9387 KNIGHT Tube Tester

Review KNIGHT Model 600 Tube Tester Vintage

The Knight KniTeL 9387 600 Tube Tester is a versatile and high-performance instrument designed for testing and diagnosing vacuum tubes in various applications. This tester is an essential tool for electronics technicians, repair shops, and laboratories where tube testing is required.

The 9387 600 Tube Tester comes with an impressive capacity to test up to 600 vacuum tubes without the need for external power supplies. It offers a wide range of test functions, including DC and AC filament, plate current, plate voltage, grid voltage, and grid current tests. These tests are crucial in determining the health and functionality of vacuum tubes, which is essential in maintaining the optimal performance of electronic devices.

The tester features an easy-to-read, backlit digital display that shows the test results in real-time. The digital readout provides precise and accurate measurements, ensuring that the test results are reliable and consistent. The unit also includes a built-in speaker that produces an audible signal whenever a tube passes or fails the test, making the testing process more efficient.

The Knight KniTeL 9387 600 Tube Tester is designed with a robust and durable construction, making it suitable for use in demanding environments. It comes with a sturdy carrying case, which protects the tester from damage during transportation and storage. The case also includes compartments for the test leads, probes, and other accessories, keeping them organized and easily accessible.

The tester's test leads and probes are made of high-quality copper wire, ensuring excellent conductivity and long-lasting performance. The leads and probes are also color-coded for easy identification, making the testing process more efficient and less prone to errors.

The 9387 600 Tube Tester is compatible with a wide range of vacuum tubes, including triodes, tetrodes, pentodes, beam power tubes, and diodes. It can test tubes with various filament voltages and currents, making it a versatile and indispensable tool for electronics technicians and repair shops.

The Knight KniTeL 9387 600 Tube Tester is a must-have tool for anyone working with vacuum tubes. Its high capacity, wide range of test functions, easy-to-read display, and robust construction make it an essential tool for diagnosing and repairing electronic devices. Whether you are a professional electronics technician, a hobbyist, or a student, this tester will help you ensure the optimal performance of your vacuum tubes and the electronic devices that use them.

Pros and Cons of buying a Knight KTS9387 600 Tube Tester

The Knight KTS9387 600 is a professional tube tester designed for repairing and testing various types of vacuum tubes. Like any other equipment, this tester comes with its advantages and disadvantages. In this analysis, we'll discuss both the pros and cons to help you make an informed decision before purchasing.

1. Comprehensive testing capabilities: The Knight KTS9387 600 supports testing for a wide range of tube types, including triodes, pentodes, and tetrodes. It can test tubes with different voltages, currents, and power ratings.

2. High accuracy: The tester provides high-precision test results, ensuring accurate diagnosis of tube issues. This is essential for repair work, as it helps technicians identify the root cause of the problem.

3. User-friendly interface: The tester features an intuitive and easy-to-use graphical user interface, making it suitable for users at all skill levels.

4. Durable construction: The Knight KTS9387 600 is built with high-quality materials and is designed to withstand heavy usage in professional environments.

5. Versatile functions: The tester offers various functions, such as automatic calibration, test sequence customization, and data logging, enhancing its overall functionality and efficiency.

1. Expensive: The Knight KTS9387 600 is a high-end tube tester and comes with a premium price tag. It may not be an affordable option for hobbyists or small repair shops.

2. Complex setup: Although the tester has a user-friendly interface, setting it up for the first time can be a challenging process, especially for those without prior experience.

3. Large size: The Knight KTS9387 600 is a bulky piece of equipment, requiring a significant amount of space for operation. This can be a disadvantage for those with limited workspace.

4. High power consumption: The tester consumes a considerable amount of power during operation. This may result in higher electricity bills for users.

The Knight KTS9387 600 tube tester is an excellent investment for professionals and technicians working in repair shops, broadcasting studios, or other professional environments where vacuum tube testing is required. Its comprehensive testing capabilities, high accuracy, and user-friendly interface make it a valuable tool for diagnosing and repairing various types of vacuum tubes. However, its premium price, complex setup, large size, and high power consumption might deter hobbyists or smaller businesses. Ultimately, the decision to buy the Knight KTS9387 600 depends on your specific requirements, budget, and the nature of your vacuum tube testing needs. If you're a professional in the field and can afford the investment, the benefits of this tester are well worth the cost.

Details:

Measurements: approx. Great for antique radio enthusiasts, restorers, or collectors of mid-century test equipment. No visible major damage, but functionality is unknown no power cord or accessories included beyond whats shown. 2/3 5 it features a multi-scale meter with replace.

Its untested and shows signs of age including dust, minor rust on components, wear knobs/labels. Condition: this unit is being sold as-is for parts, repair, or display. These were popular DI kit or assembled units from the mid-20th century circa 1950s-1960s for testing vacuum tubes in radios, TVs, and other electronics. Theres a row of 10 lever switches for selecting tube elements/pins, short test toggle, gas/line button, and multiple socket types various bases octal, local, miniature, etc.

Includes a test probe cable. Test good indicators, rotary knobs for filament voltage adjustment 0-120v, load control, circuit value, and line adjust. Shipping: carefully packed; buyer pays actual shipping costs.

specifications vactubetest:

• brand: Knight
• mpn: 9387
• part type: Tester Tube

shipping vactubetest:

• carrier: usps
• class: standard
• service: usps ground advantage
• transit: 4-11 days
• type: calculated

offer vactubetest:

• in stock #: 1
• availability: in stock
• options: ship-to-home
• best offers: true
• started: december 8, 2025
• price: $109.25
• item condition: Used
• sold #: 8

payments vactubetest:

• other
• wallet: google-pay
• credit card: visa

returns vactubetest:

• policy: no returns

general vactubetest:

• category: Business & Industrial > Test, Measurement Inspection > Calibrators > Tube Testers

seller vactubetest:

• # reviews: 5
• rating: 100.0%
• city: carlisle, pennsylvania