DUMONT Antique Square Crt Tube K1076P7

( Brand: Dumont ), ( Manufacturer Part Number: K1076P ), ( Type: Vacuum Tube ), ( Country Of Origin: United States )

Review DUMONT Rare Antique Inch Square Crt Tube

The Dumont K1076P and its variant, the K1076P7, are iconic square cathode-ray tubes (CRTs) that represent a pivotal era in television and display technology, embodying the sleek, mid-century modern aesthetic of the 1950s and 60s. These tubes were designed by the pioneering American electronics company Dumont Laboratories, a name synonymous with innovation during the golden age of television. The K1076P and K1076P7 are particularly notable for their distinctive square format, which was a departure from the more common rectangular CRTs of the time. This design choice was driven by the need to fit the tube into the compact, space-saving chassis of early television sets, particularly those intended for living room placement. The K1076P features a 10-inch diagonal screen with a 9x10-inch rectangular viewing area, while the K1076P7, an improved variant, maintains the same physical dimensions but incorporates enhanced internal components for better image quality, including a more efficient electron gun assembly and a refined phosphor coating for improved brightness and color fidelity.

Both tubes operate on a shadow-mask color CRT technology, a system that was revolutionary at the time, allowing for the display of full-color images on a single screen. The K1076P and K1076P7 utilize a three-gun electron beam system, where each gun emits electrons that pass through a shadow mask with precisely aligned apertures. These apertures direct the electrons onto corresponding red, green, and blue phosphor dots on the tube s inner surface, creating the illusion of color through the additive mixing of light. The square format of these tubes was not merely a practical consideration but also a stylistic one, contributing to the distinctive look of vintage television sets that became a cultural icon. The front of the tube features a robust, blackened glass face with a slightly curved surface, designed to minimize reflections and enhance viewing clarity. The neck of the tube, where the electron guns and deflection coils are housed, is encased in a sturdy metal housing, often painted in a matte black or silver finish, adding to the retro aesthetic.

Internally, the K1076P and K1076P7 are marvels of engineering, showcasing the technological advancements of their era. The electron guns are housed in a focused, compact arrangement, with the K1076P7 offering slight improvements in beam alignment and convergence, reducing color fringing and ensuring sharper, more accurate images. The shadow mask itself is a critical component, featuring a pattern of tiny holes that align precisely with the red, green, and blue phosphor dots on the tube s inner surface. This alignment is crucial for maintaining color purity and preventing color bleeding, which was a common issue in early color televisions. The phosphor coating on the K1076P7 is optimized for higher brightness and longer lifespan, making it a more reliable choice for extended viewing sessions. The deflection coils, which guide the electron beams across the screen, are wound with fine wire and carefully calibrated to ensure smooth and accurate scanning, minimizing geometric distortion.

The Dumont K1076P and K1076P7 are not only prized for their technical specifications but also for their role in shaping the visual landscape of mid-20th-century entertainment. These tubes were integral to the development of early color television broadcasting, which began to gain traction in the late 1950s and early 60s. The compact size and efficient design of the K1076P and K1076P7 allowed manufacturers to create sleek, portable television sets that could be easily integrated into home decor, reflecting the growing consumer demand for entertainment in the living room. The tubes durability and reliability made them a staple in both commercial and residential applications, enduring for decades despite the eventual shift to newer display technologies.

For collectors, enthusiasts, and restorers, the Dumont K1076P and K1076P7 represent a tangible connection to the history of television and electronics. These tubes are highly sought after for their rarity, historical significance, and the unique visual experience they provide. When properly restored and paired with compatible circuitry, they offer a nostalgic yet high-quality viewing experience that captures the essence of an earlier era. The warm, slightly grainy image produced by these tubes, combined with their distinctive square format, creates a visual aesthetic that is both charming and evocative. Whether used in vintage television sets, custom-built CRT monitors, or as part of a retro-themed display, the Dumont K1076P and K1076P7 continue to inspire admiration for their craftsmanship and innovation.

