity to a restoration project and can increase the value of the radio as a collectible.

5. **Reliability for Amateur Radio Use**

If you are using a Collins radio for amateur radio operations, this transformer ensures that the receiver meets the performance standards expected from vintage equipment. The high-voltage section is designed to handle the demands of tube-based circuitry without excessive heat or failure.

6. **Availability of Replacement Parts**

While Collins transformers are not mass-produced today, the 672-0069 is still relatively accessible through vintage electronics dealers, eBay, or specialized radio restoration forums. This makes it easier to source if you need spares or replacements in the future.

7. **No Need for Custom Wiring or Adaptation**

Unlike generic transformers, the 672-0069 is tailored to the Collins schematic. This means you won t have to worry about voltage mismatches, incorrect filament ratings, or other issues that could arise from using a non-matching transformer.

---

### **Cons of buying a Collins 672-0069 Transformer**

1. **Cost**

Vintage Collins components, especially transformers, can be expensive. The 672-0069 may cost significantly more than a modern or aftermarket alternative, depending on availability and condition. For budget-conscious restorers, this could be a limiting factor.

2. **Age-Related Wear and Potential Issues**

- **Dry or degraded insulation**, which could cause short circuits or reduced lifespan.

- **Corrosion or oxidation** on terminals or windings, potentially leading to poor connections.

- **Mechanical fragility** due to aging materials, such as brittle insulation or weakened mounting brackets.

Testing and inspection are essential before use.

3. **Limited Availability of New or Refurbished Units**

Unlike mass-produced modern components, Collins transformers are not commonly stocked by electronics suppliers. You may need to rely on eBay, flea markets, or specialized dealers, which can be hit-or-miss. This scarcity can also drive up prices for rare or high-demand units.

4. **Risk of Counterfeit or Poor-Quality Replicas**

Due to the demand for vintage parts, some sellers may offer replicas or knockoffs that are not genuine Collins units. These may not perform as expected, lack proper labeling, or fail prematurely. Always verify the authenticity of the transformer before purchasing.

5. **Maintenance and Testing Requirements**

- **Insulation resistance testing** to ensure no internal shorts.

- **Load testing** to verify that the transformer can handle the expected current without overheating.

- **Visual inspection** for signs of damage, corrosion, or wear.

If you lack experience with high-voltage testing, you may need to consult an expert, adding to the cost and effort.

6. **Potential for Compatibility Issues with Modified Radios**

If the Collins radio you are restoring has been heavily modified (e.g., with modern tubes, different power supplies, or altered schematics), the 672-0069 may not be fully compatible. This could require additional work to adapt the transformer to the modified setup.

7. **Environmental and Safety Concerns**

Older transformers, especially those handling high voltages, may not meet modern safety standards. If the insulation is degraded or the case is damaged, there is a risk of electrical shock or fire. Proper handling, grounding, and enclosure are critical when using this component.

---

### **Conclusion**

The Collins 672-0069 transformer is an excellent choice if you are restoring or operating a vintage Collins radio and prioritize authenticity, compatibility, and performance. Its specific design for Collins equipment ensures that it will integrate seamlessly with the receiver, providing the correct filament and high-voltage power without modification. The quality and durability of Collins components also make it a reliable long-term solution for enthusiasts.

However, the cost, potential age-related issues, limited availability, and the need for careful testing or inspection are significant drawbacks. If you are on a tight budget or lack the expertise to evaluate the transformer s condition, you may need to weigh these factors carefully. Additionally, if you are open to modern alternatives (e.g., aftermarket transformers or custom-built power supplies), you might find more affordable or safer options.

---

### **Recommendation**

- Purchase the **672-0069 from a reputable seller** (e.g., a trusted vintage electronics dealer, eBay with verified feedback, or a radio restoration forum).

- Visible damage, corrosion, or loose connections.

- Proper voltage readings under load (use a multimeter or consult a technician).

- Insulation resistance (a megohmmeter can help detect internal shorts).

- If possible, **compare it with a known-good unit** or consult a Collins expert to confirm compatibility.

- Consider **replacing the insulation or terminals** if they show signs of degradation to extend the transformer s lifespan.

- Explore **aftermarket or modern alternatives** that provide similar voltage and current outputs. While not period-correct, these can be safer and more affordable.

- Look for **refurbished or tested units** from sellers who offer warranties or return policies.

- If you are unsure about testing, **hire a professional** to evaluate the transformer before installation.

- Pair the transformer with a **modern power supply** (e.g., a regulated high-voltage PSU) if you plan to use the radio frequently. This can reduce wear on the vintage transformer and provide better stability.

- Document your restoration process, including the transformer s condition and any modifications, for future reference.

