TEKTRONIX 154-0367-00 Ge Sharp Pentode Tube Nos Box 7M-8136 6DK6

( Brand: Tektronix ), ( Manufacturer Part Number: 154-0367-00 ), ( Model: 7M-8136 ), ( Type: Electronic Tube ), ( Packaging: Original Box ), ( Features: Labeled Part Number, Vintage Packaging ), ( Vintage: Yes ), ( Modified Item: No ), ( Country Of Origin: United States ), ( Condition Description: Box Shows Age Related Staining And Foxing )

Review TEKTRONIX Vintage 7m Ge Sharp Cutoff Pentode Tube Nos Box

The **Tektronix 154-0367-00 7-meter 8136 GE 6DK6 Sharp Pentode Tube** is a meticulously preserved, original-in-box (OIB) component designed for high-performance radio frequency (RF) applications, particularly within vintage oscilloscopes, signal generators, and other analog test equipment from the mid-20th century. Manufactured by General Electric (GE) under the designation **6DK6**, this **sharp pentode** tube is renowned for its exceptional amplification characteristics and reliability, making it a sought-after part for restoration and repair projects. The **8136** designation indicates its compatibility with Tektronix s 1500-series oscilloscopes, where it served as a critical RF amplifier tube, ensuring precise signal amplification and minimal distortion in high-frequency measurements. With a **7-meter lead**, this tube is designed for easy installation in equipment where space and accessibility are considerations, allowing technicians to maintain clear connections without excessive cable clutter. The **6DK6** itself is a high-mu ( ) pentode, featuring a sharp cutoff characteristic that provides superior gain control and linearity, essential for accurate waveform analysis in laboratory and industrial settings. Encased in its original packaging a sturdy cardboard box with protective foam and clear labeling this tube remains in pristine condition, free from signs of wear, ensuring it will function as reliably as the day it was produced. Whether used in a restored Tektronix 1500-series oscilloscope, a vintage RF amplifier, or as a replacement in a collector s piece of analog test gear, this tube embodies the durability and precision engineering of an era when analog technology reigned supreme. Its inclusion in any restoration project guarantees not only improved performance but also a tangible connection to the golden age of electronic instrumentation.

### **Pros and Cons of buying a Tektronix 154-0367-00 (7M 8136 GE 6DK6 Sharp Pentode Tube, NOS in Box)**

1. **High Quality and Reliability** The 6DK6 is a well-regarded sharp pentode tube, known for its stable performance in high-voltage applications, including oscilloscopes, RF amplifiers, and power supplies. Tektronix parts, especially NOS (New Old Stock), are often well-preserved and tested by previous owners.

2. **Original New Old Stock (NOS) Condition** The tube is described as being in its original box, which suggests it has been handled minimally and may still retain its original specifications. NOS tubes are often preferred by collectors and technicians who value authenticity and historical value.

3. **Compatibility with Vintage Equipment** The 6DK6 was commonly used in Tektronix oscilloscopes (such as the 7100 series) and other analog test equipment. If you re restoring or maintaining vintage gear, this tube is a direct replacement.

4. **Potential for Resale Value** NOS tubes in good condition, especially those still in their original packaging, can hold or even appreciate in value over time, particularly among collectors of vintage electronics.

5. **Stable Performance in High-Voltage Circuits** The 6DK6 is designed for high-voltage amplification and switching applications, making it suitable for circuits where reliability under stress is critical.

6. **Minimal Risk of Counterfeit or Replacement Parts** Since this is a genuine NOS tube, there s no concern about modern replicas that may not match the original performance characteristics.

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1. **Age and Potential Wear** Despite being NOS, the tube is likely decades old (possibly 30 years). Even if it s in the box, there s a risk of internal degradation (e.g., cathode deterioration, grid corrosion, or vacuum loss) over time. It may not function optimally or at all when first installed.

2. **No Guarantee of Functionality** Simply being in the box does not guarantee the tube works. You ll need to test it (e.g., using a tube tester or by installing it in a known-working circuit) before use. If it s faulty, you may need to replace it, adding unnecessary cost.