### Pros and Cons of Buying a Dumont K1076P Antique CRT TV (K1076P7 Square CRT Tube)

1. **Historical and Collectible Value** The Dumont K1076P is a rare and iconic piece of television history, particularly from the early days of color television (1960s 1970s). It holds value for collectors and enthusiasts of vintage electronics.

2. **Unique Design and Aesthetic** The square CRT tube (K1076P7) gives the TV a distinctive, retro look, making it a conversation piece for those who appreciate mid-century design.

- **Vintage gaming** (e.g., retro consoles like the Atari 2600 or NES with RF modulators).

- **Analog broadcasting** (if you have access to old VHF/UHF signals).

- **Artistic or experimental projects** (e.g., creating glitch art, analog effects, or DIY modifications).

- Replacing the CRT tube (if available).

- Upgrading the chassis with modern components (e.g., a Raspberry Pi for video input).

- Converting it into a custom display for retro computing (e.g., Amiga, Commodore 64).

5. **Low Operating Cost (If Functional)** Unlike modern flat-panel TVs, CRT TVs consume minimal power when on, and parts (if available) are often cheaper than replacing a modern display.

6. **Nostalgia Factor** For those who grew up with or are fascinated by analog technology, owning a piece of television history can be deeply satisfying.

---

1. **Extremely Rare and Expensive** Finding a fully functional Dumont K1076P in working condition is difficult, and prices for complete units or parts can be prohibitively high (often $1,000 for a restored example).

2. **High Maintenance and Repair Challenges**

- CRTs degrade over time, and the K1076P7 tube is particularly fragile (square tubes are less common than rectangular ones).

- Replacing a dead CRT is costly and may not be feasible due to discontinued manufacturing.

- The chassis contains outdated components (transistors, capacitors, etc.) that may fail or require specialized knowledge to repair.

3. **Limited Practical Use**

- Modern video sources (HDMI, USB, digital broadcasts) are incompatible without significant modifications.

- The screen resolution and aspect ratio (4:3) are incompatible with most modern content.

- No built-in tuner for digital TV (DVB-T, ATSC), requiring RF modulators or analog sources.

4. **Safety Risks**

- CRTs contain lead and other hazardous materials. Proper disposal or restoration requires caution.

- High voltage inside the tube poses a risk if the TV is opened or modified improperly.

5. **No Active Market for Parts or Support**

- Unlike modern TVs, finding replacement parts (e.g., yoke coils, focus coils) is nearly impossible.

- No official support or warranties exist; repairs depend on individual expertise or luck.

6. **Energy Inefficiency Compared to Modern TVs**

- While CRTs consume less power than some older models, they are far less efficient than modern LCD/OLED TVs, especially when left on for extended periods.

7. **Ethical and Environmental Concerns**

- Buying a CRT TV contributes to electronic waste if not properly recycled or repurposed.

- Some collectors may argue that preserving vintage tech should not encourage new purchases unless absolutely necessary.

---

- **Serious collectors** who prioritize historical significance over practical use.

- **DIY enthusiasts** with technical skills who are willing to invest time and money into restoration or repurposing.

- **Retro gaming or computing hobbyists** who can adapt the TV for niche applications (e.g., with a Raspberry Pi or RF modulator).

For **casual viewers or general consumers**, this purchase is **not practical** due to its limited functionality, high cost, and maintenance challenges. Modern flat-panel TVs offer far superior usability, longevity, and compatibility.

---

- Proceed with caution, prioritizing a **fully restored or tested unit** (if available).

- Budget for potential repairs, parts, or modifications (e.g., a CRT repair kit, RF modulator, or Raspberry Pi for input).

- Consider joining **vintage electronics forums** (e.g., Vintage Computer Forum, CRT Repair groups) for guidance on restoration.

- Avoid purchasing unless you have a **clear, low-cost use case** (e.g., a friend with restoration experience or a specific project in mind).

- **Modern retro gaming consoles** (e.g., Raspberry Pi-based setups with emulation).

- **Vintage CRT monitors** (more common and often cheaper than TVs).

- **Digital flat-panel TVs** with retro gaming modes (e.g., some TVs support RF input for classic consoles).