Ultimately, the **672-0069 is the best choice for purists and those restoring Collins radios to factory specifications**, but it requires careful consideration of its pros and cons. If you value authenticity and are prepared for the associated challenges, it is a worthwhile investment. Otherwise, modern alternatives may offer a more practical solution.

Details:

This unit has light cosmetic wear and tear typical for age. Common 115V 50/60 Hz primary. Good Collins 6.3V transformer that may have been part of a naval or air force radio communications equipment; the numbers with 672 seem to refer transmitters transceivers often - internet and libraries reference materials will serve you well. Test voltage 2500V.

part #: 6720069 price

• $50.00

specifications hamamateuradio:

• brand: Collins
• mpn: 672-0069
• part type: Transformer Radio
• country of origin: United States
• modified item: No

seller hamamateuradio:

• city: Portland, Oregon
• # reviews: 13911
• rating: 99.8%

payments hamamateuradio:

• wallet: Google-pay
• other
• credit card: Discover

returns hamamateuradio:

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

shipping hamamateuradio:

• carrier: FedEx, USPS, UPS
• class: Economy, Standard
• type: Calculated
• transit: 5-11 Days
• service: FedEx Ground Economy, USPS Ground Advantage, UPS Ground
• cost: $7.15

general hamamateuradio:

• Vintage Audio Video > Vintage Parts Accessories > Vintage Transmers
• condition: Used

offer hamamateuradio:

• quantity: 1
• sold: 0
• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: March 26, 2026

Collins 672-0069 Is Similar To:

• 0k-145 C-8364 Tsc-60 Collins Radio Rockwell Military Aircraft Hf Control (34.7% similar) Testing cosmetic notes: this is a unknown condition item in fair that not tested and sold as-is guaranteed unit shows several wear, scratches, cracks, dent on the exterior. 00LBS start: 99. This is not a reflection of the condition item. At template rounded right bottom. Template rounded left bottom...(October 29th, 2018)
• 127l 8581 Collins Radio New (28.6% similar) New: Collins radio gauge dial facepalms db units model 127L part no pieces included. Both have same colors, flash from camera skewed one...(October 4th, 2017)
• 17l-7 Collins Radio Company Vhf (34.9% similar) The set operates off 27. This offer is for a Collins radio company, type 17L-7, vhf transmitter. To take a good look at the pictures as they give much better than words can. 9 macs in 680 channels. 5 volts dc and covers the frequency range of this is designed for aircraft vhf communications. The ...(March 31st, 2017)
• 180l-3 Collins Radio Antenna Tuner (37.5% similar) Please look at all photos and ask questions before buying. Collins radio antenna tuner 180L-3 nice vintage piece of equipment from Kelly air force base San Antonio...(March 25th, 2018)
• 19 Collins Radio Ten Channel Broadcast Transmitter Site Monitor Mint (37% similar) This is a rare piece of broadcast history and if you collect Collins radio equipment, should interest. Condition: issued but not used. Other than this, you can consider it issued but not used. It has not been used but moved from one owner to another and handled by hand. Item for sale: one ea unused ...(June 23rd, 2018)
• 20m-cr-12-75 074-3624-000 20m-cr-12-75 Collins Radio Amateur (26.1% similar) Collins radio amateur equipment catalog 14 pages 20M-CR-12-75...(July 5th, 2017)
• 210-1018-029 Collins Radio Mechanical Filter (36.1% similar) The pass band is. This is in very good condition, it looks un-used. This is a Bolivar mechanical filter made for Collins radio. 5 JCS the Collins part number is this a vintage filter date code Bolivar LP-864...(July 12th, 2017)
• 242f-5cl Collins Radio Rack System 51m-8 (33.9% similar) The shipping calculator seems to be running high lately. Thank-you for looking happy ING. Collins radio rack system 51M-8 receiver 242F-5CL transmitter PS manuals. The pictures are part of. Zip code please send your for an accurate shipping cost...(February 18th, 2017)
• Linear Ham Vintage Collins 30s-1 Amplifier Hf (32.5% similar) Tested to power on. No further testing done...(March 5th, 2015)
• 310b3 Collins Amateur Radio Transmitter-exciter (41.6% similar) The Collins 310B3 has been is storage for many years. Shipping is via USPS,zip code 01073. Collins 310B3 transmitter exciter in fair to good condition un-tested. Shipping is calculated from my zip code to your. Zip code here is the power output 15 watts ,serial number ,15,20,40 and 80 meter coils ...(January 31st, 2018)
• 312b-3 Collins Authentic Radio Speaker For (36.7% similar) Authentic and beautiful Collins speaker for s-line, KWM-2, 51S-1. Cosmetics are clean and nearly flawless see photos, winged emblem. Early serial number of no. Audio cable is attached and connects to rig with rca plug. 5 x7 oval 4-OHM speaker in x solid cabinet...(December 6th, 2018)