3. **Limited Availability of Replacement Parts** If the tube fails, sourcing a direct replacement can be difficult, especially for older models. You may need to rely on modern substitutes (e.g., a 6DJ8 or similar), which may not perform identically.

4. **High Voltage Risks** The 6DK6 operates at high voltages (typically 250 500V), so improper handling or installation could pose a safety hazard. Experience with tube electronics is recommended.

5. **Cost vs. Modern Alternatives** While NOS tubes have sentimental and historical value, modern replacements (e.g., from manufacturers like Mullard, GE, or aftermarket brands) are often cheaper and come with warranties. The premium for NOS may not justify the risk unless you re a collector.

6. **Storage and Handling Considerations** Tubes are delicate; improper storage (e.g., exposure to moisture, temperature extremes, or physical damage) can degrade performance. Even if the tube is in the box, you must ensure it was stored properly.

7. **Testing and Setup Time** If the tube is new to you, testing and breaking it in (e.g., gradual voltage application) may require additional time and expertise, especially if you re unfamiliar with vacuum tube electronics.

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Buying a NOS 6DK6 tube from Tektronix in its original box is an attractive option if you value authenticity, historical equipment, or have a specific need for a direct replacement part. The tube s reputation for reliability in high-voltage applications and its potential resale value make it a strong candidate for collectors or restorers. However, the risk of it being non-functional upon purchase, the lack of guarantees, and the potential safety hazards of high-voltage tubes must be carefully considered.

- **Test it thoroughly** before installation (use a tube tester or a known-working circuit).

- **Have a backup plan** in case the tube fails (e.g., a modern substitute or a spare tube).

- **Handle it with care** to avoid damage during installation.

If you re purchasing it **primarily for collection or sentimental value**, the risks are lower, but the practical utility is limited unless you re restoring vintage gear.

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- You re restoring a specific Tektronix oscilloscope or equipment that requires this exact tube.

- You re a collector and the historical/nostalgic value outweighs the risk.

- You re prepared to test it before use and have experience with vacuum tubes.

- You re not experienced with high-voltage tubes and lack testing equipment.

- You re open to modern replacements, which are often more reliable and cost-effective.

- You re unsure whether the tube will work and don t have a backup plan.

For most practical applications, a **tested NOS tube** (preferably with a seller who offers a return policy or warranty) is preferable to a boxed tube with no guarantees. If possible, seek out a seller who provides verification of functionality or a money-back guarantee.

Details:

Buyer should test in their specific equipment. High-reliability tube used in multiple Tektronix scopes. Condition: Excellent vintage NOS condition. The 8136/6DK6 was developed as a reliable replacement for earlier types with improved cathode performance and is valued low-noise, high-frequency applications in vintage test equipment or audio projects.

This appears to be New Old Stock NOS with bright, clear glass envelope and clean 7-pin base. It comes with the original Tektronix cardboard box label visible in photos. Tube shows no signs of prior use; box exhibits light storage wear and age-related spotting consistent with its vintage status. Genuine Tektronix 8136 vacuum tube, part number 154-0367-00 also marked 7M on the label.

Key Features: Authentic Tektronix part 154-0367-00 8136 / 6DK6 equivalent. Strong physical condition with no visible damage. Please examine all photos closely for exact details.

part #: 154036700 prices

• $10.88-$12.99

specifications tubesocketvintagego:

• brand: Tektronix
• mpn: 154-0367-00
• model: 7m-8136
• type: Electronic Tube
• packaging: Original Box
• features: Labeled Part Number, Vintage Packaging
• vintage: Yes
• modified item: No
• country of origin: United States
• condition description: Box Shows Age Related Staining And Foxing

seller tubesocketvintagego:

• # reviews: 409
• city: Bangor, Pennsylvania
• rating: 100.0%

shipping tubesocketvintagego:

• type: Calculated
• transit: 5-10 Days
• class: Standard
• service: USPS Ground Advantage
• cost: $6.68
• carrier: USPS

returns tubesocketvintagego:

• policy: No Returns

offer tubesocketvintagego:

• options: Ship-to-home
• started: April 10, 2026
• quantity: 5
• sold: 0
• availability: In Stock

general tubesocketvintagego:

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

payments tubesocketvintagego:

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

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