- **Inspect thoroughly** (test for functionality, check for damage, ask about restoration history).

- **Negotiate aggressively** many sellers overestimate the value of rare CRTs.

- **Factor in long-term costs** (storage, potential repairs, disposal if it fails).

Ultimately, this purchase is a **passion project** rather than a practical investment. Only buy if the **emotional or technical value** outweighs the practical drawbacks.

Details:

RARE Antique Dumont K1076P7 3 inch square CRT tube, great shape not fully tested filaments good and still has vacuum.

part #: k1076p prices

• $45.00-$75.00

specifications tubesocketvintagego:

• brand: Dumont
• mpn: K1076p
• type: Vacuum Tube
• country of origin: United States

seller tubesocketvintagego:

• # reviews: 7020
• city: Barre, Vermont
• rating: 99.5%

returns tubesocketvintagego:

• method: Money back
• policy: Returns Accepted
• paid by: Buyer
• time: 14 Days

shipping tubesocketvintagego:

• type: Calculated
• carrier: UPS
• service: UPS Ground
• cost: $16.17
• transit: 4-9 Days
• class: Standard

general tubesocketvintagego:

• Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets
• condition: Used

payments tubesocketvintagego:

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

offer tubesocketvintagego:

• options: Ship-to-home
• quantity: 1
• best offers: True
• availability: In Stock
• started: March 14, 2026
• sold: 0

Dumont K1076P Is Similar To:

• Lot Dumont 11kv8 Vintage 5lj8 Untested Tube Electronic Box (36.5% similar) You get both tubes and both boxes, the boxes show signs of wear and age so they are fragile. Read before buying...(January 21st, 2015)
• 12gc6 Dumont Vintage Electronic Vacuum Tube Nos Untested (31.9% similar) Vintage electronic vacuum tubes Dumont 12GC6 new old stock in box untested...(March 8th, 2019)
• Ray Tube Box Dumont 12jp4 Cathode (28.9% similar) Dumont cathode ray tube 12JP4 in cresting looking condition. In the box, sweat coast me be higher...(February 16th, 2015)
• Original 26-62 U.. 158 Unused 6dt6 Dumont Electronic Box Tube (25.2% similar) Posted with mobile. Unused and in original box. Untested because I have no way to test it...(January 24th, 2015)
• 2610 Dumont Ecc81 Vintage 12at7 2450 35253 Stereo Tube (46.8% similar) ...(March 10th, 2015)
• 3adp1 Dumont Antique Tube (46.3% similar) 11 inch Dumont tube model 3ADP1 made in USA 13 pin 739 also written untested no guarantees antique very large 3 inches across...(October 3rd, 2017)
• 3dp1a Dumont Crt Tube 3-inch (35.3% similar) Don't miss it. You don't get glitz or pizzazz on my pages, just really good products and unbeatable service. 3DP1A cathode ray tube nos here is a nice and hard-to-find round 3-INCH crt from Dumont. Combined shipping is never a problem. Has the anode connection in center. I specialize in calibration ...(October 7th, 2017)
• 3xp1 Dumont Oscilloscope Tube (32.6% similar) ...(May 6th, 2018)
• 49290 Results Stereo 7100 Vintage Dumont Tube 6kn6 (20.6% similar) ...(January 18th, 2015)
• 5960-00-011-3779 K2261p7 Usa Vintgae Made Dumont Rare Giant Nos Nib Crt Pillar (31.1% similar) Transistorized tube testers such as the AT-1000 results are not considered valid they differ from original manufacturers test set. Brand new in the original state from factory. Prior to placing an order for a price quote any noise or microphone testing. Buying and offers - all questions, conditions...(March 18th, 2018)
• 5adp1 Dumont Cathode Ray Tube (34.9% similar) I'll trust you and can me to do right. You are buying a vintage Dumont 5ADP1 crt for oscilloscope, scope clock, or other project. Inside the USA choose either parcel post or priority mail, whichever is best for you. Very precise and linear deflection makes this an excellent crt for scope clocks ...(January 12th, 2018)